Rishabh Instruments Pvt. Ltd. Protection Relays & Systems RISH RELAY V-3-3001-HA

RISH Relay - V is a three-phase voltage protection relay with dual relay contacts (1CO+1CO) and an external auxiliary supply of 60-300 V AC/DC. It provides protection against over voltage, under voltage, phase failure, and incorrect phase sequence, with True RMS measurement up to the 15th harmonic and a Class 0.5 accuracy. The unit features a 4-digit 7-segment LED display, stores the last 15 faults, and supports on-site programming of PT primary (100 V to 1200 kV) and secondary (100 V to 600 V) values. It operates with a maximum continuous input voltage of 127% of the PT secondary, and complies with IEC 61010-1-2010 and IEC 61326-1 standards. The device permits user-selectable 3-phase configurations (1P2W, 3P4W, 3P3W), adjustable trip points and time delays, AND logic for dual fault triggering, and auto or manual reset modes.