UPS IST7 Series (60K-200K)
User Manual
5 Use and Operation
91
5.3 UPS Start and Shutdown
5.3.1 Check before Startup
Before startup, check according to following steps. Only when the check is OK, then the UPS can be
started.
Step 1
Ensure that the mains switch (POWER), bypass switch (BYPASS), output switch (OUTPUT),
maintenance bypass switch (MAINTENANCE) are all OFF.
Step 2
Check load.
Ensure that the load is not conductive load. The output of the UPS cannot be conductive load,
such as motor, fan, air-condition, etc. Generally, these loads are power supplied by power-grid.
Ensure that the load is close. And at the same time, the load capacity should not exceed the UPS
rated output capacity, or, it will cause overload protection.
Step 3
Ensure that there is no short-circuit between the live wire and neutral wire, live wire and grounding
wire of input and output.
Step 4
Measure the AC voltage of mains input terminal (POWER), and the voltage should be within the range
of 160V-280V, or, it can be started from battery status only.
Step 5
Measure the DC voltage of battery input. The voltage of positive battery group should be greater than
a certain value(+11.5× battery amount), the voltage of negative battery group should be less than a
certain value(-11.5× battery amount), and pay attention to the polarity, avoid wrong battery connection.
Step 6
Ensure that the auxiliary contact of battery switch is connected to the any input dry contact of bypass
unit and set the corresponding info in touch screen.
----End
5.3.2 UPS Startup
Step 1
Recheck all the system parameters setting in
Step 2
Close the "Limit switch" of all power unit
Step 3
Switch on the bypass switch
→
mains switch
→
external battery switch, it will in bypass power
supply mode. (If it is battery cool start, only just switches on the external battery switch, and then press
the battery cold start button on the bypass unit for more than 3s, the system power is set up).
Step 4
Start the inverter.
Summary of Contents for IST7 Series
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