AEC IST7 20kVA, User Manual

Page: 64 / 86

2 Overview
AEC UPS IST7 10-30 KVA
User Manual
56

Use and Operation
This chapter mainly introduces the operation procedure and method, including using announcements,
operation procedure, UPS start and parallel system start, etc.

Use Announcements

Before starting the UPS, check whether the load is proper. The load must not exceed the rated
output power of the UPS, which is to avoid overload protection.

Do not use the <ON> and <OFF> buttons on the UPS panel as the power supply switches of
load. Do not start the UPS frequently.

After UPS started and work stably, turn on the load. Start big-power devices before small-power
ones. Some devices have large starting current which may cause overload protection, it is better
to start these equipment before others. If the UPS needs to be shut down, turn off the load first.

When mains power outage, if the UPS is power supplied by generator, it is necessary to start the
generator firstly. After the generator work stably, the UPS can be connected, or it may cause UPS
or load damage. If the generator needs to be shut down, turn of the UPS firstly.

Operation Procedure
Before first start the UPS, it is necessary to do the check, see section 2.3.1 .Only pass the examination,
then you can power on the UPS. If the UPS won’t be used for a long time, it also needs to be checked
before startup. Operation procedure is as shown inFigure1.6.
Startup
Observe indicator on the panel
and inquire system information
Shutdown
If the UPS won’t be used
Power off
Power on
Check before
power-on
Qualified
Failure
Start load
Shut down
load
Running
stable
If it is left unused
for longtime
Figure1.6 Operation procedure

UPS Start and Shutdown
2.3.1 Check before Startup
Before startup, check according to following steps. Only when the check is OK, then the UPS can be
started.