GE Industrial Solutions AMC2GM, AMC3GM User Manual

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WARNING: Danger of electrical shock or injury.

OFF

Turn switchboard before workin

ment or removing any component. Do

e not remove circuit other component until the power is turned OFF.

General

These instructions apply to the following catalog numbers:

• Circuit breaker modules AMC2GM and AMC3GM

• Circuit breaker frames SGDA, SGHA, SGLA and SGPA

ower ahead of the panelboard or

inside the

rotective devices or an

GEH5674 Installation Instructions R03

Spectra Series™ Power Panelboards

Circuit Breakers and Modules

A & C Phase As Received

A & B Phase

Installation

1. Phase balancing for two-pole devices on three-phase

systems. Reposition the bus clip assembly from A or C

phase to B phase as shown in Figures 1 and 2. Remove the screws and the bus clip assembly. Move the bus clip to the B phase location. Fasten the bus clip assembly with the screws tightened to 27–32 in-lb.

2. Install the circuit breaker.

a. Main devices (lugs only on ON side of circuit

breaker). Place the OFF side of the breaker over the

stud posts, as shown in Figure 3. Secure the breaker OFF side to the module with hex-head Belleville washers and tighten to 90–110 in-lb. Secure the breaker ON side to the module with round-head screws and flat washers and tighten to 40–50 in-lb.

b. Branch devices (lugs only on OFF side of the

breaker). Place the ON side of the breaker over the

stud posts, as shown in Figure 3. Secure the breaker ON side to the module with head-head Belleville washers and tighten to 90–110 in-lb. Secure the breaker OFF side to the module with round-head screws and flat washers and tighten to 40–50 in-lb.

A or C Phase

Location

B Phase

Location

screws and

A or C Phase

Location

B & C Phase

Figure 2. Phase diagram showing positions of bus clips.

Round-Head

Screw & Flat

Washer

Hex-Head Screw

& Belleville

Washer

Stud

Post

Latch

Screw

Latch

Figure 3. Installing the breaker on the module.

Figure 1. Bus clip locations on the breaker module.

3. Install the breaker module. Fully retract the latches

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and hook one side of the breaker module to the interior rail, as shown in Figure 4. Release the latch. Pivot the module onto the bus bars and engage the second latch. Release the latch. Tighten the latch screws to 25 in-lb, as shown in Figure 5.

Latch

Screw

Latch

Screw

Figure 5. Securing the module to the interior.

4. Wire the circuits. Refer to the label on the circuit breaker for the proper tightening torque.

5. Filler plate kits. Install filler plate kit AFP4SGS on the module.

Figure 4. Positioning the breaker module on the interior rail.

Attention – Procedure for Aluminum Terminations

1. Strip the insulation, being careful to not nick the wire.

2. Clean the wire strands with a wire brush.

3. Thoroughly coat the stripped conductor with a

suitable antioxidant compound, such as ALNOX or PENETROX A13.

4. Insert the conductor and tighten the connector screw to the torque indicated on the rating label.

These instructions do not cover all details or variations in e ma

be met in connection with installation, operation, or maintenance. Should further information be desired or should

articular problems arise that are not covered sufficiently for the purchaser’s purposes, the matter should be referred to the

GE Company.

ment nor do they provide for every possible contingency that

GE Industrial Systems

General Electric Company 41 Woodford Ave., Plainville, CT 06062