Georator T3UPS-33-700K, Instruction Manual

Page: 44 / 98

4.
OPERATIONS
After all cables have been connected, and power source is available at the input
terminals, the UPS is ready to operate. Before turning on any switch or breaker,
once again check the following:
(a) Check that the input voltage conforms with the UPS’s rated input
voltage.
(b) Check that the input frequency conforms with the UPS’s rated input
frequency.
(c) Check that the load at the output is switched off.
(d) Check that all breakers and the battery disconnects are opened.
(e) Check that no foreign material is inside the UPS.
4.1. Switch on Procedure
To start the UPS from complete shutoff to normal operation, follow the steps
below to turn on the UPS. This procedure is for generally standard systems, 3
phases 4 wire “WYE” Input. For special inputs, please refer to the brief
instruction label in front of the PCB holder.
(a) Close the reserve breaker – The reserve and output LED on the mimic
panel will light up, indicating the reserve static switch loop is
energized. Therefore the output has power now. The supply of
power in the UPS is established and the fans will operate.
(b) Close the rectifier breaker - The rectifier will be automatically started if the
power source connected is correct. The DC voltage will slowly
rise up (15 – 30 sec.) until the designated voltage is reached, and
will stay at that value. Now, the DC is already ready for the
inverter.
(c) Close the battery breaker - For safety purposes, a fuse is employed between
the batteries and the DC bus. Now the batteries will take over to
supply the DC bus if rectifier mains fail.
4-1