Product Details

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Product Introduction

Equipped with special filters and multi-gear adjustable compensation inductors, the voltage waveform distortion is less than 5% under different loads, and the input side power supply is relatively reduced, making the test bench smaller and lighter.

Simple operation, reliable performance, and can well meet the needs of induced withstand voltage tests for transformers and instrument transformers.

The entire device adopts an integrated and split design, making operation more convenient and transportation easier.

Product Brief:

Designed according to China's standard "GB311.1 - 97", it is an electromagnetic triple frequency induced withstand voltage device planned to meet the requirements of power frequency induced withstand voltage tests for high-voltage instrument transformers or transformers in power systems. It can perform induced withstand voltage tests on inter-turn, inter-layer, inter-section, and inter-phase insulation of transformer or instrument transformer windings. This product is widely used for power equipment such as instrument transformers, transformers, and generators of various voltage levels.

Using a three-phase five-limb structure, the core operating flux density is selected above the saturation flux density, so that the vector sum of the fundamental electromotive force (positive sequence vector) in the secondary winding connected in an open delta is zero, and the same-phase 150Hz third harmonic appears at the open ends.

Product Operation:

1. Connect the power supply, close the air switch, and the green indicator light of the control device will turn on.

2. Return the voltage regulator to zero, press the red button, and the triple frequency generator will start running, waiting for voltage increase.

3. Adjust the voltage regulator to the required test voltage and closely monitor the current and voltage values in the control device, and make detailed records.

4. If during the test, the test object experiences inter-turn, inter-layer, inter-section, or inter-phase insulation breakdown, the test current in the control circuit will increase, and the relay can immediately trip and cut off the power.

5. After the test, return the voltage regulator to zero.



Note: The above information and technical parameters are compiled and released by Yangzhou Dary Electric Co., Ltd.