Application Guide

SAG582140000 System Application Guide
Issue AW, June 3, 2014 Spec. No. 582140000 (Models 802
NLDB, 802NLEB and 802NL-B)
Page 2 of 134
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Control-Alarm (MCA) assembly. This panel in the Primary Power Only Bay
also houses the optional LMS Main CPU circuit card of the integrated LMS
Monitoring System. In a Secondary Power Only Bay, this panel can be equipped
with an optional LMS Expansion CPU circuit card. (The optional LMS Monitoring
System provides a higher level of monitoring and controlling capabilities to the power
system.)
The Monitor and Control Panel in both Primary and Secondary Power Only Bays
contain a seven-slot card cage to house MCA alarm relay circuit cards, MCA
input/output (I/O) circuit cards, and optional LMS I/O circuit cards. (If a Secondary
Power Only Bay is to be equipped with optional LMS I/O circuit cards, it must also be
equipped with an LMS Expansion CPU circuit card.)
• Distribution Only Bays
The system can consist of one (1) to eight (8) Distribution Only Bays.
Each Distribution Only Bay provides four (4) distribution buses.
Each distribution bus accepts a choice of 218-type circuit breakers and TPL-type
fuses.
A Distribution Only Bay may also be equipped with an optional distribution panel
which accepts a choice of TPS/TLS-type fuseholders or Bullet Nose-type circuit
breakers.
• Rectifiers
The rectifiers provide load power, battery float current, and battery recharge current
during normal operating conditions.
• MCA (Meter-Control-Alarm)
The MCA controls the operation of the rectifiers and provides power system control,
metering, monitoring, and alarm functions.
MCA Local Control Panel: This panel is located on the front of the Primary
Power/Distribution or Power Only Bay and contains a keypad, display, and indicators
for local MCA User interface.
MCA Relay Circuit Card: Each MCA relay circuit card
provides six (6) sets of Form-C relay contacts for customer
external alarms. These relays are User programmable for
various power system alarms. Up to sixteen (16) MCA
relay circuit cards can be installed in the Primary and
Secondary Power/Distribution and Power Only Bays. The
Primary Power/Distribution and Power Only Bays are
factory equipped with two (2) MCA relay circuit cards.
MCA I/O Circuit Cards: The MCA I/O circuit cards provide
analog inputs/outputs and binary inputs. Up to sixteen (16)
MCA I/O circuit cards can be installed in the Primary and
Secondary Power/Distribution and Power Only Bays.
• Optional Integrated LMS Monitoring System
The LMS Monitoring System consists of an LMS Main CPU
circuit card, optional LMS Expansion CPU circuit cards,
optional LMS I/O circuit cards, optional LMS Expansion
Cabinet, and optional LMS Expansion Assemblies.
The LMS Main CPU circuit card is mounted in the Primary
Power/Distribution and Power Only Bays. Each Secondary
Power/Distribution and Power Only Bay that is to be
equipped with optional LMS I/O circuit cards must
contain an LMS Expansion CPU circuit card. LMS
Distribution Only Bay
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