Overcurrent Relay

Overcurrent Relay Description

Overcurrent Relay

Product Overview
XOCR-C4 is a digital overcurrent protection relay, which controls short circuit and ground overcurrents protection over 22.9 KV power lines owned by KEPCO and 154KV/23KV transformers.
It uses a high-speed DSP processor which built-in timing and communication functions (DNP3.0, Modbus, etc.) for automatic transformation of the electric power.

Characteristics

• Short circuit and ground overcurrent protection
  
• DC 125V and AC 110V input
  
• EMC (EMI/EMS) Test
  
• Complies with relay related international standard IEC60255 Series and the immunity international standard IEC61000-4.

Features

• Instantaneous and timed operation;
  Instantaneous operation: Operation within 40ms;
  Timed operation: Inverse, strong-inverse and super-inverse time curves (IEC60255-3)/
• Metering
  Real-time 3-phase current metering (RMS, instantaneous values);
• Saving and displaying fault data/events;
  Saving and displaying trip, fail and alarm information;
  Saving and displaying accident time/date/type/operating elements;
  Saving and displaying event time/date/type/operating elements;
• Analyzing relay status with a software installed on the connected PC;
• Assisted and automatic inspection

Standard

• KEMC 1120
  
• IEC 60255 Series
  
• IEC61000-4

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