Catalogue M-101

January 2003

AIRBREAK SWITCHES
2725 East Ginter Rd. Tucson, Arizona 85706 USA
(520) 294-3452 Fax (520) 294-3332
E-mail: switches@morpac.com
 Morpac Industries, Inc.
Founded by Lloyd Morgan in 1956 as Morgan Power Apparatus, Morpac has
been an electric utility supplier for more than 40 years. We have produced over 200
transmission line pullers and tensioners. Our cable handling expertise is highlighted
by one of the worlds longest spans, 19,000 feet in British Columbia, Canada. Field
experience gained from over 25,000 miles of transmission line construction on five
continents and unique jobs ranging from aerial trams to mooring winches have
made Morpac Industries the leader in reliable cable handling equipment.

In 1962 Morgan Power Apparatus of Canada was formed, introducing a series of

heavy duty off-road crawlers. The capability of these machines to carry up to 60 tons
over rough terrain at 20 miles per hour made them ideal for use on transmission line
projects to transport equipment and supplies. As a result of their outstanding dura-
bility, speed and capacity, we adapted over 1,000 crawlers into rock drills, portable
spars, and supply carriers for the logging and mining industries as well.

In 1974 Morpac complimented the electric utility market with the acquisition of a
high voltage disconnect switch company. More than 30,000 substation and distribu-
tion switches ranging from7.5kV to 500kV have since been installed throughout the
world, as well as over 1,300 stored energy operators for automation of distribution
switches.

In 1998 Morpac acquired the switch product line of MEMCO Manufacturing out of
Commack, New York. The MEMCO operations have been relocated to Morpac's manu-
facturing facility in Tucson, Arizona. In addition, key MEMCO management, engineering
and shop personnel are also now working in Tucson with Morpac.

Morpac is now able to offer you one of the broadest switch lines in the industry.
Please take a moment to review the entire catalog and familiarize yourself with our
newly expanded product line.

As always, if you have any questions or desire futher information about Morpac
Industries, we or our representatives are available to assist you.

Peter Morgan
President, Morpac Industries, Inc.

2 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Introduction
In our quest to offer the best products in the industry, we have four key criteria that must
be met before we will even consider any design changes, new products or manufacturing
changes:

The product must last over 30 years in a harsh environment with virtually
no attention.
Changes should not be made just for the sake of lowering costs.
Only those changes that can produce real product improvements or
enhancements are to be considered.
Changes must make the product more competitive.

Here are some recent product additions and enhancements:

We have just introduced two new vertical break switches, the EA1 and EA2, with ratings
up to 800kV and 4000 amps maximum continuous currrent rating. Using precision made
CNC parts and extrusions plus minimizing the use of castings on the EA1 and EA2 allows
us to manufacture a high quality switch at comparatively lower costs. See the new cata-
log section.

While keeping the basic design the same, we have made some major changes and
improvements to our motor operator. These changes were initiated by requests and feed-
back from customers like you. Check the motor operator section of this catalog.

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 3
 Table of Contents
PAGE

Tables of Switch Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Vertical break
Type EA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Type EA1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Type EA2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Type EA1S and VBV V style vertical breaks . . . . . . . . . . . . . . . . . . . . . 26

Center break . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Type EE, Center Side break, aluminum . . . . . . . . . . . . . . . . . . . . . . . . . 30
Type EEB, Center Side break, copper . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Type VEE, Center break V, aluminum . . . . . . . . . . . . . . . . . . . . . . . . . 37
Type CBV, Center break V, copper . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Side break . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Type R14C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Type CSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Double side break . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Types EB, EBB, EBF and VEB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Vertical reach (semi pantograph) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Types VR1 and VR2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Operating mechanisms
Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Stored energy operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Motor operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Hookstick operated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Memco design STV & STU type switches . . . . . . . . . . . . . . . . . . . . . . . 63
Morpac design hookstick switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Interrupters
Quick break Whips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Amprupter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Vacuum interrupters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

4 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Morpac/Memco Group Operated Switches
Table of Ratings
Amp Type of Switch Model
.. .. .. .. .. ..
Matl 7.5 15 23 34 46 69 115 138 161 230 345

.. .. .. .. .. .. . . . .
600 Vertical Break EA Al
" " EAB Cu

......
" " V VBV Cu
Side Break R14C Cu

......
" " CSB Cu
Center Break EE Al

..........
" " EEB Cu
" " V VEE Al
" " " CBV Cu

......
Dbl. Side Break EB Al
" " " EBB Cu
" " " EBF Cu
Vertical Reach VR2 Al

.. .. .. .. .. .. .. .. .. .. .
" " VR1 Al

.. .. .. .. .. .. . . . .
1200 Vertical Break EA Al
" " EAB Cu

.. .. .. .. .. .. . . . . .
" " V VBV Cu
Side Break R14C Cu

. . . . . .. . . . .
" " CSB Cu
Center Break EE Al

. . . . . .. .. .. .. .. .
" " EEB Cu
" " V VEE Al

. . . . . .
" " " CBV Cu

......
Dbl. Side Break EB Al
" " " EBB Cu
" " " EBF Cu
Vertical Reach VR2 Al

. . . . . .
" " VR1 Al

1600 Vertical Break

"
"
"
"
V
EA
EAB
VBV
Al
Cu
Cu
..........
...........
Side Break R14C Cu
" " CSB Cu

.....
Center Break EE Al
" " EEB Cu

.. .. .. .. .. ..
" " V VEE Al
" " " CBV Cu
Dbl. Side Break EB Al
" " " EBB Cu
" " " EBF Cu
Vertical Reach VR2 Al
" " VR1 Al

NOTE: EA ratings may refer to types EA, EA1, or EA2.

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 5
 Morpac/Memco Group Operated Switches
Table of Ratings
Amp Type of Switch Model Matl
.. .. .. .. .. .. .. .. .. .. .
7.5 15 23 34 46 69 115 138 161 230 345 500 765

..........
2000 Vertical Break EA Al
" " EAB Cu
" " V VBV Cu

...........
Side Break R14C Cu
" " CSB Cu

. . . . . ... ... ... ... ... .

Center Break EE Al
" " EEB Cu
" " V VEE Al

......
" " " CBV Cu
Dbl. Side Break EB Al
" " " EBB Cu
" " " EBF Cu
Vertical Reach VR2 Al

.. .. .. .. .. .. .. .. .. .. . . .
" " VR1 Al

3000 Vertical Break EA Al

" " EAB Cu
" " V VBV Cu

...........
Side Break R14C Cu
" " CSB Cu

.....
Center Break EE Al
" " EEB Cu

.. .. .. .. .. ..
" " V VEE Al
" " " CBV Cu
Dbl. Side Break EB Al

....
" " " EBB Cu
" " " EBF Cu
Vertical Reach VR2 Al

.. .. .. .. .. .. . ..
" " VR1 Al

4000 Vertical Break EA Al

" " EAB Cu
" " V VBV Cu
Side Break R14C Cu
" " CSB Cu
Center Break EE Al
" " EEB Cu
" " V VEE Al
" " " CBV Cu
Dbl. Side Break EB Al
" " " EBB Cu

..
" " " EBF Cu
Vertical Reach VR2 Al
" " VR1 Al

NOTE: EA ratings may refer to types EA, EA1, or EA2.

6 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Type EA, EA1, EA2
EAB, EA1S and VBV
VERTICAL BREAK
SWITCHES
8.25 KV through 800 kV
600 to 4000 Ampere

TYPE VBV TYPE EA

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 7
 Type EA and EAB
GENERAL FEATURES
DESIGN FEATURES Jaw & Hinge Contacts
Both the jaw and hinge employ similar types of
special high temperature resistant, copper alloy
Type EA Aluminum contact fingers. This material, possessing excel-
Vertical Break Switch lent spring characteristics and high conductivity,
makes an ideal self contained contact. There is
8.25 kV through 362 kV no need for back-up springs or other pressure
600-4000 Amps compensating devices commonly found on other
switches. The end result is cleaner and better
Type EAB - Copper contact arrangement. The reverse loop contact
Vertical Break Switch as used on the jaw takes advantage of the mag-
netic forces found under fault conditions to
8.25 kV through 242 kV increase the contact pressure of the fingers and
600-4000 Amps to force the blade against the closed position
blade stop.
The EA rotating rear insulator, vertical break
The hinge contact fingers are in continuous con-
switch embodies all of the rugged physical char-
tact with the switch blade throughout the com-
acteristics of the Memco product line. The design
plete opening and closing operation of
utilizes the best features of both copper and alu-
the switch.
minum in the live parts, maintaining the time
proven concept of silver to copper at all moving
contacts. The result is a truly high performance
switch.
1200 Ampere,
APPLICATION: With arcing horns or quick break 5 B.C.
attachment it can be used for line sectionalizing,
bypassing circuit breakers, or opening magnet-
izing current of transformer primary connections.
Without arcing horns it can be used for isolating
breakers or as a disconnecting switch.

TYPICAL JAW CONTACT ARRANGEMENTS

2000 Ampere
5 B.C.

600 Ampere,
3 B.C.
3000 Ampere,
5 B.C.

8 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Type EA and EAB
Current Carrying Parts Mounting Position
High strength, high conductivity aluminum is The type EA switch may be mounted in horizon-
used where practical throughout the live parts. tal, upright, vertical, or underhung position.
Blade end transitions are made by either bolted Counterbalancing is provided, where required, by
aluminum to copper or threaded copper to alu- compression type spring assemblies. Conversion
minum depending upon the blade diameter. In in the field from one mounting position to anoth-
either case, all copper or bronze transition pieces er can be made with a minimum of difficulty.
are tinned and the current interchange points
between the tinned copper and aluminum are Bearings
effectively sealed to prevent the entrance of
Maintenance free bearings are used at the base
moisture.
of the rotating insulator of all switches. Switches
All bearings and counterbalancing springs are
through 72.5 kV are furnished with sleeve or ball
isolated from the main current path by insulating
bearings. At 121kV and above, ball bearings are
bushings. The switch is designed in accordance
used. All bearings are enclosed in weatherproof
with the latest ANSI standards. It is also avail-
housings and are free of maintenance.
able, when specified, based upon past industry
Live part bearings consist of teflon, nylon, or
standards which limit temperature rise to 30 C
roller type, depending upon the application. No
over an ambient of 40 C.
field servicing is required.
Wiping Action & Operation Bases
The rolling action of the blade when opening and
Rigid galvanized structural steel channel bases
closing the switch provides a positive wiping
are furnished on all switches. Switches rated
and cleaning action of the jaw and hinge con-
72.5kV, 1200 ampere and below are normally fur-
tacts. The jaw contact pressure is relieved by the
nished on flat channel bases. Double channel
blade rotation prior to lift out.
bases are furnished at 121 kV and above.
In the closed position the blade mechanism is
Aluminum bases are available when specified.
mechanically locked over center thereby locking
the blade closed. In the open position the blade
center of gravity is located well behind the pivot
Leveling Bolts
point thereby preventing the blade from falling All switches 121 kV and above are furnished with
closed. four leveling bolts per insulator stack to provide
fast, effective means of aligning insulator stacks
in the field.

Rigid welded base showing bearing and leveling bolts.

3000 Ampere, 5 B.C. hinge assembly

Blade Height Adjustment

Blade height adjustment is provided by a very
convenient arrangement located in the linkage
between the top of the rotating insulator and the
blade.

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 9
 Type EA and EAB

Factory Assembled & Adjusted EA & EAB SWITCH

Switches 48.3 kV and below are pre-assembled ACCESSORIES
and adjusted on insulators at the factory.
Switches 72.5 kV and above are assembled and Ground Switches
adjusted, less insulators. Only minor adjust- Ground switches of the same or lower momen-
ments, if any, are required at installation. tary ratings as the main switches can be installed
on either the jaw or hinge end of the switch.
Standard practice is to operate the ground blade
Insulators 90 to the main blade. However, ground blades
parallel to the main blade are available. Both
NEMA standard station post or cap and pin insu-
braid and braidless ground switches are avail-
lators are available as specified.
able.

Quick Break Attachments

Field Installation Quick break attachments having the following
interrupting ratings can be furnished on all EA
The simplicity of design assures ease of installa-
switches.
tion and years of trouble-free service.

Switch Magnetizing Line Dropping

Charging
Rating Current Current Equivalent
kV Bank kVA Amps. Lines - Miles

Type EAB - Copper 8.25

15.5
20,000
30,000
22
20
*
*
Vertical Break Switch 25.8 40,000 18 *
38.0 50,000 16 *

FEATURES 48.3 60,000 14 75

72.5 80,000 12 50

The type EAB vertical break switch utilizes copper 121 100,000 9 25

and bronze for all current carrying parts. In all 145 100,000 7.5 18

other respects it is identical with the type EA, 169 100,000 6 12

described previously. Aluminum is used for coro-

na rings and counterbalancing spring housing. Outriggers
Blade end transitions, as described under EA Outriggers of various designs are available for
Carrying Parts are unnecessary. Silver contact copper or aluminum conductors.
material is silver brazed directly to the copper
blade tip. The resulting contact is time proven sil-
ver to copper. Terminal Connectors
Not all ratings are available in copper, refer When specified terminal connectors can be fur-
to factory. nished.

