The protection and earth fault relay is a numercial overcurrent protection relay intended as a simple protecion solution for distribution and industrial application.

Applications

• Industry medium voltage and low voltage applications
• Feeder overcurrent protection
• Backup protection
• Compact substations
• Protection against harmonic injection into grid by non conventional sources of energy
• Focus on renewable energy sources

Features

• Circuit breaker open and close fascia push button
• Protection settings can be viewed and edited from the fascia
• 9 user programmable LEDs
• Cold load protection
• Two-level Password protection
• User programmable logic aided by 8 virtual inputs / outputs
• Circuit breaker trip and maintenance counter
• Displaying of the last 100 fault records on the relay fascia
• Up to 15 records in the waveform recroder (1 second duration)

Device design

• Flush mounting, non draw-out polycarbonate case (Size4 standard)
• IP54 (front), IP20 protection for terminals (rear side)
• 4 line by 20 character liquid crystal display with power save operation

Conformal coating

x Standard version – No conformal coating on PCBA

O conformal coating on PCBA

Languages

English with changing possibility via Language Configurator

Binary inputs and outputs

X 3 binary inputs, 3 binary outputs

O 6 binary inputs, 6 binary outputs

Measuring input

X 1/5 A, 50/60 Hz

O 1/5 A, 50/60 Hz sensitive earth fault input

Auxiliary voltage

O AC/DC 60-240V, binary input threshold 44 V AC/DC

X AC/DC 60-240V, binary input threshold 88 V AC/DC

O 24-60 V, binary input threshold 19 VDC

O DC 24-240V/AC 48-240V, binary input threshold 19 VDC

Communication interfaces

X Front interface: USB

O Front interface: USB and rear port: RS 485 supporting IEC 60870-5-103 or Modbus RTU or DNP V3.00

Functionality

X Basic functions

• 3-pole tripping
• Undercurrent (37)
• Unbalanced-load protection / broken wire (46)
• Negative-sequence system overcurrent protection (46)
• Thermal overload protection (49)
• Instantaneous Phase Fault Overcurrent (50)I
• Circuit-breaker failure protection (50BF)
• Instantaneous Earth Fault Protection (50SEF)
• Time Delayed Phase Fault Overcurrent (51)
• Time Delayed Earth Fault (51 G/N)
• Time Delayed Sensitive Earth Fault (51SEF)
• Cold load pick up (51C)
• CT Supervision (60CTS)
• Restricted Earth fault High Impedance (64H)
• Trip and closing circuit supervision (74T/CCS)
• 2nd Harmonic block/inrush restraint (81HBL2)
• Total Harmonic Distortion Supervision (81THD)
• Hand reset (86)

O Automatic Reclosing (79)

O With thermal withstand capability of 500A (5A CT), 1 sec and supporting Turkish scripts (Turkey market)