Lucent Technologies H569-420, Руководство по эксплуатации продукта

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Lucent Technologies ECS Minicell Battery Plant H569-420
Issue 5 February 1997 Maintenance 7 - 5
Repair and
Replacement
Load Circuit
Breaker
Replacement
Obtain a replacement circuit breaker. See Section 8.
1. Verify that the faulty breaker is in the OFF position.
2. Loosen the 1/4 turn fasteners and open the dc distribution
cover.
3. Measure the voltage on the distribution module at the load
connection associated with the faulty breaker, to verify that
the breaker is truly open. The voltage on the distribution
module relative to the battery bus bars or circuit breaker
bus bar should be approximately the float voltage of the
plant.
If the faulty breaker is still closed, the load equipment which it
powers must be shut down so that no current flows through the
breaker.
4. Unplug the faulty breaker from the distribution module.
5. Switch the new circuit breaker to the OFF position before
plugging it in.
6. Plug in the new breaker, ensuring that line, load and alarm
connectors are properly mated (see Figure 2-4).
7. For safety, close the dc distribution door before proceeding
to the next step.
Note
Procedures in this section may cause power alarms to be
issued temporarily. Notify the alarm reporting center before
starting any repair procedure.
DANGER
Do not attempt to unplug a circuit breaker which may be
carrying current. Arcing may result in injury or equipment
damage.