Input Harmonic Filter; Introduction; Specification; Notes On Connection - Liebert 7200 Series User Manual

7200 Series UPS User Manual
Single Module and 1+1 Parallel System
4.7

Input Harmonic filter

4.7.1

Introduction

An optional input harmonic filter can be added to the 7200 series UPS to improve the UPS input power
factor and reduce the amount of electrical noise reflected into the input three phase supply.
The filter components are contained within the UPS cabinet therefore extra cooling is required ( see
figure 4-15 ). The filters are matched to the UPS capacity, resulting in different part numbers for each
system as follows:
30 kVA filter
40 kVA filter
60 kVA filter
4.7.2

Specification

Input voltage
Input voltage tolerance
Nominal frequency
Input frequency tolerance
UPS input current distortion
UPS input power factor
4.7.3

Notes on connection

This option is normally factory fitted with the harmonic filter becoming an integral part of the UPS as
shown in the block diagram figure 4-14 and the component location diagram figure 4-15. Therefore,
connection of the input power supplies does not change from that given in chapter 3.
Note: The input Neutral connection must always be connected to the bypass input `N3' on the UPS.
Maintenance Bypass
power Switch Q3
Bypass
a.c.
Bypass power Switch Q2
Supply
Rectifier
input
a.c.
Rectifier
Supply
input
Switch Q1
40/60kVA units
additional fan
connections
E8
document in response to "powersure ups"
4641015 P
4641016 Q
4641017 R
380-400-415, three phase
±10%
50 Hz
± 5%
10% max.
>0.9
L5
RECTIFIER
L6
C26
to
C29
BATTERY
Optional Input
Harmonic Filter
E7 E1
Figure 4-N . Block diagram of Input Filter and UPS
STATIC
INVERTER SWITCH
and K1
Battery
Circuit
Breaker
30kVA additinal
fan
connections
E4 E1
Chapter 4 - Optional equipment
Input Harmonic filter
UPS
a.c.
Output Output
Power
Switch Q4
Page 4-19
Issue 6
(03/98)