Emerson 115-600V Benutzerhandbuch

To de-energize the APM: 
1. On the UPS control panel, press and hold the INVERTER OFF button for 2 seconds. 
2. Open all battery circuit breakers(s) including internal battery breaker (if applicable).

3. Open the UPS output circuit breaker(s). 
4. Open the UPS input circuit breaker and bypass circuit breaker (dual input systems only). 
5. Allow 5 minutes for all DC circuits and capacitors to fully discharge. 
6. Use a digital multimeter to verify there is no AC or DC voltage present at the UPS input, output 

and bypass bus bars. 

The procedure below is used to switch the system from parallel to single UPS operation.

Risk of improper switching. Can cause damage to connected load.

This procedure will remove power from the critical bus. 

Performing the next step will shut down the critical load. 

Field-Supplied Wiring

Notes
1. Install in accordance with national and local electrical codes.
2. A neutral is required from the system AC input source.

 A full-capacity neutral conductor and grounding conductors

    are recommended.
3. UPS system input and output cables must be run in separate conduits.
4. Control wiring must be run in separate conduits.
5. Customer must supply shunt trip breaker with 120V coil.

UAM01000
Rev. 2

* System AC Input

4-Wire + GRD

See Note 5

AC Output

208V

4-Wire + GRD

* External Overcurrent
  Protection by Others

Static Bypass

Output
Busbar

UPS Cabinet

Battery