since 1907
LOCKOUT RELAY
APPLICATION
The Locout Relay is a high speed auxillary relay permitting simultaneous operations of up to 48 contacts. It is a vital componet for
high voltage switchgear protection system. Lockout Relays are normally connected to the fault sensing contacts of the circuit break-
ers. If a fault should occur, the Lockout Relays will trip and lockout the circuit breaker, ensuring that all the critical circuits are isolated
and would remain isolated so long as the fault is not cleared. It’s positive Trip action ensures that all the contacts would perform as to
requirement and it’s multi-contact arrangement eliminates the need for several control relay contacts.
The Kraus & Naimer Lockout Relay offer high speed tripping by compressing the linear spring return mechanism of the relay. It can
be locally Reset manually, Remotely Reset or Self Reset by means of DC Rotary Solenoid. Once the handle is in the Reset position,
the handle is mechanically locked in place and cannot be manually turned back to Trip. When the Trip coil is energize, the Lockout
Relay will automatically spring return to the Trip position. The device contains a totally encapsulated coil to protect against environ-
mental, mechanical and thermal damage. Also an Interrupt contact is incorporated to open at trip position, prevent overheating of the
coil.
Type M : Manual Release
Type L : Automatic Release
Manual Reset
Manual Reset
TYPES OF LOCKOUT RELAY
The types of Lockout Relay available are: Type ER : Automatic Release Electrical /
Self Reset.
Type Trip Reset Additional Function
L Automatic TRIP Manual RESET -
M Automatic TRIP Manual RESET Manual TRIP test function
ER/SR Automatic TRIP Electrical / Self RESET
L N
TRIP RESET
a. No Fault Condition - Fig. 1
Fig. 1 • Handle at “TRIP” position
FC LR
D1
D2
No Fault Condition • LR contact open circuit because handle is at “TRIP” position
LR
No Fault Condition
• FC contact open circuit because there is no fault condition
L N
TRIP RESET
FC LR
b. No Fault Condition - Fig. 2
Fig. 2
• Handle turn to “RESET” position
D1
D2
LR
No Fault Condition
No Fault Condition
• LR contact close circuit because handle is at “TRIP” position
• FC contact open circuit because there is no fault condition
L N
TRIP RESET
FC LR
D1
LR
D2
Fig. 3 c. Fault Condition - Fig. 3
Fault Condition • FC contact close circuit to energise Lockout Relay coil LR via the
Fault Condition
Lockout Relay contact LR
TECHNICAL DATA
Switch Type
AC Rating According to IEC60947-3 CHR16 C26 A14
Rated Insulation Voltage : 690V 690V 690V
Rated Impulse Withstanding Voltage Uimp 6KV 6KV 6KV
Rated Thermal Current Iu/Ith 25A 32A 25A
Rated Short time withstand Current 250A 350A 220A
Operational Current
AC-21A/AC-22A 25A 32A 25A
AC-15 220 – 240V 8A 14A 8A
AC-15 380 – 440V 5A 6A 5A
DC Rating
Resistive Load T<=1ms (1 Contact / 2 contact connected in series)
24V, 25A/25A 32A /32A 16A/16A
48V, 20A/25A 32A;/32A 15A/16A
60V, 7.5A/20A 23A;/32A 5A /15A
110V, 1.5A/7.5A 6.5A/23A 1.2A/5A
220V 0.5A/1.5A 1.2A/6.5A 0.38A/1.2A
Inductive Load T=50ms
24V, 20A/20A 32A / 32A 16A/16A
48V, 3A /20A 16A;/32A 2.5A/16A
60V, 1.5A/9A 11A;/25A 1A / 7A
110V, 0.5A/1.5A 3.2A/ 11A 0.4A/1A
220V - /0.5A - / 3.2A - /0.4A
Termination 2X4mm2 2 X 6mm2 4mm2
Ambient Temperature 55ºduring 24hours operation, peak not more then at 60º,100% humility
Selection Of Switch Type
Type CHR16 2 contacts per stage Type C26 2 contacts per stage Type A14 4 contacts per stage
Accept Ring Terminal Accept Ring Terminal Accept Ring Terminal
Terminal Screw access Terminal cover available Terminal cover avail
from Side upon request able upon request
Finger Proof terminal High Electrical rating Max. 24NO+24NC for
Max. 12NO+12NC for Max. 12NO+12NC for Manual Reset
Manual Reset Manual Reset Max. 20No+20NC for
Max. 10No+10NC for Max. 10No+10NC for Electrical Reset
Electrical Reset Electrical Reset
Electromagnet Data :
Tripping Voltage Minimum - Umin=0,6xUn(>=20V)
Nominal Voltage -Un 24...600V -50/60Hz / 24 ...240VDC
Average Tripping Speed Opening of NO Contact Closing of NC Contact
- Type L and M (Manual Reset) 8.5 milli-seconds 14 milli-seconds
- Type ER/SR (Electrical /Self Reset) 10 milli-seconds 15 milli-seconds
