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Operation – Operation Modes
990-1599B Smart-UPS® VT 10-30 kVA, 208/220 V and XR Battery Enclosure Operation Manual 7
Wrap-around maintenance bypass
The UPS can be connected to an external Maintenance Bypass Panel. When activated, this panel
bypasses the entire UPS Enclosure (only possible with an optional APC Maintenance Bypass Panel),
feeding utility power directly to the load. An activated wrap-around Maintenance Bypass Panel
completely isolates the UPS and allows maintenance to be performed - including a replacement of the
entire UPS.