Lucent Technologies Lineage
®
2000 ECS Battery Plant H569-403
2 - 8 Product Description
Issue 4 February 1997
Group 8, with the addition of a remote termination panel
allowing external connection to the board from outside the
controller. (See the ECS controller manual for further
information.)
DC-DC Converter
The Lineage
®
2000 KS23832 24-volt to -48-volt dc-dc converter
system utilizes 50KHz technology to provide a reliable and
economical means of obtaining closely regulated and filtered
-48-volt dc power when only one primary source of +24-volt dc
power is available.
The dc-dc converter system consists of KS23832 converter shelf
assemblies equipped with one or two KS23832 10-ampere
+24-volt to -48-volt converters. A maximum of two shelves with
four converters may be equipped per bay. Group 41 provides a
converter shelf equipped with two converters and Group 42
provides a converter shelf equipped with one converter.
Converters should be sized with n+1 redundancy. This extra
reserve not only provides backup to your operating converter but
also provides the necessary energy required to operate fuses.
Distribution to the -48-volt load is provided via a meter and fuse
panel.
The converter shelf assembly has mounting brackets for
standard 26-inch relay rack mounting. Each converter module
contains a blocking diode, low input voltage shutdown, current
limiting, and high voltage shutdown with automatic restart. The
converter shelf assembly is equipped with major and minor
alarms. The converter shelf assembly has two Form C contacts,
one for converter major and one for converter minor. When one
converter fails, the converter minor relay will operate and when
two converters fail, the converter major relay will operate. For
more details, refer to the KS23832 converter product manual.
DC Distribution
The ECS H569-403 distribution includes the plant charge and
discharge bus bars, plant shunt, LVD/R contactor, and
associated circuitry. Space below these items accommodates
circuit breaker panel for 24-volt distribution. A meter and fuse
panel is also available for 48-volt loads when the plant is
equipped with 24-volt to -48-volt converters. A complete
discussion of the ECS dc distribution is presented in the
following section of this manual.