Coil Specifications
- Voltage (V) 24-28V 48V 110V/125V 220/240V
- Resistance (ohm) 2.72 7.53 43.2 171.5
DC Rotary Solenoid (ER/SR)
- Operation Voltage 125VDC Nominal (83VDC...150VDC)
- Reset Speed 80milli-second @ 1.0 x Un
- Nominal Current 6.5A (50.6msec)
- Coil Burden 19.0 Ohm
To obtain maximum tripping speed, the Lockout Relay coils are rated for intermittent duty only. Continuous energisation of the coil may
result in overheating of the coil. Monitor current is allowed <100mA (Temperature raise 15K, Shunt resistor >1.2KOhm)
ORDERING INFORMATION
C26 M SGJ654 / A 110 ER 125
Switch Type
Type DC Motor Reset Voltage
• M - With manual reset • 125 - 125v
• L - Without manual reset
Contact Configuration
Number of NO+NC contacts Type Electrical Reset
• Blank - Manual Reset
Frequency • ER – Electrical Reset/Self Reset (5 holes mounting)
• A - 50hz/60hz/DC Coil Voltage * ERA - Electrical Reset/Self Reset ( 4 holes mounting)
• 024 - 24v to 28v • 038 - 32v to 40v
• 048 - 42v to 50v • 060 - 60v
• 110 - 110v to 125v • 220 - 220v to 240v
• 380 - 380v to 440v
CONNECTION
Short the terminal
for self reset
CONTACT CONFIGURATION
CONFIGURATION CODING NUMBER OF POLES
TYPE OF OPERATION SWITCH TYPE 4 6 8 10 12 14 16 18 20 22 24
CHR10 / C26 SGN004 SGN006 SGN008 SGN010 SGN012
MANUAL RESET
A14 SGN004 SGN006 SGN008 SGN010 SGN012 SGN014 SGN016 SGN018 SGN020 SGN022 SGN024
CHR10 / C26 SGN005 SGN007 SGN009 SGN011
ELECTRICAL RESET
A14 SGN005 SGN007 SGN009 SGN011 SGN013 SGN015 SGN017 SGN019 SGN021 SGN023
MANUAL RESET 4 POLES 6 POLES 8 POLES 10 POLES 12 POLES 14 POLES 16 POLES 18 POLES 20 POLES 22 POLES 24 POLES
1 35 79 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95
RESET
TRIP
---------------------------------------------------------------------------------------------------------------------------------------------------------
24 68 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96
ELECTRICAL RESET 4 POLES 6 POLES 8 POLES 10 POLES 12 POLES 14 POLES 16 POLES 18 POLES 20 POLES 22 POLES
ADDITIONAL INFORMATION DC Trip Bus DC Trip Bus
In selecting the coil voltage of the Lockout Relay, it is important to verify (+) (+)
if additional coils e.g. protective relay coils etc. would be Protective
connected in series with the Lockout Relay coil. In order to ensure that the Relay Coil
TS1
V2
Lockout Relay can trip should a fault occurs,
it is important:
• To adjust the setting of the protective relay T61 coil so that the D1 D1
Lockout Relay can trip when the coil is energise - refer to Fig. 5b. V1
• If the protective relay T61 coil is not adjustable, it is important that
the coil voltage of the Lockout Relay is properly selected to match Lockout
Relay
LR Lockout
Relay
LR
V1
with the series coil T61 so the Lockout Relay coil can trip when
energise. In such a case, the rated coil voltage of the 86 86
Lockout Relay should be lower that the DC bus voltage. D2 D2
It is important to ensure that the volatge V1 across the (-) (-)
Lockout Relay coil 86 should not be lower than the Pull-in voltage Connection without Series Coil Connection without Series Coil
as specified above.
Fig. 5a Lockout Relay Fig. 5b Lockout Relay
• The current flowing in the circuit is sufficient to energise and with series relay coil
without series relay coil
trip the Lockout Relay coil.
Switch Dimension & Mounting
Automatic Release Manual Reset
10.2 1-4
14.8
48
5
+ + 32
10-15
+ +
Switch Length L First 4NO+4NC Next 2NO+2NC
84
Type CHR16 107mm 28mm
Type C26 91mm 26mm
64 50 Type A14 66mm 13mm
Automatic & Manual Release Manual Reset
10.2 1-4
14.8
48
5
+ +
32
10-15
+ +
48
Switch Length L First 4NO+4NC Next 2NO+2NC
84
22 Type CHR16 107mm 28mm
Type C26 91mm 26mm
64 50 Type A14 66mm 13mm
Automatic & Manual Release Electrical Reset
106mm L
22mm 51
RESET 5
40mm
TRIP
55
10-15
ERA Mounting
90mm
48
5
90mm
10-15
ER Mounting
Kraus & Naimer Pte Ltd
115A Commonwealth Drive
Switch Length L First 4NO+4NC Next 2NO+2NC
#03-17/23 Singapore 149596
Tel: (65) 64738166 Fax: (65) 6473864 Type CHR10 227mm 28mm
E-mail: sgp@krausnaimer.com Type C26 210mm 26mm
Website: http://www.krausnaimer.com
Type A14 185mm* 13mm
*First 5NO+5NC
999 LOCKOUT RELAY-0412