Refer to factory for outline drawings.

10 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 TYPICAL EA SWITCHES

38 kV, 1200 Ampere

15.5 kV, 600 Ampere

145 kV, 3000 Ampere

15.5 kV, 3000 Ampere

362 kV, 2000 Ampere

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 11
 R. 8"
TYPICAL (4) 9
16 " Dia. Holes Each End
31 2"

40 600 amperes
13 4 " Terminal pads
4"

134"

9
(2) 16 " Dia.
85
DEG N Furnished on control Holes Each 1200 AMPERES
FO . T O O PE .
R G
U PR I G H T MT phase only End TERMINAL PADS

.
TG
M
FO
65
DEG . T O O PE N UNG 1 3 4"
R RH
DE
V E RT & UN
.

3 1 2"

Blade Opening
NOTES
92 Deg. Upright Mtg.
70 Deg. Vertical & 1 Standard base shown, others available.
Underhung Mtg. 2 1 pair contact loops furnished for 600 ampere
NOTE 3
as shown. 2 pair contact loops furnished for
1200 ampere. Silvertocopper contacts
9 furnished unless otherwise specified.
16 "
3 Arcing horns furnished only when specified.
21 2" NOTE 2 4 Adjustable insulator adapter provided
A
9
16 "
for 69 kV only.
1 1 2"

H
NOTE 1

NOTE 4
3 (4) 9 16 " Dia.
Mtg. Holes

61 2" 15" B C Y
F E F
D

Voltage Rating CATALOG Insul. Approximate Dimensions

kV NUMBER Tech. (Refer to Factory for Certified Prints)
Ref.
Max. BIL (1) (2) (3) No. A B C D E F H Y

8.2 95 7EA6HP3 202 /

383 4" 15" /
41 2" 41" 36" /
21 2" 161 4" / 5"

3
15.5 110 15EA6HP3 205 411/4" 15" 41 /2" 41" 36" 21/2" 18 /4" 5"

3
25.8 150 23EA6HP3 208 481 4"/ 18" 41 2" / 44" 39" /
21 2" 22 4" / 5"

38 200 34EA6HP3 210 /

581 2" 24" /
41 2" 50" 48" 1" 27" 6"

48.3 250 46EA6HP3 214 681/2" 30" 41 /2" 56" 54" 1" 31" 6"

1 "
72.5 350 69EA6HP3 216 88 /
2
42" 71 2" / 71" 69" 1" 39" 6"

(1) Catalog numbers shown are with station post insulators. If cap and pin insulators are required, change the P to C in
the catalog number (eg.: 7EA6HC3).
(2) When 30 temperature rise unit is required, omit the H in the catalog number (eg.: 7EA6P3).
(3) Catalog numbers shown are for 600 amps. For 1200 amps, change 6 to 12 in the catalog number as required
(eg.: 8.2 kV1200 A: Cat. No. 7EA12HP3).

Ampere Momentary
Rating Rating

600A 40 KA

1200A 61 KA

Type EA 8.2 kV 72.5 kV 600 and 1200 Ampere

12 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 R. 10"

Terminal pads
50

13 4 "

4"

9
(4) 16 " Dia.
Furnished on control Holes Each
13 4 " 4 1 2" phase only 51 2" 1 3 4" End

Blade Opening
92 Deg. Upright Mtg.
70 Deg. Vertical &
Underhung Mtg.
NOTE 5

NOTE 3

NOTES
1 Standard base shown, others available.
NOTE 2 2 Silvertocopper contacts
furnished unless otherwise specified.
7
16 "
3 Arcing horns furnished only when specified.
3"
4 Adjustable insulator adapter provided
A
for 69 kV only.
5 Counterbalance spring furnished for
69 kV only.
H

NOTE 1

NOTE 4 3 (4) 9 16 " Dia.

Mtg. Holes

61 2 " 22" B C 6"

F E F
1 2
D

Voltage Rating CATALOG Insul. Approximate Dimensions

kV NUMBER Tech. (Refer to Factory for Certified Prints)
Ref.
Max. BIL (1) (2) No. A B C D E F F H
1 2

8.2 95 7EA20HP3 202 47" 15" /

41 2" 48" 36" /
21 2" 91 2" / 17"

1
15.5 110 15EA20HP3 205 /
491 2" 15" /
41 2" 48" 36" / /
21 2" 91 2" 19 2" /
1
25.8 150 23EA20HP3 208 /
531 2" 18" /
41 2" 51" 39" / /
21 2" 91 2" 23 2" /
1
38 200 34EA20HP3 210 631/2" 24" 41 /2" 57" 48" 1" 8" /
27 2"

1
48.3 250 46EA20HP3 214 /
731 2" 30" /
41 2" 63" 54" 1" 8" /
31 2"

1 " 1
72.5 350 69EA20HP3 216 81 /
2
42" /
71 2" 71" 69" 1" 8" /
39 2"

(1) Catalog numbers shown are with station post insulators. If cap and pin insulators are required, change the P to C in
the catalog number (eg.: 7EA20HC3).
(2) When 30 temperature rise unit is required, omit the H in the catalog number (eg.: 7EA20P3).

Ampere Momentary
Rating Rating
2000A 100 KA

Type EA 8.2 kV 72.5 kV 2000 Ampere

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 13
 R. 10" Terminal pads
50
13 4 "

4"

9
(4) 16 " Dia.
Furnished on control Holes Each
phase only End

13 4 " 4 1 2" 51 2" 1 3 4"

NOTES
1 Standard base shown, others available.
2 Silvertocopper contacts
Blade Opening furnished unless otherwise specified.
92 Deg. Upright Mtg. 3 Arcing horns furnished only when specified.
70 Deg. Vertical &
Underhung Mtg.

NOTE 3
7
16 "

NOTE 2 3"

NOTE 2
A

(4) 9 16 " Dia.

H NOTE 1 Mtg. Holes

1
61 2" 22" B 4 2"
F E F 8"
1 2
D

Voltage Rating CATALOG Insul. Approximate Dimensions

kV NUMBER Tech. (Refer to Factory for Certified Prints)
Ref.
Max. BIL (1) (2) No. A B D E F F H
1 2
3 " 3 "
8.2 95 7EA20HP5 222 49 /4
21" 54" 36" 1" 17" 19 /4
3 3
15.5 110 15EA20HP5 225 /
51 4" 21" 54" 36" 1" 17" /
21 4"

3 3
25.8 150 23EA20HP5 227 54 /4" 21" 54" 36" 1" 17" 24 /4"

3 3
38 200 34EA20HP5 231 65 4"/ 27" 60" 48" 1" 11" 29 4" /
3 3
48.3 250 46EA20HP5 267 75 4"/ 33" 66" 54" 1" 11" 33 4" /
(1) Catalog numbers shown are with station post insulators. If cap and pin insulators are required, change the P to C in
the catalog number (eg.: 7EA20HC5).
(2) When 30 temperature rise unit is required, omit the H in the catalog number (eg.: 7EA20P5).

Ampere Momentary
Rating Rating

2000A 100 KA

Type EA 8.2 kV 48.3 kV 2000 Ampere

14 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 R. 10"
Terminal pads
50
134"

4"

9
(12) 16 " Dia.
Furnished on control Holes Each
phase only End

13 4 " 4 1 2" 81 2" 13 4"

NOTES
1 Standard base shown, others available.
2 Silvertocopper contacts
furnished unless otherwise specified.
Blade Opening
92 Deg. Upright Mtg. NOTE 3 3 Arcing horns furnished only when specified.
NOTE 4 70 Deg. Vertical & 4 Counterbalance spring furnished as required.
Underhung Mtg. NOTE 2

4"

13 4 "

NOTE 2
A

(4) 9 16 " Dia.

H Mtg. Holes
NOTE 1
3

61 2" 22" B 4 1 2"

F E F 8"
1 2
D

Voltage Rating CATALOG Insul. Approximate Dimensions

kV NUMBER Tech. (Refer to Factory for Certified Prints)
Ref.
Max. BIL (1) (2) No. A B D E F F H
1 2
3 1
8.2 95 7EA30HP5 222 53 4"/ 21" 54" 36" 1" 17" /
20 4"

3 " 1
15.5 110 15EA30HP5 225 55 /4
21" 54" 36" 1" 17" /
22 "
4
3 1
25.8 150 23EA30HP5 227 /
58 4" 21" 54" 36" 1" 17" 25 4" /
3 1
38 200 34EA30HP5 231 63 /4" 27" 60" 48" 1" 11" 30 4" /
3 1
48.3 250 46EA30HP5 267 67 4"/ 33" 66" 54" 1" 11" 34 4" /
(1) Catalog numbers shown are with station post insulators. If cap and pin insulators are required, change the P to C in
the catalog number (eg.: 7EA30HC5).
(2) When 30 temperature rise unit is required, omit the H in the catalog number (eg.: 7EA30P5).

Ampere Momentary
Rating Rating
3000A 120 KA

Type EA 8.2 kV 48.3 kV 3000 Ampere

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 15
 Terminal pads
50
R 13 4 "

4"

9
(4) 16 " Dia.
13 4 " Furnished on control Holes Each
41 2"
4 1 2" phase only 1 3 4" End
51 2 " FOR 242 kV

Blade Opening
92 Deg. Upright Mtg.
70 Deg. Vertical & NOTE 2
Underhung Mtg. NOTE 3

7
16 "

3"

NOTES
NOTE 2 1 Standard base shown,
others available. NOTE 4
2 Silvertocopper contacts
furnished unless otherwise
specified.
3 Arcing horns furnished only
when specified.
4 Corona rings furnished for
A 242 kV only.

242 kV ONLY

H NOTE 1
(4) 11 16 " Dia.
Mtg. Holes

61 2" Z B 41 2"
F E F
1 D 2 81 4"
12" AT 1050 B.I.L.

Voltage Rating CATALOG Insul. Approximate Dimensions

kV NUMBER Tech. (Refer to Factory for Certified Prints)
Ref.
Max. BIL (1) (2) No. A B D E F F G H R Z
1 2
5 5
72.5 350 69EA12HP5 278 /
99 8" 45" 76" 69" /
31 2" 31 2" / 5" /
44 8" 10" 20"

5 5
121 550 115EA12HP5 286 128 /8" 60" 91" 87" 2" 2" 5" 59 /8" 10" 20"

5 5
145 650 138EA12HP5 288 /
149 8" 72" 103" 99" 2" 2" 5" 68 8" / 10" 20"

5 5
169 750 161EA12HP5 291 170 /8" 84" 115" 111" 2" 2" 6" /
77 8" 10" 20"

REFER 1 5 "
242 900 230EA12HP5 TO
FACTORY 8/
195 " 96" 129" 123" 3" 3" 6" 95 /
8 12" 22"

1 5
242 1050 230EA12HP5 312 /
225 8" 114" 147" 123" 3" 21" 6" 107 "
8 / 12" 22"

(1) Catalog numbers shown are with station post insulators. Ampere Momentary
If cap and pin insulators are required, change the P to C in
Rating Rating
the catalog number (eg.: 69EA12HC5).
(2) When 30 temperature rise unit is required, omit the H in the 1200A 61 KA
catalog number (eg.: 69EA12P5).

Type EA 72.5 kV 242 kV 1200 Ampere

16 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 17
 5 "
8

R 134"

4" 71 4"

9
13 4 " (12) 16 " Dia.
81 2 "
Furnished on control Holes Each
4 1 2" NOTE 4 13 4 "
phase only End

Blade Opening
92 Deg. Upright Mtg. NOTE 4
NOTE 3
70 Deg. Vertical &
Underhung Mtg. NOTE 2

13 4"

4"

31 2"

NOTE 2 NOTES
1 Standard base shown,
others available.
2 Silvertocopper
contacts furnished unless
otherwise specified.
3 Arcing horns furnished only
when specified.
4 Corona rings furnished for
A 242 kV only.

H NOTE 1
(4) 11 16 " Dia.
Mtg. Holes

6"

61 2" 22" B 41 2"

F E F
1 2 81 4"
D

Voltage Rating CATALOG Insul. Approximate Dimensions

kV Tech. (Refer to Factory for Certified Prints)
NUMBER
Ref.
Max. BIL (1) (2) (3) No. A B D E F F H R
1 2
3 1
72.5 350 69EA30HP5 278 /
103 4" 45" 78" 69" /
31 2" 51 2" 46 8"/ / 10"

3 1
121 550 115EA30HP5 286 133 /4" 60" 93" 87" 2" 4" /
61 8" 12"

3 1
145 650 138EA30HP5 288 154 4" / 72" 105" 99" 2" 4" 70 /8" 12"
REFER 3 1
169 750 161EA30HP5 TO
FACTORY
174 "
4 / 84" 117" 111" 2" 4" /
78 8" 12"
REFER 3 1
242 900 230EA30HP5 TO
FACTORY
204 "
4/ 96" 129" 123" 3" 3" 96 "/
8
12"

(1) Catalog numbers shown are with station post insulators. If cap and pin Ampere Momentary
insulators are required, change the P to C in the catalog number Rating Rating
(eg.: 69EA30HC5).
(2) When 30 temperature rise unit is required, omit the H in the catalog 69 kV 120 KA
number (eg.: 69EA30P5).
(3) When 120 KA momentary amperage is required for 115 kV through 3000A 115230 kV 100 KA
230 kV, add a S to the end of the catalog number (eg.: 69EA30HP5S). 115230 kV 120 KA NOTE
3

Type EA 72.5 kV 242 kV 3000 Ampere

18 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Type EA1
Morpac Type EA1 Aluminum Vertical Break Switch
Voltage ratings to 242 kV
1200 to 2000 Amps

The EA1 incorporates the best of the combined experience of Morpac Industries,
Inc. and Memco Manufacturing, Inc. (acquired by Morpac in 1998). The EA1 has
been tested to the latest ANSI standards and easily met and exceeded those
requirements.

