GE Industrial Solutions EntelliGuard G Arc Chute User Manual

1

Envelope

Size

Catalog #

Envelope 1

G20HCHT

Envelope 2

G40MCHT

Envelope 3

G64LCHT

Envelope 3-

200kA

G64WCHT

EntelliGuard ® G Circuit Breaker
Accessories

Arc Chute Assembly

WARNING: Before installing any accessories, turn the
breaker OFF, disconnect it from all voltage sources,
and discharge the closing spings.

AVERTISSEMENT: Avant d’installer tout accessoire,

mettre le disjoncteur en position OFF, le déconnecter

de toute tension d’alimentation , et décharger les
resorts d’armement

DEH-41389 Installation Instructions

.

Arc Chute:

Arc chutes are supplied with the Entelliguard
breaker. In cases where it needs the field
replacement, they are supplied as spares.

Figure A Figure B

Arc chamber assembly removal & inspection:

1 Turn the breaker off and discharge the

closing springs by depressing the OFF and
ON buttons in the sequence OFF-ON-OFF.
Verify that the breaker OFF-ON indicator
shows OFF on a green background and
that the charge indicator shows
DISCHARGE on a white background. If
installing in a draw-out type breaker
remove breaker from adaptor (cassette)
before continuing.

2 The breaker should be safely isolated and

fully removed from the cassette (for
drawout breaker)

3 Loosen the M6 mounting screws of arc

chamber to the housings as shown in fig
A

4 Gently lift the Arc chamber assembly as

shown in fig B.

5 Inspect the arc plates and sides of the

moldings for signs of wear or damage
and replace if necessary.

6 Install the arc chamber assembly by

tightening the mounting screws to torque
of 8-10 Nm (5.9 – 7.4 ft-lbs)

Arc chamber assembly removal & inspection for
Fr-3 200kA:

1 Follow Step 1 and 2
2 Slide out ITEM No 1 and loosen six numbers

of M6 mounting screws of arc chamber to
the housing as shown in figure C

3 Gently lift the Arc chamber assembly as

shown in fig B.

2

4 Inspect the arc plates and sides of the

moldings for signs of wear or damage
and replace if necessary.

5 Install the arc chamber assembly by

tightening the mounting screws to
torque of 8-10 Nm (5.9 – 7.4 ft-lbs)

6 Slide in the slider back to original

position

Figure C