Profile: JVS Electronics Private Limited is a manufacturer of protective and auxiliary relays, annunciators, hooters, instruments & other control equipment. Our auxiliary relay features electromechanical design, plug-in construction, standardized contact- arrangement, self or hand reset contacts and protective transparent cover for the element. JRV 073 voltage control relay is a software based relay exclusively designed for capacitor bank switching by monitoring the line voltage. The relay is self contained. A single JRV 073 relay can control up to 6 capacitor banks through built-in electromagnetic relays. Changeover contacts are brought out for external control. Frequency relays are used to monitor continuously the frequency of an electrical system. It is also used in graded load shedding system and industrial plants having captive power generators requiring under frequency protection. Our universal test blocks and test plugs are suitable for all type of protective relays like O/C & E/F relays, transformer differential relays & distance relays. JRTB relay test block has twenty six pairs of contacts. Each pair of contact is spring loaded and sufficient insulation barrier is provided between each contact. Permanent connections are made between the test block and the relay. The test plug is inserted into the block for testing. In normal service, a protective cover is fitted to the block. This cover is provided with a connection for trip circuit and once the cover is removed trip circuit is bye-passed.