GE Power Break 1 Manual

Power Break® Circuit Breakers
Chapter 2. Breaker Operation
5 charge as soon as the breaker is opened, whether from a
fault trip or from being intentionally opened.
CC C C
AA A A
UU U U
TT T T
II I I
OO O O
NN N N::: :
 Do not wire breakers for both automatic
charge and automatic close unless a bell alarm with
overcurrent lockout is incorporated. Otherwise, the
breaker may repeatedly close into an overcurrent fault.
CC C C
AA A A
UU U U
TT T T
II I I
OO O O
NN N N
::: : The bell alarm lockout and...

Power Break® Circuit Breakers
Chapter 2. Breaker Operation
6
Application Notes
• Size the control power source according to the
information in Table 3. If a single source is to supply
several motor operators, it must be sized appropri-
ately. Where breakers are wired for automatic
charge, it may be necessary to supply power to several
motor operators simultaneously during start up.
• The control power source should be sized so that the
drop in voltage from no load to full load does not
exceed 7%.
•...

Power Break® Circuit Breakers
Chapter 2. Breaker Operation
7 All breakers provided with tap cards are shipped with both
HIGH (100% of the current rating Sensor  Amp on the
breaker name plate) and 
low (50–75% of the current
rating 
Sensor  Amp on the breaker name plate). The low
card is packed and supported on the breaker handle. The
high card is installed in the breaker frame. To change
settings use the following procedure:
WW W W
AA A A
RR R R
NN N N
II I I
NN N N
GG G G
::: : The circuit breaker must...

Power Break® Circuit Breakers
Chapter 2. Breaker Operation
8
Figure 12. Wiring diagram for MicroVersaTrip and MicroVersaTrip
RMS-9 trip units with ground fault on a top-fed four-wire load.
Figure 13. Wiring diagram for MicroVersaTrip and MicroVersaTrip
RMS-9 trip units with ground fault on a bottom-fed four-wire load.
MicroVersaTrip RMS-9 Trip Units
The trip units on MicroVersaTrip RMS-9-equipped break-
ers are not interchangeable. The breaker rating may be
adjusted by changing the rating plug installed...

Power Break® Circuit Breakers
Chapter 2. Breaker Operation
9 33 3 3
... .
Install the replacement trip unit as shown in Figure
15:
aa a a
... .
Align the holes in the bottom of the trip unit with
the guide pins in the mounting plate. Lower the
trip unit until it is fully down on the mounting
plate and the connecting plug is secure.
bb b b
... .
Push in the trip unit-cover interlock until it locks
in place, as shown in Figure 14.
NN N N
OO O O
TT T T
EE E E
::: : The trip unit has a stud on the bottom to...

Power Break® Circuit Breakers
Chapter 3. Accessories
10
3–1 Introduction
These instructions cover the field installation of internally
mounted electrical accessories. They are UL listed for use
in all 800–2000 A frame Power Break® circuit breakers
with MicroVersaTrip® trip units. These accessories may
also be installed in 800–1600 A frame Power Break break-
ers with MagneTrip™ trip units, but the UL listing is
voided.
The control leads of internally mounted accessories exit in
pigtail form from the side...

Power Break® Circuit Breakers
Chapter 3. Accessories
11
Figure 18. 1600–2000 A frame electrically operated breaker.
Figure 19. 1600–2000 A frame electrically operated breaker with the
outer cover removed.
Breaker Cover Reassembly
Manually Operated Breakers
11 1 1
... .
Verify that all connections are secure and the breaker
is free of debris.
22 2 2
... .
Verify that the breaker is 
off.
CC C C
AA A A
UU U U
TT T T
II I I
OO O O
NN N N
::: :
     Verify that the accessory mounting plate
insulator, shown...

Power Break® Circuit Breakers
Chapter 3. Accessories
12 55 5 5
... .
Position the charging handle at the home position (6
o’clock) on the outer cover. Align the outer cover-
mounting screw holes with those on the inner cover
and install the four cover-mounting screws. Tighten
to 50–60 in-lbs.
NN N N
OO O O
TT T T
EE E E
::: : Ensure that the control terminal board properly
engages the cover retaining slots.
66 6 6
... .
Connect the control and power wiring as per the
instructions supplied with the...

Power Break® Circuit Breakers
Chapter 3. Accessories
13
Shunt Trip Installation
NN N N
OO O O
TT T T
EE E E
::: : If the shunt trip is being replaced because of a
defective coil, the cause of the initial failure should first
be determined. If necessary, consult the factory for fur-
ther guidance.
11 1 1
... .
Assemble the coil to the mounting plate as shown in
Figure 25. If a blown-fuse trip device is also to be
installed on the mounting plate, mount the shunt
trip coil as shown in Figure 26.
22 2 2
......

Power Break® Circuit Breakers
Chapter 3. Accessories
14
3–4 Undervoltage Release Device
The undervoltage release device (UVR), shown in Figure
28, opens the circuit breaker when the supply voltage
drops to 35–60% of its rated value. Figure 29 shows the
dropping resistor supplied with 240–600 volt UVRs. The
UVR electrical characteristics are listed in Table 6. The
UVR wiring diagram is in Figure 30.
Figure 28. Undervoltage release device.
Figure 29. Dropping resistor supplied with 240–600 V UVRs.
Figure...