Maintenance bypass switch wiring diagram

For MBS without Separate Bypass. Inputs, the UPS Rectifier Input terminal is tied to the UPS Bypass Input terminal. For further clarification refer to the relevant wiring diagram in Appendix A. This type of switch provides continuity of . The MBS consists of three switches and failure to understand the correct sequence may drop the critical .

This equipment generates, uses, and can radiate radio frequency energy an if not installed and used in accordance with the instruction manual , may cause harmful .

Maintenance Bypass Switch that must be followed during installation, operation and.

A schematic diagram of the MBPS is included in this manual. A static bypass is in almost all cases part of the UPS internal circuitry and may be invoked manually using an external switch. In larger UPS, it will probably synchronise the UPS output with the mains cycle . Single or Three Phase Switches. NOTE 3: The selections for color of wires should be followed by the local electrical laws and regulations.

Remove the terminal block cover on the rear panel of the module. An optional add-on for the Protect B. It also features an additional setting to enable UPS testing. The switch is equipped with individually protected power . Disconnect switch with pass- through. Torque the terminal blocks to N-m (2in-lbs).

Figure — Typical MBS wiring diagrams. This manual contains installation and operation procedures for the Maintenance. Bold type highlights important concepts in discussions, key terms in procedures, and menu. Wiring diagram of the UPS and the external transformer option.

With optional limited charging feature at low input and high kW loa see User Settings). The power cable terminals are located in the back of the UPS unit. An electrically controlled interlock maintenance bypass breaker (MBP) transfers the load from the UPS output to the bypass input . The UPS should be connected in accordance with the wiring diagram.

Five-wire installation of the UPS system 1– 1kVA without MBS. Wire the maintenance bypass auxiliary contacts below the maintenance bypass switch and terminate to the maintenance bypass wires in the Tie Cabinet. The maintenance bypass switch (MBS) shall be mounted in back of the UPS battery. A readily accessible disconnect device shall be incorporated in the building installation wiring as shown in diagrams. Access to the power terminals, auxiliary terminals blocks and power switches is from the front.

A Maintenence Bypass Switch allows for maintenance of your UPS management systems while not losing power to your UPS protected equipment.