High Speed DC Circuit Breaker - G E Power Controls
High Speed DC Circuit Breaker - G E Power Controls
High Speed DC Circuit Breaker - G E Power Controls
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6.2.3 Layout of control PCB inside control box<br />
6.2.4 Replacement of the control boards<br />
Slot numbers:<br />
1 2 3 4 5 6<br />
• OPEN the breaker.<br />
• Disconnect power supply, and pull out all the plugs<br />
from control box’s terminals.<br />
• In case of NEKO control unit inside, wait 1 minute<br />
untill capacity will discharge.<br />
Fig. 53 Control box inside (w/o SEL unit)<br />
Slot Control board Z-No. Orientation<br />
1 - - -<br />
2 NEKO unit (ED trip) 128 750 R1 equipment to left<br />
3 Voltage converter 128 730 R2-R4 equipment to left<br />
4 SU-control unit 128 700 equipment to right<br />
5 - - -<br />
6 ST/UVR control unit 128 710 R1, R2 equipment to left<br />
Table 5 Layout of control PCBs inside the box w/o SEL<br />
Fig. 55-1 Unscrew and remove all the plugs<br />
Slot numbers:<br />
1 2 3 4 5 6<br />
Fig. 55-2 Unscrew four bolts of the box cover<br />
Fig. 54 Control box inside (with SEL unit)<br />
Slot Control board Z-No. Orientation<br />
1 NEKO unit (ED trip) 128 750 R1 equipment to right<br />
2 Voltage converter 128 730 R2-R4 equipment to right<br />
3 SU-control unit 128 700 equipment to left<br />
4 SU-control unit 128 700 equipment to right<br />
5 - - -<br />
6 SEL control unit 128 785 R1-R2 equipment to left<br />
Table 6 Layout of control PCBs inside the box with SEL<br />
Attention:<br />
• The isolation plates between the control boards and<br />
at the wall of the box have to be always present!<br />
• In older systems it may be the control boards are installed<br />
180° turned!<br />
Fig. 55-3 Carefully move down the box cover<br />
44 Design and specifications are subject to change without notice 01/2008
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