LAS Models
LAS Models
Arresters
IEEE Intermediate and Station Class
IEC Station Class
30 - ARRESTERS
Warranty
Warranty – Material Limitation of Liability
HPS warrants to Buyer that the products sold will IN NO EVENT AND UNDER NO CIRCUMSTANCES
be free of defects in workmanship or material for a SHALL HPS BE LIABILE TO BUYER OR TO ANY
period of one (1) year (or as otherwise specified) from OTHER PERSON FOR ANY INDIRECT, SPECIAL,
the date of original shipment by HPS when stored, CONSEQUENTIAL OR INCIDENTAL LOSSES OR
installed, operated or maintained in accordance with DAMAGES, INCLUDING, WITHOUT LIMITATION,
recommendations of HPS and standard industry DAMAGE TO OR LOSS OF USE OF ANY PRODUCT,
practice and when used under proper and normal LOST SALES, OR PROFITS, OR DELAY OR FAILURE TO
use. HPS shall in no event be responsible or liable PERFORM THIS WARRANTY OBLIGATION, OR CLAIMS
for modifications, alterations, misapplication or OF THIRD PARTIES AGAINST PURCHASER, ARISING
repairs made to its products by Buyer or others, or OUT OF OR IN CONNECTION WITH THE SALE,
for damage caused thereto by negligence, accident INSTALLATION, USE OF, INABILITY TO USE, OR THE
or improper use by Buyer or others. This warranty REPAIR OR REPLACEMENT OF, HPS’ PRODUCTS. As
does not include reimbursement for the expenses stated herein, the term “person” shall include without
of labor, transportation, removal or reinstallation of limitation, any individual proprietorship, partnership,
the products. This warranty shall run only to the first corporation or entity.
Buyer of a product from HPS, from HPS’ Buyer, or from
an original equipment manufacturer reselling HPS’ Exclusive Remedy
product, and is non-assignable and non-transferable
and shall be of no force and effect if asserted by any Any claim by Buyer that a product is defective or
person other than such first Buyer. THE FOREGOING non-conforming shall be deemed waived by Buyer
WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL unless submitted to HPS in writing within thirty (30)
OTHER WARRANTIES WHETHER WRITTEN, days from the date Buyer discovered, or by reasonable
ORAL, EXPRESSED OR IMPLIED. THERE ARE NO inspection should have discovered the alleged defect
WARRANTIES OF MERCHANTABILITY OR FITNESS OF or non-conformity. Any warranty claim must be
ANY PRODUCT FOR A PARTICULAR PURPOSE. brought within one year of discovery of the alleged
defect or non-conformity. Upon prompt written notice
Warranty – Application by the Buyer that a product is defective or non-
conforming, HPS’ liability shall be limited to repairing
HPS does not warrant the accuracy of and results from or replacing the product, at HPS’ option.
product or system performance recommendations
1850 Richland Avenue, East, Aiken, SC 29801
resulting from any engineering analysis or study. This
applies regardless of whether a charge is made for the HubbellPowerSystems.com
recommendation, or if it is provided free of charge. 1.573.682.5521 o
Responsibility for selection of the proper product of 1.573.682.8714 f
application rests solely with the Buyer. In the event hpsliterature@hubbell.com
of errors or inaccuracies determined to be caused by
HPS, its liability will be limited to the re- performance NOTE: Because Hubbell Power Systems Inc., has a policy of continuous
product improvement, we reserve the right to change design and
of any such analysis or study. specifications without notice.
30-2 | www.hubbell.com/hubbellpowersystems
30 - ARRESTERS
Table of Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Products
Polymer Housed Surge Arresters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PVI-LP, IEEE Intermediate Class/IEC Class SL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
EVP, IEEE Station Class/IEC Class SM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
SVN, IEEE Station Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
PH3, IEC Class SM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
PH4, IEC Class SH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
SVNH, SVNX and SVNR, IEEE High Strength Station Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Nameplates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Seismic Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Arrester FAQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Engineering Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
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30 - ARRESTERS
Hubbell Arresters
Over 70
years of
Arrester
Innovation
Ohio Brass
introduced
its first surge
arresters more
than a half
century ago.
Since then,
Hubbell Power
Systems (HPS)
and the Ohio
Brass brand
have led the
industry in
innovation,
reliability and service.
During this time Hubbell, through the Ohio Brass brand name, introduced the
world’s first polymer-housed arresters, advanced MOV disc technology and refined
manufacturing processes. The company has obtained many patents for products and
design features that have helped keep Hubbell arresters at the forefront of technology.
Since your customers’ power is only as reliable as your delivery system, trust your lines,
substations and reputation to Hubbell Power System’s Ohio Brass arresters.
30-4 | www.hubbell.com/hubbellpowersystems
30 - ARRESTERS
Overview
Equipment Protection is Job One – Next to your
people, your power grid infrastructure is your largest
and most valuable investment. Protect it with Hubbell
Power Systems (HPS) surge arresters. Every lightning
strike, insulator flashover and switching surge adds
wear and tear to your equipment, prematurely aging it,
and requiring you to shoulder the costs of replacement.
Even the smallest surge can shorten your equipment’s
life. Surge arresters, however, extend the life of your
system by limiting the voltage across your equipment
during a surge event.
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30 - ARRESTERS
30-6 | www.hubbell.com/hubbellpowersystems
30 - ARRESTERS
‡ For ratings above 115kV MCOV, the maximum working cantilever is 5,000 in-lb (565 Nm) & the maximum short-term
cantilever is 10,000 in-lb (1130 Nm) Applies to arresters with a tripod mounting base.
