Emerson 200I/48-NT5C05C user manual Connecting ac to the rectifiers

24Installation

3.5.1.Securing the dc output terminals to the busbars in a 1200 A cabinet

For cabinet applications, no dc cabling is required; the output terminals of the rectifier are connected directly to the busbars.

Procedure 3 - Securing the dc output terminals to the busbars of the cabinet

Step Action

1Connect the BAT GRD output terminal of the rectifier to the BR busbar, and the –48 V output terminal of the rectifier to the –48 V busbar located at the rear of the cabinet.

2Tighten the bolts by applying a torque of 6.5 ± 0.5 ft-lbs ( 8.5 ±

0.5N-m ).

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3.5.2.Running and connecting the dc between busbars and a rectifier

For frame applications, use terminal lug A0361762, supplied with the unit, and no. 110 ( 4/0 ) metric cable.

Procedure 4 - Typical dc cabling in a frame application

Step Action

1Connect the BAT GRD output terminal of the rectifier to the CHG GRD busbar of the power plant. Connect the –48 V output terminal of the rectifier to the CHG / DISCH BAT busbar of the power plant ( see Figure 5 ).

2Apply a torque of 6.5 ± 0.5 ft-lbs ( 8.5 ± 0.5 N-m ) on the bolts securing the lugs to the rectifier terminals.

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3.6.Connecting ac to the rectifiers

WARNING

Electrical connections should meet standards

The electrical installation must be carried out by qualified personnel and in accordance with local electrical codes.

UM5C05C P0745680 Standard 6.00 October 2001 Emerson Energy Systems