GE Industrial Solutions EntelliGuard TU Trip Units - Manual (Page 73)

DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Installation
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SECTION 13. INSTALLATION
DANGER
ELECTROCUTION
• Ensure the circuit breaker has been tripped, indicating
OFF and that applicable lock-out/tag-out requirements
are met and followed
• Ensure the main springs are fully discharged
• Do not touch the circuit breaker’s isolating contacts
during lifting
Failure to comply with these instructions could result
in death or serious injury.
WARNING
IMPROPER INSTALLATION, OPERATION, SERVICE, AND
MAINTENANCE
• Ensure only qualified personnel install, operate, service
and maintain all electrical equipment
• Do not perform any maintenance, including breaker
charging, closing, tripping, or any other function that
could cause significant movement of circuit breaker
while it is on the draw-out extension rails
• Ensure circuit breaker is always left in the CONNECTED,
TEST or DISCONNECTED position to avoid
mispositioning of the breaker and flashback
Failure to comply with these instructions could result
in death or serious injury.
WARNING
FALLING OBJECT
• Ensure lifting equipment has capability for device being
lifted
• Wear hard hat, gloves and safety shoes
Failure to comply with these instructions could result
in death or serious injury.
CAUTION
Product Damage
• Contact GE for rewiring information before using the
EntelliGuard TU trip unit to replace the Micro-Versa PM
trip unit. This is because connecting the MicroVersa’s
24 V (commnet system) directly to the EntelliGuard
(Modbus system) will damage the EntelliGuard’s RS485
chip
• Ensure circuit breaker and its accessories are always
used within their designated ratings
• Ensure the correct trip unit is paired with the correct
circuit breaker
• Do not use excessive force when installing a trip unit.
• Do not allow circuit breaker to hit a hard surface while
handling.
• Do not drag or slide circuit breaker across a hard or
rough surface.
Failure to comply with these instructions may result in
product damage.
TRIP UNIT REMOVAL AND REPLACEMENT
Power Break I, Power Break II, WavePro and AKR Trip Units
have rejection pins, installed on the rear of these trip units,
to prevent installation of an incorrect trip unit into a
breaker.
Replacement of a trip unit always requires repeating the
setup procedures
Power Break I and Power Break II Insulated Case Circuit
Breakers
The trip unit procedures for Power Break I and Power Break
II circuit breakers are very similar and are outlined below.
The EntelliGuard TU trip unit for a Power Break I is different
than that for a Power Break II (see SECTION 1: “General
Information”). Ensure the correct trip unit is used.
Trip Unit Removal
1. Loosen the four #8-32 screws on the circuit breaker
trim-plate assembly and remove the trim plate.
2. Loosen the four #10-32 screws at the corner of the
breaker cover. Remove the cover from the breaker face.
3. Pull the trip unit locking lever to the right, then hold the
trip unit near the battery cover and lift it straight out of
the circuit breaker.