The 'CGV 24C' Numerical Protection Relay is a fully digital relay based on microprocessor technology with analogue to digital conversion of the measured values and subsequent numerical processing. It uses specialized digital signal processor (DSP) as the computational hardware, along with associated software.

The relay has feature of Definite Time Lag (DTL) characteristic. The relay can be field programmed for Under voltage / Over Voltage and Neutral Displacement protection functions. The front panel features a 6-button keypad & a 16x2 LCD display that provides an easy user interface.