Chapter 7 UPS Operation
68
2. Repeat the above-mentioned
Step 1
to the rest of the parallel UPSs in order to
let all parallel UPSs run in ‘
Bypass Mode
’.
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Battery
breaker.
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breaker.
5. (1) Wait about 5 minutes for each DC CAP to discharge, and ensure that each
LCD shows the battery voltage lower than 5V.
Or, (2) Press each UPS’s ‘
ON
’ and ‘
OFF
’ buttons simultaneously for 3 seconds
to let its DC CAP to discharge, and ensure that each LCD shows the battery
voltage lower than 5V. After confirmation, press each UPS’s ‘
OFF
’ and ‘
’
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UPS Output
breaker and
Reserve Input
breaker.
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WARNING:
If you perform the following turn-off procedures to each parallel UPS, all
power supplying to the UPS will be completely cut off. Please make sure
the critical loads connected to the UPS have already been safely shut down
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1. Press each parallel UPS’s ‘
EPO
’ button. After that, each LCD will display ‘I
nhibit
Output
’.
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Battery
breaker.
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UPS Output
breaker.
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breaker and
Reserve Input
breaker.
WARNING:
In battery mode, even if you follow the above-mentioned turn-off
procedures to turn off each parallel UPS, there is still voltage existing
inside every UPS. Do not touch any UPS to avoid eclectic shock.
