Current Sensors - GE Power Break II Manual

MicroVersaTrip Plus™ and PM ™Trip Units
Rating Plugs
The same interchangeable rating plugs are u sed in a l l of the
MicroVersaTrip Plus™ and MicroVersaTrip PM™ trip un its
across the entire Power Break® I I breaker product l i ne. Rating
plugs a re the key devices that establish the cu rrent rating of
the breaker. They provide an essential scaling function for the
unit's m icroprocessor. and ensure maximum accu racy. They
a lso provide an external jack for connection to an external
battery pack.
Rating plugs h ave rejection features that a l low them to be
inserted only with breakers containing the correct cu rrent
sensors. Rating plugs for the enhanced MicroVersaTrip Plus
and M icrosVersaTrip PM trip u n its cannot be u se with Spectra
RMS™ molded case circuit breakers, but a re compati ble with
Power Break and Type AKR breakers with M icroVersaTrip Plus
and MicroVersaTrip PM trip units. See Ta ble 23.1
M ic roVersaTrip rating plug
Ta ble 23. 1
Rating Plug And Current Sensor Rating
Frame Max. Sensor
Envelope
Rating Rating
Size
(Amps) (Amps)
(S)
200
800
400
800,1600 800
2000
1000
1600
1600
2000
2000
1000
2500 2000
3000
2500
3000 3000
4000 4000
4000
S= Sensor amp rating
X= Rating plug amps
Sensor Rating
Plug Amps IX)
100, 150, 200
150, 0. 225 ,2 50, 300, 400
300.400,450,500.600,700,800
400,600,800,1000
600,800, 1000, 1 1 00,1200, 1600
800, 1000, 1200, 1 500,1600,2000
400,600,800, 1000
800,1000.1200.1500,1600,2000
1600,2000,2500
2000,2500,3000
1600,2000,2500,3000, 3600,4000

Current Sensors

Toroidally wound cu rrent sensors a re furnished for all major
p rotective functions and for use with M icroVersaTrip PM trip
u nits. Toroidal sensors, including a second air-core winding,
a re provided with the hig h-range instantaneous function.
Current sensors are factory insta l led and a re not changeable
i n the field. There a re 1 1 current ratings for the Power Break
II breaker line through 4000 amps. See Table 23.1 for current
ratings. Rating plugs must be coordinated with the current
sensor rating (S) listed on the face of the rating plug.
Typical toroidolly wound cu rrent sensor
Accessory Config u ration
Activation of the Bell Alarm - Alarm Only and Bell Alarm with
Lockout a re controlled by switch setting on the rear of the
trip unit. To change the conditions which activate these ac­
cessories, config u re the trip unit switch setting as described
below.
Rear of tri p u n it
Table 23.2
Accessory Switch Setting
Switch Factory
Setting
Shunt trip activates Bell Alarm - Alarm Only
1 Disable
2 Disable UVR Trip activates Bell Alarm- Alarm Only
3 Enable Protection trip activates Bell Alarm - Alarm Only
4 Disable Shunt Trip Activates Bell Alarm/ Lockout
5 Disable UVR trip activates Bell Ala rm/Lockout
6 Enable Protection trip activates Bell Alarm/ Lockout
Function
23