Vertiv Liebert EXS 80kVA UPS, Руководство пользователя

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9
Vertiv™ Liebert EXS 80kVA UPS User Manual
1 Overview
Figure 1-2 UPS power supply switch configuration
Bypass input
Mains input
Neutral line input
Battery BCB
Rectifier
Inverter
Charger
UPS
Maintenance bypass
switch Q3
Bypass input switch Q 2
Rectifier input
switch Q1
Bypass automatic switch
Inverter
Output
switch Q5
UPS output
Shorting copper bar
of common input
configuration
DC bus
switch
N line switch QN
NOTE: The mains input and bypass input share the same neutral line.
1.2.5 Battery Circuit Breaker (BCB)
The external battery shall be connected to the UPS through the BCB. The BCB box is an option, which
shall be installed near the battery. The BCB is closed manually, and has a shunt tripping coil. When the
system is faulty and the BCB needs to be disconnected, the UPS control circuit will send a signal to the
shunt tripping coil so as to trip the BCB. It also has a magnetic trip facility for overload protection and short
circuit protection.
1.3 Parallel System
Up to four UPS modules can be connected in parallel to increase the system capacity and reliability. The
load is equally shared between the paralleled UPS modules.
Moreover, two UPS modules or parallel system can comprise a dual bus system. Each parallel system
has independent output. Output synchronization is achieved through the LBS cable or LBS device, thus
enabling seamless load transfer between the two parallel systems through the STS device.
1.3.1 Parallel System Features
1. The hardware and software of parallel system are completely the same as those of the single module.
The parallel system configuration is achieved through settings in configuration software.
2. Parallel cables are connected in a ring, providing both system reliability and redundancy.
3. The total load of the parallel system can be queried from the LCD of each UPS.