USER MANUAL-S600E
78
S600E
Procedures For Completely Powering Down the UPS
In order to shut the UPS down completely and disconnect the power supply to the load, proceed as follows: All
power switches, isolating switches and breakers are switched to off, and the UPS no longer supplies power to the
load.
1.
Unplug the REPO terminal on each UPS to deactivate the rectifier, inverter, static switch and battery.
2.
When the UPS is equipped with an external battery, set the corresponding external battery switch to the off
position until all the UPS modules have been disconnected from the batteries.
3.
Set the rectifier input switch Q1 and bypass input switch Q2 on each UPS to off. At this point, all the internal
power supplies are deactivated and the LCD screen is switched off.
4.
Set the output switch Q4 on each UPS to off.
Procedures for Shutting Down the UPS Completely While Maintaining Power to the Load
The following procedures may be used to shut the UPS down completely are applicable for completely, while
maintaining the power supply to the load. Refer to the procedures in 7.3.2 .
7.4
LBS System
Cabinet Installation
An LBS system consists of two independent UPS systems, each consisting of two parallel UPS modules, as shown in
Figure 7-3. The LBS system provides high reliability, which makes it suitable for use with loads having multiple input
terminals. In the case of single-input loads, an STS may be installed to power the load.
The system uses the LBS cables to synchronise the outputs of two independent (or parallel) UPS systems.
Place the UPS modules side by side and interconnect the UPS modules according to the following instructions.
The following procedures will interrupt the power supply to the load, switching it off.
Post a label on the AC input distribution line (genera
lly at a distance from the UPS) to alert
personnel that UPS maintenance
is in progress.
2.
Wait 10 minutes for the internal DC bus capacitors to discharge. Then the UPS is completely shut down.
Hazardous voltages are still present on the battery terminals, even after the UPS has been shut
Warning: hazardous battery voltage
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