OnLine Power Power Wave 4 - Manual (Page 50)

6005-145 Rev. A 4-3
(b) Open the (optional) battery breaker – If you want to shutdown all the power of the
ELI, 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) If there is input breaker, open it accordingly.
(f) At this point, all power has been cut off, and there should none of the LED’s or
LCD’s lit. The ELI now is completely shut off.
4.3. From Inverter to Maintenance Bypass Procedure
If you want to stop the ELI for maintenance and do not stop the power supply from
the load, you can follow the steps below to turn the ELI to maintenance bypass
mode without interrupting the output power supply.
(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 (optional) battery breaker – You have to shutdown the power inside the
ELI. Therefore, continue to open the battery breaker.