Lucent Technologies Lineage
®
2000 ECS/GPS Battery Plant J85500G-2
3 - 16 Engineering, Planning and Ordering
Issue 6 May 1999
capacity of the Lineage
®
2000 ECS battery plant grows in 50
ampere increments with the SR50A/48V rectifier, the optimum
battery capacity increment may be approximated as follows.
A-hr increment = (50 A) x (reserve time in hours) /(minimum
recharge factor)
System Reliability: In most battery plants it is possible have an
open circuit in the battery subsystem that could remain
undetected until ac power is lost and battery power is required.
Therefore, for applications where service reliability is critical, it
is a good practice to select battery size such that at least two
strings are required. Multiple strings allow for easier
maintenance on the battery system without jeopardizing service
to the load equipment.
Initial and
supplementary
bays
All subsystems of the ECS battery plant together can occupy one
framework called the INITIAL BAY. Up to 12 rectifiers,
controller, capacitor charge panel, a breaker or fuse panel and
bus bars will fit in this space with an ECS controller. Only nine
rectifiers will fit in this space with a Galaxy controller.
Additional dc output (rectifiers) and distribution panels
(breakers/fuses) can be configured in a supplementary bay.
If Lucent Technologies VR batteries are used, additional
framework, called battery supplementary bays, is necessary
for strings of VR batteries, with up to two strings per bay. Such
supplementary bays are engineered and ordered as part of the
ECS Model J85500D-3 plant or from J85504C-1. See these
drawings for typical arrangements of supplementary bays with
Lucent Technologies VR batteries.
For some installations it may be desirable to order all
supplementary bays for anticipated growth as part of the initial
installation. Installation of supplementary framework during the
initial construction and support of cabling systems will simplify
the future battery plant expansion.
Other vendors’ batteries must be engineered per the
manufacturer’s instructions. Shelf-mounted batteries, offered by
some suppliers, may be integrated into a frame line-up with the
ECS battery plant. Most other vendors’ batteries, however, are
designed for mounting on stands that require special floor plan
arrangements.
