APC AIS 3000 Installation Manual download pdf (Page 54)

46 AIS® 3000 10-40kVA, 400V, Site Preparation and Installation Manual – 990-2258

Wiring Verification Procedure

Use following procedure to verify that the UPS has been wired properly:

Do not connect batteries in the UPS.



1. If your installation includes an XR Enclosure, make sure that the DC breaker (if

available) is in the OFF position and that both 125A fuses are removed from the

XR Enclosure.



2. Check that the power wiring is torqued to 45 lbf

in/5Nm.



3. If your installation includes an XR Enclosure, remount the 125A fuses in the XR

Enclosure and check that the DC breaker (if available) on the XR Enclosure is in

the ON position.



4. Apply mains power to the system input and measure the voltage at the input

terminal block. Record voltages between:

Mains Input:

L1 and N: _________ L2 and N: ________ L3 and N: _______

Bypass Input (for dual mains installations):

L1 and N: _________ L2 and N: ________ L3 and N: _______

Measured voltage must be between 175 and 274. If not, STOP! Verify correct wiring

(correct location of N) from the power source to the input wiring connections.



5. Check that the display is powered up.



6. Select the Status Menu on the display, and check that all input voltages are present.



7. Verify L1, L2, L3 clockwise phase rotation using a phase-rotation meter.



8. Test the EPO switch. The system should shut down completely. If not, check the

connections and the EPO switch to ensure that they are installed and functioning

correctly. For installations with XR Battery Enclosures, the DC disconnect should

trip to the OFF position at the EPO test (if applicable).



9. Successful completion of steps 1 through 5 indicates that the UPS wiring is

correctly installed and functioning correctly. Turn off breakers and switches and

shut down mains power to the system input. See Total-Power-Off Procedure.

10. Please leave a wiring diagram on site for service / technical support personnel.

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APC AIS 3000 Installation Manual Page 54