User manual

56 Chapter 8 Product Specifications
NXr UPS Module And Parallel System 30kVA ~ 200kVA User Manual
Appendix 2 List Of Abbreviations
Abbreviation Description
UPS Uninterruptible power system
AC Alternating current
DC Direct current
SCR Silicon-controlled rectifier
RCCB Residual current circuit breaker
RCD Residual current detector
RFI Radio frequency interference
EOD End-of-discharge
CSA Cross sectional area
PE Protective Earth
SCR Silicon-controlled rectifier
EPO Emergency power off
MCCB Moulded-case circuit breaker
CT Center tap
BCB Battery circuit breaker
LBS Load bus synchronizer
PWM Pulse width modulation
DSP Full digital control
STS Static transfer switch
VRLA Valve-regulated lead-acid
LCD liquid crystal display
EMC Electromagnetic compatibility