GE Consumer & Industrial - G E Power Controls
GE Consumer & Industrial - G E Power Controls
GE Consumer & Industrial - G E Power Controls
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4.3.6 Shunt trip control circuit<br />
Standard DC 24 V shunt trip with control PCB.<br />
-S2<br />
-X2<br />
[ 6 ]<br />
[ 7 ]<br />
-X13: ST PCB<br />
[ 3 ]<br />
[ 4 ]<br />
[ 5 ]<br />
-X10/11<br />
[ 9 ](+)<br />
24 V DC<br />
[ 8 ]<br />
-K1<br />
-K1 Closing<br />
STOP relay<br />
[ 6 ]<br />
[ 7 ] (-)<br />
[ 7 ]<br />
ST coil<br />
[ 10 ]<br />
[ 9 ]<br />
Cut-off<br />
contact<br />
-HS11<br />
[ 1 ]<br />
[ 2 ]<br />
36/ _ _ _ X _ _ _<br />
Key position - 5<br />
Key number - 00: Without shunt trip or zero voltage release.<br />
Key number - 10: With shunt trip.<br />
<br />
<br />
<br />
The closing STOP signal is provided for resetting K2 on the SU-control circuit. It effects with priority in switching<br />
OFF (by ST or UVR) before switching ON. Once switching ON and OFF signals are simultaneous, switching OFF<br />
command will stay longer than switching ON. It means, that OFF command is master command.<br />
The shunt trip operates for short time period only. After main contacts open, switch HS 11 cuts off shunt trip<br />
coil.<br />
Manual closing of the breaker, while –S2 contact is closed, leads to overheating of ST coil and will damage coil.<br />
Fig. 27a ST control circuit<br />
22 Design and specifications are subject to change without notice S47183R01E06 2012-11-21
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