Georator T3UPS-33-700K, Instruction Manual

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(b) Open the battery breaker – If you want to shutdown all the power of the
UPS, continue to open the battery breaker. Now the DC bus is
only supported by the rectifier.
(c) Open the rectifier breaker – Opening the rectifier breaker will further take
the power source away from the DC bus, and the DC bus will start
to drop slowly. After 5 minutes, the DC bus will drop to a safe
level (< 20VDC).
(d) Open the reserve breaker – Before opening the reserve breaker, power
exists at the output. After opening the reserve breaker, the output
(or load) will no longer have power. Therefore, before opening
the reserve breaker, insure there is no critical load connected to
the output.
(e) At this point, all power has been cut off, and there should none of the
LED’s or LCD’s lit. The UPS now is completely shut off.
4.3. From Inverter to Bypass Procedure
If you want to stop the UPS for maintenance and do not stop the power supply
from the load, you can follow the steps below to turn the UPS to maintenance
bypass mode without interrupting the output power supply. 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) Switch off the inverter – The inverter can be switched off by pressing the
inverter OFF switch and the control switch simultaneously. The
load will be automatically transferred to reserve without
interruption.
(b) Open the battery breaker – You have to shutdown the power inside the UPS.
Therefore, continue to open the battery breaker.
(c) Open the rectifier breaker – Opening the rectifier breaker will take the
power source away from the DC bus, causing the DC bus to drop
slowly. After 5 min., the DC bus will drop to a safe level
(<20VDC).
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