GE Industrial Solutions GERAPID 2508, 4008, 5008, 6008 WITH ARC CHUTE 1X2 - Manual (Page 58)

58 Design and specifications are subject to change without notice S47183De rev.02 2011-03-14
7.4 Troubleshooting
Breaker does not CLOSE.
A) Closing drive doesn't operate electrically but it is still
possible to close the breaker manually by mean of the
hand lever.
1) Check the supply voltage of the drive (-X2 :1/:2). The
voltage shall not be less than 80% of drive’s rated
voltage.
2) Check the supply voltage of the controls (-X3 :4/:5). The
voltage shall not be less than minimum input voltage
required for installed voltage converter
3) Calculate the voltage drop at both supply lines and check
for adequate wire size.
4) Check the polarity of the supply connections.
5) Check continuity of the control connections.
6) Check if the local Close-Stop Interlock Switch is in the
ENABLE position.
7) If a remote Close-Stop Interlock switch is being used,
check that it is in ENABLE position and verify continuity of
external wiring.
8) If remote Close-Stop Interlock is not used, terminals X3:
10& 11 must be jumped.
Open the control box:
WARNING ! Following operations are done with control
voltage connected. Only trained specialist or GE Service
representative shall perform them.
Risk of electric shock!
9) Check the status of the red LED diode on the SU PCB.
 Does not light – power supply failure;
 Weak light – system ready to CLOSE;
 Intensive red light – system not ready to CLOSE.
Closing STOP circuit is active, or NEKO PCB is not
charged, or “anti-pumping “ is active for 15 sec.
10) Check if the Closing STOP circuit is not open.
Measure voltage at SU PCB, (-X12 5:/:6). There shall be
~24 V DC available for actuation of “closing stop relay”.
If there is no 24 V DC, check continuity of closing STOP
circuit. Check relays at ST/UVR/NEKO PCBs, by
controlling state of contacts at points :5/:6 of each.
11) Replace any ST/UVR/NEKO if necessary.
12) Replace the SU control PCB.
13) Switch OFF the power at control box! Check continuity
and resistance of solenoid winding. Replace the
solenoid in case of winding breakage.
Contact GE Service in case the problem is not solved.
B) Closing drive operates electrically, but it is not possible
to keep contacts closed.
1) Check the forced tripping release (if installed). A
permanently blocked tripping device, during closing
operation, will cause closing failure and force contact
opening.
2) Check contact system area. Look for any parts that may
be stuck between contacts or into mechanism module.
3) If the zero voltage release is installed, check connection
of (–S2) pushbutton. If only NO type (-X2 :6/:7) is used, be
sure that (–X2 :8/:9) is shorted.
Open the control box (only when UVR is installed).
4) Check the wiring connections for UVR PCB.
5) Check supply of the UVR control PCB (-X13 :7/:8)
Contact GE Service in case the problem is not solved.
Breaker does not OPEN.
WARNING!
Below operations are done with control voltage
connected. Only trained specialist or GE Service
representative shall perform them.
Risk of electric shock!
A) Shunt trip does not operate. Breaker is able to CLOSE
and OPEN by means of hand lever.
1) Check points A2 to A5.
2) Check the self cut off contact HS11 (-X14 :1/:2).
3) Check the wiring connections and supply line of ST PCB (-
X14 :7/:8).
4) Check the continuity of shunt trip coil (-X14 :9/:10).
5) Replace the ST PCB or ST coil if necessary.
Contact GE Service in case of problem is not solved.
B) Zero voltage release does not operate. Breaker is able to
CLOSE and OPEN by means of hand lever.
1) Check points A2 to A5.
2) Check point B3 to B5.
3) Check the continuity of UVR’s coil (-X13 :9/:10).
4) Replace the UVR PCB or UVR coil if necessary.
Contact GE Service in case the problem is not solved.
C) ED impulse release does not operate. Breaker is able to
CLOSE and OPEN by means of hand lever.
1) Check points A2 to A5.
2) Check the wiring connections and supply line for NEKO
PCB (-X16 :1/:2).
3) Check the voltage level and timing of firing signal for
releasing the C-bank energy (-X16 :3/:4). Voltage signal
shall be between 6-24 V DC and duration of minimum
3 ms.
4) Check if the NEKO is signaling C-bank charging correctly
(-X16 :9/:10). Relay is closed when NEKO is ready to
operate.
5) Check the continuity of ED coil (-X16 :11/:12).
6) Replace the NEKO PCB if necessary.
Contact GE Service in case the problem is not solved.