Guide Specification – 3-Phase Static Uninterruptible Power Supply

10TOSHIBA DISTRIBUTION CABNET (TDC) (OPTION)

The manufacturer can optionally provide a matching TDC for the UPS.

The TDC can include a step-down, 480/208/120 V transformer in a matching NEMA1 cabinet.

The TDC can include a three-breaker MBS with a slidebar interlock. Interlock keys and Solenoid Key-Retractable Unit (SKRU) can be provided.

The TDC can include up to eight 225 A sub-feed breakers. The TDC can include up to two 42-pole distribution panels.

11MAINTENANCE BYPASS PANEL (OPTION)

The manufacturer can optionally provide a MBS (Maintenance Bypass Panel) for the UPS.

11.1Site Installation

The MBS can be available in either a wall mount or floor mount configuration.

11.2Electrical Configuration

The MBS can be available in two, three, or four breaker configurations.

11.3Mechanical Interlock

The MBS can have the option for a two-kirk-key interlock system.

11.4External Maintenance Bypass:

A manually operated maintenance bypass panel can be provided to bypass the power feeding the critical load from inverter to a static switch panel without causing any power interruption.

Bypass input breaker can supply input power to the UPS module static bypass input. If the system design calls for separate UPS and bypass inputs, a bypass input breaker can be installed on each input.

UPS maintenance bypass breaker can allow power flow to the load when the UPS is bypassed. This can be a normally open circuit breaker.

The UPS module output can feed the UPS output isolation breaker.

Optionally, the two input bypass breaker can be used to feed both the UPS converter input and the UPS bypass input.

12AUXILIARY TRANSFORMER CABINETS (OPTION)

The UPS manufacturer can provide optional Auxiliary Transformer Cabinets (ATC) for stepping the UPS output voltage down to service load voltages.

13POWER DISTRIBUTION UNITS (OPTION)

The UPS manufacturer shall provide optional PDUs (Power Distribution Units) for stepping the UPS output voltage down to service load voltages. The PDUs can be provided in either front- access cabinet or Rack-mount style.

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Toshiba G9000 Toshiba Distribution Cabnet TDC Option, Maintenance Bypass Panel Option, Power Distribution Units Option