MGE UPS Systems GALAXY PW 225KVA - Manual (Page 42)

"load on battery power" signal: (Volt-free changeover contact) indicating that the inverter is supplied
by the battery in the following cases:
- normal AC source outage or voltage drop.
- rectifier/charger shutdown.
- rectifier/charger current limiting.
This signal, which may be used to initiate process saving and shutdown
procedures, is time-delayed 30 seconds to avoid unnecessary operations
following micro-breaks.
"Maintenance position" signal: (Volt-free changeover contact) indicating that:
- maintenance bypass switch Q3BP is closed,
- bypass AC source input switch Q4S is open,
- inverter output switch Q5N is open,
- battery circuit breaker QF1 is open.
Signal to open battery
circuit breaker(s) QF1: In the event the "emergency off" button is pressed or to avoid an excessive
battery discharge (lasting more than three times the rated backup time plus two
hours).
Repo Contact: (Volt-free changeover contact) used to trip switching devices in the event of an
emergency shutdown.
"General Alarm" information: (Volt-free changeover contact) which includes:
- internal faults.
- information on temperatures outside tolerances in the battery room (optional).
- overload information (> In).
- static-switch ventilation and power-supply faults.
NOTE The maximum breaking capacity of the changeover contacts is 5A at 250V.
Galaxy PW™ UPS 100 to 225kVA
Installation 3 — 8 86-133060-00 A00