High Temperature Voltage Breakdown (Air Heating) Tester，air breakdown tester for industrial testing

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The Computer-Controlled Dielectric Breakdown Tester is a precision instrument designed to measure the withstand limit of insulating materials under high-voltage electric fields. Through precise computer-controlled voltage ramping, you can monitor real-time changes in voltage, current, and leakage current at the moment of breakdown. Featuring exceptional safety protection levels and data processing capabilities, this instrument automatically calculates dielectric strength ($E = U / d$) and plots complete breakdown curves, serving as a core tool for evaluating the reliability of electrical insulating materials.

Application

Mainly suitable for solid insulating materials such as wire bushings, resins and adhesives, impregnated fiber products, mica and its products, plastics, film products, ceramics and glass and other media at high temperature breakdown strength and voltage resistance time test, the instrument adopts computer control, can be used in the test process of various data for rapid and accurate acquisition, processing, and access, display, print.

Standards

GB1408.1-2016 "Test method for Electrical Strength of Insulating Materials"

GB1408.2-2016 "Electrical strength test methods for insulating materials - Part 2: Additional requirements for the application of DC voltage test"

JG795-2016 "Voltage Tester Verification Regulations"

Features

1. This equipment primarily consists of a step-up system (high-voltage transformer), measurement system, A/D converter, discharge system, electrodes, oil tank, electrode positioning frame, computer data processing system, and software.

2. The instrument employs computer control to rapidly and accurately collect and process various data during testing, enabling storage, display, and printing.

Technical Parameters

Parameter	Specification
Input Voltage	AC 220V 50Hz
Output Voltage	AC: 0 – 100kV; DC: 0 – 100kV
Output Power	10kVA
Measuring Range	AC: 10 – 100kV; DC: 10 – 100kV
Measurement Error	≤ 2%
Voltage Boost Rate	0.5 kV/s – 10 kV/s
Withstand Pressure Time	0 – 4H (German standard: 8H or 15H)
Leakage Current	1 – 30mA, freely settable via computer software
Power Supply	AC 220V ± 10% single-phase AC voltage, 50Hz ± 1% frequency
Test Environment	Temperature: 15 – 30°C; Relative Humidity: 0 – 85% (stable operation)
Test Temperature	Up to 300°C (note: "lucky temperature" appears to be a typo)
Test Medium	Air and benzyl silicone oil
Heating Box Size	Air: 900 mm × 900 mm × 900 mm; Oil: 200 mm × 200 mm × 150 mm

Accessories

Standard Accessories

The standard configuration includesinterchangeable test electrodes, afully enclosed high-voltage test chamber with safety interlock, and anadjustable sample holderto ensure stable and repeatable testing.

Anintegrated high-voltage power supply,industrial control computer with test software, andshielded high-voltage cablesare provided for automatic control, real-time monitoring, and safe operation.

Optional Accessories

Optional accessories are available to expand testing capability, includingadditional electrode sets, anoil bath test chamber for liquid insulation testing,external report printer, andUPS power supplyto ensure uninterrupted testing.

Test Procedures

1. The equipment must be installed with a dedicated protective grounding wire. Connecting the protective grounding wire primarily reduces the strong electromagnetic interference generated to the surrounding area when the test sample breaks down. It also prevents the control computer from malfunctioning.

2. DC test discharge alarm function: After the equipment completes a DC test, opening the test door will trigger an automatic alarm. The alarm will automatically cancel only after discharging the equipment using the discharge device provided on the equipment.

(Note: Failure to discharge after DC testing poses a risk to personnel safety. Electrodes must not be handled directly. This feature alerts users to discharge to prevent injury.)

3. The test discharge device is integrated with the main unit, replacing the previous separate discharge rod configuration.

4. The equipment's circuitry incorporates multiple protective measures, including: overcurrent protection, undervoltage protection, leakage protection, short-circuit protection, and DC test discharge alarm.

5. Six-level high-voltage safety power-off control:

① Main power switch

② High-voltage power-off switch (key switch)

③ Voltage regulator reset switch

④ Test chamber door safety switch

⑤ Input-side current-limiting circuit breaker for high-voltage transformer

⑥ Earth leakage circuit breaker

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