GE Industrial Solutions Power Break II Motor Operator User Manual
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GEH–6281E
Power Break® II Circuit Breaker
Accessories
Motor Operator Mechanism
Introduction
The Motor Operator Mechanism, shown in Figure 1, can
be installed in 800–4000 A frame Power Break® II circuit
breakers. It provides a means of remotely or
automatically charging the springs that close the breaker.
Table 1 lists the catalog numbers and corresponding
electrical data for the available models. Note that the
Remote Close and Shunt Trip accessories are not
included with the Motor Operator Mechanism; they must
be ordered separately.
Remote Operation
The circuit breaker closing springs can be charged
remotely by shorting terminals 17 and 35 on the terminal
block on the right side of the breaker, with a push button
or similar device, for a minimum of five seconds. Power
for the Motor Operator must also be applied to terminals
18 and 36, as shown in the wiring diagram in Figure 6.
Automatic Operation
Connect terminals 17 and 35 on the terminal block on
the right side of the breaker with a jumper wire. The
Motor Operator will automatically recharge the breaker
closing springs whenever the breaker closes.
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charge and automatic close.
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tous les deux l’armement automatique et la fermeture
automatique.
::
Do not wire breakers for both automatic
::
Ne pas câbler les disjoncteurs pour
Figure 1. Motor Operator Mechanism.
Control
Rated Voltage
(50–60 Hz) Voltage
Rating
24 Vdc 21–27 Vdc 30.0 14.0 11.0 3.0 (nom) 12 A, 125 V
48 Vdc 41–53 Vdc 18.0 7.0 4.5 3.0 (nom) 7 A, 125 V
72 Vdc 62–80 Vdc 10.0 4.5 3.0 3.0 (nom) 5 A, 125 V
120 Vac 102–132 Vac 7.5 4.0 2.0 3.0 (nom) 4 A, 125 V
125 Vdc 106–137 Vdc 8.0 2.5 1.8 3.0 (nom) 2.5 A, 125 V
240 Vac 204–264 Vac 6.0 2.5 1.0 3.0 (nom) 2.5 A, 250 V
➀
Charging times apply to nominal voltage only; times may vary at maximum and minimum voltages.
Peak Inrush
Current, A
Table 1. Electrical data for the Motor Operator Mechanism.
Peak
Full-Load
Current, A
Average
Current, A
Charge Time
(sec)
➀
Recommended
Fuse (Slo-Blo)
Power Break® II Motor Operator Mechanism
Installation in 800–4000 A Stationary Breaker
Installation in 800–4000 A Stationary
Breaker
::
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breaker off, disconnect it from all voltage sources, and
discharge the closing springs.
Before installing any accessories, turn the
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mettre le disjoncteur en position OFF, le déconnecter de
toute tension d’alimentation, et décharger les ressorts
d’armement.
Use the following procedure to install the Motor Operator
Mechanism onto a stationary circuit breaker.
1111....Verify that the rating on the Motor Operator
Mechanism identification plate matches the
voltage rating required for the application, as
listed in Table 1.
2222....Check that the package contains all the parts listed
in Table 2. If any components are missing, contact
the ED&C Customer Support Center at 800-843-
3742. Note that the Remote Close and Shunt Trip
accessories are not included with the Motor
Operator Mechanism; they must be ordered
separately.
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Motor Operator Assembly 1
1
⁄4-20 x 3-inch Flat-Head Screw 2
1
⁄4-inch Conical Lock Washer 2
Mounting Bracket 1
#10-32 x 1⁄4 inch Screw 6
#10 Lock Washer 6
Labels 2
Table 2. Parts list for the Motor Operator Mechanism.
3333....Verify that the charge arms of the Motor Operator
Mechanism are in the discharged position, as
illustrated in Figure 2.
4444....Turn the breaker off and discharge the closing
spring by depressing the OFF and ON buttons in
the sequence OFF-ON-OFF. Verify that the breaker
OFF-ON indicator shows OFF on a green
background and that the charge indicator shows
DISCHARGED on a white background.
