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UPS for 400 Vac Grid, Installation Guide, doc. rel. 3.0
3.4.3.
Test: Battery and blackout mode
This test is designed to verify the operation of UPS
in the event of a blackout, when no ac power
is supplied to the UPS.
To perform this test, the system must be in
Normal Mode
plus the battery must be
attached and fully charged.
To perform the battery mode blackout test:
1.
Turn all ac input to the system OFF.
Turn OFF the ac input switches to both Bypass and Rectifier.
2.
Test the voltage at the system output between the phases and the neutral.
It should be within the specified range of 230 Vac ±3%.
3.
When complete turn ac input on. The batteries revert to charging.
3.4.4.
Test: ATS
If the input of the system is configured to run from both the grid and, during grid power failure,
from the generator verify that the ATS (Automatic Transfer Switch) provides the full 10 second
changeover time. The system will transfer to battery mode when the grid feed is dropped. Once
the 10 second changeover time is complete and the generator has begun supplying ac the UPS
will begin to operate the rectifier.
The rectifier will then begin its power walk-in to slowly transfer the load from the battery to the
generator. An auxiliary contact can be set to limit battery charging during the use of the
generator. Select an auxiliary contact that can be wired to the N.O. (normally open) (default
system controller set) or N.C. (normally closed) transfer switch dry contact.
Do not use auxiliary #1 or #3 they are already taken by the back-feed and surge
protector.