Product/Technical Services

Auto-Reclose Controller GRR100

Product Overview

GRR100 numerical single or multi-shot autoreclosing relay is suitable for application to either a single circuit breaker or two circuit breakers configured in a one-and-a-half breaker busbar system, and includes an integral synchronism check function.

Technical Description

Protection functions

  1. Single-shot, single-phase and/or three-phase autoreclose scheme for one or two circuit breakers

  2. Multi-shot (selectable between 2 and 4) three-phase autoreclose scheme for one circuit breaker

  3. Integrated synchronism check function for autoreclose

  4. Autoreclose counter
    - three-phase autoreclose


Metering and recording functions

  1. Metering
    - Differential voltage

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

  3. Calendar and Time
    - IRIG-B port for external clock

Menu-driven human interfaces

  1. Liquid Crystal Display (LCD) display with operation keys
    - Relay setting and data display

  2. Personal computer (PC) interface
    - Relay setting
    - Recorded data display
    - Waveform analyzing

Automatic supervision

  1. Automatic monitor