AC test transformer system

Product Introduction

AC test transformer system generates a continuously adjustable AC test voltage. It is used for GIS highvoltage switchgears, cables and accessories, instrument transformers, power transformers, high~voltage circuit breakers, coupling capacitors, capacitive bushings, surge arresters, insulators, electrical porcelains and other electrical components in AC voltage withstand, partial discharge test and other scientific research.

When the high voltage test needs to be provided a resistive current; AC voltage test system composed by AC test transformer is the only available power; especially for the test that requires a stable voltage, even the test load changes (severe corona, wet & pollution tests) or inductive load. Therefore, the AC test transformer is common equipment equipped in all the testing stations and laboratories.

Product Features

• Meet the low partial discharge measurement test requirements

• Modular structure, small space requirement

• Low impedance, widely use range

• Computer-controlled measuring system, easy to operate

• Perfect protection circuit to ensure the safety of personnel and equipment

• Surge and transient protection for sensitive electronic components

Technical Parameter

The system consists of:

• Primary power supply side main components are switchgear and regulator; the regulator generates continuous adjustable voltage as the input power for AC test transformer.

• The main component of the AC transformer test system is the test transformer; contains a single test transformer or several transformers in series.

• For capacitive test object, at the low~voltage side (few at high~voltage side) equipped with compensating reactor.

• The harmonic filter can be placed at the low voltage side.

• Divider can be used for voltage measurement and partial discharge detection; HV filter (including the isolation impedance and coupling capacitors) can be used for lower partial discharge measurement.

• A standard capacitor is needed when in capacitance or dielectric loss test.

• The overvoltage quick protection device can effectively inhibit the overvoltage generated by the breakdown of the test object. The state~of~art computer~aided control system provides a friendly user interface.