Emergency Power-Off (Epo) (Manual); After Using The Emergency Power Off - Gamatronic POWER+ User Manual

4.9.5

Emergency Power-Off (EPO) (manual)

An external EPO switch can be used for system shutdown in emergency situations. The EPO switch cuts
the supply to the load with immediate effect and cannot be reset.
Once switched OFF by the EPO, the POWER + must be restarted manually, after first disconnecting and
then reconnecting the rectifier ac input circuit breaker, the bypass ac input circuit breaker, and the battery
box circuit breaker.
EPO wiring and switch rating must be 5 A / 230 Vac.
4.9.5.1

After using the Emergency Power Off

To return the UPS system to normal operation after use of the EPO switch, you must do the following:
1. Turn OFF the ac output circuit breaker.
2. Turn OFF the ac rectifier input circuit breaker.
3. Turn OFF the ac bypass input circuit breaker.
4. Turn OFF the battery circuit breaker.
5. Return the EPO switch to its normal position.
6. Switch ON the ac bypass input circuit breaker
7. Switch ON the ac rectifier input circuit breaker.
8. Switch ON the battery circuit breaker.
9. Wait about two minutes until the UPS initialization procedure has completed.
10. Switch ON the ac output circuit breaker.
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