Figure 6. 93T UPS wiring diagram
1. Bypass supply (230 V, 50 Hz, 3 φ,
4 wires)
2. Single feed only
3. Main supply (230 V, 50 Hz, 3 φ,
4 wires)
4. Protective earthing
5. Maintenance bypass switch
6. Bypass switch
7. Bypass fuse
8. Backfeed contactor
9. Neutral switch
10. Input switch
11. Input relay
12. Rectifier
13. Battery relay
14. Battery input
15. Battery breaker
16. Internal battery
17. Battery converter
18. Inverter
19. Static bypass
20. Output switch
21. Output relay
22. Output to load (230 V, 50 Hz, 3 φ,
4 wires)
If the AC power supply is interrupted or exceeds the technical parameters provided in Chapter
9.1 About
technical data, the UPS uses the standby battery to supply power to the load. The power supply from the
battery continues for a specified period of time or until the AC power supply becomes available again. If
there is a long-term interruption of the power supply, the UPS allows switching to another power system,
such as a generator, or shuts down the loads in sequence.
33..33 UUPPSS ooppeerraattiinngg mmooddeess
The table shows the UPS operating modes.
EATON 93T USER’S AND INSTALLATION GUIDE 614-40270
-
December 2023 www.eaton.eu 2200
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