Shield M10U, Руководство пользователя, Страница: 46 / 72

Chapter 6 Operating Instructions
Shield M10U user manual 37
rectifier enters normal operation state, and after about 20s, the rectifier indicator goes steady green. After
initialization, the bypass static switch closes and bypass indicator goes steady green.
2. Open the external maintenance breaker. Open manual bypass breaker.
Warning
Before opening the maintenance breaker, make sure that static bypass switch is working according power flow
displayed on LCD.
3. After about 60s, UPS transfers to inverter. Close external battery breaker and internal battery breaker (for battery
built-in cabinet).
6.3.3 Procedure for Switching from normal mode to manual bypass mode
1. Press the “ ” menu on the LCD. The UPS Mimic indicator Inverter will green flash and also the Status
Indicator will turn red and will be accompanied by an audible alarm. The load transfers to static bypass, and the inverter
standby.
2. Close manual bypass breaker to ON position. Open bypass breaker.
3. Press EPO button to ensure the battery current is 0. Open the battery circuit breaker or disconnect battery
terminals.
Warning
Make sure not to open external input breaker, otherwise, UPS output will be interrupted.
6.3.4 Procedures for Switching from manual bypass mode to normal mode
1. Press “ ” in function menu to clear EPO alarm.
2. Close bypass breaker and bypass indicator goes steady green.
3. Open manual bypass breaker.
4. Press the “ ” menu in bypass mode, UPS transfer to inverter after about 60s.
5. Close external battery circuit breaker or internal battery circuit breaker.
Warning
Before opening the manual breaker, make sure that static bypass switch is working according power flow displayed on
LCD.
6.4 Procedure for Completely Powering Down a UPS
If you need to power down the UPS completely, follow the procedures as:

Press EPO button on the front panel

Open external battery breaker and internal battery breaker

Open bypass breaker, external input breaker, external output breaker
If the rectifier and bypass use different power supply, you need to open these two input breakers respectively.
6.5 EPO Procedure
The EPO button is designed to switch off the UPS in emergency conditions (e.g., fire, flood, etc.).To achieve this, just press
the EPO button, and the system will turn off the rectifier, inverter and stop powering the load immediately (including the
inverter and bypass), and the battery stops charging or discharging.
If the input utility is present, the UPS control circuit will remain active; however, the output will be turned off. To
completely isolate the UPS, you need to open the mains input breaker and battery breaker.
警告 危 险
警告 危 险
警告 危 险