www.hubbell.com/hubbellpowersystems | 30-7
30 - ARRESTERS
30-8 | www.hubbell.com/hubbellpowersystems
Polymer Housed
Surge Arresters
30 - ARRESTERS - PRODUCTS
Construction:
• “Wrap” design, using fiberglass reinforced epoxy stranding to form
a wrapped envelope directly over the MOV discs
• ESP™ rubber housing applied over wrapped MOV module
• Silicone compound interface between module and housing to render
a void-free assembly
• Tripod base (Slotted 8.75 (222) - 10.0 (254) inches (mm) bolt circle)
At-a-Glance:
• Less than half the weight of a comparably rated housed arrester
• Narrow profile for reduced clearance to ground and between phases
• Install straight from the package – no field assembly required
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30 - ARRESTERS - PRODUCTS
www.hubbell.com/hubbellpowersystems | 30-11
30 - ARRESTERS - PRODUCTS
300805 6 5.1 15.4 (391) 6.8 (173) 110 52 3.3 (84) 4.6 (117) 6 (2.7)
300808 9 7.65 15.4 (391) 6.8 (173) 110 52 3.3 (84) 4.7 (119) 6 (2.7)
300809 10 8.4 15.4 (391) 6.8 (173) 110 52 3.5 (89) 4.9 (124) 6 (2.7)
300610 12 10.2 15.4 (391) 6.8 (173) 110 52 3.5 (89) 4.9 (124) 6 (2.7)
300813 15 12.7 30.8 (782) 12.2 (310) 175 105 4.8 (122) 6.2 (157) 10 (4.5)
300815 18 15.3 30.8 (782) 12.2 (310) 175 105 5.2 (132) 6.6 (168) 10 (4.5)
300817 21 17 30.8 (782) 12.2 (310) 175 105 6.2 (157) 7.6 (193) 10 (4.5)
300620 24 19.5 30.8 (782) 12.2 (310) 175 105 6.2 (157) 7.6 (193) 10 (4.5)
300822 27 22 46.2 (1173) 17.6 (447) 204 134 8.2 (208) 9.6 (244) 14 (6.4)
300824 30 24.4 46.2 (1173) 17.6 (447) 204 134 8.4 (213) 9.8 (249) 14 (6.4)
300629 36 29 46.2 (1173) 17.6 (447) 204 134 8.4 (213) 9.8 (249) 14 (6.4)
300831 39 31.5 61.6 (1565) 23.0 (584) 260 180 11.4 (290) 12.8 (325) 17 (7.7)
300636 45 36.5 61.6 (1565) 23.0 (584) 260 180 11.4 (290) 12.8 (325) 17 (7.7)
300639 48 39 61.6 (1565) 23.0 (584) 260 180 11.7 (297) 12.8 (325) 17 (7.7)
300642 54 42 77.0 (1956) 28.4 (721) 315 225 14.4 (366) 15.8 (401) 20 (9.1)
300648 60 48 77.0 (1956) 28.4 (721) 315 225 14.4 (366) 15.8 (401) 20 (9.1)
300657 72 57 92.4 (2347) 33.8 (859) 370 270 18.4 (467) 19.8 (503) 23 (10.5)
10.0 B.C.
8.75 B.C. 10.0 B.C.
8.75 B.C.
.56 WIDE SLOT
3 PLACES @ .56 WIDE SLOT
120° APART 3 PLACES @
kV RMS
kV RMS
kV RMS
kV RMS
120° APART
RATING
YEAR
MCOV
RATING
CATALOG
NUMBER
CYCLE
DUTY
YEAR
MCOV
RATING
CATALOG
NUMBER
CYCLE
DUTY
30-12 | www.hubbell.com/hubbellpowersystems
30 - ARRESTERS - PRODUCTS
30 X YYY - 3001
0 2 MCOV
X -> 1 3 MCOV
(standard) (underhung) Rating YYY YYY
Rating (kV)
"0" ... Small Top, Tripod Base
"0" ... Small Top, Tripod Base
"1" ... Small Top, Small Base
"1" ... Small Top, Small (vertical
Base mointing only)
(kV)
Top Cap Cap Tripod Tripod
(vertical mointing only)
2.55 803 22 822
Bottom Tripod Cap Cap Tripod
5.1 805 24.4 824
7.65 808 29 629
8.4 809 31.5 831
10.2 610 36.5 636
12.7 813 39 639
15.3 815 42 642
17 817 48 648
"0" ... Small Top, Tripod
"0"Base
... Small Top, Tripod Base "1" ... Small Top, Small"1" ... Small"2"
Base
"2" ... Tripod
... Tripod
Top,
Top, Small Base
Top, Small Base
Small Base "3" ... Tripod Top, Tripod Base
"3" ... Tripod Top, Tripod Base
19.5 620 57 657
(vertical mointing only)
(vertical mointing only) (underhung)
(underhung)
Step 3: Hardware
AREAS AFFEATED
BY LASTEST EC
Y N
S.P.C. __ __
F.A.I. __ __
TOOL/EQUIP __ __
SUPPLIER __ __
GAUGES __ __
PRCS PROC __ __
PKG/LABEL __ __
AREAS AFFEATED INSP/TEST __ __
BY LASTEST EC
Y N
S.P.C. __ __
F.A.I. __ __
TOOL/EQUIP __ __
SUPPLIER __ __
GAUGES __ __
PRCS PROC __ __
PKG/LABEL __ __
INSP/TEST __ __
• 3010: • 3012:
Same as 3001 except Same as 3002 except
arrester packaged in arrester packaged in
wooden crate wooden crate
301XXX-3011
301XXX-3011
*For additional hardware options or non-standard configurations, please contact your Hubbell
Power Systems Representative at 1.573.682.5521.
www.hubbell.com/hubbellpowersystems | 30-13
30 - ARRESTERS - PRODUCTS
Construction:
• Optimized wrap pattern and end hardware
Sealing Cap
• Even more effective sealing system
• Aluminum Top Cap ESP™ Rubber Housing
• Tri-pod base (standard 7.88 (200) to 10 (254)
inches (mm) bolt circle slotted Silicone Dielecric
Compound
At-a-Glance:
• The latest in surge arrester technology MOV Block
• Utilizes proprietary ESP™ weathershed material
• More robust sealing system reduces moisture ingress Contact Disc
Cross-Section View of
Typical EVP Arrester
Secondary Gasket
Radial Seal End Cap
Main Gasket
RTV Sealant
Polymer Housing
30-14 | www.hubbell.com/hubbellpowersystems
30 - ARRESTERS - PRODUCTS
Maximum Steep
Temporary
Duty Cycle Current Impulse Maximum Switching Impulse Maximum Lightning Impulse
Base Arrester Catalog MCOV Overvoltage
Rating Residual Voltage Residual Voltage (kV) Residual Voltage (kV)
Number (kV) Capability (kV)
(kV) (kV)
1s 10s 10kA 0.5kA 1kA 2kA 1.5kA 3kA 5kA 10kA 20kA 40kA
