ISA is a worldwide manufacturer and supplier of automatic protection relay test systems: the leading edge technology and reliability of ISA three phase relay test sets can fulfil all the customer testing needs. ISA protective relay test set are designed to accomplish measurement and test for transducers, energy meters and power quality meters.
ISA range of products includes also relay test equipments with IEC 61850 Communication protocol interface and secondary injection test set endowed with different features: the wide choice granted to commissioning engineers and the extreme robustness of its testing devices confirm ISA as one of the biggest world leader in power system protection testing.

Testing relays can be either primary and secondary injection; by this second option the protective relay is not connected to the measuring transformer and current and voltage are applied directly to the relay from the test set. T 1000 Plus is a perfectly designed equipment to test any type of relays on single phase purpose for an easy understanding of the behaviour of the relay itself.

ISA’s range of test sets includes also substation maintenance and commissioning test equipment T 3000 and T 2000, which are designed to test static equipments such as power, measuring transformers, ground grid network, line impedance. By the application of primary injection and/or high voltage the major functionality of these apparatus can be easily checked.

ISA’s circuit breaker analyzers CBA 1000 and CBA 2000 are designed to test circuit breakers and both have a built-in 200A microhmmeter. These analyzers can check technical parameters of the breaker like: open/close timing, dynamic and static measurement of the resistance of the main contacts, motion and speed through the comparison with the value specified by the manufacturer.

Electrical power plants are normally equipped with batteries of different types and regular test and measurement of battery voltage according to international standard are requested in order to assure the standby power for relays, circuit breakers, measuring equipment and telephone exchanges. ISA BTS 200 is the most reliable method to perform a discharging cycle periodically and it’s the perfect device to test and maintain battery systems.

A test of the efficiency of the metal oxide surge arresters installed on the high voltage transmission and distribution networks is needed on regular basis. SCAR 10 performs this test combining efficiency and high reliability.