Connect Signal Cables in Systems with Top Cable Entry
Overview of Signal Cable Connections
NOTE: The UOB must include two separated auxiliary switches.
NOTE: Kirk key control, HSSIB control, HMBB
control, and HUOB control refer
to ground and UOB AUX, MBB AUX, and SSIB AUX refer
to neutral.
 DANGER |
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hazard of electric shock, explosion, or arc flash
Do not drill/punch holes for cables or conduits with the
gland plates installed and do not drill/punch holes in close proximity
to the UPS system.
Failure to follow these instructions will result in death or serious injury.
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- Loosen the bolts and remove the gland plate in the top
of the maintenance bypass cabinet.
Front View of the Maintenance Bypass Cabinet
- Drill or cut holes for cables/conduits.
- Install conduits and reinstall the gland plate. DANGERhazard of electric shock, explosion, or arc flashEnsure that there are no sharp edges that can damage the cables.Failure to follow these instructions will result in death or serious injury.
- Remove the plate from the front of the breakers.
Front View of the Maintenance Bypass Cabinet
- Loosen the screws and slide out the three LEDs.
Front View of the Maintenance Bypass Cabinet
- Remove the communication box:
- Loosen the three screws from the side of the communication box.
- Remove the two screws above and the screw below the communication box.
- Slide out the communication box.
Front View of the Maintenance Bypass Cabinet
- Push the LEDs back into position and open the cable routing
cover.
Front View of the Maintenance Bypass Cabinet
- Connect the signal cables to the boards in the I/O cabinet.
- Route the signal cables from the I/O cabinet through the
top of the maintenance bypass cabinet to the terminal block. Class
2 circuits must be isolated from the primary circuitry as shown on
the illustration. Connect the signal cables in the maintenance bypass
cabinet.
Front View of the Maintenance Bypass Cabinet
- Close the cable routing cover.
- Pull the LEDs out and reinstall the communication box.
- Push the LEDs back into position and fasten with the screws.
- Reinstall the plate in front of the breakers.