Applications: Ratings and dimensions are compatible with the type EA. EA1 live
parts can replace EA live parts to upgrade older, existing switches. In fact EA1 live
parts can be used to replace live parts on switches of other manufacture. Contact
us for details.

The EA1 utilizes extrusions and all CNC

(computer numerical control) precision
machined parts. The result is a high
quality, yet economical switch.

The maintenance free rotating insulator

bearings are ball type with bronze spin-
dles and stainless steel races.

Standards now allow higher tempera-

ture rises than 30 degrees. Because of
the efficient design of the EA1 we can
offer a 30 degree version as an option.
15 kV Type EA1, 2000A, 30 C rise Version See below for further details.

The hinge mechanism for the 1200 and

2000 amp switches is identical. The
standard hinge mechanism current car-
rying parts are rated for 30 degree rise.

To make the EA1 a complete 30 degree

Hinge Mechanism, 1200 and 2000 Amp,
rise switch an additional pair of jaw
138 kV and below. Both 1200 and 2000 contacts and heavier wall blade are
Amp use the same hinge mechanism. used.

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 19
 Type EA1
Current transfer on all EA1 hinge mech-
anisms is through heavy silver plated,
threaded copper studs. The threaded
studs also allow the rotational hinge
movement for open and closing.

The threaded studs are sealed and lubri-

Hinge mechanism for 161 to 230 kV EA1 cated for life. No maintenance is
Note addition of corona ball to hinge. required.

In designing the EA1 Morpac reviewed

every component to determine whether
extrusions and fabricated parts would
provide real improvements over the tra-
ditional use of castings. The final con-
clusion was that a combination of all
three offered the best solution.
Hinge extrusion is made of high conductivi-
ty 6063 T6 aluminum alloy for cooler and
longer life operation. The result is a high quality switch that is
actually less expensive to manufacture
than one that relies primarily on cast-
ings.

The stainless steel hinge crank or

gooseneck is precision formed and
has a universal foot for either a 3 or 5
inch (75 or 125mm) bolt circle insulator.
Hinge crank

Jaw contacts are traditional and time

proven reverse loop design with stain-
less steel backup springs, isolated from
the current path.

The jaw extrusion is also of 6063 T6

aluminum alloy.
Jaw contact

20 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 9
(4) 16 " Dia. Holes Each End
50
R. 10" 13 4"

4"

Furnished on control NOTES

13 4 " 41 phase only 1 Standard base shown, others available.

2" 51 2" 13 4"
2 3 pair contact loops furnished for 1200
ampere as shown. 4 pair contact loops
furnished for 2000 ampere. Silverto
Blade Opening
Silver contacts furnished unless
92 Deg. Upright Mtg.
otherwise specified.
70 Deg. Vertical &
NOTE 5 Underhung Mtg. 3 Arcing horns furnished standard unless
NOTE 3
otherwise specified.
4 Adjustable insulator adapter provided
for 69 kV only.
1
A 2" 1 " 5 Counterbalance spring furnished
2 for 69 kV only.

3"
NOTE 2
3"

H
NOTE 1

NOTE 4 3 (4) 9 16 " Dia.

Mtg. Holes

6 1 2" 22" B C 6"

F E F
1 2
D

Voltage Rating CATALOG Insul. Approximate Dimensions

kV NUMBER Tech. (Refer to Factory for Certified Prints)
Ref.
Max . BIL (1) (2) (3) No. A B C D E F F H
1 2
5 "
8.2 95 7EA112HP3 202 45
8 / 18" /
41 2" 51" 40" / /
21 2" 81 2" 17"

1
15.5 110 15EA112HP3 205 481 8" / 18" /
41 2" 51" 40" / /
21 2" 81 2" 19 "
2 /
1 "
25.8 150 23EA112HP3 208 /
551 8" 21" /
41 2" 54" 43" 1
/ 1
/
2 2" 8 2" 23
2 /
1
38 200 34EA112HP3 210 651/8" 27" 3" /
581 2" 49" 1" 81/2" 27 " /
2
1
48.3 250 46EA112HP3 214 751 8" / 33" 3" /
641 2" 55" 1" /
81 2" 31 "
2 /
1 1
72.5 350 69EA112HP3 216 95 "
8 / 45" 6" /
791 2" 77" 1" /
1 1 2" 39 "
2 /
(1) Catalog numbers shown are with station post insulators.
(2) When 30 temperature rise unit is required, omit the H in the catalog number (eg.: 7EA112P3).
(3) Catalog numbers shown are for 1200 amps. For 2000 amps, change 12 to 20 in the catalog number as required
(eg.: 8.2 kV2000 A: Cat. No. 7EA120HP3).

Ampere Momentary
Rating Rating
1200A 61 KA
2000A 100 KA

Type EA1 8.2 kV 72.5 kV 1200 and 2000 Ampere

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 21
 9
(4) 16 " Dia. Holes Each End

50
R. 10" 13 4"

4"

Furnished on control NOTES

13 4 " 41 2" phase only 51 2" 13 4" 1 Standard base shown, others available.
2 3 pair contact loops furnished for 1200
ampere as shown. 4 pair contact loops
Blade Opening furnished for 2000 ampere. Silverto
92 Deg. Upright Mtg. Silver contacts furnished unless
70 Deg. Vertical & otherwise specified.
NOTE 5 Underhung Mtg. NOTE 3 3 Arcing horns furnished standard unless
otherwise specified.
4 Adjustable insulator adapter provided
for 69 kV only.
1
2"
A 1 " 5 Counterbalance spring furnished
2
for 69 kV only.

3"
NOTE 2
3"

H
NOTE 1

NOTE 4 3 (4) 9 16 " Dia.

Mtg. Holes

6 1 2" 22" B C 8"

1" E F
2
D

Voltage Rating CATALOG Insul. Approximate Dimensions

kV NUMBER Tech. (Refer to Factory for Certified Prints)
Ref.
Max. BIL (1) (2) (3) No. A B C D E F H

3 3 "
8.2 95 7EA112HP5 222 48 /8" 18" /
41 2" 51" 40" 10" 19 /
4
3 3 "
15.5 110 15EA112HP5 225 50 /8" 18" 41/2" 51" 40" 10" 21
4 /
3 3
25.8 150 23EA112HP5 227 56 8" / 21" /
41 2" 54" 43" 10" 24 "
4 /
3 3
38 200 34EA112HP5 231 67
/8" 27" /
41 2" 60" 49" 10" 29 "
4 /
3 3
48.3 250 46EA112HP5 267 77 /8" 33" 41/2" 66" 55" 10" 33 " /
4
3 3
72.5 350 69EA112HP5 278 95 /8" 45" 6" /
791 2" 77" 1 1 2" 39 "
4 / /
(1) Catalog numbers shown are with station post insulators.
(2) When 30 temperature rise unit is required, omit the H in the catalog number (eg.: 7EA112P5).
(3) Catalog numbers shown are for 1200 amps. For 2000 amps, change 12 to 20 in the catalog number as required
(eg.: 8.2 kV2000 A: Cat. No. 7EA120HP5).

Ampere Momentary
Rating Rating
1200A 61 KA

2000A 100 KA

Type EA1 8.2 kV 72.5 kV 1200 and 2000 Ampere

with optional extra strength insulators

22 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 9
(4) 16 " Dia.
50 Holes Each End
R
13 4 "

4"

1 3 4" Furnished on control

phase only
4 1 2" 51 2" 1 3 4"

Blade Opening
92 Deg. Upright Mtg.
70 Deg. Vertical & NOTE 2 NOTE 3
Underhung Mtg.

1
2"

3"
NOTES
1 Standard base shown, others available.
NOTE 2
2 3 pair contact loops furnished for 1200
ampere as shown. 4 pair contact loops
furnished for 2000 ampere. Silverto NOTE 4
silver contacts furnished unless
otherwise specified.
3 Arcing horns furnished standard unless
otherwise specified.
4 Corona shield provided
A for 161 kV and 230 kV only.

161 & 230 kV ONLY

H
NOTE 1
(4) 11 16 " Dia.
Mtg. Holes

61 2" 22" B 41 2 "

F E F 81 4"
1 2 12" AT 1050 B.I.L.
D

Voltage Rating CATALOG Insul. Approximate Dimensions

kV NUMBER Tech. (Refer to Factory for Certified Prints)
Ref.
Max. BIL (1) (2) (3) No. A B D E F F G H R
1 2
5 "
72.5 350 69EA112HP5 278 100
1 "
/ 4
45" 78" 69" 41 2" / /
41 2" 5" 44 /
8 10"
5 "
121 550 115EA112HP5 286
1
130 4" / 60" 93" 87" 3" 3" 5" 59
8 / 10"

1 5 "
145 650 138EA112HP5 288 151 4" / 72" 105" 99" 3" 3" 5" 68 / 8 10"

5
1 " 84" 77 / "
169 750 161EA112HP5 291 /172
4
117" 111" 3" 3" 6"
8
12"
REFER 1 5 "
242 900 230EA112HP5 TO
FACTORY
202 /4" 96" 129" 123" 3" 3" 6" 95
8 / 12"

1 5 "
242 1050 230EA112HP5S 312
4 /
232 " 114" 147" 123" 3" 21" 6" 107 /
8
12"

(1) Catalog numbers shown are with station post insulators. Ampere Momentary
(2) When 30 temperature rise unit is required, omit the H in Rating Rating
the catalog number (eg.: 69EA112P5).
(3) Catalog numbers shown are for 1200 amps. For 2000 amps, 1200A 61 KA
change 12 to 20 in the catalog number as required
(eg.: 72.5 kV2000 A: Cat. No. 69EA120HP5). 2000A 100 KA

Type EA1 72.5 kV 242 kV 1200 and 2000 Ampere

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 23
 Morpac Type EA2

Type EA2, Vertical Break Switch, 500765 KV. 3000 to 4000 Amps.
4000 Amp. version shown with Morpac Motor Operator.

24 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Type EA2

Type EA2, 550 to 765 kV Vertical Break Switch

Morpac Industries, Inc. has provided 765 KV vertical reach switches for over 30
years. Now with the introduction of the 765 KV EA2 switch, there are two types of
switches available for 765 KV, the EA2 vertical break and the VR1 vertical reach.
Morpac is the only US manufacturer to offer both a vertical reach and vertical break
switch at 765. Refer to our catalog for information on the VR1 or contact us directly
for more information on the VR1.

Morpacs experience at 765KV, its experience with vertical break switches at 500 KV
and below, along with an increased market demand for 765 KV switches led logical-
ly to the development of a vertical break switch for 765 kV applications. Although
the switch is relatively new, its design incorporates tried and true principles and has
behind it over 50 years of vertical break switch design experience.

Our design goal was not to make the cheapest switch that would pass ANSI, but to
design and build a competitive switch that not only passes ANSI but will last 75
years.

Features

The EA2 is an aluminum, vertical break switch rated for 550 and 765 KV
applications.
Current ratings available are 3000 or 4000 amps.
Jaw contacts are traditional reverse loop design.
Hinge contacts are sealed, threaded, heavy silver plated copper studs.
Sealed hinge contacts help provide superior ice breaking capabilities
All contact points are silver to silver.
The minimal use of castings in favor of extrusions and CNC produced parts
make the EA2 a consistent, reliable, high quality, yet competitive switch.
Time proven design features representing over 50 years experience in vertical
break switches and over 30 years experience in building 765 KV switches.

Morpac is committed to building high quality, trouble free switches at competitive

prices. For more information about this switch, please contact us.

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 25
 Type EA1S and VBV
Morpac Vertical Break V Switches

Morpac offers two types of vertical break V style switches, The EA1S and the VBV.
The VBV is a true vertical break V switch and the only true vertical break V switch
available in the world. The EA1S is a slant V vertical break switch with conventional
insulator arrangement on the hinge end but with a slanted insulator on the station-
ary, jaw contact end.

EA1S. The EA1S is an aluminum switch with all live parts common to the EA1. For
further feature details refer to the EA1 section of this catalog. The shorter base of
the EA1S allows for fitting in tight locations and may be ideal for substation voltage
upgrade applications, since existing structures may not have to be changed to
accommodate the longer bases required for conventional vertical break switches.

