Introduction Liebert EXL S1
8 User Manual 10H52226UM60 - Rev. 1 - 01/2017
1.3. Terms used
1.3.1. Service Bypass
A switch that provides continuous supply to the load via the bypass input power line during
maintenance work; also referred to as the maintenance bypass.
1.3.2. Static Bypass Switch
A thyristor switch which connects the load directly to the power line; also referred to as a static switch
or static bypass.
1.3.3. Qualified personnel
Personnel who are familiar with the installation, assembly, placement into service and operation of the
product, and are qualified to carry out these procedures.
1.3.4. Touch screen
The operator interface for controlling and testing the machine state includes a touch screen.
1.4. Glossary
MSS = Main Static Switch
RAU = Remote Alarm Unit
TCE = Top Cable Entry
SBS = System Bypass Switch
MBSM = Multiple Bus Synchronization Module
1.5. Documentation structure
These instructions may be supplemented with additional sheets, describing specific extensions or
options.
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