EVP000300 3 2.55 3.62 3.47 10.6 6.09 6.32 6.6 6.53 6.89 7.23 7.74 8.47 9.46
EVP000500 6 5.1 7.25 6.94 18.6 12.2 12.7 13.2 13.1 13.8 14.5 15.5 16.9 18.9
EVP000800 9 7.65 10.9 10.4 27.2 18.3 18.9 19.8 19.6 20.7 21.7 23.2 25.4 28.4
EVP000900 10 8.4 11.9 11.4 29.5 20.1 20.8 21.8 21.5 22.7 23.8 25.5 27.9 31.2
EVP001000 12 10.2 14.5 13.9 35.2 24.4 25.3 26.5 26.2 27.6 28.9 30.9 33.9 37.8
EVP001300 15 12.7 18 17.3 43.6 30.4 31.5 32.9 32.6 34.3 36 38.5 42.2 47.1
EVP001500 18 15.3 21.7 20.8 51.8 36.6 37.9 39.7 39.2 41.4 43.4 46.4 50.8 56.8
EVP001700 21 17 24.2 23.1 58.1 40.6 42.2 44.1 43.6 46 48.2 51.6 56.5 63.1
EVP001900 24 19.5 27.7 26.5 66 46.6 48.4 50.6 50 52.7 55.3 59.2 64.8 72.4
EVP002100 25 21 29.8 28.6 70.8 50.2 52.1 54.5 53.8 56.8 59.5 63.7 69.8 77.9
EVP002200 27 22 31.3 29.9 74 52.6 54.6 57.1 56.4 59.5 62.3 66.7 73.1 81.6
EVP002400 30 24.4 34.7 33.2 81.6 58.3 60.6 63.3 62.6 66 69.1 74 81.1 90.5
EVP002700 33 27 38.4 36.7 90.7 64.6 67.1 70 69.2 73 76.5 81.9 89.7 100
EVP002900 36 29 41.4 39.6 97.5 69.6 72.3 75.6 74.7 78.7 82.5 88.4 96.8 108
EVP003100 39 31.5 44.8 42.9 105 75.4 78.3 81.9 80.9 85.3 89.4 95.7 105 117
EVP003600 45 36.5 51.9 49.6 122 87.3 90.6 94.7 93.6 98.7 103 111 121 135
EVP003900 48 39 55.4 53 130 93.2 96.8 101 100 105 111 118 130 145
EVP004200 54 42 62.5 59.8 145 105 109 114 113 119 125 133 146 163
EVP004800 60 48 69 66 161 116 120 126 124 131 138 147 161 180
EVP005300 66 53 75.9 72.6 176 128 133 139 137 144 151 162 177 198
EVP005700 72 57 82.8 79.3 193 139 145 151 149 158 165 177 194 216
EVP007000 90 70 104 99.3 243 175 181 189 187 197 207 221 243 271
EVP007400 90 74 105 101 246 177 184 192 190 200 210 225 246 275
EVP007600 96 76 111 106 259 186 194 202 200 211 221 237 259 289
EVP007800 96 78 111 106 259 186 194 202 200 211 221 237 259 289
EVP008400 108 84 125 120 290 210 218 228 226 238 249 267 292 327
EVP008800 108 88 125 120 290 210 218 228 226 238 249 267 292 327
EVP009800 120 98 139 133 324 234 243 254 251 265 278 297 326 364
EVP010600 132 106 152 145 352 255 265 277 274 289 303 324 355 396
EVP011500 144 115 166 159 384 279 289 302 299 315 330 354 387 433
EVP013100 168 131 194 185 449 326 338 353 349 368 386 413 452 505
EVP014000 172 140 199 191 465 335 348 363 359 379 397 425 465 520
EVP014400 180 144 207 198 482 348 361 378 373 394 413 442 484 540
EVP015200 192 152 221 211 513 372 386 403 398 420 440 471 516 577
EVP015400 192 154 221 211 513 372 386 403 398 420 440 471 516 577
EVP018000 228 180 262 251 608 441 458 479 473 499 523 560 613 685
EVP019000 240 190 276 264 639 465 482 504 498 526 551 590 646 721
www.hubbell.com/hubbellpowersystems | 30-15
30 - ARRESTERS - PRODUCTS
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30 - ARRESTERS - PRODUCTS
A
DROP
B
DIAMETER
7.0 (178)
DIAMETER
HEIGHT
1.25(32)
NAMEPLATE
www.hubbell.com/hubbellpowersystems | 30-17
30 - ARRESTERS - PRODUCTS
Step 1: Configuration
"2" ... Tripod Top, Small Base "3" ... Tripod Top, Tripod Base
"0" ... Small Top, Tripod Base
"0" ... Small Top, Tripod Base "2""1"
... ...
Tripod
SmallTop,
Top,Small "1" ... Small Top, Small Base "3" ... Tripod Top, Tripod Base
SmallBase
Base (underhung)
mointing only) (vertical mointing only)
(vertical(underhung)
AREAS AFFEATED
BY LASTEST EC
Y N
S.P.C. __ __
F.A.I. __ __
TOOL/EQUIP __ __
SUPPLIER __ __
AREAS AFFEATED GAUGES __ __
BY LASTEST EC PRCS PROC __ __
Y N PKG/LABEL __ __
S.P.C. __ __ __ __
INSP/TEST
F.A.I. __ __
TOOL/EQUIP __ __
SUPPLIER __ __
GAUGES __ __
S.P.C.
F.A.I.
Y N
__ __
__ __
Height Creep
10.2 010 76 076
AREAS AFFEATED TOOL/EQUIP __ __
BY LASTEST EC SUPPLIER __ __
Y N GAUGES __ __
S.P.C. __ __ PRCS PROC __ __
F.A.I. __ __ PKG/LABEL __ __
003 - 008 - 013 - 017 - 029 - 036 - 070 - 098 - 140 - 180 -
TOOL/EQUIP __ __ INSP/TEST __ __
SUPPLIER __ __
GAUGES __ __
PRCS PROC __ __
PKG/LABEL __ __
(in) (in)
INSP/TEST __ __
005 010 015 024 031 042 048 057 088 106 115 131 152 190
12.7 013 84 084
15.3 015 88 088 0 - - - - - - - - - - - - - 9.9 19.6
1 0 - - - - - - - - - - - - 11.7 24.8
17 017 98 098
2 1 0 - - - - - - - - - - - 13.5 30
19.5 019 106 106
- 2 1 0 - - - - - - - - - - 17.2 40.5
22 022 115 115 - - 2 1 0 - - - - - - - - - 20.9 50.9
24.4 024 131 131 - - - 2 1 0 - - - - - - - - 24.5 61.5
29 029 140 140 - - - - 2 1 0 - - - - - - - 28.2 71.9
31.5 031 144 144 - - - - - 2 1 0 - - - - - - 31.9 82.4
- - - - - - 2 1 0 - - - - - 46.3 123
36.5 036 152 152
- - - - - - - 2 1 0 - - - - 53.7 144
39 039 180 180 - - - - - - - - 2 1 0 - - - 61 165
42 042 190 190 - - - - - - - - - 2 1 0 - - 72.5 184
- - - - - - - - - - 2 1 0 - 83.5 216
- - - - - - - - - - - 2 1 0 94.5 247
- - - - - - - - - - - - 2 1 111.1 288
- - - - - - - - - - - - - 2 127.7 330
* For applications that require leakage distance, height or terminal size requirements not listed, please
contact your Hubbell Power Systems Representative at 1.573.682.5521.
