GE TMQV User manual

Contents
Description Page
Introduction . . . ..........................2
Installation . . . ......................... . . 2
Manual Operation ...................... . . 4
Inspection and Field Testing ............... . 4
Effective November 2016DEH41188 Installation Instrucitons
Installation Instructions for TMQV
Circuit Breakers and Molded Case Switches

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DEH41188 Installation Instructions
Effective November 2016
Installation Instructions for TMQV
Circuit Breakers and Molded Case Switches
WARNING
DO NOT ATTEMPT TO INSTALL OR PERFORM MAINTENANCE ON EQUIP-
MENT WHILE IT IS ENERGIZED. DEATH, SEVERE PERSONAL INJURY OR
SUBSTANTIAL PROPERTY DAMAGE CAN RESULT FROM CONTACT WITH
ENERGIZED EQUIPMENT. ALWAYS VERIFY THAT NO VOLTAGE IS PRESENT
BEFORE PROCEEDING WITH THE TASK, AND ALWAYS FOLLOWGENERALLY
ACCEPTED SAFETY PROCEDURES.
GE IS NOT LIABLE FOR THE MISAPPLICATION OR MISINSTALLATION
OF ITS PRODUCTS.
The user is cautioned to observe all recommendations, warnings
and cautions relating to the safety of personnel and equipment, as
well as all general and local health and safety laws, codes, and pro-
cedures .
1. Introduction
Figure 1. TMQV Circuit Breaker and Molded Case Switches
The circuit breakers (Fig.1) are rated from 60A to 225A continu-
ous current and are available as thermal-magnetic circuit breakers
and molded case switches . (Molded case switches are avail-
able rated at 225A .) Circuit breakers are listed in accordance with
Underwriters Laboratories, Inc. Standard UL489 . Molded case
switches are listed in accordance with UL489 . For this publication,
the term circuit breaker also includes molded case switches and QV
is used to cover all of the circuit breakers and molded case switches
associated with this instruction sheet..
2. Installation
The installation procedure consists of inspecting and mounting the
circuit breaker, connecting and torquing the line and load termina-
tions, and attaching terminal shields or barriers, when supplied . To
install the circuit breaker perform the following steps:
ote :N TMQVV circuit breakers are factory sealed . UL489 requires that internal
accessories be installed at the factory. Where local codes and standards per-
mit and UL listing is not required, internal accessories can be field installed .
Accessory installation should be done before the circuit breaker is mounted
and connected .
Mounting hardware and unmounted terminations (where required)
are supplied in separate packages.
2-1. Make sure that the circuit breaker is suitable for the installation
by comparing nameplate data with system requirements . Inspect
the circuit breaker for completeness and check for damage before
mounting .
WARNING
BEFORE MOUNTING THE CIRCUIT BREAKER IN AN ELECTRICAL SYSTEM,
MAKE SURE THERE IS NO VOLTAGE PRESENT WHERE WORK IS TO BE
PERFORMED. THE VOLTAGES IN ENERGIZED EQUIPMENT CAN CAUSE
INJURY OR DEATH.
2-2. Depending on the equipment configuration, the circuit breaker
can be mounted using different styles of hardware. The following
steps describe how to mount the circuit breaker using standard
hardware. When special hardware is needed (for example, with the
electrical operator), the instruction leaflet describing the accessory
also describes the special mounting arrangements .
ote :N Before mounting the circuit breaker, check if the termination devices
should be installed first . See terminations instructions .
2-3. To mount the circuit breaker, perform the following steps:
a. For individual mounting panels, make sure that mounting panel is
predrilled using bolt drilling plan (Fig . 2). For panelboard mounting,
only load end support mounting holes are required. For deadfront
cover applications make sure panel cover is cut out to correct
escutcheon dimensions (Fig .3).
CAUTION
DO NOT EXCEED CONNECTOR/BUS CAPACITY IN THE APPROVED PANEL
ASSEMBLY .
b. If circuit breaker includes factory installed internal accessories,
make sure accessory wiring can be reached when the circuit
breaker is mounted .
c. Position circuit breaker on mounting surface.
d. Install mounting screws, washers, and nuts. Tighten screws
firmly, but do not exceed 28 pound-inches (3.16 N.m)
TMQV

