Lucent Technologies 415B Battery Plant for 4ESS
5 - 6 System Testing
Issue 6 September 1999
Pre-test Setup
These system test procedures are based on the assumption that
all installation work has been completed, battery strings have
been initially charged, and no working loads have been
connected to the battery plant.
Plant loads will be simulated through the use of a test load box.
Verify that spare fuses for each of the components of the battery
plant are available and accessible. Do not overlook the fuses
associated with the battery strings.
Rectifier Tests
Before performing the system test procedures, complete
individual rectifier tests by following procedures in the rectifier
product manual,
System Test
Procedures
Note
Circuit Breaker #1 also provides power for the alarm circuit.
Note
At this point all rectifiers are on and the plant is connected to
the battery and to the Power Distribution Frames. The test
load is connected.
Warnings
A limited recharge alarm may occur at the Galaxy Controller
during these tests.
Whenever rectifiers have been turned on, their output filter
capacitors stay charged for several minutes. Do not place
hands inside a rectifier until these capacitors have discharged
to a safe level (below 50 volts).
Remember that this is a 140V (nominal) battery plant.
Personal safety must be considered at all times while working
on this plant. The batteries will be floating at 151.9 volts.
When power is removed from the rectifier, the display may
stay lit until the dc output voltage is less than 30 volts.
