Powerware Ferrups FE/QFE 500VA - Manual (Page 74)

Phase Check
68 Powerware ® FERRUPS FE/QFE UPS (500 VA–18 kVA) Installation Guide
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Rev A www.powerware.com
10. Measure the AC voltage between the following points on the
terminal strip. This reading must be no more than 1 Vac; if it is,
call your service representative.
Internal Bypass Switch
N (AC to UPS Load) to
N (AC Line Input)
Vac
External Bypass Switch (BPE-01)
5 to 8 Vac
External Bypass Switch (BPE-02, BPE-04, or BPE-05)
6 to 10* Vac
8 to 12** Vac
*60 Hz, 208 or 240V only.
**60 Hz, 120V or 50 Hz, 220/230/240V.
11. Turn the bypass switch to the LINE position. Measure the
voltage to the protected equipment (at the load distribution
panel or the UPS-protected receptacles for your equipment) and
verify that it is correct.
12. Turn the bypass switch to the UPS position and verify the
voltage to the protected equipment is still correct.
13. Turn the bypass switch back to the LINE position.
14. Reinstall the bypass switch and UPS front cover panels.
15. Turn the UPS ON/OFF switch to the OFF position.