Starting a parallel group : First start-up
Status of system
- Rectifier input / Bypass input: Energized
- Manual bypass switch : In Auto position
1. Close Main bypass input breaker
2. Close Main static bypass switch of UPS
3. Close Output switch of UPS
4. Press the key 1 x shortly on UPS. (UPS are in bypass operation.)
5. Close the rectifier input breaker
6. Press the key on each UPS unit. The loading process for the intermediate circuit starts (LED 1 flashes in green/yellow). Following a successful pre-charge the rectifier is started. Thus, the system is in rectifier operation and LED 1 lights up in green, the LED`s 2 and 4 light in yellow.
7. Close all the battery breakers (Q100) simultaneously or immediately one after another (within 5 seconds). LED 3 glow green.
8. To start the inverters, press key on each UPS unit again. During the starting process, LED 4 flashes green-yellow. When the unit is in inverter ready, the LED’s 4 yellow and LED 1 and 2 glow green.
9. Now press key on any UPS unit again. The inverter output static switch of the inverter (V060) is switched on. LED`s 1, 4 and 6 glow green.
10. The system is now in mains operation mode. (Indication in the display – UPS mains mode)
11. Press to clear possible alarms from the start-up sequence.
12. Close Output Load Switch (Q700) for supply load