supply of relay testing kitrelay testing kit,supply of relay testing kit suitable for testing of over current relays (directional/non -direct ional), frequency relays, (over, under & df/dt), power relays ,voltage relays (over, under & over fluxing), dista nce relays, differential relays, wrong phase coupling, single phase relays (transformer, motor, generator, line , bus bar), auto-reclose relays, , high impedance earth-fault (relays, for , earth fault relay, single phase rel ay suitable for testing of numerical relay/ microprocessor /static type of ac trac tion as specification enclosed. [ warranty period: 30 months after the date of delivery ] ]