30-18 | www.hubbell.com/hubbellpowersystems
30 - ARRESTERS - PRODUCTS
1.50
(38)
www.hubbell.com/hubbellpowersystems | 30-19
30 - ARRESTERS - PRODUCTS
Construction:
• “Tube” design, using fiberglass reinforced
epoxy tube overmolded with silicone rubber
weathershed housing
• Single column of MOV discs and aluminum
spacers (as required) centrally located within
housing
• Disc column held under high spring compression
between ductile iron end fittings affixed to housing
• Directional pressure relief system built integrated
into end fittings
At-a-Glance:
• High leakage distance designs (standard designs at
least 28% more leakage distance than IEEE C62.11
minimum); higher leakage distance designs available
for high pollution areas
• Up to 47% lighter than comparable
porcelain arresters
• Resilient polymer housing resistant to
mechanical damage
• Tested to 63kA rated short circuit current; can
handle reclosures with no concern for housing
fragmentation
30-20 | www.hubbell.com/hubbellpowersystems
30 - ARRESTERS - PRODUCTS
www.hubbell.com/hubbellpowersystems | 30-21
30 - ARRESTERS - PRODUCTS
30-22 | www.hubbell.com/hubbellpowersystems
30 - ARRESTERS - PRODUCTS
A (DROP)
B (DIA)
HEIGHT
11.4 (DIA)
www.hubbell.com/hubbellpowersystems | 30-23
30 - ARRESTERS - PRODUCTS
S V N 0 5 4 G A 0 4 2 A A
MCOV
Leakage
010 070 084 106 131 152 175 209 Height
Distance
- - - - - - - 190 - 230 245 318 335 353 (in)
(in)
057 076 098 115 144 161 180 220
A 38.1 83.9
B A 44.4 113
C B A 52.1 143
D C B A 58.8 172
D C B A 76.8 197
D C B A 83.1 227
Letter Code
D C B A 90.8 256
D C B A 98.5 285
D C B A 105 315
D C B A 112 344
D C B A 130 369
D C B 137 398
C 145 248
A 152 457
B A 162 487
C B A 169 516
C B 184 541
C 195 570
* For applications that require leakage distance, height or terminal size requirements not listed, please contact your Hubbell PowerSystems
Representative at 1.573.682.5521.
30-24 | www.hubbell.com/hubbellpowersystems
30 - ARRESTERS - PRODUCTS
www.hubbell.com/hubbellpowersystems | 30-25
30 - ARRESTERS - PRODUCTS
30-26 | www.hubbell.com/hubbellpowersystems
30 - ARRESTERS - PRODUCTS
www.hubbell.com/hubbellpowersystems | 30-27
30 - ARRESTERS - PRODUCTS
30-28 | www.hubbell.com/hubbellpowersystems
30 - ARRESTERS - PRODUCTS
www.hubbell.com/hubbellpowersystems | 30-29
30 - ARRESTERS - PRODUCTS
300 216-228 M 256 (6500) 90.8 (2307) 1065 772 548 3 15.0 (381) 25.2 (640)
300 240 M 285 (7240) 98.5 (2503) 1170 848 602 3 15.0 (381) 25.2 (640)
300 258-264 M 315 (7990) 105 (2673) 1275 924 656 3 15.0 (381) 25.2 (640)
300 216 H 315 (7990) 105 (2673) 1275 924 656 3 18.0 (457) 39.0 (990)
300 228-264 H 315 (7990) 105 (2673) 1275 924 656 3 15.0 (381) 25.2 (640)
300 216 V 369 (9380) 130 (3291) 1545 1120 795 4 18.0 (457) 39.0 (990)
300 228-264 V 369 (9380) 130 (3291) 1545 1120 795 4 15.0 (381) 25.2 (640)
362 258-276 M 315 (7990) 105 (2673) 1275 924 656 3 18.0 (457) 39.0 (990)
362 288 M 344 (8740) 112 (2843) 1380 1000 710 3 18.0 (457) 39.0 (990)
362 258-288 H 369 (9380) 130 (3291) 1545 1120 795 4 18.0 (457) 39.0 (990)
362 258-288 V 457 (11610) 152 (3853) 1860 1348 957 4 18.0 (457) 39.0 (990)
420 330 M 369 (9380) 130 (3291) 1545 1120 795 4 35.7 (908) 60.2 (1530)
420 336 M 398 (10120) 137 (3487) 1650 1196 849 4 35.7 (908) 60.2 (1530)
420 360-378 M 428 (10860) 145 (3683) 1755 1272 903 4 18.0 (457) 39.0 (990)
420 390-396 M 457 (11610) 152 (3853) 1860 1348 957 4 18.0 (457) 39.0 (990)
420 420 M 487 (12360) 162 (4123) 1965 1424 1011 4 18.0 (457) 39.0 (990)
420 330-336 H 428 (10860) 145 (3683) 1755 1272 903 4 35.7 (908) 60.2 (1530)
420 360-378 H 428 (10860) 145 (3683) 1755 1272 903 4 18.0 (457) 39.0 (990)
420 390-396 H 457 (11610) 152 (3853) 1860 1348 957 4 18.0 (457) 39.0 (990)
420 420 H 487 (12360) 162 (4123) 1965 1424 1011 4 18.0 (457) 39.0 (990)
420 330-420 V 516 (13110) 169 (4293) 2070 1500 1065 4 18.0 (457) 39.0 (990)
* M = Medium, H = Heavy, V = Very Heavy
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A (DROP)
B (DIA)
HEIGHT
11.4 (DIA)
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P H 3 1 4 5 G V 1 2 0 A A
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The SVNX arresters are lightweight and are more resistant to fragmenting than traditional porcelain arresters.
SVNX arresters are typically applied to system voltages higher than 500 kV where the energy requirements are
higher than required for lower voltage systems.
Maximum Maximum
Temporary
Duty steep current switching
Standard overvoltage Maximum lightning
Cycle MCOV impulse impulse
Arrester Catalog capability impulse residual voltage (kV)
Rating (kV) residual residual
Number (kVrms)
(kV) voltage (kV) voltage (kV)
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30 - ARRESTERS - PRODUCTS
These arresters are typically applied to system voltages higher than 500 kV where the energy requirements are
higher than required for lower voltage systems. If a high energy rated arrester is required for a lower system
voltage, Hubbell Power Systems can provide these. Please contact your Hubbell Power Systems Representative at
1.573.682.5521 for more information.
