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4.2.2 Test Procedure
CAUTION!
It can take 60 seconds for the system to boot up and complete self-tests.
The UPS is operating normally.
◆
Disconnect the AC input to simulate a power failure; the rectifier will turn off and
the battery will supply the inverter without interruption. The battery LEDs will
illuminate.
◆
Reconnect the AC input to simulate a power recovery; the rectifier will restart
automatically after 20 seconds and the inverter will supply the load. It is
suggested to use a simulated or non-critical load for testing. The UPS can be
used at maximum capacity during load testing.
4.2.3
Maintenance Bypass
To supply the load directly via the AC source, simply activate the internal mechanical
bypass switch.
CAUTION!
The load is not protected by the UPS nor is the power conditioned when the
internal mechanical bypass system is active.
Switching to Mechanical Bypass from Normal Operation
CAUTION!
If the UPS is operating normally and can be controlled through the display,
proceed with steps 1 through 5; otherwise, go to Step 4.
◆
Open the cover for the maintenance switch, the UPS will switch to bypass
mode automatically.
◆
Turn ON the MAINTENANCE breaker
◆
Turn OFF the BATTERY breaker
◆
Turn OFF the MAINS breaker,
◆
Turn OFF the OUTPUT breaker
The bypass source will then supply the load via the MAINTENANCE breaker.