VBV. Morpacs vertical break VBV switch is a heavy duty, copper, substation class
switch designed to the old 30 degree C rise standard. All current carrying parts are
high conductivity copper or copper alloy. Contacts are silver to silver. Contact
shoes are reverse loop design with stainless steel back up springs isolated from any
current path. The VBV is a true V style vertical break switch. With a center of
gravity within 5 % of its geometric center the VBV can be safely and securely
mounted on a single beam unlike conventional vertical break switches.

Select the one best suited to your application:

VBV EA1S
Copper/ bronze construction High conductivity aluminum
Only true vertical break V V style, with short base but live
switch available parts from traditional EA1 line
Silver to silver contacts Silver to silver contacts
Maintenance free bearings Maintenance free bearings
Available in ratings up to Available in ratings up to
245 kV, 2000A 245 kV, 2000A
Small footprint allows switch Short foot print allows fitting
to be mounted on single beam in tight locations.

Morpac type VBV, 72.5 kV, 1200A Morpac Type EA1S

26 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 9
(4) 16 " Dia.
50 Holes Each End
R. 10"
13 4 "

4"

134" Furnished on control

phase only
41 2" 5 1 2" 1 3 4"

Blade Opening
92 Deg. Upright Mtg.
70 Deg. Vertical & NOTE 2 NOTE 3
Underhung Mtg.

1
2"

NOTES
3"
1 Standard base shown, others available.
2 Silvertosilver contacts furnished
NOTE 2 30
unless otherwise specified.
3 Arcing horns furnished
standard unless otherwise
specified.

H NOTE 1

(4) 11 16 " Dia.

Mtg. Holes

5"

61 2" 22" B
F E F 81 4"
1 2
D C

Voltage Rating CATALOG Insul. Approximate Dimensions

kV NUMBER Tech. (Refer to Factory for Certified Prints)
Ref.
Max. BIL (1) (2) (3) No. A B C D E F F H
1 2
1 5 "
72.5 350 69EA1S12HP5 278 100 /
1 "
4
45" 17" 2 /
56 " 36" 41 "
2 / 16" 44
8 /
1 5 "
121 550 115EA1S12HP5 286
1 "
130 /4 60" 25 "/
2 63" 54" 3" 6" 59
8 /
1 5
145 650 138EA1S12HP5 288
1
151 4" / 72" 29 "/
2
71" 66" 3" 2" 68 8" /
(1) Catalog numbers shown are with station post insulators.
(2) When 30 temperature rise unit is required, omit the H in the catalog number (eg.: 69EA1S12P5).
(3) Catalog numbers shown are for 1200 amps. For 2000 amps, change 12 to 20 in the catalog number
as required (eg.: 72.5 kV2000 A: Cat No. 69EA1S20HP5).

Ampere Momentary
Rating Rating
1200A 61 KA

2000A 100 KA

Type EA1S 72.5 kV 145 kV 1200 and 2000 Ampere

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 27
 Morpac Type VBV

Vertical Break V Group Operated Switch

28 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 TYPE EE and EEB CENTER-
SIDE-BREAK SWITCH
TYPE VEE and CBV CENTER
BREAK V SWITCH
1200, 1600, 2000 & 3000 Amperes
7.5 through 362 kV

TYPE EE TYPE CBV

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 29
 Type EE

GENERAL
DESIGN FEATURES
The EE center-side-break switch is a two insulator switch with both insulator stacks rotat-
ing for operation. The design of the live parts is essentially aluminum with properly treat-
ed copper utilized where necessary to achieve MEMCOs time proven concept of silver-to-
copper at all moving contacts.
The EE center-side-break when furnished with arcing horns or quick-break attachment can
be used for line sectionalizing, by passing circuit breakers or opening magnetizing current
of transformers. Without arcing horns it can be used for isolating breakers or as a discon-
necting switch.

ADVANTAGES INDUSTRY STANDARDS

Economical The EE center-side- The EE center-side-break switch is
break is more economical than a ver- designed in accordance with latest
tical-break or a double-side-break industry standards. It is also available
switch because it requires one less when specified based upon past
insulator per phase or three per industry standards which limit tem-
switch. perature rise to 30C over an ambient
of 40 C.
Self-balancing Inherent self-balanc-
ing design eliminates the need for
counter-balancing springs except in SWITCH OPERATION
special applications.
Opening and closing of the EE switch
Low operating effort Inherent is accomplished by rotation of the
design requires less operating effort vertical control pipe.
for a given rating than an equivalent This rotary motion results in a push-
vertical-break or side-break switch. pull motion of the interphase of the
insulator stack. Both insulators of
Contact engagement Full contact each phase are rotated simultane-
engagement easily seen from ground ously in opposite directions by the
position. connecting rod between them. When
in the open position each blade has
moved 90.

30 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Type EE

DETAILS
High-strength, high-conductivity aluminum
is used where practical throughout the live
parts. Wherever copper-to-aluminum
transitions are made the copper is tinned
and an oxide inhibitor compound is used to
provide an efficient transition.

CONTACTS
The male contact has a tinned copper bar
securely bolted to the aluminum casting
welded to the tubular blade. The tinned cop-
per bar has a silver overlay brazed along
each make-break surface.
1200 Ampere Jaw - Partially Open
The female contact has special, high tem-
perature resistant, copper alloy reverse-loop
contact fingers which are bolted to a rugged
aluminum jaw casting. Because of the excel-
lent mechanical, electrical and thermal prop-
erties of the reverse-loop material there is
no need for back-up springs or other pres-
sure compensating devices commonly
found on other switches.
The reverse loop configuration utilizes the
magnetic forces produced during fault con-
ditions to increase contact pressure.

2000 Ampere Jaw - Closed Position

2000 Ampere Jaw - Partially Open

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 31
 Type EE

HINGE ARRANGEMENT

HINGE The hinge contact is sealed with a non-ageing

lubricant. Current transfer is through the threaded
contact surfaces of a silver plated copper stud and
its mating tinned bronze contact housing. High
pressure is established and maintained by a stain-
less steel spring, electrically isolated from the cur-
rent path. This time proven arrangement has been
used by MEMCO since the mid 1950s.

TERMINAL All ratings of the EE switch have 4 x 4 aluminum

terminal pads with NEMA standard 13/4 x 13/4
PADS drilling for four (4) 1/2 bolts.

Terminal Pad Arrangement

32 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Type EE

OPERATING
MECHANISM
Each three pole, group operated type EE
switch is furnished complete with an operat-
ing mechanism for either manual or motor
operation depending on customer specifica-
tion. Unless otherwise specified by cus-
tomer, manually operated switches are fur-
nished with a swing handle at 169 kV and
below. AT 242 kV a worm-gear mechanism
replaces the swing handle.

Each operating mechanism is designed to fit

the customers support structure. Included
with the operating mechanism are vertical
LEVELING BOLTS pipe, connecting rods, interphase rods, out-
board bearing, open-close position indica-
All switches are furnished with four leveling tor, flexible ground strap and provision for
bolts per bearing to provide fast, effective customers padlock. Other accessories such
means of aligning insulator stacks in as auxiliary switches and interlocks can be
the field. provided at an added cost.

SWITCH BASES FIELD

INSTALLATION
Rigid double-channel galvanized steel bases
are normally provided on all EE switches. The simplicity of the EE center-side-break
The rigid trussed construction of the bases switch design assures ease of installation
assures perfect alignment of the insulators and years of trouble-free service.
and smooth operation of the switch. An
equivalent aluminum base is available when
specified.
ACCESSORIES
Ground switches, quick break attachments,
INSULATORS outriggers, spill gaps, along with terminal
connectors, motor mechanisms and pole
Industry standard station post or cap and top frames are available on request.
pin insulators are normally provided. Others
are available when specified.

BEARINGS
Maintenance free stainless steel bearings
with stainless steel races within a galva-
nized housing are provided at the base of
each insulator.

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 33
 T

4" 71 4"
NOTE 5 1200 - 2000 amperes
R. 8" Terminal pads
TYPICAL
NOTE 5 T
T

13 4 " 4" 4" 434"

.
EN
EG
45

D
OP
90 O R. 8" 9
T
A
(4) 16 " Dia. Holes 3000 AMP
Each End
Furnished on TERMINAL PADS
control phase only
(12) 9/16" DIA. HOLES AT13/4" CENTERS EA. END
NOTE 3 31 2"
3
1 4" NOTES
1 Standard base shown, others available.
43 4 " 2 2 pair contact loops furnished for 1200 ampere
T
as shown. 3 pair contact loops furnished for
1600 ampere and 2000 ampere; 4 pair contact
NOTE 2 loops for 3000 ampere.

H
3 Arcing horns furnished only when specified.
NOTE 1 4 Insulator leveling screws provided at 69 kV only.
NOTE 4
5 "T" = terminal pad thicknesss are 5/8" for 1200 amperes,
(4) 9 16 " Dia.
Mtg. Holes 7/8" for 1600 and 2000 amperes; 5/8" for 3000 amperes.

5"

5" B 5" 8"

2" E 2"
D

Voltage Rating CATALOG Insul. Approximate Dimensions

kV NUMBER Tech. (Refer to Factory for Certified Prints)
Ref.
Max. BIL (1) (2) (3) No. A B D E H

8.2 95 7EE12HP5 222 161 4" / 27" 37" 33" /

211 2"

15.5 110 15EE12HP5 225 161 4" / 27" 37" 33" /

231 2"

25.8 150 23EE12HP5 227 /

161 4" 27" 37" 33" /
261 2"

38 200 34EE12HP5 231 161 /4" 27" 37" 33" 311/2"

48.3 250 46EE12HP5 267 191 4" / 33" 43" 39" /

351 2"

5 "
72.5 350 69EE12HP5 278 25
8 / 45" 55" 51" /
421 2"

(1) Catalog numbers shown are with station post insulators. If cap and pin insulators are required, change the P to C in
the catalog number (eg.: 7EE12HC5).
(2) When 30 temperature rise unit is required, omit the H in the catalog number (eg.: 7EE12P5).
(3) Catalog numbers shown are for 1200 amps. For 1600, 2000, or 3000 amps, change 12 to 16, 20 or 30 in the catalog
number as required (eg.: 8.2 kV2000 A: Cat. No. 7EE20HP5).

Ampere Momentary
Rating Rating
1200A 61 KA
1600A 70 KA

2000A 100 KA

3000A 120 KA

Type EE 8.2 kV 72.5 kV 1200 thru 3000 Ampere

34 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 1200 - 2000 T
NOTE 5 amperes
Terminal
R. 10" 71 4"
pads 4"
TYPICAL
R. 10"
NOTE 5 T
4" T

.
EN
434"

EG
4"
45

D
OP
90 O Furnished on 134"
T
control phase only 9
A (4) 16 "
Dia. Holes 3000 AMP
Each End
31 2"
T
TERMINAL PADS
1 3 4" NOTE 3 (12) 9/16" DIA. HOLES AT13/4" CENTERS EA. END

43 4"

NOTE 2
NOTE 6 NOTES
1 Standard base shown, others available.
2 2 pair contact loops furnished for 1200 ampere
as shown. 3 pair contact loops furnished for
1600 ampere and 2000 ampere; 4 pair contact
H loops for 3000 ampere.
3 Arcing horns furnished only when specified.
4 Insulator leveling screws provided at 69 kV only.
5 "T" = terminal pad thicknesss are 5/8" for 1200 amperes,
7/8" for 1600 and 2000 amperes; 5/8" for 3000 amperes.
6 Corona rings furnished for 230 and 345 kV only.

NOTE 4
NOTE 1

(4) 11
16 " Dia. Mtg. Holes
G

5" B 5"
2" E 2" 8 1 4"
(12" AT 1050 BIL)
D

Voltage Rating CATALOG Insul. Approximate Dimensions in Inches

kV NUMBER Tech. (Refer to Factory for Certified Prints)
Ref.
Max. BIL (1) (2) (3) No. A B D E G H

5
72.5 350 69EE12HP5 278 25 8"/ 45" 55" 51" 6" 463 8"/
121 550 115EE12HP5 286 /
331 8" 60" 76" 72" 6" 607 8"/
145 650 138EE12HP5 288 /
391 8" 72" 88" 84" 6" /
663 8"

169 750 161EE12HP5 291 451/8" 84" 100" 96" 6" 753/8"

242 900 230EE12HP5 304 /

531 8" 96" 108" 104" 6" 897 8"/
1 3
242 1050 230EE12HP5 316 /
60 " 114"
8
126" 122" 8" 111 /8"
3 3
362 1300 345EE12HP5 367 62 / " 136" 152" 148" 8" 113 / "
8 8
(1) Catalog numbers shown are with station post insulators.
Ampere Momentary
If cap and pin insulators are required, change the P to C
Rating Rating
in the catalog number (eg.: 7EE12HC5).
(2) When 30 temperature rise unit is required, omit the H in 1200A 61 KA
the catalog number (eg.: 7EE12P5).
1600A 70 KA
(3) Catalog numbers shown are for 1200 amps. For 1600,
2000, or 3000 amps, change 12 to 16, 20 or 30 in the 2000A 100 KA
catalog number as required (eg.: 8.2 kV2000 A:
Cat. No. 7EE20HP5). 3000A 120 KA

Type EE 72.5 kV 362 kV 1200 thru 3000 Ampere

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 35
 Type EEB
600 amperes
Terminal pads
A
1200 amperes 9
R. 8" (2) 16 " Dia. Holes
TYPICAL 2" Terminal pads Each End

13 4 "
3
1 4"

G .
N

TO
90
9

PE
(4) 16 " Dia. Holes

E
45

D
E

O
Each End

OP
R. 8"

D
0 EN G
9 TO .

