Caution – GE Industrial Solutions EntelliGuard G User Manual
Page 7
DEH-41304C
EntelliGuard® G Circuit Breaker
13 March 14
Section 1 – General Information
©2012 General Electric All Rights Reserved
7
SECTION 1 – GENERAL INFORMATION
STORAGE
CAUTION
PRODUCT DAMAGE
Do not store circuit breaker in corrosive
environments above LC1 (sea salt mist) and G1 as
per ANSI/ISA-S71.04-1985.
Ensure circuit breakers and cassettes are stored in a
clean, dry location in their original packaging.
Failure to comply with these instructions may result
in product damage.
INTRODUCTION
Quality Assurance
All EntelliGuard G circuit breakers have been designed
and manufactured to the highest technical standards.
Strict procedures ensure first class product quality.
Options Check Sheet
Each circuit breaker comes with a detailed factory-
assembled side label that lists all optional features
included on both the circuit breaker and on the trip unit.
Product Serial Number
Please have the serial number available when
communicating about the circuit breaker. Each circuit
breaker has a unique serial number located on the left
side (viewed from front) of the front fascia.
Measurement Units
All data in this document is specified in conventional
metric/SI units.
All internal/external accessory and external
cable/bus bar connections are metric for both IEC
and UL/ANSI versions.
PRODUCT DESCRIPTION
The EntelliGuard G Circuit Breaker is suitable for
application on power systems up to 1000 Vac 50/60 Hz
systems and up to 750 Vdc as a main/source breaker,
feeder breaker, bus coupler or tie breaker. See Section 2
for complete product specifications.
Figure 1.1 shows a front view of the EntelliGuard G. The
indicated features are referenced in this document.
HAND TOOLS NEEDED FOR INSTALLATION
Table 1.1 provides a list of the hand tools required to
install, operate and maintain the EntelliGuard G Circuit
Breaker.
Table 1.1. Required Hand Tools
Tool Name
Function
Cluster pliers (two pairs, each with a different
gap, are supplied under Cat. No. GUNI)
To remove primary contacts for inspection and maintenance.
Screwdriver (8 mm)
To operate racking shutter drive.
Allen wrench (5 mm)
To remove arc chutes for inspection and maintenance.
To remove or adjust fixed and moving arcing contacts.
To remove mechanism.
Allen wrench key (4 mm)
To remove motor and gearbox mounting screws.
Metric feeler gauges
To check and adjust arcing contact gaps.
Pozidrive terminal screwdriver
To remove mechanical and electronic component mounting screws.
To connect wiring to secondary isolating contact terminals.
Pozidrive screwdriver (#1 and #3)
To remove front cover mounting screws.
To remove Rogowski coil and Power current transformer cover plate at the
rear of the circuit breaker moving portion.
Full Set of Metric Hex Allen Wrenches and
Socket Set
To remove PMU base, auxiliary switch assembly, etc.