Transformer Protection GRT100

GRT100 is a numerical transformer protection relay, which can be applied for two-winding or three-winding power transformers, auto-transformers and generator- transformer units. The main transformer differential protection is supported by restricted earth fault, back-up overcurrent, thermal overload, over-excitation and frequency protections. In addition there are standard GR-series features such as metering, data recording and communications.

1. Metering
   - Power system voltages, currents, differential currents, frequency

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

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

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

1. Automatic monitor