Resonant Test System

Testing insulation integrity is essential for all high voltage apparatus. Standard AC test systems have been able to provide a solution for some applications, but when certain apparatus have much higher voltage and current requirements a straight AC test system may not be sufficient. In order to limit input power requirements a resonant test system requires a capacitive test object and a variable core (variable reactor. A resonant test system is designed with means to adjust the inductance to precisely compensate for the capacitance in the high voltage circuit thereby tuning the system to resonance. The main advantage to this is that very low (real) input power is required for large output (reactive) power.

Another solution which also has low input power requirements and high output power is a variable frequency series resonant test system. These systems are typically used for testing GIS or cable in the field since they are smaller in size than a variable core resonant test system. The variable frequency systems are tuned by frequency variation instead of changing the inductance of the test system. The main advantage to these systems is that the steel core is fixed so it can be smaller, thus making the system as a whole smaller and lighter for better portability.

• Modular Series Resonant
• Tank Series Resonant

What Our Customers Say About Us

"We are happy with the performance of the test equipment sourced from Hipotronics from 2007 onwards. We have a complete range of medium voltage test sets like the 1000 kVA HV Resonant Test Set (with screened enclosure), 600KV Impulse Voltage Generator, Tan-Delta measurement set, etc. from Hipotronics."