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DEH41188 Installation Instructions
Effective November 2016
Installation Instructions for TMQV
Circuit Breakers and Molded Case Switches
Figure 2. Circuit Breaker Mounting Bolt Drilling Plans
Figure 3. Circuit Breaker Esutcheon Dimensions
2-4. If an optional terminal end cover is to be installed with the
circuit breaker (usually line end only), it must be positioned before
cable is connected to terminals .
CAUTION
WHEN ALUMINUM CONDUCTORS ARE USED, THE APPLICATION OF
A SUITABLE JOINT COMPOUND IS RECOMMENDED TO REDUCE THE
POSSIBILITY OF TERMINAL OVERHEATING. TERMINAL OVERHEATING CAN
CAUSE NUISANCE TRIPPING AND DAMAGE TO THE CIRCUIT BREAKER.
2-5. After mounting the circuit breaker, line and load terminals and
accessory leads should be connected . (See accessory schematic
diagram on side of circuit breaker.)
ote :N If terminal shield or interphase barriers are to be installed on the circuit
breaker, install them after the terminals are connected .
2913
I
.188 (4.78 mm) Dia. Hole for
Access to Push-to-Trip
Line
End
2.313
(58.75)
2-6. If required, install terminal shield on circuit breaker cover with
mounting screws provided .
2-7. If required, install an interphase barrier by sliding barrier into
dovetail grooves between terminals .
2-8. After the circuit breaker is installed, check all mounting hard-
ware and terminal connecting hardware for correct torque loading.
Torque values for line/load terminals are given in Tables 1, 2, and 3
and on the circuit breaker nameplate .
Table 1. Terminal Types
Terminal
Catalog #
(Not orderable)
Terminal
Body
Material
Screw
Head Type
AWG
Wire
Range
Metric
Wire
Range
Wire
Type
Torque
Value, Lb.
in.(N.m)
3TA225FD Aluminum 3/16 Socket
Hex
#4-4/0 25-95 Cu/Al 120 (13.6)
3TA225CVK Aluminum 5/16 Socket
Hex
#6-300 16-150 Cu/Al 275 (31)
2TA225CVK Aluminum 5/16 Socket
Hex
#6-300 16-150 Cu/Al 275 (31)
3TA100FD Aluminum Slotted #14-1/0 2.5-5.0 Cu/Al See Table 2
3T100FB Steel Slotted #14-1/0 2.5-50 Cu/Al See Table 2
3T150FB Stainless
Steel
Slotted #4-4/0 25-95 Cu
Only
See Table 2
3TA150F3K Aluminum 5/32 Socket
Hex
#14-2 2.5-25 Cu/Al 70 (7.9)
3TA150F6K Aluminum 3/32 Socket
Hex
#14-6 2.5-10 Cu/Al 25 (2.8)
Note: Terminal wire connectors are UL listed for standard wire sizes as defined in UL 486A
and UL486B.
Package of Three
Individual Terminal Identified as TA225FD1
Package of Two
Table 2. Terminal Torque Values for Slotted Head
Metric Wire
Range
Torque Value N.m AWG Wire Range Torque Value,
Lb.-In.
2.5-6 3.96 #14-#10 35
10 4.52 #8 40
16-25 5.09 #6-#4 45
35-95 5.65 #3-4/0 50