Furnished
2"
NOTE 3 ICE SHIELD on control
13 4" phase only

13 4 "

5 31 4 "
8"
TYP.

NOTE 2

NOTES
1 Standard base shown, others available.
2 Silvertocopper contacts furnished
unless otherwise specified.
H
3 Arcing horns furnished only when specified.
4 Insulator leveling screws provided at
69 kV only.
5 Offset links furnished for 46 and 69 kV only.
NOTE 5 6 "J" = minimum phase spacing.
NOTE 4

9
(4) 16 " Dia. Mtg. Holes
NOTE 1

3"
C B C Y
1" E 1"
D

Voltage Rating CATALOG Insul. Approximate Dimensions in Inches

kV NUMBER Tech. (Refer to Factory for Certified Prints)
Ref.
Max. BIL (1) (2) (3) No. A B C D E H J Y

8.2 95 7EEB6P3 202 /

101 8" 18" /
51 "
2
29" 27" /
171 4" 21" 6"

3
15.5 110 15EEB6P3 205 /
101 8" 18" /
51 "
2
29" 27" /
19 4" 26" 6"

3
25.8 150 23EEB6P3 208 /
101 8" 18" /
51 "
2
29" 27" /
23 4" 29" 6"

3
38 200 34EEB6P3 210 131/8" 24" 51/ " 35" 33" 27 /4" 35" 6"
2
3
48.3 250 46EEB6P3 214 /
161 8" 30" /
61 "
2
43" 39" /
31 4" 42" 6"

1 "
72.5 350 69EEB6P3 216 22 /
8
42" /
61 "
2
55" 51" 41 " 58" 8"

(1) Catalog numbers shown are with station post insulators. If cap and pin insulators are required, change the P to C in
the catalog number (eg.: 7EEB6C3).
(2) Catalog numbers shown are for 30 rise ANSIC37.37 ACCC designation A01.
(3) Catalog numbers shown are for 600 amps. For 1200 amps, change 6 to 12 in the catalog
number as required (eg.: 8.2 kV1200 A: Cat. No. 7EEB12P3).

Ampere Momentary The EEB is an economical, copper/bronze

Rating Rating double side break, with bearings,
600A 40 KA contacts and blades similar to those used on
1200A 61 KA the R14C.

Type EEB 8.2 kV 72.5 kV 600 and 1200 Ampere

36 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Type VEE
Aluminum Center Break "V" Switch
The type VEE incorporates all of the design features of the EE Switch except for its
V configuration which provides a compact base where installation requirements may
be tight. Available in aluminum only.

NOTES:

1) STANDARD BASE SHOWN - FOR BASE FURNISHED

SEE SWITCH OPERATING MECH. DWG.
2) ALL FERROUS PARTS H.D. GALVANIZED.
3) SILVER - TO - COPPER CONTACTS FURNISHED UNLESS OTHER- ITEM KV CAP & PIN INSULS STA. POST INSULS DIMENSIONS IN INCHES
WISE SPECIFIED. NO. RATING BIL SWITCH CAT. No. TR.No. SWITCH CAT. No. TR. No. H D
4) SWITCH FURNISHED WITH COPPER CONTACT LOOPS AND
BLADE ENDS. OTHER PARTS ALUMINUM. 1 69 350 69 VEE - 12 HC5 56 69 VEE - 12 HP5 278 41-1/4 48-5/16
5) CURRENT RATING BASED ON ANSI C 37.30-1971 2 115 550 115 VEE - 12 HC5 19 115 VEE - 12 HP5 286 54-1/4 63-5/16
6) CORONA RINGS FURNISHED FOR 230KV RATING ONLY.
7) 2 PAIR CONTACT LOOPS FURNISHED FOR 1200 AMP AS SHOWN. 3 138 650 138 VEE - 12 HC5 22 138 VEE - 12 HP5 288 62 72-5/16
3 PAIR CONTACT LOOPS FURNISHED FOR 1600 & 2000 AMP 4 161 750 161 VEE - 12 HC5 25 161 VEE - 12 HP5 291 69 80-5/16
4 PAIR CONTACT LOOPS FURNISHED FOR 3000 AMPS
8) ARC HORNS FURNISHED ONLY WHEN SPECIFIED. 5 230 900 230 VEE - 12 HC5 126 230 VEE - 12 HP5 304 84-1/2 98-5/16

AMPERE MOMENTARY TERM. PAD TERM. PAD

RATING RATING THICKNESS LOCATION
T B NOTE: CATALOG No.s SHOWN ARE FOR 1200 AMPS -
1200 A 61 KA 3/4 5 1/4
1600 A 70 KA 7/8 5 1/4
FOR 1600, 2000 OR 3000 AMPS. CHANGE 12 TO 16,
2000 A 100 KA 7/8 5 1/4 20 OR 30 IN CATALOG No. AS REQUIRED.
3000 A 120 KA 5/8 8 1/2 EXAMPLE: 161 KV - 2000 A, CAT. No. 161 VEE - 20 HPS

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 37
 Morpac Type CBV
Copper Center Break "V" Switch

CENTER BREAK V
The Morpac center break V, designated Type CBV, is a heavy duty, substation class, 30
C rise, maintenance free disconnect switch for outdoor installation. The switch is designed
for group operation, and is used in all types of electrical power circuits from 7.5 kV to 230
kV, with continuous current ratings from 600 to 2000 amperes. The compact base design
and symmetrical features are ideal for direct pole mounting (phase over phase and center
phase opposite), cross arm mounting, and substation installations where a massive sup-
port structure is not desirable.

38 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 SIDE BREAK SWITCHES
TYPES R14C and CSB
Ratings from 7.5 KV to 69 KV
600 and 1200 Amps

R14C CSB

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 39
 Type R14-C
The type R14-C is a three pole, single throw side-break, outdoor disconnect switch
available in ratings up to 72.5 kV at 600 and 1200 amps. The R14-C is an all copper
switch with high conductivity copper blades and silver inlaid stationary contacts.

BLADE BASE
Parallel copper bar construction formed Galvanized structural channel base is
and trussed for maximum rigidity. standard. Aluminum bases available as
Special forming provides four high pres- an option
sure contact points. Pressure is sup-
plied by stainless steel compression
ROTATING INSULATOR
springs.
BEARING
To reduce operating effort at 69 kV, the Sleeve type sintered bronze bearings
blades are articulated to create a whip are used on switches up to 48.3 KV.
effect when closing. This insures posi- Stainless steel ball and race bearings
tive and consistent closing. Blades for are used on 69 kV switches.
48.3 kV do not require articulation to
insure positive closing.

JAW CONTACT
Cast copper, high conductivity alloy ter-
minal, bayonet style with silver inlay
brazed to the contact surfaces.

HINGE CONTACT
Threaded copper stud with heavy silver
plate, completely sealed and enclosed.
Contact pressure is provided by a stain-
R14-C with optional arcing horns
less steel compression spring to insure
continuous contact throughout the
range of operation. No maintenance is ASSEMBLY
required for the hinge contact. Switches rated 48.3 kV and below are
shipped completely assembled on insu-
lators, standard. Assembly on insula-
MOUNTING tors is offered as an option at 69 kV.
The R14-C is suitable for horizontal, ver-
tical or underhung mounting on wood
or steel structures.
ACCESSORIES
Ground switch, arc horns, motorized
operation, outriggers, auxiliary switches
and much more.

40 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 R
1200 Amperes
Terminal Pads
30

1 3 4" 4"

N
OP E
15

TO
9
(4) 16 " Dia. Holes TOGGLEACTION BLADE TIP

.
Each End

EG
FOR 69 kV ONLY

D
5 2"
7

13 4"

NOTE 3
600 Amperes
5
8" Terminal Pads

1
3 4" 9
(2) 16 " Dia. Holes
NOTE 2 Each End
13 4 "

NOTE 4 NOTES
(4) 9
16 " Dia. Mtg. Holes 1 Standard base shown, others available.
NOTE 1
3" 2 Silvertocopper contacts furnished
unless otherwise specified.
3 Arcing horns furnished only when specified.
4 Insulator leveling screws provided at 69 kV only.
61 2" A 6 1 2" Y
2" E 2"
D

Voltage Rating CATALOG Insul. Approximate Dimensions

kV NUMBER Tech. (Refer to Factory for Certified Prints)
Ref.
Max. BIL (1) (2) (3) No. A D E H R Y

8.2 95 7R14C6P3 202 15" 28" 24" 17" 8" 5"

1
15.5 110 15R14C6P3 205 15" 28" 24" 19 2" / 8" 5"

1
25.8 150 23R14C6P3 208 18" 31" 27" 23 2" / 8" 5"

1
38 200 34R14C6P3 210 24" 37" 33" /
27 2" 10" 6"

3 "
48.3 250 46R14C6P3 214 30" 43" 39" 31 / 10" 6"
4

72.5 350 69R14C6P3 216 42" 55" 51" 41" 10" 8"

(1) Catalog numbers shown are with station post insulators. If cap and pin insulators are required, change the P to C in
the catalog number (eg.: 7R14C12C3).
(2) Catalog numbers are for 30 rise ANSIC37.37 ACCC designation A01.
(3) Catalog numbers shown are for 600 amps. For 1200 amps, change 6 to 12 in the catalog
number as required (eg.: 8.2 kV1200 A: Cat. No. 7R14C12P3).

Ampere Momentary
Rating Rating
600A 40 KA

1200A 61 KA

Type R14C 8.2 kV 72.5 kV 600 and 1200 Ampere

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 41
 Morpac Type CSB

SIDE BREAK SWITCH

The Morpac Type CSB is designed for substation and distribution use., Engineered to meet
the original ANSI 30 degree rise standard, it is a high quality copper switch manufactured
to the stringent standards of all Morpac switches.

Current carrying parts are high conductivity copper or copper alloy. The large cross-sec-
tional areas plus a minimum of current interchange surfaces provide a low resistance cur-
rent path. Both contact surfaces are plated with high-density silver which prevents galling
and assures good electrical contact under corrosive conditions. The bearing consists of a
cold rolled C1018 shaft running through oilite bushings (roller bearing available), creating
a maintenance free bearing for the life of the switch.

The switch is designed to meet all applicable NEMA and ANSI standards. All live parts hard-
ware is stainless steel/non-ferrous. Tinned terminal pads are available upon request.

42 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Morpac Type CSB
Side Break Group Operated Switch

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 43
 Type EB, EBB, EBF and VEB
DOUBLE SIDE BREAK
SWITCHES
38 kV through 362 kV
600 to 3000 Ampere

TYPE EB

44 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Type EB, EBB (VEB)
GENERAL springs or other pressure compensating devices
commonly found on other switches. The end

DESIGN FEATURES result is a cleaner and better contact arrange-

ment.
The reverse loop contact takes advantage of the
magnetic forces found under fault conditions to
Type EB Aluminum increase the contact pressure of the fingers and
Double Side Break Switch to force the blade against the closed position
blade stop.
72 kV through 362 kV
1200, 1600, and 3000 Ampere

The EB rotating center insulator, double side

break switch embodies all of the rugged physical
characteristics of the Memco product line. The
design utilizes the best features of both copper
and aluminum in the live parts, maintaining the
time proven concept of silver to copper at all
moving contacts. The result is a truly high
performance switch.

APPLICATION: With arcing horns, it can be used

2000 Ampere jaw.
for line sectionalizing, by-passing circuit break-
ers, or opening magnetizing current of trans-
former primary connections. Without arcing
horns, it can be used for isolating breakers or as
a disconnecting switch.

FEATURES
Current Carrying Parts
High strength, high conductivity aluminum is
used where practical throughout the live parts.
The blade is a one piece aluminum tube with alu-
minum castings welded to each end. A tinned
copper contact piece having a silver strip brazed
to each edge is bolted between the two halves of
each weldment and the joint is effectively sealed
with an inhibiting compound to prevent the
entrance of moisture. The switch is designed in
accordance with latest ANSI standards. It is also
available, when specified, based upon past indus-
try standards which limit temperature rise to 30C
over an ambient of 40C.

Jaw Contacts
The jaw contacts employ special high tempera-
ture resistant, copper alloy contact fingers. This
material, possessing excellent spring characteris-
tics and high conductivity, makes an ideal self
contained contact. There is no need for back-up Switch blade in jaw contact against blade stop.