SVNX420GA335AA 420 335 469 (11913) 176 (4470) 71.0 (1803) 81.0 (2057) 1285 (584) 4
SVNX444GA353AA 444 353 469 (11913) 176 (4470) 75.0 (1905) 85.0 (2159) 1294 (588) 4
SVNX588GA470AA 588 470 736 (18694) 259 (6579) 100 (2540) 114 (2896) 1847 (840) 5
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16 (DIA)
A (DROP)
B (DIA)
HEIGHT
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S V N H 3 9 6 G A 3 1 8 A A
MCOV
Leakage
115 144 190 230 335 Height
Distance
- - - - 318 - 470 (in)
(in)
131 152 220 245 353
A 68.9 184
B A 78.8 225
C B A 112 285
Letter Code
C B A 122 326
C B 132 368
C 142 408
A 152 449
B A 176 469
C B 186 511
C 196 552
A 259 736
B 269 777
C 279 817
* For applications that require leakage, height or terminal size requirements not listed, please contact your Hubbell Power Systems Representative
at 1.573.682.5521.
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www.hubbell.com/hubbellpowersystems | 30-37
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16 (DIA)
A (DROP)
B (DIA)
HEIGHT
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S V N R 3 9 6 G A 3 1 8 A A
MCOV
Leakage
Height
115 144 180 230 476 Distance
(in)
- - - - 318 335 353 372 - (in)
140 152 220 245 485
A 68.9 184
Letter Code
B A 78.8 225
C B A 112 285
C B A 122 326
C B A 152 449
C B A 186 511
C B A 196 552
C B A 215 633
C B A 299 898
* For applications that require leakage, height or terminal size requirements not listed, please contact your Hubbell Power Systems Representative
at 1.573.682.5521.
www.hubbell.com/hubbellpowersystems | 30-39
Porcelain Housed
Surge Arresters
30 - ARRESTERS - PRODUCTS
At-a-Glance:
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30 - ARRESTERS - PRODUCTS
VL Electrical Characteristics
Maximum Steep Maximum
Temporary
Current Impulse Switching Maximum Lightning Impulse
Standard Duty Cycle Overvoltage
MCOV Residual Impulse Residual Residual Voltage (kV)
Arrester Rating Ur Capability (kVrms)
(kV) Voltage (kV) Voltage (kV)
Catalog Number (kV)
1s 10s 10kA 0.5kA 1kA 1.5kA 3kA 5kA 10kA 20kA 40kA
VLN003GA003AA 3 2.55 3.8 3.6 9.0 7.0 7.0 6.8 7.1 7.5 8.0 8.8 9.8
VLN006GA005AA 6 5.1 7.5 7.2 18.0 13.0 14.0 13.5 14.3 14.9 16.0 17.5 19.6
VLN009GA008AA 9 7.65 11.3 10.8 26.0 19.0 20.0 20.3 21.4 22.4 24.0 26.3 29.4
VLN010GA009AA 10 8.4 12.4 11.9 28.0 21.0 22.0 22.0 23.2 24.3 26.0 28.5 31.8
VLN012GA010AA 12 10.2 15 14.4 34.0 25.0 26.0 26.2 27.6 29.0 31.0 33.9 37.9
VLN015GA013AA 15 12.7 18.7 18.0 42.0 31.0 32.0 33.0 34.7 36.4 39.0 42.7 47.7
VLN018GA015AA 18 15.3 22.5 21.6 50.5 38.0 39.0 39.7 41.9 43.9 47.0 51.5 57.5
VLN021GA017AA 21 17 25.0 24.1 55.5 41.0 43.0 43.5 45.9 48.1 51.5 56.4 63.0
VLN024GA019AA 24 19.5 28.7 27.6 63.5 47.0 49.0 49.9 52.6 55.1 59.0 64.6 72.2
VLN027GA022AA 27 22 32.4 31.1 71.5 52.5 54.5 56.2 59.3 62.1 66.5 72.8 81.3
VLN030GA024AA 30 24.4 35.9 34.5 79.5 58.5 61.0 62.5 65.9 69.1 74.0 81.0 90.5
VLN036GA029AA 36 29 42.7 41.0 94.5 69.5 72.0 74.4 78.4 82.2 88.0 96.4 107.6
VLN039GA031AA 39 31.5 46.3 44.6 103 75.5 78.5 80.7 85.1 89.2 95.5 104.6 116.8
VLN045GA036AA 45 36.5 53.7 51.6 120 87.5 91.0 93.8 98.9 103.7 111.0 121.5 135.8
VLN048GA039AA 48 39 57.4 55.2 127 93.0 97.0 99.7 105.1 110.2 118.0 129.2 144.3
VL Physical Characteristics
Power
Lightning Switching
Frequency
Standard Arrester Catalog Duty Cycle Creepage Distance - Total Height - Withstand Withstand Net Weight - Pounds
MCOV (kV) Withstand
Number Rating, Ur (kV) Inches (mm) Inches (mm) Voltage Voltage (kg)
Voltage
kV kV kVrms
VLN003GA003AA 3 2.55 6.2 (157) 19.1 (486) 95 76 30 75.6 (34.3)
VLN006GA005AA 6 5.1 6.2 (157) 19.1 (486) 95 76 30 76.9 (34.9)
VLN009GA008AA 9 7.65 6.2 (157) 19.1 (486) 95 76 30 77.3 (35.1)
VLN010GA009AA 10 8.4 6.2 (157) 19.1 (486) 95 76 30 77.6 (35.2)
VLN012GA010AA 12 10.2 11.1 (282) 21.1 (537) 110 88 45 83.7 (38.0)
VLN015GA013AA 15 12.7 11.1 (282) 21.1 (537) 110 88 45 84.2 (38.2)
VLN018GA015AA 18 15.3 20.0 (508) 24.1 (613) 150 120 60 91.1 (41.3)
VLN021GA017AA 21 17 20.0 (508) 24.1 (613) 150 120 60 91.5 (41.5)
VLN024GA019AA 24 19.5 20.0 (508) 24.1 (613) 150 120 60 92.4 (41.9)
VLN027GA022AA 27 22 31.7 (805) 28.1 (715) 200 160 80 102 (46.3)
VLN030GA024AA 30 24.4 31.7 (805) 28.1 (715) 200 160 80 102 (46.6)
VLN036GA029AA 36 29 31.7 (805) 28.1 (715) 200 160 80 104 (47.2)
VLN039GA031AA 39 31.5 41.0 (1041) 31.9 (810) 250 200 100 114 (51.8)
VLN045GA036AA 45 36.5 41.0 (1041) 31.9 (810) 250 200 100 116 (52.7)
VLN048GA039AA 48 39 41.0 (1041) 31.9 (810) 250 200 100 116 (52.9)
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30 - ARRESTERS - PRODUCTS
Height
0.8 (19
Arrester
Nameplate
• AA
Line: 4-Hole NEMA pad with (2) single eye bolts
Ground: Single eye bolt
For applications that require higher creepage distance, different terminal requirements or any
other non standard requests, please contact your Hubbell Power Systems representative for
additional assistance.
