GE Industrial Solutions ProTrip Conversion Kits DB-25, DBL-25, DB-50, DBL-50 - Manual (Page 4)

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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 components. 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 conversion
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, particularly when
the front and back frames are separated. Such
procedures are described in the installation 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 instructions
before attempting any breaker installation,
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 an OPEN breaker
and be sure the stored-energy springs are
discharged, thus removing the possibility that the
breaker may trip OPEN or the closing springs
discharge and 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.