20 - 80 kVA parallel UPS systems
User’s and Installation Manual
1018390
Revision C
7
2. Introduction
2.1 Overview
This manual gives you the necessary information about parallel UPS systems in redundancy
or capacity configuration. The largest systems include maximum of four UPS modules in
parallel configuration.
Instructions and procedures are covered in this manual: shipping; storing; handling; installation;
user start-up and operation; troubleshooting; and preventive maintenance. The manual is
intended for the chief operator/system supervisor, electrical consultants and installation
electricians. It describes the specific functions and features of the parallel UPS system.
Figure 1
.
A parallel configuration constructed with four UPS modules.
Always remember that the parallel UPS system is connected to the AC mains power and
contains internal high-current batteries for back up. Hence, prudence principle must be
followed to prevent electrical hazards when operating the parallel UPS system.
2.2. Easy power protection
One can choose from a variety of power protection devices to shield critical data and
equipment from power problems. However, by far the most sophisticated devices are
Uninterruptible Power Systems (UPS).
An on-line, double conversion UPS is ideally suited for the most critical equipment. It provides
clean AC power and protects the critical load against nine types of power problems:
1.
Power outages
2.
Power sags
3.
Power surges
4.
Undervoltages
5.
Overvoltages
6.
Switching transients
7.
Line noise
8.
Frequency variations
9.
Harmonic distortion
