Table of Contents
Advertisement
Chapter 1 - General Description
Design Concept
1.2.3
UPS Power Switch Configuration
The power switch locations in the various 7200 models are shown in figure 1-3 figure 1-2 illustrates the
7200 series UPS module in what is known as the "Split Bypass" configuration. In the "Split Bypass"
configuration the static bypass line is connected by a separate power switch to a dedicated `bypass'
power source which also feeds the maintenance bypass line. Where a separate power source is not
available the Bypass ( Q2 ) and Rectifier input supply connections would be linked together.
With the exception of the maintenance bypass isolator, all the isolators shown must be closed during
normal UPS operation.
1.2.4
Battery circuit breaker
The battery is connected to the d.c. Busbar through a circuit breaker fitted inside the battery cabinet –or
located adjacent to the batteries where a battery cabinet is not used. This circuit breaker is closed
manually, but it contains an undervoltage release coil which enables it to be tripped from the UPS
control electronics following certain detected faults. It also has a magnetic trip facility for overload
protection.
1.2.5
Battery Cabinet
The batteries associated with the UPS are generally housed in a purpose-built cabinet located
along-side the main UPS equipment.
It is possible to install batteries of various types and capacity in the cabinet to obtain the required
autonomy characteristics.
The battery cabinet can be purchased in one of the following forms:
1. Complete installation comprising the battery cabinet, batteries and circuit breaker.
2. Battery cabinet and circuit breaker only –with no batteries.
3. Battery cabinet only –with no batteries or circuit breaker.
1.2.6
Battery circuit breaker box
As an alternative to the battery cabinet, a battery circuit breaker can be provided in a custom built box.
This Battery Circuit Breaker Box is designed to be wall or rack mounted and is connected between the
UPS and Battery.
1.2.7
Battery temperature compensation
For systems with batteries installed in non-optimized temperature conditions, the 7200 UPS offers a
battery temperature compensation circuit. As the temperature inside the battery cabinet/area rises the
d.c. bus bar voltage reduces in order to sustain the battery at its optimum charge voltage. This will
assist in prolonging the life of the battery.
Page 1-4
Issue 6
(03/98)
document in response to "powersure ups"
7200 Series UPS User Manual
Single Module and 1+1 Parallel System
Hide quick links:
Advertisement
Table of Contents