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 45
 Type EB, EBB (VEB)
Wiping Action & Operation Bases
The switch is operated by rotation of the center Rigid galvanized structural steel double channel
insulator stack. During closing the initial 70 of bases are furnished. Aluminum bases are avail-
the insulator rotation swings the blade into the able when specified.
contact jaws, where the blade tips engage stops
that limit the swinging action. Continued insula-
tor rotation overcomes a biasing spring and tog- Bearings
gle linkage causing the blade to roll 45 on its
axis, applying contact pressure and latching into Bearings in live parts are constructed of self-
the jaw contact. During opening the first 45 of lubricating low friction materials and require no
insulator rotation allows the compressed spring lubrication or maintenance. Main bearing at the
to return to its original position, and working base of the rotating insulator is of heavy duty
through the toggle linkage, causes the blade to shielded ball bearing construction, providing the
roll and relieve the pressure on the jaw contact necessary strength and rigidity. No field servicing
loops. Continued insulator rotation swings the required.
blade to the fully open position.

Leveling Bolts
All switches are furnished with four leveling bolts Mounting Position
per insulator stack to provide fast, effective The inherent balance of the blade allows the EB
means of aligning insulator stacks in the field. switch to be mounted in any position with no
need for counterbalancing. Field conversion to
another position requires no modification.

Insulators
NEMA standard station post or cap and pin insu-
lators are available as specified.

Field Installation
The simplicity of design assures ease of installa-
tion and years of trouble-free service.
Rigid welded base showing bearing and leveling bolts.

46 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Type EB, EBB, EBF and VEB

Type EBB, Copper Double Side Break Switch

The EBB, double side break switch is a copper version of the aluminum EB switch.
High conductivity copper and copper alloy castings are used in the live, conducting
parts.
The center hinge housing, which is not part of the current path, is made of aluminum
to minimize weight of the switch.
Blade end transitions, or separate blade tips, as described in the EB section are not
necessary on the EBB since silver strips are brazed directly to the copper blade tip
on the EBB.
Available ratings are the same as the EBs. Refer to the rating sheets at the front of
this catalog.

Type EBF, Copper Double Side Break Switch

Blade construction is identical to that of the R14-C. (See R14-C section).

Jaw construction is also identical to that of the R14-C, except that there are two jaws
on the EBF.
As with the R14-C, 69 kV switches have an articulated blade
EBF design is simple, time proven and economical
Ratings up to 72.5 kV at 600 and 1200A.

Type VEB, Aluminum Double Side Break V Switch

The VEB utilizes the same live parts and hinge mechanism as the EB.
All of the standard features and options for the EB apply as well the VEB
Refer to the EB section of this catalog for live part construction details
The V configuration offers a smaller footprint for those applications where structure
space is at a premium. See tabulated drawing in this section
Ratings, like the EB, are up to 345 kV, 1200, 2000 and 3000A.

Accessories and Options for EB, EBB, EBF and VEB switches

Ground switches for either or both ends are available.

Motorized operation
Outriggers for copper or aluminum conductor
Auxiliary switches
Key interlocks
Customized operating mechanisms (May be available at no additional cost.
Consult factory.)

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 47
48 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 1200 Amperes
Terminal Pads
E
E
R 9
EN (4) 16 " Dia.

TO E G
Holes Each End

OP
D
30

75
15
3
1 4"
4"
13 4 "
2" TOGGLEACTION BLADE TIP
R. 10" Furnished on FOR 69 kV ONLY
control phase
only 1 1 2"

A A
9
(2) 16 " Dia. Holes
1 3 4" Each End
NOTE 3
5
8"
600 Amperes Terminal Pads

31 4"
NOTE 2

H NOTE 4

69 kV Amperes Only
NOTE 1
3" (4) 9 16 " DIA.
MTG. HOLES

41 2 " B 41 2 " 6"

F E F
D
NOTES
1 Standard base shown, others available.
2 Silvertocopper contacts furnished unless otherwise specified.
3 Arcing horns furnished only when specified.
4 Leveling screws provided for 69 kV rating.

Voltage Rating CATALOG Insul. Approximate Dimensions in Inches

kV NUMBER Tech. (Refer to Factory for Certified Prints)
Ref.
Max. BIL (1) (2) (3) No. A B D E F H

1 3
15.5 110 15EBF6P3 205 14" 28" 37" 24" 6 2" / / 19 4"

1 3
25.8 150 23EBF6P3 208 14" 28" 37" 24" 6 /2" 23 /4"

3
38.0 200 34EBF6P3 210 18" 36" 45" 33" 6" 27 "
/4
3
48.3 250 46EBF6P3 214 23" 46" 55" 39" 8"
/
31 4"

3
72.5 350 69EBF6P3 216 30" 60" 69" 51" 9" 40 /4"

(1) Catalog numbers shown are with station post insulators.

Ampere Momentary
(2) Catalog numbers shown are for 30 rise ANSIC37.37
Rating Rating
ACCC designation A01.
(3) Catalog numbers shown are for 600 amps. For 1200 600A 40 KA
amps, change 6 to 12 in the catalog number as
required (eg.: 15 kV1200 A: Cat. No. 15EBF12P3). 1200A 61 KA

Type EBF 15.5 kV 72.5 kV 600 and 1200 Ampere

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 49
 DEG . T O OPEN
1 15
9
(4) 16 " Dia. Holes
Each End
50

13 4 "
R NOTE 4
4"
134"
Furnished on 4"
control phase only NOTES
10"
A A 1 Standard base shown, others available.
3
4"
3 NOTE 3 2 2 pair contact loops furnished for 1200 ampere
7 8"
as shown. 3 pair contact loops furnished for
1600 ampere and 4 pair contact loops for
NOTE 2 2000 ampere.
3 Arcing horns furnished only when specified.
4 Corona rings furnished for 230 kV rating
and higher.
83 4"

IN.
J M
H 70

30 30

IN.
J M
NOTE 1
(4) 11
16 " Dia. Mtg. Holes
A A
8"

81 4"
OPEN GAP CLEARANCE
16 3 4 " 38 1 2 " 16 3 4 "
23 8" 67 1 4 " 23 8" (12" at 1050 BIL)
72" (15" at 1300 BIL)

Approximate Dimensions
Voltage Rating CATALOG Insul.
(Refer to Factory
kV NUMBER Tech. for Certified Prints)
Ref.
Max. BIL (1) (2) (3) No. A H J R

72.5 350 69VEB12HP5 278 40" 56" 22" 10"

121 550 115VEB12HP5 286 44" 67" 32" 10"

145 650 138VEB12HP5 288 50" 76" 38" 10"

169 750 161VEB12HP5 291 56" 84" 44" 12"

242 900 230VEB12HP5 304 70" 104" 50" 12"

242 1050 230VEB12HP5 316 75" 114" 57" 12"

362 1300 345VEB12HP5 324 84" 128" 66" 12"

(1) Catalog numbers shown are with station post insulators.

Ampere Momentary
If cap and pin insulators are required, change the P to C
Rating Rating
in the catalog number (eg.: 69VEB12HC5).
(2) When 30 temperature rise unit is required, omit the H in 1200A 61 KA
the catalog number (eg.: 69VEB12P5).
(3) Catalog numbers shown are for 1200 amps. For 1600, 1600A 70 KA
2000, or 3000 amps, change 12 to 16, 20, or 30 in the
2000A 100 KA
catalog number as required (eg.: 161 kV2000 A:
(4)
Cat. No. 161VEB20HP5). 3000A 100 KA
(4) For 3000 amp. switch refer to factory for dimensions.

(4)
Type VEB 72.5 kV 362 kV 1200 thru 2000 Ampere (3000 ampere)

50 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Type VR-1 and VR-2
VERTICAL REACH
SWITCHES
242 kV through 800 kV
4000 Ampere

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 51
 GENERAL VR-1 FEATURES
DESIGN FEATURES Current Carrying Parts
The live parts utilize high strength, high conduc-
Type VR tivity aluminum tubing and castings. Transition to
copper is made in the moving contact areas. At
Vertical Reach Switch the point of transition, copper is hot dip tinned
and bolted to aluminum with stainless steel
The continued demand for high voltage and extra bolts. The joint is treated with oxide inhibitor and
high voltage construction has made it necessary effectively sealed to prevent the entrance of
for the industry to re-examine conventional sta- moisture.
tion design practices with a view toward a reduc- All bearings and counterbalancing springs are
tion in space requirements. Spiraling land costs isolated from the main current path by insulating
and increasing difficulty in obtaining suitable bushings.
substation sites have further emphasized the
need for more compact designs, without sacrific- Upper Contact
ing utility, flexibility and performance. The verti-
cal reach switch, utilizing a vertical rather than The VR-1 switch at 550 kV is adaptable for either
horizontal separation, provides substation fixed or strain bus; at 800 kV its application is
designers with a means to reduce space require- limited to rigid bus. The following table shows
ments by as much as thirty-five percent. the maximum contact deviation under which the
switch has been designed to operate.
APPLICATION: The MEMCO vertical reach switch
is of the semi-pantograph design. It may be The upper contact bar consists of a formed cop-
installed either directly below and in line with the per bar with a silver overlay along each of the
overhead bus or on the diagonal at the point of contact surfaces. The contact bar is furnished
bus crossover. The terminal pads can be with all necessary supporting members for
arranged so that the lower bus may extend in attachment to the overhead bus.
any of four directions; in line with switch or per- The switch jaw employs a multiple-contact
pendicular to switch. reverse loop arrangement which provides uni-
The upper contact of the type VR switch is sup- form contact pressure throughout the plus-or-
ported by the users overhead bus. Close cooper- minus vertical allowable deviation shown below.
ation between switch manufacturer and substa- This contact arrangement takes advantage of the
tion designer, in the early stages of design, is magnetic forces found under short circuit condi-
highly desirable. The switch is available in two tions resulting in increased contact pressure
(2) models; the VR-1 for application at 550 kV through the blow on effect.
through 800 kV, and VR-2 for application at 242
kV through 362 kV.

52 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Switch Operation
In the open position, the blade sections are fold-
ed upon themselves, so that the maximum blade
extension is slightly greater than half the open
gap dimension. Closure of the switch, created by
rotation of the insulator by the operating pipe,
causes the blade to unfold in such a manner that
the jaws rise in a nearly straight vertical path,
opening wide as they approach the upper con-
tact. Further movement causes the blade sections
to assume a straight-line vertical relationship,
with the jaws clamped firmly on the contact bar.
The blade is counterbalanced in all positions so
that only friction forces must be overcome when
opening or closing the switch.

Operators
The switch is available for either single pole man-
ual operation or three pole power operation.

For 4000 Amp, change suffix on catalog number to -40.

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 53
 VR-2 FEATURES Switch Operation
The blade assembly is raised and lowered by the
Current Carrying Parts direct action of a reciprocating, rather than rotat-
The blades are made of high strength, high con- ing, control insulator. The weight of this insulator
ductivity parallel aluminum bus bars which are assembly partially balances the weight of the
trussed to form a rigid unit. Transition to copper blade - the remainder is balanced by a counter-
is made in the moving contact areas. At the point balance assembly located at the base of the insu-
of transition, copper is hot dip tinned and bolted lator stack. A single column insulator furnishes
to aluminum with stainless steel bolts. The joint the main support, and the entire assembly is
is treated with oxide inhibitor and effectively designed for mounting on a single column struc-
sealed to prevent the entrance of moisture. All ture.
bearings and springs are isolated from the main The blade weight is slightly underbalanced so
current path by insulating bushings. that the switch has no tendency to move upward
on its own. A downward pull on the control insu-
Upper Contact lator stack will cause the blade to rise and unfold
in such a manner that the blade and contacts fol-
The upper contact consists of a copper plate low a nearly straight vertical path when
located within a bell shaped housing which approaching the upper contact. The contact fin-
shields the contact surface from ice formation. gers are guided onto the flat copper contact plate
The complete assembly is rigidly fixed to the by guide horns on the blade and slide approxi-
upper bus. mately 4 onto the plate. Since the actual pivot
The blade contact consists of multiple reverse point at the center of the blade (elbow) has
loop copper alloy fingers, with silver overlay at passed over-center, there is no force tending to
the contact point. When the switch is in the open open the switch.
position the contact fingers are arranged to touch
the opposing contacts. During closure of the Operators
switch the contact fingers deflect as they slide on
the upper contact plate. The switch is available for either single pole man-
The reverse loop design takes advantage of mag- ual operation, three pole manual operation, or
netic forces found under short circuit conditions three pole power operation.
to increase the contact pressure through the
blow on effect.

VR-2 ACCESSORIES
ALLOWABLE DEVIATION OF UPPER CONTACT Switch Support Structures
Relationship with Fixed Bus Both the VR-1 and VR-2 are available with or
without supporting structure. Supporting struc-
Contact Plate 242 kV - 362 k V
tures can be of the tubular, tapered polygon,
Vertical 3 wide flange or lattice design.
Parallel 4
Perpendicular 4
Ground Switches
Ground switch attachments of the same or lower
momentary ratings can be installed as required.

Terminal Connectors &

Outriggers
Terminal connectors and outriggers can be fur-
nished to meet any particular requirement.