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Effective November 2016
Installation Instructions for TMQV
Circuit Breakers and Molded Case Switches
3. Manual Operation
Manual operation of the circuit breaker is controlled by the circuit
breaker handle and the PUSH-TO-TRIP button. The circuit breaker
handle has three indicated positions, two of which are shown on
the cover with raised lettering to indicate ON and OFF. On the slid-
ing handle barrier, ON, OFF, and trip are also shown by a color-coded
strip for each circuit breaker handle position: red for ON, white for
tripped, and green for OFF. On the sliding handle barrier, ON/OFF is
also shown with the international symbols I/0 (See Fig. 4.)
Figure 4. Circuit Breaker Manual Controls.
Circuit Breaker Reset
After tripping, the circuit breaker is reset by moving the circuit break-
er handle to the extreme OFF position.
ote:N In the event of a thermal trip, the circuit breaker cannot be reset until
the thermal element cools.
PUSH-TO-TRIP Button
The PUSH-TO-TRIP button checks the tripping function and is used
to periodically exercise the operating mechanism.
4. Inspection and FieldTesting
TMQV molded case circuit breakers are designed to provide years
of almost maintenance-free operation. The following procedure
describes how to inspect and test a circuit breaker in service.
Inspection
Circuit breakers in service should be inspected periodically. The
inspection should include the following checks 4-1 thru 4-7.
WARNING
BEFORE INSPECTING THE CIRCUIT BREAKER IN AN ELECTRICAL
SYSTEM, MAKE SURE THE CIRCUIT BREAKER IS SWITCHED TO THE OFF
POSITION AND THERE IS NO VOLTAGE PRESENT WHERE WORK IS TO BE
PERFORMED. SPECIAL ATTENTION SHOULD BE PAID TO REVERSE FEED
APPLICATIONS TO ENSURE NO VOLTAGE IS PRESENT. THE VOLTAGES IN
ENERGIZED EQUIPMENT CAN CAUSE INJURY OR DEATH.
CAUTION
MAKE SURE THAT CLEANING AGENTS OR SOLVENTS USED TO CLEAN
THE CIRCUIT BREAKER ARE SUITABLE FOR THE JOB. SOME COMMERCIAL
CLEANING AGENTS WILL DAMAGE THE NAME PLATES OR MOLDED
PARTS.
4-1. Remove dust, dirt, soot, grease, or moisture from the surface
of the circuit breaker using a lint-free dry cloth, brush, or vacuum
cleaner. Do not blow debris into circuit breaker. If contamination is
found, look for the source and eliminate the problem.
4-2. Switch circuit breaker to ON and OFF several times to be sure
that the mechanical linkages are free and do not bind. If mechanical
linkages are not free, replace circuit breaker.
4-3. Press the PUSH-TO-TRIP button to mechanically trip the circuit
breaker. Trip, reset, and switch circuit breaker ON several times. If
mechanism does not reset each time the circuit breaker is tripped,
replace the circuit
4-4. Check base, cover, and operating handle for cracks, chipping,
and discoloration. Circuit breakers should be replaced if cracks or
severe discoloration is found.
4-5. Check terminals and connectors for looseness or signs of over-
heating. Overheating will show as discoloration, melting, or blister-
ing of conductor insulation, or as pitting or melting of conductor sur-
faces due to arcing. If there is no evidence of overheating or loose-
ness, do not disturb or tighten the connections. If there is evidence
of overheating, terminations should be cleaned or replaced. Before
re-energizing the circuit breaker, all terminations and cable should be
refurbished to the condition when originally installed.
4-6. Check circuit breaker mounting hardware.Tighten if necessary.
4-7. Check area where circuit breaker is installed for any safety haz-
ards, including personal safety and fire hazards. Exposure to certain
types of chemicals can cause deterioration of electrical connections.
Field Testing
Any field testing should be done in accordance with applicable
NEMA Standards.
DEH41188 Installation Instructions
GE
41 Woodford Ave.
Plainville, CT 06062
© 2016 General Electric Company
Information provided is subject to change without notice. Please verify all details with GE.
All values are design or typical values when measured under laboratory conditions, and GE makes no warranty
or guarantee, express or implied, that such performance will be obtained under end-use conditions.

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