MicroVersaTrip Plus™ and PM™ Trip Units
+24 Vdc Input
MicroVersaTrip PM trip units req uire an ex24 Vdc
power supply to furnish power to the communication
network. In addition, this power supply energizes the LCD
display, so that low current values, voltage values and trip
targets are displayed without use of the i nternal batteries.
However, batteries are supplied with MicroVersaTrip PM trip
units for cold set-ups and viewing targets in the event the
+24 Vdc power supply is interrupted. A 24 Vdc power
supply can supply the power requirements of up to 16 M icro
VersaTrip PM trip units.
MicroVersaTrip PM Microprocessor
Com m unications Output
The communications 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 communication network wiring within
the breaker is pre-wired to dedicated secondary termina ls.
I ntegration to Modbus RTU networks requires the use of a
POWER LEADER Modbus Concentrator.
Phases
MicroVersaTrip PM
Microprocessor
A B C
N
PTs With
120
Vac Secondaries
Fault
Q;
t:
Cl>
\
>
c:
' ,
0
Trip
(,)
Q
Logic
Current Sensors
�
'
,
,
- - -
, ,
Phase
Rating
Currentt
Plug
I
I
I
I
(Optional Neutral Current)
I
I
I
I
Hi-Range
(Phase Currents - Optional
Instantaneous
Hi-Range Instantaneous)
(Optional)
*Shunt
Trip
UVR
Protective Relays
•
Overvoltage
•
Undervoltage
Trip Unit
•
Unbalance Voltage
Keypad
•
Reverse Power
Zone Selective Interlock
A B C
N
Input/Output
Phases
(Optional)
24
Vdc Power Supply
Communications Link
*With or without lockout
Block diagram of MicroVersoTrip PM trip unit
20
Trip
Acuator
Fault
Shunt Trip
UVR
Fa
u
l
t
Shunt Trip
UVR
Bell Alarm,
Alarm Only
Bell Alarm
With Lockout
LCD Display
Contact Position Switch
Drawout Position Switch
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. com
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. com
Содержание Power Break II
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