54 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 55
 Morpac/Memco
Operating Mechanisms
Complete manual operating mechanisms are supplied with all group operated switches. Included are operat-
ing lever, vertical pipe control, outboard bearing, interphase pipe, levers, clevises, couplings and intermedi-
ate guides. Either torsional or reciprocating types are supplied, as best suits each individual installation. A
toggle arrangement is used in both types of controls to mechanically lock the switch in the open or closed
position. Means are also provided to padlock the handle in either position. Position indicators to show OPEN
or CLOSED are available at extra cost. Flexible grounding braid is supplied with pipe controls. Turnbuckles
and insulating fiberglass or porcelain inserts for pipe controls as well as kirk key interlock provisions are
available at extra cost.

SWITCHES THROUGH 69 kV are supplied with up to 30 feet of galvanized vertical pipe, with intermediate
guides and fittings, as standard. Additional lengths, with intermediate guides and fittings, are available at
extra cost. The outboard bearing is bronze and requires no maintenance.

SWITCHES RATED AT 115 kV AND ABOVE are supplied with up to 40 feet of galvanized vertical pipe as stan-
dard. Additional 10 to 20 sections with intermediate guides and fittings are available at extra cost. The out-
board bearing is a heavy duty greaseless type ball bearing unit with stainless steel balls. It will give a lifetime
of dependable maintenance-free service under the most adverse conditions.

Manual worm-gear operators are available for either right or left hand operation. The units are designed for
dependable service with minimum maintenance and are shipped completely lubricated and adjusted.

Motor operators and auxiliary switches are available to meet any requirements. Please refer to the factory for
specific information and prices.

56 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 SEO 3000
Stored Energy Switch Operator
Morpacs 3000 series of SEOs are available to operate most distribution switches on the
market today. They incorporate a custom built 24 VDC permanent magnet motor specifi-
cally designed for this service. The unit comes complete with pole mounting hardware and
internal batteries. The unit is available as a basic motor operator, or with auxiliary elec-
tronics.

SPECIFICATIONS
WEIGHT 180 lbs Nominal
CABINET 18.9 W x 18.9 H x 10.8 D Steel
w/ASA Gray Enamel Paint
MOTOR 3.6 HP 24 VDC
CONTROL 24 VDC
BATTERY 33 Amp. Hour Gelled Electrolyte (2)
CHARGER 50 Watt - Regulated 24 VDC
SPEED 14 Vertical Movement @430 lbs Load @ 1/2 Second
STALL TORQUE 8700 Inch Lbs
CONTROL ADJ. 0 to 15 Adjustable Control Rod Travel

STANDARD FEATURES
Terminal Board ready for wiring to RTU/PLC SCADA Controllers
Oversize 33 AmpHour battery, capable of supporting additional RTU/PLC SCADA
Controllers and Communications Equipment.
Remote or Local Battery Check with Pass/Fail Status.
Automatic Lockout of Operation if Battery Test Fails.

STATUS
Switch Open 1 Form C Contact
Switch Closed 1 Form C Contact
Remote / Local Contact Closure in Remote disables
Local Operation and Vice Versa
Batt. Test in Progress Open / Close Operation Blocked
Low Battery Open / Close Operation Blocked Until Serviced.

CONTROL
Open the Switch Energize Open Relay - 50 ma
Close the Switch Energize Close Relay - 50 ma
Initiate Battery Test Energize Battery Test Timer

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 57
 OPTIONS
SEO 3000R Reciprocating Operation - Up/Down
SEO 3000T Torsional Operation - Rotary

Stainless Steel Cabinet Operations Counter

Deep Door for Mounting of Auto Open or Close on Loss of AC Line
Controller and Communications Auto Transfer (Master / Slave)
Thermostatically Controlled Heater 2A & 2B Auxiliary Contacts
Solar Power Charger Intrusion Alarm

Contact the factory for pricing, drawings or full specifications.

58 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Morpac Motor Operator
Type MOE-1000
The Morpac Motor Operator, Type MOE, is an electrical all weather switch operat-
ing device. The standard heavy gauge aluminum cabinet has three hinged, remov-
able doors for easy access to all wiring and components. (Stainless steel cabinets
are available as well). The front door padlocks shut. Opening the front door
allows access to the latches for the side doors. A large, bolted conduit entrance
panel is located on the bottom of the cabinet. Morpacs upper decoupler is used to
physically separate the motor operator from the vertical operating pipe. The
decoupler can be padlocked in either the open or closed position.

Morpac uses a single stage, heavy duty, sealed cycloid reducer for long mainte-
nance free life and extreme duty applications. The open and close limit switches
are infinitely adjustable up to 360 degrees. Operating time is from 6 to 12 sec-
onds* for typical 180 degree rotation. Full local control with pushbuttons and indi-
cator lights are standard. Also standard are a counter, thermostatically controlled
heater and 6 infinitely adjustable auxiliary switches which can be set up as form
c or a and b types. Additional auxiliary switch stages are available.
Operating voltages available are 120 or 240 VAC and 24, 48, 125 or 250 VDC. 24
and 48 VDC units can be provided with batteries and chargers if desired.

Specifications
Voltages, DC 24, 48, 125 and 250
Voltages, AC 120 and 240
Operating time 6 to 12 seconds*
Torque 20,000 pounds-inch
Rotation Field Reversible,
Up to 360 degrees
Motor 3/4 HP

DC Motor Current Draw

Voltage Full Load Locked Rotor
24 30A 191A
48 14A 95A
125 5.2A 64A
250 2.65A 32A

*Faster times are available but not

recommended for switches 115 kV
Morpac MOE 1000 and above.

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 59
 Morpac Type MOE 1000
COMPONENTS AND FEATURES

STANDARD FEATURES

100 watt thermostatically controlled strip heater.

22 millimeter open, close and stop pushbuttons.

Super bright led position indicator lights.

Infinitely adjustable auxiliary switch stages, wired to terminal block.

Removable auxiliary operating crank handle, electrically interlocked with control.

Hinged removable pad lockable front door.

Hinged removable side doors.

1
5052 H32 8 inch aluminum enclosure

Large conduit entrance plate (4.5 x 13.75) for easy wiring access.

NOTE: IF MOTOR OPERATOR IS IN THE OPPOSITE POSITION OF THE AIR SWITCH THE DECOUPLER
WILL PREVENT COUPLING TO THE MOTOR OPERATOR UNTIL BOTH ARE SYNCHRONIZED

DECOUPLER
DECOUPLER MECHANISM LOCKING TAB
SHOWN IN COUPLED POSITION
RAISING OF SOCKET ARM
DECOUPLES MOTOR OPERATOR

PAD LOCKABLE OPEN

AND CLOSE TABS

MANUAL CRANK
INTERLOCK

INFINITELY
ADJUSTABLE
AUX. SWITCH

AUX. SWITCH TERMINAL BLOCKS MAIN TERMINAL BLOCK

60 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Morpac Type MOE 1000

ELECTRICAL CONNECTIONS

Incoming electrical connections are made on the main terminal board. The schematic shown
below is for general information only. Wire per the schematic supplied with your motor operator.

CRANK
INTERLOCK
F1 PBS S1 VDC CONTROL

10 OHM

C1 C2
PBC
PBO

R1 R2
+ M

G R R1 OPEN C1 C2 R2
CLOSE
SWITCH SWITCH
L1 L2
C2 C1 R2 R1

10 OHM

OC LS8
LS7
F2
VDC RETURN

R1 RELAY, CONTROL, OPEN SWITCH, 10K OHM COIL

R2 RELAY, CONTROL, CLOSE SWITCH, 10K OHM COIL
C1 CONTACTOR, MOTOR, OPEN SWITCH, COIL 5.6K OHMS
C2 CONTACTOR, MOTOR, CLOSE SWITCH, COIL 5.6K OHMS
OC OPERATION COUNTER TB3
M MOTOR 3/4 HP 1
LS LIMIT SWITCH, 8 POLE ADJUSTABLE (2), LS1 1A
TB2 2
(QTY AND CONFIGURATIONS VARIABLE)

(SHOWN WITH SWITCH CLOSED)

1 3
120 VAC
2 LS2 4 2A
NEUTRAL
BY
AUX CONTACTS

3 5
CUSTOMER
OPEN (REMOTE)
LS3 6 3A
4
+ VDC COMM.
7
5
CLOSE (REMOTE) LS4 4B
8
6
+ VDC RETURN
9
(SOURCE VOLTAGE)
7 LS5 5B
+ VDC 10
(SOURCE VOLTAGE)
11

LS6 12 6B

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 61
 OUTDOOR HOOKSTICK
OPERATED DISCONNECT
SWITCHES
7.5 kV through 169 kV
600 to 6000 Ampere

TYPE STV

TYPE DHS

62 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 MEMCO Design Hookstick Switches

GENERAL Hinge Contact

High-pressure, self-wiping ring shaped hinge
DESIGN FEATURES contacts are standard on all switches. Heavy
phosphor bronze spring washers assure uniform
contact loading.
Type STV & STU
Typical hinge assembly 8.25-72.5 kV, 600 ampere
The STV or STU type of outdoor disconnect is
available in voltage ratings from 8.25 to 169 kV
and in continuous current ratings from 600 to
3000 ampere. The STV and STU switches are
identical in design except that one is arranged for
vertical mounting and the other for underhung
mounting.

APPLICATION: As a single pole disconnect it can

be readily used in substations or on transmission
and distribution lines.

FEATURES

Jaw Contact
High-pressure, self-wiping line type contacts are
provided on all switches. The contact pressure is
maintained by heavy phosphor bronze spring
Unitized Jaw & Hinge
washers, or stainless steel coil springs, properly
Construction
positioned on each side of the contact surfaces. Single unit castings are used for both hinge and
jaw terminals thereby reducing the number of
Typical jaw assembly 8.25-72.5 kV, 600 ampere transfer points and providing a better distribution
of current.

Contact Surfaces
Standard contact surfaces are determined by
switch rating and contact construction and are
shown in the following table. Other combinations
of silver and copper may be specified on the
hinge and/or jaw as a special option.

Switch Rating Hinge Contact Jaw Contact

(non make-break) (make-break)
8.25 - 72.5 kV:
600 Ampere copper to copper copper to copper
1200 Ampere copper to copper silver to copper
2000,3000 Ampere silver to copper silver to copper
121 - 169 kV:
All ratings silver to copper silver to copper

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 63
 MEMCO Design Hookstick Switches
Blade Construction Rigid Blade Guides
All switches are furnished with blades of hard Rigid cast bronze blade guides are provided to
drawn high conductivity round edge copper bar. assure positive closing of blade on each opera-
Switches through 2000 ampere are provided with tion, regardless of position of hookstick.
wide truss type blades. Copper cross braces pro-
viding extra strength and rigidity are utilized on
the larger switches. Terminals
Terminal pads are provided with NEMA standard
9/16 holes on 13/4 centers.
Large Opening Eye
A large opening eye of heavy bronze construc-
tion assures ease of operation. Blade Stop
Double 90 open blade stops are standard. Other
opening stops can be provided when specified.
Positive Blade Latch
Positive side-operating, phosphor bronze spring-
type blade latches prevent the switch from open- Counterbalancing
ing as a result of fault current or through vibra-
Switches rated 72.5 kV, (5 B.C.) and above are
tion.
normally furnished with a compression spring
counterbalancing assembly which offsets the
Pry-Out Leverage weight of the blade when opening or closing the
The action of the opening eye with its increased switch. This unique feature makes it practical to
leverage spreads the blade latches and imparts use this switch through 169 kV.
an easy initiating motion to open the switch.

Hinge assembly arrangement of a closed, under- Hinge assembly showing underhung mounted,
hung mounted, switch complete with counter- counterbalanced switch when in open position.
balancing.

64 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 MEMCO Design Hookstick Switches
Bases Standard Specifications
Rigid galvanized structural steel channel bases The type STV and STU disconnect switches meet
are furnished on all switches. Switches through or exceed all of the requirements of NEMA, IEEE
72.5 kV, (3 B.C.) are normally furnished on flat and ANSI specifications. They are designed to
channel bases. Welded, built-up double channel give years of trouble-free service under the most
bases are furnished at the higher voltage ratings. adverse atmospheric and climatic conditions.
Aluminum bases are available when specified.

Tandem Transfer and Regulator

Factory Assembled & Adjusted
Bypass Switches
Switches 48.3 kV and below are pre-assembled
and adjusted at the factory. Switches 72.5 kV and These switches can be arranged for either under-
above are assembled and adjusted, less insula- hung or vertical mounting and employ the same
tors. Only minor adjustments, if any, are required design concepts as the STV and STU discon-
at installation. nects.

Angular Mounted Switches

A single pole angular mounted disconnect is
available at 600, 1200, and 2000 ampere from
8.25 kV through 38.0 kV. It is designated as a type
STA and utilizes the same parts that are common
on the STV and STU switch.

