Sharmasons sakova instruments [p] ltd, ghaziabad [up], supplies portable relay testing set. It is meant for testing of all types of single phase relays, i.E., over current, over and under earth fault power voltage and directional relays. This portable relay testing set comprises ammeter, voltmeter, time interval meter and condenser and resistors for phase shifting, with suitable controls and terminals for following outputs: main outputs - 0-1/5/25/50/100 a or 250 v ac/dc; and auxiliary outputs - 0-250 v ac or 0-25 a ac and 0-250 v dc. The 4-digit auto-ranging time interval meter incorporated by this portable relay testing set has the range of 0.0001 to 9999 s with accuracy of 0.05 per cent. Other products of the company include: primary current injection sets, ac/dc hv and oil test sets, contact resistance meters, meggers, tong testers, etc.
