Features Resonant test systems are applied for the generation of high- voltage AC of power frequency for routine, type and develop- ment testing of capacitive test objects. There are two types: steel tank type WR and modular insulating case type WRM. The main advantage of the resonant test systems is the low power demand because only the losses in the test circuit must be covered by the power supply. Therefore a resonant test system is remarkably lighter and more economic than an AC transformer test system. The resonant test systems are characterized by a low PD noise level due to their sophisticated design. The test power and the test voltage can be adapted to customer’s needs and can be increased by a parallel and series connection of reac- tors, as well as by using a virtual electric shaft. The customized design of the test systems makes it possible to arrange the HV components in a space-saving manner. APPLICATION The test systems enable testing according to IEC standards, other international standards and customer’s specifications Main applications are: Cable testing on delivery length, cable samples and cable accessories with type WR or WRM Applied voltage tests for transformer testing with type WRM Current and voltage transformer testing (CTs and VTs) with type WRM Capacitor testing with type WR Generator and motor testing with type WR GIS/GIL and accessories testing with type WRM Because of their precise sine wave, series resonant test sys- tems are well suited for HVAC tests with PD and tan delta measurements. Resonant test systems also enable tests at other frequencies, e.g. for instrument transformers, or dyna- mic tests with fast voltage changes for capacitors.
Category:
High Voltage Lab Equipment