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30 - ARRESTERS - PRODUCTS
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30 - ARRESTERS - PRODUCTS
Maximum
Temporary steep Maximum
Duty overvoltage current Maximum lightning impulse residual
Standard switching
Cycle MCOV capability impulse voltage (kV)
Arrester Catalog impulse
Rating (kV) (kVrms) residual
Number residual
(kV) voltage (kV) voltage (kV)
* Discharge voltages are based on a 500A surge of 45 μs time to crest through 88 kV MCOV and 1,000A surge of 45 μs time
through 190 kV MCOV and 2,000A through 353 kV MCOV.
www.hubbell.com/hubbellpowersystems | 30-45
30 - ARRESTERS - PRODUCTS
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A (DROP) AA (Drop)
(DROP)
A (DROP) A (DROP)
B (DIA) B (DIA)
B
B (DIA) B (DIA)
(Dia)
12.012.0 DIA
(DIA) 12.0 12.0 DIA
(DIA)
12 (Dia)
HeightHEIGHT
Height
HEIGHT Height
Figure 11
Figure Figure
Figure 1 Figure
Figure 22
1Figure Figure
Figure 33
2 Figure
2 Figure
Figure 3 Figure
3 Figure 4 4Figure
Figure 4 4 Figure 5 5
Figure Figure
Figure 5 5
Figure 1 Figure 2 Figure 3 Figure 4 Figure 5
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30 - ARRESTERS - PRODUCTS
M V N 0 5 4 G A 0 4 2 A A
Step 3: Leakage
Distance Requirement
A – Standard Leakage Distance
B – High Leakage Distance
C – Extra High Leakage Distance
D – Mega High Leakage Distance
MCOV
Leakage
Height
10.2 042 070 084 106 131 144 180 209 220 Distance
- - - - - - - - - - 245 318 335 353 (in)
31.5 057 076 098 115 140 152 190 212 230 (in)
A 31.7 43.9
B A 38.1 75
C B A 44.1 100
D C B A 50.6 126
D C B A 57.1 153
D C B A 76.6 175
D C B A 82.6 200
D C B 89.1 226
D C A 95.6 253
Letter Code
D B A 102 279
C B A 109 305
D C B A 128 326
D C B 134 353 * For applications that require
leakage, height or terminal
D C 141 379 size requirements not listed,
A 154 431 please contact your Hubbell
Power Systems Representative at
B A 160 458 1.573.682.5521.
B A 179 479
B 186 505
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30 - ARRESTERS - PRODUCTS
www.hubbell.com/hubbellpowersystems | 30-49
30 - ARRESTERS - PRODUCTS
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30 - ARRESTERS - PRODUCTS
Temporary
Max steep current impulse Maximum switching impulse Maximum lightning impulse residual voltage
overvoltage
Base Arrester Catalog Um Ur Uc residual voltage (kV) residual voltage (kV) (kV)
capability (kVrms)
Number (kV) (kV) (kV)
www.hubbell.com/hubbellpowersystems | 30-51
30 - ARRESTERS - PRODUCTS
Temporary
Max steep current impulse Maximum switching impulse Maximum lightning impulse residual voltage
overvoltage
Base Arrester Catalog Um Ur Uc residual voltage (kV) residual voltage (kV) (kV)
capability (kVrms)
Number (kV) (kV) (kV)
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30 - ARRESTERS - PRODUCTS
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30 - ARRESTERS - PRODUCTS
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30 - ARRESTERS - PRODUCTS
A (DROP) AA(Drop)
(DROP)
A (DROP) A (DROP)
B (DIA) BB (Dia)
(DIA)
B (DIA) B (DIA)
12.012.0 DIA
(DIA) 12.0
12 12.0 DIA
(DIA)
(Dia)
Height
HeightHEIGHT
HEIGHT Height
Figure 11
Figure Figure
Figure 1 Figure
Figure 22
1Figure Figure
Figure 33
2 Figure
2 Figure
Figure 3 Figure
3 Figure 4 4Figure
Figure 4 4 Figure 5 5
Figure Figure
Figure 5 5
Figure 1 Figure 2 Figure 3 Figure 4 Figure 5
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30 - ARRESTERS - PRODUCTS
M H 4 3 6 2 G M 2 7 6 A A
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30 - ARRESTERS
PVI-LP 8.75 (222) - 10.0 (254) 0.5 (12.7) 1.25 (32) 0.56 (14) slotted
EVP 7.88 (200) - 10.0 (254) 0.5 (12.7) 1.25 (32) 0.56 (14) slotted
SVNH, SVNR, SVNX 16.5 (419) 0.75 (19) 0.88 (22) 0.81 (21) x 1.11 (28) slotted
Mounting holes will accommodate 1/2 or 3/4 inch bolts. Rated cantilever strength is achieved with the use of 1/2 or
3/4 inch bolts. Mounting bolts, nuts, and washers are not furnished with arresters.
Horizontal Mounting of Arresters – Many Hubbell Power Systems substation arresters can be mounted
horizontally. The first consideration is the cantilever force at the mounting point not exceed the cataloged rated
working cantilever load of the arrester under consideration. This force is a calculation of the total weight of the
arrester multiplied by 50% of the total height of the arrester.
Other considerations such as how much residual strength is available for large conductor loading, ice loading
and wind loading require a more detailed analysis. In these cases please contact your Hubbell Power Systems
Representative at 1.573.682.5521 for technical assistance.
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30 - ARRESTERS
Nameplates
• Each arrester is identified with an arrester nameplate attached to its bottom casting.
• Arrester nameplates display the MCOV (Uc), duty cycle rating (Ur) pressure relief current, serial and catalog
numbers as required by IEEE or IEC standards.
• On multiple-unit stacks, the plate is attached to the bottom unit. It features all of the same information as well as
the stacking sequence.
• Multiple-unit arresters must be stacked in the order listed on the base nameplate. The stacking sequence is also
listed on the arrester crates for easy reference.
• Additionally, multiple-unit stacks feature a unit nameplate on the upper casting of each unit. This identifies the
serial number of the specific unit.
Hollow Core
Solid Core
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30 - ARRESTERS
Catalog Information
Part Number Description
245171 Surge Counter with Total Leakage Current Measurement (30 mA)
245176 Surge Counter with Total Leakage Current Measurement w/ Auxiliary Connection
Surge Counter
Product Details
Minimum Count Current 200 Amp (8/20 μs)
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30 - ARRESTERS
Note: Insulating base assembly kit does not include arrester casting.
Images are for reference only.
