Motor Protection Unit

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Products Code : MPS8000, MPU5110

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Description

 Common Features:

  • User programmable password protection.
  • Auto scaling of kilo, mega, giga and decimal point.
  • Auto scrolling.
  • Finger touch proof terminals.
  • Clearance and creepage distance meet UL61010 safety standard.
  • Communication with PCs, PLCs, DCS through optional RS485/2312 serial interface.
  • Potential free O/P with programmable trip time for protection.
  • Displays more than 25 parameters – VLL, VLN, A, Hz, W, VA, PF, Wh, Load Hours.
  • Displays the reasons for tripping for future correction.
  • Programmable start time from sensing safe condition.
  • Programmable locked rotor current and time.

Additional Features for MPS8000:

  • Displays ON hours, Load Hours and no. of Interruptions.
  • Simultaneous display of 7 parameters.
  • Intelligent power save mode.
  • Two field configurable parameters for continuous display.
  • Graphical display.
  • Neutral current display and protection.
  • Single solution for protection of motors/equipment against voltage, overload, Hz, PF, single phasing, unbalanced voltage & current, neutral current & phase reversal.
  • Programmable (intelligent inverse time) trip time for volts/overload/Hz/PF/neutral current.
  • Programmable relay status High or Low for safe; 2 relays for alarm and trip.
  • Detect winding shorts.
  • Safe/Alarm/Trip indication for online view.
  • Manual re-correction after the trip.
  • Measures VLL, VLN, A, Hz, W, VA, PF, Neutral Current, Wh, Load Hours, ON Hours, No. of Interruptions.

Technical Specifications:

Accuracy

Class 1.0 (default), Class 0.5 (optional on request)

Sensing/measurement

True RMS, 1 sec. update time

Input Voltage

4 voltage I/Ps (VR, VY, VB, VN) programmable 110 or 415VLL Nominal (range 80-500VLL) primary programmable up to 999kV. Burden: 0.2VA max. per phase

Input Frequency

45-65Hz

Input Current

3 I/P currents (AR, AY, AB) 50mA-6A (field configurable 1A or 5A), primary programmable up to 99kA. Overload: 10A max. continuous, 50A max. for 3 sec. burden: 0.2VA max. per phase

Aux. Supply

Control power: 180-300V AC/DC 40-70Hz

Burden: 10VA max.

CT/PR ratio max.

2000MVA programmable

Communication

RS485 serial channel connection, industry standard MODBUS RTU protocol (RS232 optional)

Baud rate: 4800 to 19200bps (preferred 9600bps)

Isolation: 2000V AC isolation for 1 minute between communication and other circuits

Parameters and Range:

Parameters

Default Setup MPU5110

Default Setup MPS8000

Range

Connection Mode (ELEMENT)

STAR

STAR

STAR/DELTA

PT Primary (PT.Pri)

415.0

415.0

100V to 999kV

PT Secondary (PT SEC)

415.0

415.0

50-550V

CT Primary (CT.Pri)

5.000

5.000

0.5A to 99kA

CT Secondary (CT SEC)

5.000

5.000

0.5-6A

VA Selection (UA.SLEC)

Arith (Arithmetic)

Vec.H (Vector Harmonics)

Arith (Arithmetic)/Vec.H (Vector Harmonics)

Over Voltage (Line to Line)

550.0

550.0

1.000-999kV

Under Voltage (Line to Line)

10.00

0.001

0.001-999kV

Under Current (Dry Run)

0.200

NA

0-99kA

Over Current

6.0

6.0

0.500-99kA

Over Frequency

NA

60.00

25-200

Under Frequency

NA

40.00

25-200

Under PF

NA

0.400

0.001-0.999PF

Percentage Voltage Unbalance

NA

7.000%

0.5-60%

Percentage Current Unbalance

NA

7.000%

0.5-60%

Neutral Current

NA

2.000

0.030-99kA

ON Delay

5.00

10.00

1-600 sec.

OFF Delay

5.00

3.000

1-60 sec.

Motor ON Safe Status

NA

RELAY ON

REL ON/OFF

Locked rotor Current

6 time fixed (not programmable)

30.00

1-999kA

Locked Rotor Time Delay

NA

5.00

1-60 sec

Winding Short

NA

10%

5-90%

Over Current Digital O/P Characteristics

Absolute

INV CUrV

INV CUrV/Absolute

Poles

NA

4.000

1-28 Poles

Reverse Lock

No

No

NO/YES

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