Introduction
An automatic dielectric tester is an instrument used to measure the dielectric strength and the insulation properties of the insulating materials and the insulating oils, with the automatic operation, and it is used in the electrical, the power, the transformer, and the quality control industries. The dielectric tester measures the dielectric strength by the application of a specified voltage to the test specimen, which is increased until the breakdown occurs, and the breakdown voltage is measured, following the standard test methods, such as the IEC and the ASTM standards; the automatic dielectric tester consists of a high voltage generator, a test cell or the specimen holder, a voltage control and a measurement system, a breakdown detection system, and a control and a display unit, and it provides the dielectric strength, with the automatic operation and the data recording; the automatic dielectric tester is used for the testing of the insulating oils, for the testing of the insulating materials, such as the paper, the films, and the plastics, for the quality control, for the maintenance of the transformers and the electrical equipment, and for many other applications, and it is an essential instrument for the insulation testing. Automatic dielectric testers are used in the electrical industry, in the power industry, in the transformer industry, in the quality control, and for many other applications. With their automatic operation, automatic dielectric testers are essential for the dielectric strength measurement.
Automatic Dielectric Tester LADT-T2020
Automatic Dielectric Tester features measuring range within 5pF to 20pF. Fixed 2mm inter-electrode spacing ensures consistent and accurate dielectric loss measurements. Automatically sto...
Automatic Dielectric Tester LADT-T2010
Automatic Dielectric Tester features capacity of 2.0 kVA. Delivers high testing precision with strong anti-interference performance for accurate, stable results. Compact and lightweight ...
Standards
IEC 60156:2018-Insulating liquids-Determination of the breakdown voltage at power frequency-Test method
ASTM D877-Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk Electrodes
ASTM D1816-Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using VDE Electrodes
Complies with the above standards, but is not limited to them.
Features
1. Automatic dielectric tester for measuring dielectric strength of insulating materials and oils.
2. Programmable voltage ramp with automatic breakdown detection for safe, reproducible testing.
3. Suitable for transformer oil, insulating materials, cables and electrical components.
4. Includes high-voltage transformer, test cell, voltage regulator and control system.
5. Supports ASTM, IEC and GB standard test methods for dielectric strength.
FAQ
Q1: What testing scenarios is this tester mainly applied to?
A: The automatic dielectric tester is used in electrical utilities, transformer manufacturing, oil testing laboratories, cable production, insulating material manufacturers and research institutions to measure the dielectric strength (breakdown voltage) of insulating oils, solid insulating materials, cables and electrical components. It supports transformer oil quality testing for utility maintenance, insulating material type testing and quality control, cable insulation verification, electrical component safety testing, and research on dielectric materials. The automatic voltage ramp and breakdown detection ensure consistent test conditions and operator safety when working with high voltages. It is essential for electrical utilities, transformer manufacturers, testing laboratories and insulating material producers requiring reliable dielectric strength measurement for equipment maintenance, product quality control, regulatory compliance and material development, where insulation integrity directly affects electrical safety, equipment reliability and failure prevention.
Q2: What standards does the tester comply with?
A: The test method follows ASTM D877 and D1816 for insulating oils, IEC 60156 for insulating liquids, IEC 60243 for solid insulating materials, and corresponding GB/T standards. The instrument complies with relevant high-voltage safety standards. Test cell dimensions and voltage ramp rate should follow the standard specification.
Q3: What is the warranty period for the whole machine and key components?
A: The whole tester is covered by a 12-month warranty. The high-voltage transformer, control system and test cell are covered, while electrodes, oil cups and fuses are consumables or accessories. Damage from improper use, overvoltage or unauthorized repair is excluded. Extended service contracts are available for this high-voltage equipment.
Q4: Is this device difficult to operate? Is professional training required?
A: Operation requires trained electrical testing personnel familiar with high-voltage safety and dielectric test methods. We provide an operation manual and remote guidance. Proper sample preparation, test cell cleaning, voltage ramp setting and safety procedures are critical for accurate results and operator safety.
Q5: What is the typical lead-time for order delivery?
A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.
Q6: Is regular calibration required? What is the recommended calibration cycle?
A: Voltage calibration against a reference voltmeter recommended every 6-12 months. Test cell electrode gap and condition verified periodically. Full system performance verification with reference oils recommended for accredited laboratories. Safety interlocks tested regularly.
Q7: Are supporting consumables universal?
A: Test cells, electrodes and reference oils are available from specialized suppliers, though compatibility with the test method should be verified. Long-term consumable cost is moderate depending on testing volume.
Q8: Can I customize parameters or supporting accessories?
A: Customization includes maximum voltage, test cell type, automation level and standard compliance. Additional test cells and accessories can be ordered separately. Custom orders extend delivery lead-time.
Q9: Does the purchase include on-site installation and commissioning service?
A: Standard delivery includes the tester and accessories with an operation manual. On-site installation, commissioning, calibration and high-voltage safety training are strongly recommended and can be arranged at additional cost. Remote guidance is provided.
Q10: What types of samples are compatible with this equipment?
A: The tester measures dielectric strength of insulating oils, solid insulating materials, cables and electrical components within the voltage range and test cell capacity. Sample type determines the appropriate test cell and standard method. Contaminated or wet samples can produce low breakdown results. Users should follow proper sample preparation, ensure clean test cells, set the correct voltage ramp rate per the standard, and follow strict high-voltage safety procedures including proper grounding, interlock verification and personal protective equipment. Only qualified personnel should operate this high-voltage equipment.
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