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Toshiba Energy Systems & Solutions Corporation

Product/Technical Services

Multi Function Protection IED GRD200

Product Overview

The GRD200 multi-function IED has been designed to provide a comprehensive protection and control solution for distribution feeders, while also being applicable as a back-up protection for transmission lines, power transformers and other electrical plant. Its multiple, high-accuracy overcurrent protection elements can be independently subject to directional control, while a range of other protection functions can also be selected for thermal overload, under/overvoltage, under/over frequency, circuit breaker failure and voltage controlled overcurrent applications. Optional bay control and monitoring functions are also provided within the flexible and user-friendly GR-200 Series platform.

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Technical Description

Protection functions

  1. Directional or non-directional overcurrent and earth fault protection

  2. Sensitive directional or non-directional earth fault protection

  3. Undercurrent protection

  4. Directional or non-directional negative sequence overcurrent protection

  5. Negative sequence overvoltage protection

  6. Thermal overload protection

  7. Under- and over-voltage protection

  8. Under- and over-frequency protection

  9. Rate-of-change of frequency

  10. Broken conductor detection

  11. Circuit breaker failure protection

  12. Cold load protection

  13. Voltage controlled overcurrent protection

  14. Switch on to Fault

DMulti Function Protection IED GRD200 Products Image

Control functions

  1. Autoreclose (upto 5 shot)

  2. Synchronism voltage check

  3. Circuit breaker and isolator control

  4. Switchgear interlock check

  5. Metering and recording functions

Metering and recording functions

  1. Metering
    - Power system currents, voltages, power, frequency and power factor

  2. Recording
    - Event record
    - Fault record
    - Disturbance record

Communication Protocols

  1. IEC 61850 (Ed 1.0 and 2.0) or IEC 60870-5-103 for communication with a Substation Automation System

  2. IEC62439 PRP/HSR/RSTP for communication redundancy

Human interfaces

  1. Selection of HMI: Standard LCD, large LCD

  2. 24 configurable tri-state LEDs selectable red/green/yellow

  3. 7 programmable function keys for user demand operation

  4. Personal computer interface (USB and Ethernet ports)

  5. Monitoring jacks for internal circuit test

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