Voltage breakdown strength is an electrical performance parameter of solid insulation materials used to evaluate their insulation ability under high electric fields. The test results of this parameter are affected by the type of material, thickness, environmental conditions, and testing method. To obtain reproducible and comparable test data, specialized equipment that meets relevant standards must be used.

The 100kV voltage breakdown tester developed by Beijing Huace Testing Instrument Co., Ltd. is suitable for testing the DC or AC breakdown voltage of solid insulation materials, and meets the requirements of GB/T 1408.1-2016 "Test Methods for Electrical Strength of Insulation Materials - Power Frequency Test", IEC 60243-1:2013, ASTM D149 and other standards.

1、 Breakdown detection and determination mechanism

The leakage current suddenly increases to the preset threshold;

The instantaneous drop of output voltage exceeds the set proportion;

After determining breakdown, the high-voltage output is cut off within 10 ms.

2、 Test mode and parameter settings

Support the following testing modes:

1. Breakdown experiment: The voltage rises at a constant rate until breakdown occurs;

2. Voltage endurance test: After boosting to the target value and maintaining it for a specified time, record whether breakdown occurs;

Step by step experiment: Step up and hold voltage in stages, used to study the historical effects of voltage.

Users can set parameters such as boost rate and voltage type through the 12 inch industrial touch screen.

3、 Electrode system and testing environment

Ball plate electrode;

Equal diameter electrode;

Unequal diameter electrodes;

Ball electrode.

Testing can be conducted in the following environments:

Insulating oil medium (transformer oil in accordance with GB/T 2536);

Dry air environment (relative humidity ≤ 60%).

Optional high temperature test chamber with a temperature range of 25 ℃ to 300 ℃, used for thermal electrical combined aging testing.

4、 Data recording and output

Each test automatically records the following data:

Breakdown voltage (kV);

Boosting time (s);

Leakage current time curve;

Environmental temperature and humidity (if equipped with sensors).

The test report can be exported in Excel and other formats, and supports Ethernet/Wi Fi.

5、 Structure and Design

Overcurrent protection;

Overvoltage protection;

Door interlock safety switch;

Emergency stop button.

The grounding terminal of the equipment should be separately led out, and the grounding resistance should not exceed 4 Ω. The power input is AC 220 V ± 10%, 50 Hz, equipped with D40 A circuit breaker (without leakage protection).

This device has been used for testing the breakdown performance of insulation media such as epoxy resin, cross-linked polyethylene (XLPE), polyimide film, mica composite materials, etc. It supports material aging research, quality control, and standard compliance verification.