Operating The Maintenance Bypass Switch; Putting The Ups In Maintenance Bypass Mode; Figure 137: Normal Position Of The Maint. Bypass Switches - Gamatronic Power+ User Manual

Gamatronic Electronic Industries Ltd.
12. O
PERATING THE MAINTENANCE BYPASS SWITCH
Maintenance bypass is an optional feature. In maintenance bypass mode, the UPS output
terminals continue to supply power to the load, but the interior of the UPS is isolated from all
power flows. This enables a technician to safely work on the UPS (after turning off the battery
circuit breaker or disconnecting the battery fuse) without any interruption of power to the load.
12.1

Putting the UPS in maintenance bypass mode

In normal operation, the maintenance bypass switches are positioned as shown in Figure 137.
To put the system in maintenance bypass mode:
1. On the system's front panel, press the INV/BYP button twice to put the UPS in bypass
mode.
Then, using the three maintenance bypass switches on the UPS rear:
2. Turn ON the maintenance bypass switch (the middle switch).
3. Turn OFF the OUTPUT switch (the right-side switch).
4. Turn OFF the INPUT switch (the left-side switch).
The switches are now positioned as shown in Figure 138
POWER + RM 50
VA, N.Am. Std. – User Guide, Release 1.4
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Figure 137: Normal position of the maint. bypass switches

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