Lucent Lineage
®
2000 ECS Battery Plant H569-408
4 - 2 Maintenance
Issue 2 July 1996
DC Circuit
Breakers
Circuit breakers CB1 through CB42 are located in the dc
distribution.
Any circuit breaker in the battery plant is ON (or closed) when
the handle is in the Up position, and OFF (or open) in the Down
position. A circuit breaker which is supplying a load may be
turned off manually, but this may affect service to the load. If a
breaker has tripped off, the overcurrent problem should be
cleared before restoring power to the load by resetting the
breaker. See paragraph “Troubleshooting” for information on
tripped breakers.
Troubleshooting
Table 4-A provides a list of observable trouble conditions, their
possible causes and the necessary corrective action for each
cause. The table is organized by the subsystem in which the
trouble is observed.
