GE Industrial Solutions ProTrip Conversion Kits LA-600, LA-800, and LA-1600 - Manual (Page 4)

4
SECTION 1. GENERAL INFORMATION
GE Conversion Kit installation is straightforward,
but does require careful workmanship and attention
to these instructions. Familiarity with the breaker is
highly desirable. Then general approach is to first
remove the existing trip devices from the breaker,
then install the ProTrip components. Following this
procedure, the converted breaker is performance
tested before it is returned to service.
The majority of trip unit kit installations do not
require any customized assembly work. However,
some installations may involve unusual mounting
conditions or accessory combinations that require
minor modifications and/or relocation of compo-
nents. In most instances, this supplementary work
can be done on site.
In preparation for the conversion, the installer
should verify that the appropriate current sensors
and trip unit have been furnished. Whenever a
ProTrip kit is installed on a breaker with a four-wire
system, an associated neutral sensor (CT) is
required for separate mounting in the equipment.
Ensure that retrofitted breakers are applied within
their short-circuit ratings.
Note that all ProTrip trip units supplied with con-
version kits are equipped with long-time, short-
time, instantaneous, and defeatable ground fault
(LSIGX) trip functions. The installer should be aware
of how these functions will affect his application
before installing the conversion kit.
As a service-related consideration, the installation
of a ProTrip kit provides an excellent opportunity to
perform normal maintenance on the breaker, par-
ticularly when the front and back frames are sepa-
rated. Such procedures are described in the instal-
lation and maintenance manuals supplied with the
breaker and equipment.
SECTION 2. BEFORE INSTALLATION
Before starting any work, turn off and lock out all
power sources leading to the breaker, both primary
and secondary. Remove the breaker to a clean, well-
lighted work area.
WARNING: Low-voltage power circuit breakers use
high-speed, stored-energy spring operating
mechanisms. The breakers and their enclosures
contain interlocks and safety features intended to
provide safe, proper operating sequences. For
maximum personnel protection during installation,
operation, and maintenance of these breakers, the
following procedures must be followed. Failure to
follow these procedures may result in personal
injury or property damage.
• Only qualified persons, as defined in the
National Electrical Code, who are familiar with
the installation and maintenance of low-
voltage power circuit breakers and switchgear
assemblies, should perform any work on these
breakers.
• Completely read and understand all instruc-
tions before attempting any breaker installa-
tion, operation, maintenance, or modification.
• Turn off and lock out the power source feeding
the breaker before attempting any installation,
maintenance, or modification. Follow all lock-
out and tag-out rules of the National Electrical
Code and all other applicable codes.
• Do not work on a closed breaker or a breaker
with the closing springs charged. Trip a
CLOSED breaker and be sure the stored-energy
springs are discharged. This removes the
possibility that the breaker may trip OPEN or
the closing springs discharge, which could
cause injury.
• Trip the breaker OPEN , then remove the
breaker to a well-lighted work area before
beginning work.
• Do not perform any maintenance that includes
breaker charging, closing, tripping, or any other
function that could cause significant movement
of a draw-out breaker while it is on the draw-
out extension rails.
• Do not leave the breaker in an intermediate
position in the switchgear compartment.
Always leave it in the CONNECTED , TEST , or
DISCONNECTED position. Failure to do so
could lead to improper positioning of the
breaker and flashback.