GE Industrial Solutions EntelliGuard G Clusters User Manual

Clusters:
These are the main isolating contacts which are fitted to the rear terminals on the moving portion of the with drawable unit As part of standard inspection and maintenance procedures, cluster contacts have been designed to be easily and quickly removed and replaced using cluster pliers. These clusters are mounted horizontally and vertically thru cluster pads for different envelope sizes. The slot is provided on the terminals for locking the clusters. For higher current and short circuit ratings the clusters are assembled parallel.
Table 1. Cluster Catalog and Ratings
Envelope
Size
Envelope 1
Envelope 2
Envelope 3
Catalog #
G20NCLS G20MCLS
G32ECLS G64LCLS
Current
Rating 2000A 2000A 3200A 6000A
DEH-41460 Installation Instructions
EntelliGuard ® G Circuit Breaker Accessories
Clusters:
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
Removal of Cluster assembly using cluster pliers:
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/panel.
3. Inspect the rear cluster contacts for signs
of overheating and wear and replace if necessary.
4. Hold & position the cluster plier jaws on
the cluster fingers of the cluster finger assembly at the rear ends.
5. Press the extended handles of the cluster
plier assembly such that the cluster assembly becomes loose on the rear terminals.
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6. Slide outwards the cluster assembly over
the rear terminals.
Installing Cluster assembly using cluster pliers:
1. Hold & position the cluster plier jaws on
the cluster fingers of the cluster finger assembly at the rear ends
2. Press the extended handle of the cluster
plier assembly such that the cluster assembly opens at the other end.
These instructions do not purport to cover all details or variations in equipment nor, to provide contingency to be met in connection with installation, operation, or maintenance. Should further information be desired, or should particular problems arise which are not covered sufficiently for the purchaser’s purposes, the matter should be referred to GE.
GE
41 Woodford Ave, Plainville, CT 06062 www.geelectrical.com
© 2009 General Electric Company
3. Slide the cluster assembly along with the
cluster pliers on to the rear terminals.
4. Release the extended handles gently so
that the clusters properly seats on the grooves of rear terminal
5. Assemble the breaker in the cassette
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