35
teeth, into the trough of press line pliers, then clench pliers at full tilt (if your strength is not enough, you can use both
hands to press), press pins which are prominent outside into plug.
Network cable connection:
One end of a well pressed network cable connects to UPS
’
s SNMP card, the other one connects to the switch or
hub of LAN (local area network).
6.4. Connection inspection
After connecting all the wires and cables, check the following items:
Whether all of battery cables are connected correctly and in a good contacting status, whether all of input, output,
grounding wires have been properly connected to corresponding connation field on equipment, whether UPS's input
voltage, frequency, and phase sequence are consistent with UPS
’
s bypass voltage, frequency, and phase sequence.
7. Operation and management
7.1. Preparations before turning on the machine
Test tool
Millimeter
Ammeter
Computer for communication test
Load (actual load)
7.2. The first time turn on the UPS
Wiring inspections
Check the input line to make sure all of them meet the requirements.
Input supply test
Use millimeter to test input voltage and frequency, to make sure whether they are in the input range.
Load test
Check the output load by millimeter to make sure if there is short circuit. And calculate the loads.
Battery polarity test
Check whether the polar is right or not by millimeter and the voltage of battery belongs to the input range of UPS.
7.3. Testing in AC mode operation
Procedures of turning on the machine
Turn off the bypass switch and output switch and check whether the machine bypass is in the normal condition.
Turn off the rectification switch; the rectification will be done automatically. After that low-voltage battery indicator
light will extinguish and inverter indicator will lighten, automation will become inverter running.
Turn off the battery switch, and battery will be tested by UPS. After that battery will be rectified again, when it
becomes normal, use the concurrent ammeter to test charging current.
7.4. Testing in battery mode operation
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