American Power Conversion 200/208 V, 10-30 KVA manual Operation Modes

Page 13

Operation Modes

In a stand-alone installation, the UPS has four different operating modes. If the installation includes a Maintenance Bypass Panel, bypass mode and test mode will also be available.

Normal operation

During normal operation, the UPS converts utility power to conditioned power for the connected load.

Battery operation

During battery operation, the UPS provides power to the connected load from its internal and (if applicable) external batteries for a finite period. The UPS transfers to battery operation if the supply of utility power fails, or is outside pre-defined limits.

Bypass operation (or static bypass operation) utility

Static bypass operation can either be obtained by user request or automatically, as the UPS will switch into bypass operation if both the normal and battery operation modes are unavailable. During static bypass operation, the utility power is sent through internal Radio Frequency Interference (RFI) filters to the connected load, bypassing the internal power converters. The UPS transfers to bypass operation following a command received via the user display, or after a short or heavy overload on the output of the UPS. Battery back-up is not available in bypass operation.

Mechanical bypass

In mechanical bypass, utility power is sent directly to the connected load through a mechanical breaker, bypassing all internal UPS functions and filters. Mechanical bypass is obtained by the operation of the mechanical bypass breaker lever located behind the front cover. Mechanical bypass is a feature designed to keep the load supplied with utility power at maintenance of the power sections of the UPS. All major maintenance operations can be performed with the UPS running in mechanical bypass, and with the load being supplied directly with unconditioned utility power.

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.

990-2359A Smart-UPS® VT 10-30kVA, 200/208V and XR Battery Enclosure Operation Guide

5

Image 13
Contents Operation Page Smart-UPSVT and XR Battery Enclosure10-30 kVA 200/208 Page Contents Appendix Options Page Symbols used in this guide General Safety InstructionsEnvironmental symbols General safetySafety General Safety Instructions Introduction Operation352mm Enclosures Smart-UPS VT Family Range523mm Enclosures Operation Modes Introduction DisplayStatus NavigationControl functions Basic display navigation principlesStatus views Select YES, Turn Load OffDate Clock set-upLogging TimeDisplay setup Alarm thresholdDiagnostics screen From the Display Setup Menu, select ContrastMain Menu Display messages Display Messages/TroubleshootingOperation Display Messages/Troubleshooting Display Message Meaning Corrective Action Front Panel removal Remove Battery Compartment Cover Battery Compartment Cover installation Front Panel installation Total-Power-Off Procedure Power application Restart ProcedureEnter Voltage confirmationMechanical Bypass Lever Mechanical BypassTurn into mechanical bypass Page Network Management Card with Environmental Monitor Network Management Card replacementGeneral safety prior to module replacement Battery ReplacementBattery Module Removal and installation of Battery Lock if applicable How to install a Battery Module Battery Module removal  Orderable parts How to Obtain Replacement PartsUPS Components and Options AppendixType label Serial number24kg Part number codingStabilizing Bracket User interface Foot print Options Extended Run Battery Enclosure XR Battery EnclosurePart number for Battery Module Part numbers for XR Battery EnclosuresAppendix Options Appendix Options Page 990-2359A