MGE UPS Systems Galaxy PW user manual Shutdown of the inverter

Galaxy PWTM 100 to 225 kVA

shutdown

shutdown of the inverter

■press the "inverter OFF" button 8 on the control panel for three seconds (see figure 19).

single-UPS unit

■the green "inverter" light 4 on the con- trol panel goes off;

■the green "static-bypass" light 3 goes on;

■the inverter stops;

■if bypass AC source (Mains 2) transfer conditions are satisfied, the inverter shuts down and the load is transferred to the bypass AC source;

■if bypass AC source (Mains 2) transfer conditions are not satisfied, the inverter does not shut down. The message

"MAINS 2 OUTSIDE TOLERANCES, TRANSFER DISABLED" is displayed.

parallel UPS unit

■if the system is redundant, i.e. the other parallel-connected inverters can supply the load on their own, the inverter shuts down and the green "inverter" light 4 goes off.

The load is not affected in that the other inverters continue to supply it normally;

■if the system is not redundant, the other inverters go to overload status.

If overload conditions are overrun, the load is transferred to the bypass AC source:

❏ the green lights 3 turn green,

❏ the green "inverter" light 4 goes off.

shutdown of a rectifier/charger

It is recommended not to stop the rectifi- er/charger because the battery will no longer be charged. Except in the case of a test of the inverter on battery power, the rectifier/charger should be shutdown after the inverter to avoid unnecessary battery discharge.

Proceed in the following order:

■open battery circuit breaker QF1;

■open normal AC input circuit breaker Q1:

❏ the rectifier/charger shuts down,

❏ the green "rectifier/charger" light 1 goes off.

14 Shutdown