1/2-13 STUD,
FLAT WASHER,
LOCK WASHER 1/2-13 STUD,
& HEX NUT FLAT WASHER,
LOCK WASHER
& HEX NUT
2.2 (56)
6.0 (152)
3.9 (98) 2.6 (67)
2.0 (51)
1/2-13 STUD, NUT &
1.2 (30) LOCK WASHER
2.3 (57)
1/2-13 STUD, NUT & 3.0 (76)
LOCK WASHER
4.9 (124)
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30 - ARRESTERS
Hardware
Line and Ground Terminals - All Hubbell arresters include as standard line and ground terminals for conductors
from 0.25 (7) to 0.81 (21) inch (mm) diameters. These are made from hot-dipped galvanized (HDG) malleable iron,
compatible with either aluminum or copper.
To obtain a full replacement hardware kit for an EVP arrester with standard hardware, specify part number
PSCPTERMKIT01.
.56 - 4 HOLES
.56
The arrangement of mounting terminals on arresters makes it possible to- 4align
HOLESthem
1.75 in any direction to
1.75
accommodate the angle of the incoming lead wire. .19 .19
If -your
.56 conductor size exceeds standard terminal capacity, contact your Hubbell Power Systems Representative at
4 HOLES 1.75 1.75
1.573.682.5521 for an1.75
appropriate quote. 3.3 3.3
1.38 .62 .62
.19 3.12
OLES
HDG Terminal Assy, HDGHDG
4-HOLE TERMINAL
4-HOLE PAD,PAD,
TERMINAL PARTPARTNo. 274914-4002
No. 274914-4002HD
1.75No. M271414-3001
Part 1.38
1.38 1.06
1.06
3.3 1.75 SUI
.19 .62 3.12
3.12 .25
Suitable for Cu or AI conductor
size 0.25 (7) to 0.81 (21) inch (mm) 1/2-13 UNC-2A THREAD
1/2-13 UNC-2A THREAD
diameter. (AWG#4 – 500 MCM) 1.06
3.3 1.75
.62
HDG 4-HOLE TERMINAL PAD, PART No. 274914-4002 HDG TERMINAL ASSY, PART No.
1/2-13 UNC-2A THREAD
SUITABLE FOR Cu OR Al CONDU
HDG Terminal Bracket Assy, .25 -2.875
.81 DIA (AWG#4 - 500 MCM)
-HOLE TERMINAL PAD, PART No. 274914-4002
Part No. M71874-3001 HDG TERMINAL ASSY,
2.875 2.875
PART No. M271414-3002.19
2.19 2.19
Engineering Note: Maximum recommended tightening torque to be applied to the end stud when installing terminals and leads is 40 ft-lbs (54 Nm).
www.hubbell.com/hubbellpowersystems | 30-61
2.875 2.875
30 - ARRESTERS
Hardware
Suspension cap with clamp type terminal
3.2 (.13)
44 (1.75) 13 (.5)
44 (1.75)
143 (5.63)
14 (.56)
3.2 (.13)
44 (1.75) 4.8 (.19)
84 (3.3)
16 (.63)
44 (1.75)
16 (.62)
44 (1.75)
44 (1.75)
3.2 (.13)
4.8 (.19)
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30 - ARRESTERS
Discharge Voltage: Determined by the sum of the resistor elements, each arrester is tested to be within a
manufacturer specified range that aligns with the arrester’s published ratings.
Partial Discharge (PD): Power-frequency voltage is raised to the duty cycle voltage rating of the arrester or unit,
held for not less than 2s, and then lowered to 1.05 times the MCOV of the arrester or unit. The measured PD shall
not exceed 10 pC.
Seal Test: The helium-mass spectrometer test is performed on arresters with >10% internal gas volume to verify
the environmental seal of the arrester or unit.
Power Frequency (PF): A minimum voltage of 1.20 times the MCOV of the arrester or unit is applied to verify that
the measured values of watts loss does not exceed the arrester or unit’s specified limits.
Reference Voltage: The voltage at which the arrester conducts the reference current per the table below. This test
verifies the proper MOV discs were used in the assembly.
PVI-LP 7 mA
SVNR 28.5 mA
SVNX 34 mA
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30 - ARRESTERS
Seismic Testing
IEEE 693 is the governing standard for seismic testing of substation equipment for IEEE C62.11 and IEC 60099-4
surge arresters. The IEEE 693 standard details test procedures for seismically validating a wide range of products
including arresters, switches, bushings, and a multitude of other equipment. Hubbell Power Systems qualifies the
seismic capability of its surge arresters to Annex K of IEEE 693.
All VL and PVI-LP arresters under 35 kV rated voltage are seismically qualified by inherently acceptable criteria. All
other Hubbell Power Systems arresters are qualified by shake table testing. To be qualified, a surge arrester must
survive the shake table test with no structural damage and remain functional, as demonstrated by successfully
passing routine production tests after shake table testing.
IEEE 693 allows seismic qualification based on the concept of “qualifying equipment by group”. This concept
permits products of different voltage ratings, but similar physical structure, to be combined into groups for
qualification purposes, with the most seismically vulnerable piece of equipment of each group being analyzed or
tested. All arresters which do not exceed the listed height, mass and center of gravity for these arresters is also
qualified to IEEE 693.
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30 - ARRESTERS
Arrester FAQs
1. What is the difference between a grading ring and a corona ring?
A grading ring is used to ensure a uniform voltage distribution along the length of an electrical device. This is
important for surge arresters so each MOV disc in the arrester is energized at the appropriate voltage.
A corona ring is traditionally used to electrically shield external hardware to prevent corona from developing. This
corona could lead to degradation of insulating materials or create interference to electronic communication.
Surge arresters below 500 kV system voltage do not typically need corona rings.
2. Why are the catalog phase to phase and phase to ground clearances less than spacing in other
industry codes such as the National Electric Code?
The clearances in this catalog are the minimum distances for which the uniform internal voltage distribution of the
arrester will not be compromised. It is not the intention of Hubbell Power Systems to overrule a specific customer
requirement. If a specific end user application dictates a larger clearance the standard Hubbell Power Systems will
function properly.
3 Why are the heights of the arrester less than the spacing mandated in other industry codes such as
the National Electric Code?
The arresters in this catalog are designed and tested in accordance with IEEE C62.11 which defines minimum
insulation withstand of station class arrester. It is not the intention of Hubbell Power Systems to overrule a specific
customer requirement. If a specific end user application dictates a larger spacing Hubbell Power Systems can
supply a special arrester with the required spacing.
7. Where is the terminal hardware that comes with the arresters located?
Suspension cap and terminal hardware items are shipped unattached to the arrester and will be contained in a
separate bag or box within the arrester crate. In the case of a multi-unit arrester the hardware will be in the crate
of the bottom unit.
Other considerations such as how much residual strength is available for large conductor loading, grading ring
loading, ice loading and wind loading require a more detailed analysis. In these cases please contact your Hubbell
Power Systems representative at 1.573.682.5521 for technical assistance.
