Lucent Technologies 415B Battery Plant for 4ESS
Issue 6 September 1999
System Description 2 - 1
2
System Description
415B Battery
Plant Overview
Two 4ESS
switches are powered by two independent 415B
Battery Plants. Each 415B Battery Plant consists of two Power
Distribution Service Cabinets (PDSC), a Control and
Distribution Bay, up to four rectifiers, three battery strings, two
Power Distribution Frames, an Enhanced Ground Current
Monitor, and a Galaxy Controller.
The two independent plants are labeled Battery Plant “A”
and Battery Plant “B”. The dc output cables between the
Control and Distribution Bay and the Power Distribution
Frames of each plant are different colors for clarification
purposes. The cables are colored as follows:
•
Battery Plant “A” - Red and Red with Black tracer
•
Battery Plant “B” - Blue and Blue with Black tracer
Power
Distribution
Service Cabinet
(PDSC)
Commercial ac is brought into two ac distribution panels and
sent to each rectifier in the plant. Each ac distribution panel is fed
from a separate input circuit breaker, ideally from a different
power station. There are two ac distribution panels per battery
plant that can either be free standing or wall mounted. One of
three ac input voltage levels may be utilized for the rectifiers in
the plant: 208V, 240V, or 480V at 60 hertz. Three-phase power
is required.
There are a maximum of four rectifiers in the plant, each having
its own circuit breaker located in one of the ac distribution
panels. The circuit breakers are the type that may be tagged and
locked out for safety. Normally, each ac distribution panel feeds
two rectifiers. Refer to Figure 2-1.
