GE Power Break II Manual page 20

MicroVersaTrip Plus™ and PM™ Trip Units
+24 Vdc Input
MicroVersaTrip PM trip units req uire an external +24 Vdc
power supply to furnish power to the communication
network. In addition, this power supply energizes the LCD
display, so that low cu rrent values, voltage val ues and trip
targets are d isplayed without u se of the i nternal batteries.
H owever, batteries are suppl ied with MicroVersaTrip PM trip
units for cold set-ups and viewing targets in the event the
+24 Vdc power sup ply is i nterrupted. A single +24 Vdc power
supply can supply the power req u i rements of u p to 16 M icro­
VersaTrip PM trip un its.
M icroVersaTrip PM Microprocessor
120
N
Phases
PTs With Vac Secondaries
A B C
\
' , _;:_ , '
'
,
,
Current Sensors
, ,
- - -
Phase
I
Currentt
I
I
I
(Optional Neutral Current)
I
I
I
I
(Phase Currents - Optional
Hi-Range Instantaneous)
*Shunt
T rip
UVR
Tri p Unit
Keypad
N
Zone Selective Interlock
A B C
Input/Output
(Optional)
Phases
Communications Link
Block d iagram of MicroVersoTrip PM trip u n it
20
MicroVersaTrip PM
Microprocessor
Q;
t:
Cl>
>
c:
0
(,)
Q
�
Rating
Plug
Hi-Range
Instantaneous
(Optional)
Protective Relays
Overvoltage
•
Undervoltage
•
Unbalance Voltage
•
Reverse Power
•
24
Vdc Power Supply
*With or without lockout
Com m unications Output
The commun ications network uses a pair of shielded, twisted
wires to connect individual devices to the POWER LEADER™
system. Connection distances u p to 1000 ft . can be made
without repeaters. All com m u nication network wiring within
the breaker i s pre-wired to dedi cated secondary termina ls.
I ntegration to Modbus RTU networks requ i res the use of a
POWER LEADER Modbus Concentrator.
Fault .,
Trip
Logic
Fault
Shunt Trip
UVR
u
Fa l
Shunt Trip
t
UVR
Contact Position Switch
Drawout Position Switch
Trip
Acuator
Bell Alarm,
Alarm Only
Bell Alarm
With Lockout
LCD Display