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 65
 9
41 8" (2) 16 " Dia. Holes 31 8"
Each End
9
(4) 16 " Dia. Holes 1200 Amperes 158"
Each End Terminal Pads

1 3 4 " 4"
134" 1 3 4"

(Jaw End) 600 & 900 AMP (Hinge End)

1 3 4" 1 3 4"
TERMINAL PADS
43 4 " 43 4 "

1
6 2 " = 600A
6 1 8 " = 600A & 900A 53 4 " 534"
& 900A 9
7" = 1200A (4) 16 "
Dia. Holes
73 4 " = 1200A 8" = 2000A 90 STOP Each End
9 3 8 " = 2000A (HINGE END)
NOTE 2 -others available
(JAW END)
5
8"=600, 900,
& 1200 AMPS
7
" =2000 AMPS 1 3 4" 134"
2000 AMP
8

(Jaw End) (Hinge End)

2 1 2 " = 600A TERMINAL PADS
& 900A
3 1 4 " = 1200A NOTES
NOTES
4" = 2000A
H 1 Standard base shown, others available.
(4) 9
16 " Dia. Mtg. Holes
2 Coppertocopper contacts furnished on all other
NOTE 1
switches unless otherwise specified. Silvertocopper
S contacts furnished on 1200 amp jaw end, unless
otherwise specified. Silvertocopper contacts
furnished on 2000 amps, unless otherwise specified.
Refer to factory for 3000 amp contact specifications.
F A F Y
3 Single eye shown, double eye available
1" E 1" for some models of 3000 amp.
D 4 Spring barrel furnished on 69 kV, 2000 amp only.

Voltage Rating CATALOG Insul. Approximate Dimensions

kV NUMBER Tech. (Refer to Factory for Certified Prints)
Ref.
Max. BIL (1) (2) (3) (4) No. A D E F H S Y

3
8.2 95 7STV6P3 202 12" 20" 18" 4" /
9 4" 2" 4"

1
15.5 110 15STV6P3 205 15" 23" 21" 4" /
12 4" 2" 4"

1 "
25.8 150 23STV6P3 208 18" 26" 24" 4" 16 /4 3" 4"

1
38 200 34STV6P3 210 24" 32" 30" 4" 20 2" / 3" 6"

1 1
48.3 250 46STV6P3 214 30" 41" 39"
/
5 "
2 /
24 "
2
3" 6"

1 1
72.5 350 69STV6P3 216 42" 53" 51" 5 /" 32 / " 3" 8"
2 2

(1) Catalog numbers shown are with station post insulators.

If cap and pin insulators are required, change the P to C Ampere Momentary
in the catalog number (eg.: 7STV6C3). Rating Rating
(2) Catalog numbers are for vertical mounted switches. If underhung 600A 40 KA
mounting is required, change the V to U in the
catalog number (eg.: 7STU12C3). 900A 40 KA
(3) Catalog numbers are for 30 rise ANSIC37.37 ACCC designation A01.
(4) Catalog numbers shown are for 600 amps. For 1200, or 2000 amps, 1200A 61 KA
change 6 to 12, or 20 in the catalog
2000A 100 KA
number as required (eg.: 8.2 kV1200 A: Cat. No. 7STV12P3).
(5)
(5) For 3000 amp switch, refer to factory for dimensions. 3000A 120 KA

(5)
Type STV & STU 8.2 kV 72.5 kV 600 thru 2000 Ampere (3000 ampere)

66 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 67
68 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Morpac Design Hookstick Switches
The Morgan hook operated switch line offers a wide selection of configurations to accom-
modate any installation, including tandem transfer and non-sequenced regulator by-pass
models. Designed for heavy duty substation and distribution use, these switches have been
operating in extreme conditions around the world far in excess of 20 years. Switches meet
or exceed the original ANSI C37.34 30 C temperature rise standard.

GENERAL Hinge
Belleville washers insure a constant pressure on
DESIGN FEATURES the hinge contact.

Base Contact
High-pressure, self-wiping contacts are provided.
All steel bases are hot-dip galvanized per ASTM
Cast bronze ears enable portable load-buster
A123-89ea1. Special bases can be provided for
use on all switches.
different mounting configurations. Aluminum
bases also available.
Latch
A positive latching mechanism eliminates the
Terminals possibility of the blade opening due to vibration
or high fault current. The hook must be pulled in
NEMA standard 2 and 4 hole terminal pads are
order to release the blade latch.
machined out of cast contact metal alloy C83300.
Tinned terminal pads are available upon request.
Blade
Ratings All blades are made from high conductivity,
round edge, hard drawn bus copper alloy 110 for
Voltage ratings up to 169 kV. Current rating up to
superior performance and long life.
3000 Amperes.

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 69
 Morpac Design Hookstick Switches
Hookstick Disconnect Switches

All current carrying

parts are
copper/copper
alloys.

All switches are

heavy duty substa-
tion class designed
for 30C tempera-
ture rise.

70 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Interrupters
QUICK BREAK WHIPS
There are many factors which govern the interrupting capabilities of a disconnect switch. Some of these
factors are: weather conditions, the amount of current, speed of operation, contamination, and the recovery
voltage. Very high speeds of contact separation are required to establish the dielectric strength of the air gap
ahead of the rise in recovery voltage.
Morpac has taken the speed of operation requirement out of the hands of the switch operator and
designed it into the quick break whip, thereby keeping the velocity constant. This device is a whip machined
from spring quality stainless steel. The whip is tapered, permitting maximum deflection and high tip speeds,
without exceeding the elastic limit of the material.
In the closed position, the whip is engaged in a retaining catch and as the switch is opened, the whip is
subjected to a large deflection and, as the switch continues to open, the whip is released and moves with
spring action at high speed to the full open position. Through special design the whip is sufficiently damp-
ened so that over-travel does not occur, and rebound is held to a minimum.
The recommended maximum interrupting range of application for the Morpac quick break whip is:

LINE BREAKING CURRENT TRANSFORMER MAGNETIZING CURRENT

7.5 - 115 kV 12 amps 7.5 - 69 kV up to 35,000 KVA
138 kV 10 amps 115 - 161 kV up to 100,000 KVA
161 kV 8 amps

Magnetizing current in modern transformers is about 1 to 6 amperes. Where the actual value for a par-
ticular transformer is not known, it can be approximated. For units in the area of 5,000 KVA, the magnetizing
current is approximately 1.5% of full load. At 10,000 KVA and above, 1.0% is a good approximation. These val-
ues are based on single and three phase multiple winding transformers. Autotransformer magnetizing cur-
rent is normally less than the multiple winding units.

Field experience by utilities has shown that in network/loop/parallel switching up to 100 amperes of load
current can be safely interrupted in 69 kV systems and below. This is due to the low recovery voltage across
the switch as compared to radial feed/line charging where a high recovery voltage is seen.

The actual system parameters should be verified by the customer before specifying the addition of a quick
break whip.

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 71
 Amprupter

The Morpac Amprupter provides full load switching of 600 amps on 15, 25 and 38 KV systems for either
substation or feeder applications. It is designed to operate under adverse conditions for the following appli-
cations and others as well:

Full load dropping at full line voltage

Load splitting or loop and parallel switching
Interruption of cable or line charging currents
Interruption of transformer magnetizing currents

Morpacs Amprupter is an expulsion type interrupter that vents gases safely without an external arc. The
contacts are spring loaded. When the switch is opened by line personnel, the pick up arm is engaged. Once
the arm has traveled over center, the contacts snap open. This opening speed is independent of the opera-
tors speed. Thus safe and consistent interruption is assured.

Morpacs amprupters are typically used on Morpacs CSB switches, but can be adapted to other manufactur-
ers switches as well.

72 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
 Vacuum Interrupters
The Morpac Type VI Vacuum Interrupter is a field tested and proven design which gives you bolt-on load
break capability. The unit is factory sealed and adjusted for ease of installation, whether you are mounting it
on a new Morpac switch or retrofitting it to another manufacturer's switch. It is designed to last the life of the
switch with no maintenance. Each module within the unit can be individually field tested to verify its integri-
ty.

Refer to the table to determine the number of modules required for your application. Please also note that
depending on the type of switch, there may be a mechanical limit to the size of interrupter that can be used.
For instance, most center break switches are limited to one bottle.

VI-1. Single Bottle Vacuum Interrupter

For Multiple Bottle Units

For Multiple Bottle Units

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 73
 MORPAC VACUUM INTERRUPTERS
N umber of series vacuum bottles required

Max 70% PF Magnetizing Cable charging Capacitor Bank Vac Bottles Catalog
Voltage Load current current current Grounded Required Number
Neutral
15.5 2000 800 600 800 1 VI-1
2000 1000 600 1000 2 VI-2
25.9 1600 800 140 800 1 VI-1
2000 1000 600 1000 2 VI-2
38 2000 700 600 700 2 VI-2
2000 700 600 700 3 VI-3
48.3 2000 700 450 700 2 VI-2
2000 800 600 800 3 VI-3
2000 1000 600 1000 4 VI-4
72.5 2000 600 450 600 3 VI-3
2000 600 600 600 4 VI-4
2000 600 600 600 5 VI-5
2000 600 600 600 6 VI-6
121 2000 600 450 600 5 VI-5
2000 600 600 600 6 VI-6
2000 600 600 600 7 VI-7
145 2000 600 450 600 6 VI-6
2000 600 600 600 7 VI-7
169 1200 450 110 450 6 VI-6
2000 600 450 600 7 VI-7
242 2000 450 110 450 8 VI-8

Single Bottle Interrupters for Reduced Voltage Applications

Single bottle interrupters can be used at higher line voltages for parallel switching
or loop splitting applications. Caution: The peak recovery voltage must never
exceed 30 KV for these applications.

74 Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332
Condition of Sale & Warranty
WARRANTY The Company warrants to the purchaser that the apparatus to be delivered hereunder will be free
from defects in material, workmanship, and title and will be of the kind and quality designated or
5 YEARS described in the contract. The foregoing warranty is exclusive and in lieu of all other warranties
whether written, oral, or implied (including any warranty or merchantability of fitness for purpose).
If it appears within five years from the date of shipment by the Company that the apparatus deliv-
ered hereunder does not meet the warranties specified above and the Purchaser notifies the
Company promptly, the Company shall thereupon correct any defect, including nonconformance
with the specifications, at its option, either by repairing any defective part or parts or by making
available at the Companys plant a repaired or replacement part. The conditions of any tests shall
be mutually agreed upon, and the Company shall be notified of, and may be represented at all
tests that may be made. The liability of the Company to the Purchaser (except as to title) arising
out of the supplying of the said apparatus, or its use, whether on warranty, contract, or otherwise,
shall not in any case exceed the cost of correcting defects in the apparatus as herein provided
and upon the expiration of said five years, all such liability shall terminate. The foregoing shall con-
stitute the sole remedy of the Purchaser and the sole liability of the Company.

PREPAID FREIGHT Freight prepaid and allowed on orders over $5,000.00 in the continental USA. For orders less than
$5,000.00, freight is prepaid and billed. Products shipped on truck via common carriers FOB des-
tination. Morpac will file any freight claims as long as any loss or damage is noted on the receiving
copy of the freight bill. Damage that is not noted at time of receiving can not be paid by Morpac.

SALES TAX The Companys prices do not include sales, use, excise, or similar taxes. Consequently, in addi-
tion to the price specified herein, the amount of any present or future sales, use, excise, or other
similar tax applicable to the sale of the apparatus hereunder shall be paid by the Purchaser, or in
lieu thereof the Purchaser shall provide the Company with a tax-exemption certificate acceptable
to the taxing authorities.

RETURNS & Factory written approval is required for all returns. Returns are subject to freight and restocking
CANCELLATIONS charges. Cancellation charges are based on manufacturing and engineering costs incurred as of
the date of cancellation.

FIELD SERVICE A Field Service Engineer is available at a cost of $800.00 per day, plus transportation, lodging and
meals. Charges are from time of departure until time of return.

EXPORT Export crating costs an additional 10% of quoted price, and freight will be billed to purchaser.

DELIVERY Shipping dates are approximate and are based upon prompt receipt of all necessary information.
The Company shall not be liable for delays in delivery or failure to manufacture or deliver (1) due
to causes beyond its reasonable control, or (2) due to acts of God, acts of the Purchaser, acts of
civil or military authority, priorities, fires, strikes, floods, epidemics, war, riot, delays in transportation,
or car shortages, or (3) inability due to causes beyond its reasonable control to obtain necessary
labor, materials, components, or manufacturing facilities. In event of any such delay the date of
delivery shall be extended for a period equal to the time lost by reason of the delay.

LIMITATION In no event shall the Company be liable for special or consequential damages. The Companys
OF LIABILITY liability or any other claim for loss or liability arising out of or connected with this contract, or the
manufacture, sale, delivery, resale, or use of any apparatus covered by this contract (including,
but not limited to, loss or liability arising from breach of contract) shall in no case exceed the unit
price of such apparatus or part thereof involved in the claim, except as provided in the paragraph
entitled Warranty.

MINIMUM ORDER A minimum charge of $100.00 is required on all orders.

SPARE PARTS Morpac recommends that no spare parts be purchased until needed. We can ship any part
commonly needed in 24 hours from our stock.

Morpac Industries, Inc. 2725 East Ginter Road Tucson, Arizona 85706 520-294-3452 FAX 520-294-3332 75
 Catalog M-101, January 2003

2725 East Ginter Rd. Tucson, Arizona 85706 USA

(520) 294-3452 Fax (520) 294-3332
E-mail: switches@morpac.com