Powerware Ferrups FE/QFE 500VA - Manual (Page 73)

Phase Check
67 Powerware ® FERRUPS FE/QFE UPS (500 VA–18 kVA) Installation Guide
:
Rev A www.powerware.com
External Bypass Switch
BPE-01
AC from UPS
Output Measurement AC Line Input Measurement
5 to 6 Vac 8 to 9 Vac
BPE-02, BPE-04, or BPE-05
AC from UPS
Output Measurement AC Line Input Measurement
7 to 8* Vac 11 to 12 Vac
6 to 7 Vac 10 to 11 Vac
6 to 8* Vac 10 to 12 Vac
*60 Hz, 208 or 240V only.
9. If the bypass switch is a Break-Before-Make type, skip this step
and proceed to Step 10.
If the bypass switch is a Make-Before-Break type, verify that the
AC voltages from the UPS and the AC line input are in phase.
Measure the voltage between the following points on the
terminal strip. These measurements must be no more than
100 Vac; if they are, call your service representative.
Internal Bypass Switch
X1 to L1 Vac
X2 to L2* Vac
*60 Hz, 208 or 240V only.
External Bypass Switch (BPE-01)
6 to 9 Vac
External Bypass Switch (BPE-02, BPE-04, or BPE-05)
7 to 11 Vac
8 to 12* Vac
*60 Hz, 208 or 240V only.