MPRO – 90



MPRO – 90

M Pro- 90 protective relay is an Economic Solution in Motor protection application provides multi protection and monitoring. The relay offers reliable protection for LV motors which are either operated via power contactors or power circuit breakers.

Key Features

»  Measurement: 3 Ph RMS Current, % Unbalance, Thermal Content (%)
»  Suitable for Variable Frequency Control Application (20-200Hz)
»  DEFT / Inverse Characteristics (Bi Metallic)
»  Nominal Frequency – 50/60 Hz
»  Last Fault Record (Type of Fault, Fault Parameters, Accumulated Run Time)
»  Selectable Fail Safe mode
»  Thermal / Manual Reset
»  Auto / Manual Scroll
»  External CT for Measurement


Protection Function:


  Over Load / Short Circuit (50/51)

  Thermal Load (49)

  Under Current (37)

  Unbalance / Phase Loss (46)

 


  Phase Reversal (47)

  Locked Rotor (50LR)

  Earth Fault (Residual) (50G)

  Stall (50S)

MPRO – 90


Hardware


  7 Segment LED Display.

  Wide Auxiliary Supply – 170 to 280 V AC

  Trip Time - ±5% (or ± 100 mSec)

  Current - ±3% (or ± 0.01 Amp)



  Contact Rating:
  • Trip Relay Contact – 1 C/O Contact, 6A / 250V AC or 24V DC
  • Alarm Relay Contact – 1 N/O Contact, 3A / 250V AC or 24V DC


  Manual Trip Relay Reset

  2 out Put Contact (Fail Safe Operation)

Standards


Test

Reference Standards

Design Standards

IEC 60947

  • Radiated Electromagnetic Field (Class A)
    Mains Terminal Disturbance Voltage (Class A)

  • IEC 60947-4-1

  • Harmonic Current Emissions

  • IEC 61000-3-2

  • Voltage changes, Voltage fluctuations & Flicker
    Electrostatic Discharge Immunity (Class A)

  • IEC 61000-3-3

  • Radiated RF E-Field (80 to 1000 MHZ) (Class A)
    Electrical Fast Transient / Burst Immunity (Class A)
    Surge Immunity (Class A)

  • IEC 60947-4-1