GE Industrial Solutions GERAPID 2607, 4207, 6007, 8007 with arc chutes 1X2, 1X4, 2X2, 2X3, 2X4 - Manual (Page 22)

22 Design and specifications are subject to change without notice S47183e rev.03 2010-06-07
4.3.6 Shunt trip control circuit
Standard DC 24 V shunt trip with control PCB.
• The closing STOP signal is provided for resetting K2 on the SU-control circuit. It effects with priority in switching
OFF (by ST or UVR) before switching ON. Once switching ON and OFF signals are simultaneous, switching OFF
command will stay longer than switching ON. It means, that OFF command is master command.
• The shunt trip operates for short time period only. After main contacts open, switch HS 11 cuts off shunt trip
coil.
• Manual closing of the breaker, while –S2 contact is closed, leads to overheating of ST coil and will damage coil.
Fig. 27a ST control circuit
Key position - 5
Key number - 00: Without shunt trip or zero voltage release.
Key number - 10: With shunt trip.
36/ _ _ _ X _ _ _
-X13: ST PCB
[ 4 ]
[ 3 ]
[ 5 ]
[ 6 ]
[ 8 ]
[ 7 ]
[ 10 ]
[ 9 ]
[ 1 ]
[ 2 ]
-X10/11
[ 7 ](-)
24 V DC
[ 9 ] (+)
-X2
[ 6 ]
[ 7 ]
-S2
Cut-off
contact
-HS11
ST coil
-K1
-K1
Closing
STOP relay