5555....Loosen the four #8-32 screws on the trim-plate
assembly and remove the trim plate.
6666....Loosen the four screws at the corners of the breaker
cover. Crank the operating handle one time and
hold it extended to remove the cover from the
breaker face, as illustrated in Figure 3. The Motor
Operator can be safely installed with such a
partially charged mechanism.
::
Avant d’installer tout accessoire,
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Figure 2. Motor Operator Mechanism charge arms in the discharged
position.
Figure 3. Removal of the breaker top cover.
7777....Remove the screw holding the left secondary
terminal block to the midcover and lift the terminal block up and away from its mounting ridge
on the midcover.
8888....Install the Remote Close accessory at this time if
the breaker is to be equipped with this option.
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sssshhhhoooowwwwnnnn iiiinnnn FFFFiiiigggguuuurrrreeee 4444,,,, tttthhhhaaaatttt aaaattttttttaaaacccchhhheeeessss tttthhhheeee ssssttttoooopp
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11110000....Position the charge interlock rod of the breaker
down against the midcover.
11111111....While holding the charge arm of the Motor
Operator Mechanism in the discharged position,
align the splined closing shaft of the breaker with
the splined cutout in the hub of the charge arm, as
shown in Figure 4. Tilt the right end of the
mechanism up so that the guard (see Figure 2)
clears the lip on the side of the breaker, as shown
in Figure 5. Push the Motor Operator Mechanism
in past the lip, rotate it back down, then push it
..
,,
pp
2
Power Break® II Motor Operator Mechanism
onto the breaker until the spacers engage the
spring frame and the stop block.
11112222....Attach the Mounting Bracket to the four holes
opposite the stop block on the spring frame with
#10-32 screws tightened to 32 in-lb torque. The
bend of the bracket must be outward from the
spring frame.
11113333....Align the two holes in the Mounting Bracket with
the two holes in the Motor Operator Mechanism
and attach with two #10-32 screws tightened to 32
in-lb torque.
11114444....Thread a
washer through the spacer and into the stop block,
as illustrated in Figure 4. Thread the other
flat-head screw and conical lock washer through
the spacer into the captive nut in the spring frame.
Tighten both screws to 70 in-lb.
11115555....Plug the color-coded, numbered Motor Operator
Mechanism wires into the corresponding numbered sockets, as illustrated in Figure 6. Mating
connector wires are installed at the factory and are
located in the gray-painted channel, shown in
Figure 5
11116666....Dress the wires and install cable ties as shown in
the illustration in Figure 7. Ensure that wires are
clear of all moving parts.
11117777....Reinstall the secondary terminal block onto the
breaker midcover terminal block mounting ridge
and fasten with the screw previously removed.
11118888....Crank the operating handle once and hold the
handle extended to reinstall the breaker top cover.
Tighten the four #10-32 mounting screws to 15 inlb.
11119999....Replace the trim plate and tighten the four #8-32
screws to 20 in-lb.
22220000....Affix the accessory rating label to the breaker cover
above the right-side secondary terminal block.
22221111....Affix the “Electrically Operated” label to the top
cover over the knock-out space above the ON-OFF
indicator flag.
22222222....Crank the operating handle until the closing
springs are completely charged.
22223333....Close and trip the breaker.
22224444....Test the Motor Operator Mechanism electrically
according to Table 1.
1
⁄4–20 flat-head screw and conical lock
1
⁄4–20
Installation in 800–4000 A Stationary Breaker
Figure 4. Installing the Motor Operator Mechanism onto the breaker.
Motor Operator
Wires in Gray
Channel
Guard
Lip
Figure 5. Rotating the Motor Operator Mechanism so that the guard
clears the lip on the side of the circuit breaker.
3
Power Break® II Motor Operator Mechanism
Installation in 800–4000 A Stationary Breaker
Figure 6. Wiring diagram of the Motor Operator Mechanism and Remote Close accessories.
Figure 7. Installing the Motor Operator wires.
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