Liebert 110V - Manual (Page 23)

User Manual Chapter 3 – Installation Procedure
N N e e t t w w o o r r k k P P o o w w e e r r S S w w i i t t c c h h
Page 4-1
4 Chapter 4 - Specifications
4.1 General Specifications
• Manual and Automatic Transfers
• Sense and transfer time – less than 6 milliseconds
• Break-Before make switching
• Selectable preferred source
• Selectable auto/manual retransfer
• In-phase transfer window – adjustable from 5 ± 1°
• Convection cooling
• Hot swappable electronic static switching module
• Live mimic on Hot swappable unit for indicating load supply status & alarms
• Make before break manual bypass switch to transfer load from static switch to direct source 1 or source 2
4.2 Electrical Specifications
ELECTRICAL
CHARACTERISTICS
UNITS DESCRIPTION
Nominal Input Voltage Volts 110, 115 or 120 volts singe phase, 3W+G, 50 Hz. Solidly grounded
power sources
Nominal Output current Amps 25
Frequency Hz 50 / 60
Source unhealthy status -
Guaranteed Transfer to alternate source within –15 % of Vnominal
Load Power factor range - 0.5 to unity leading or lagging
Load Crest factor - upto 3.5
In-Phase transfer window - Adjustable from 5 ± 1º
Source voltage distortion % up to 10% THD
Overload capability % 125% of continuous current for 2 hrs, 1000% for two cycles minimum.
Over current Protection - By semi conductor fuse
Short circuit withstand
capability
Amps upto 20,000 symmetrical amps, protected by internal fusing.
Redundant Control Power
supplies
- taken from available source 1 and source 2
Integral Maintenance Bypass - Make before break operation
Alarm contacts - Eight Isolated Normally Open alarm & static switch Status contacts.
Unsynchronised transfer
6 milllisec for synchronized transfer and 16 millisec for unsynchronized
transfer.