When mounting the arrester in a non vertical or under-hung position, the orientation of the sheds must be
considered. If the sheds are inverted this can allow water to pool around the center of the arrester and decrease
the creepage distance. This can result in increased chance of flashover.
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30 - ARRESTERS
Arrester FAQs
8. What does MCOV rating of a surge arrester mean?
MCOV stands for the Maximum Continuous Operating Voltage. It represents the power frequency voltage that may
be continuously applied to a surge arrester.
The MCOV selected for a given system voltage is a function of the maximum line-to-line voltage as well as the
system grounding parameters. Hubbell Power Systems application engineers can assist with the proper MCOV
selection for your specific requirement.
9. What if I need a different arrester configuration than what is offered in the catalog.
Hubbell Power Systems can offer many customization options for arresters. Options include increased creepage
distances, increased height, different arrester MCOV’s, various terminal sizes, higher energy rating, and mounting
hardware. Contact your Hubbell Representative at 1.573.682.5521 for more information on arrester
customization options.
10. How does MCOV rating differ from Duty Cycle rating?
The Duty Cycle rating of a surge arrester is the power frequency voltage at which the arrester can successfully
withstand the duty cycle test per IEEE Standard C62.11. The Duty Cycle rating is a short-term TOV (Temporary
Over Voltage) rating.
11. What is the difference between a station class and an intermediate arrester?
Generally, station class arresters have the lowest protective characteristics and most durability, while intermediate
arresters perform at levels slightly less robust than station class arresters.
Both of these arresters have traditionally been used in sub-station applications. The arrester IEEE Standard C62.11
defines the performance levels of each of these designs.
12. Why is the system grounding type important to consider when selecting the MCOV rating?
The type of grounding determines the amount of neutral shift during a fault on the power system. The resulting
TOV on the arrester could cause damage unless the arrester is sized properly.
Your Hubbell Power Systems Representative can help with the selection of the proper size arrester for
your application.
13. How do I use the pressure relief rating value in making my arrester selection?
When a surge arrester fails, it will become shorted. It then will conduct the available short circuit current in
the substation.
To minimize the possibility of a catastrophic failure, you should select an arrester with a pressure relief rating that
is greater than the available short-circuit current in your substation.
14. What routine maintenance and testing does Hubbell Power Systems recommend for station class
surge arresters?
Hubbell Power Systems arresters are designed to provide years of successful service without any recommended
maintenance. Arresters do not require field testing; however, if testing must be performed we recommend that
Hubbell Power Systems be contacted prior to beginning a testing.
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30 - ARRESTERS
Engineering Terminology
BIL (Basic Insulation Level): The electrical strength of insulation in terms of the crest value of a standard lightning
impulse under standard atmospheric conditions.
Corona Ring: A metal ring used to electrically shield external hardware by preventing corona discharge effects
from developing. This will come with the arrester is required by design.
Crest Value: The maximum value that a wave, surge or impulse attains.
Design Tests: Tests made on each design to establish performance characteristics and to demonstrate compliance
with the appropriate standards of the industry. Once made, they need not be repeated unless the design is
changed so as to modify performance.
Discharge Counter: A device for recording the number of arrester discharge operations.
Discharge Voltage: The voltage that appears across the terminals of an arrester during passage of discharge
current. Sometimes referred to as IR.
Discharge Withstand Current: The specified magnitude and wave shape of a discharge current that can be applied
to an arrester a specified number of times without causing damage to it.
Duty Cycle Voltage: The designated maximum permissible voltage between its terminals at which an arrester is
designed to perform its duty cycle.
ESP Polymer: Proprietary ESP™ weathershed material, made of a blend of silicone and EPDM. ESP’s properties
have been confirmed in a series of performance tests that include tracking resistance, contamination, aging, and
seal design.
Fault Current: The current from the connected power system that flows in a short circuit.
Front-of-wave (FOW) Impulse Voltage: The resulting voltage from a current impulse with a wave front that rises
with a virtual front time of 1 μs. The current magnitude is equal to the lightning impulse classifying current.
Grading Ring: A metal ring mounted to electrostatically modify the voltage gradient or distribution. This will come
with the arrester if required by the design.
Ground Terminal: The conducting part provided for connecting the arrester to ground.
Impulse Protective Level: The discharge-voltage value for a defined wave shape.
Impulse Withstand Voltage: The crest value of an impulse that, under specified conditions, can be applied without
causing a disruptive discharge.
Line Terminal: The conducting part of an arrester provided for connecting the arrester to the circuit conductor.
Maximum Design Cantilever Load-Static (MDCL-Static): The maximum cantilever load the surge arrester is
designed to continuously carry.
MOV (Metal Oxide Varistor): The power semi-conductor that limits the surge voltage allowing the arrester to
perform its protection function. This is the electrically active component of the surge arrester.
MCOV (Maximum Continuous Operating Voltage): The maximum designated root-meansquare (rms) value of
power-frequency voltage that may be applied continuously between the terminals of the arrester.
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Partial Discharge (PD): A localized electric discharge resulting from ionization in an insulation system when the
voltage stress exceeds critical value. The discharge partially bridges the insulation between electrodes.
Qrs: Repetitive charge transfer rating given in Coulombs. Test performed on individual MOV blocks without thermal
recovery.
Qth: Thermal charge transfer rating given in Coulombs. Applicable for distribution arresters only.
Reference Current (Iref): The peak value of the resistive component of a power frequency current high enough to
make the effects of stray capacitance of the arrester negligible.
Reference Voltage (Vref): The lowest peak value independent of polarity of power frequency voltage, divided by
the square root of 2, required to produce a resistive component of current equal to the reference current of
the arrester.
Routine Tests: Tests made by the manufacturer on every device to verify that the product meets the
design specifications.
Surge Arrester: A protective device for limiting surge voltages on equipment by diverting surge current and
returning the device to its original status. It is capable of repeating these functions multiple times.
TOV (Temporary Over Voltage): A power frequency voltage in excess of normal line-to-ground voltage. A TOV is
typically system generated. The magnitude and duration are a function of the power system parameters.
Prior Duty TOV: The TOV of the arrester if it has been energized before an over voltage event.
No Prior Duty TOV: The TOV of the arrester if it has not been energized prior to an over voltage event.
Wth: Thermal energy rating of a station or intermediate arrester given in kJ/kV of Ur (IEC) or kJ/kV of
MCOV (IEEE)
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Notes
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Notes
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Notes
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Hubbell Power Systems, Inc. (HPS) manufactures a wide
variety of transmission, distribution, substation, OEM and
telecommunications products used by utilities.
GET IN TOUCH:
hpscs@hubbell.com
(573) 682-5521
www.hubbell.com/hubbellpowersystems