KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 17
from the UPS output terminals.
◆
Switch ON UPS input switch
If the Rectifier input is within voltage range, the rectifier will start up in 30 seconds, the inverter
will start up after.
◆
Switch ON UPS output switch
If the rectifier fails at startup, the bypass LED will light up. When the inverter starts up, the UPS
will transfer from bypass mode to inverter mode, and then the bypass LED extinguishes and the
inverter LED lights up. The status will be shown on the LCD display.
4.2.2 Test procedure
CAUTION!
When the UPS is operating normally it may take 60 seconds to boost up the
system and perform self-test completely.
◆
Switch off the MAINS to simulate utility failure.
The rectifier will turn off and the battery should feed the inverter without interruption. At
this time, the battery LEDs should be turned on.
◆
Switch on the MAINS to simulate utility recovery.
The rectifier will restart automatically after 20 seconds and the inverter will supply to the
load. It is recommended to use Dummy loads for testing. The UPS can be loaded up to
its maximum capacity during load test.
4.2.3
MAINTENANCE BYPASS
To supply the load from the Mains, activate the internal mechanical bypass switch.
CAUTION!
The load is not protected by the UPS when the internal mechanical bypass system is
active and the power is not conditioned.
Switch to mechanical bypass
CAUTION!
