APC Smart-UPS VT Installation Manual download pdf (Page 33)

Smart-UPS

VT Maintenance Bypass Panel w Power Distribution, 10-30kVA, 208V - 990-4199B 27

Installing Panel Board Breakers

This section describes how to install breakers to the MBP’s 42-position panel board (if included).

1. Remove the top rear panel from the MBP enclosure. Refer to “Rear panel removal” on page 15.

2. Remove the decorative front and the front panel from the MBP enclosure. Refer to “Decorative

front removal” on page 13 and “Front panel removal” on page 14.

3. Select the next available breaker position(s) on the panel board, and then snap the new 1-, 2-, or

3-pole breaker into the appropriate guard rail.

4. Make the bolt-on connections (those nearer the center of the panel board). Use a standard

(flathead) screwdriver and torque to 24in-lbs [3Nm].

5. Remove the corresponding plastic blanking plate(s) located directly in front of the newly

installed breaker.

Electrical

Hazard

WARNING!

Before installing breakers, make sure ALL MBP switches are in the OFF position.

From normal operation, first switch Q2 OFF, and then switch Q1 OFF.

Note

The panel board supports Square D

bolt-on circuit breakers. For a listing of

recommended breakers, refer to “Panel board breakers” on page 12.

The top pole of a 3-pole breaker must always be placed in an L1 position on the

panel board. Counting down from the top, these are positions 1, 7, 13, 19, etc. on the

left side of the board and positions 2, 8, 14, 20, etc. on the right side of the board.

Note

After installation, panel board breakers can be accessed by simply opening the

panel board hinged door. Use the front door key to open this door.

3-pole Breaker

(positions 1, 3, 5)

3-pole Breaker

(positions 2, 4, 6)

Bolt-on

Connections

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 43 44

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APC Smart-UPS VT Installation Manual Page 33