Ashida electronics pvt. Ltd is a designers, developer &producers of electrical power protection relays & scada systems. Ashida electronics pvt. Ltd is an iso 9001:2000 certified company. Ashida electronics pvt. Ltd offers ashida numerical uv/ov Protection relay adr 232 b is basically 3 phase under/over voltage protection with definite time. The adr132b is designed to meet demand of low and medium switchgear control. The adr132b continuously monitors all 3 phase voltage, through pt connections. The high-speed micro-controller samples this voltage sine wave through a 12 bit a/d converter. The microcontroller performs powerful digital algorithms to find out amplitude of voltage signal, and then this value is use for protection and metering function. All measurement is tuned to fundamental frequency and reject all higher harmonics present in electric supply. Each phase voltage is also displayed on 16 x 2 lcd display for metering. The relay is having main three functions 1] protection 2] self- supervision 3] measurement.
