NAUTILUS 10●520
Three phase in/out
Rev.00
– 09 Luglio 2015
26
When the AC mains input voltage is within the acceptance range, the rectifier will start within 30 seconds,
at which point the inverter will also start. When the output switch is activated, the green LED on the
inverter will light up.
4.2.2 AutoTest procedure
WARNING!
UPS operates normally.
It may take about 60 seconds to completely perform the self test.
◆
Open the input disconnector to simulate a mains failure, the rectifier will switch off and the
batteries will power the inverter without interrupting the UPS output voltage. In this condition
the battery LED will light up.
◆
Close the input switch to simulate the return of the network, the rectifier will start automatically
after about 20 seconds and the inverter will continue to power the load. It is suggested to use a
dummy load for the execution of the test. The UPS can be loaded up to its maximum capacity
during the execution of the test.
4.2.3 Start-up without mains (Cold start).
WARNING!
Follow these procedures when the input AC Utility fails, but battery is in normal condition.
◆
Close the battery switch. The batteries supply the "Auxiliary power board" board.
◆
Close the UPS output disconnector.
Activate the modules using the power-on button (cold start) (no. 5 above).
When the battery voltage is good, the rectifier starts up and 30 seconds later the inverter
turns on and starts running and the battery LED lights up
