The AC Withstand Voltage Test Equipment is a specialized high-voltage testing device used to measure the insulation strength of electrical equipment. It is widely applied in the power system, industrial manufacturing, scientific research and testing, etc. Here are its main application scopes and typical scenarios:
Application scope of the AC withstand voltage test device
Verification of insulation performance of power equipment
Test the insulation strength of electrical equipment under the rated alternating high voltage, ensuring that it can withstand the overvoltage during operation.
Verify the reliability of the insulation design, materials and processes of the equipment.
Preventive tests and handover tests
Preventive test: Regularly inspect the insulation condition of operating equipment to prevent breakdown faults.
Commissioning test: After the installation or major overhaul of new equipment, it is verified whether the insulation meets the operation standards.
Fault Diagnosis and Quality Assessment
Through the pressure test, insulation defects (such as cracks, moisture absorption, aging, etc.) were discovered.
Used for product quality inspection upon leaving the factory, to ensure compliance with national standards (such as GB/T 16927, IEC 60060).
Typical application scenarios of the AC withstand voltage test device
The field of power systems
Transformer: Power frequency withstand voltage tests for windings, bushings, and tap changers.
High-voltage switchgear: Insulation tests for circuit breakers, disconnectors, and GIS (Gas Insulated Switchgear).
Power cables: AC withstand voltage tests for medium and high voltage cables (such as when a resonant withstand voltage system is used for long cables).
Transformers and capacitors: Insulation strength tests for voltage transformers (PT), current transformers (CT), and power capacitors.
Generator and Motor: Power frequency withstand voltage test of stator windings to assess the degree of insulation aging.
2. Industrial Manufacturing Sector
Electrical equipment manufacturer: Factory tests for products such as circuit breakers, insulators, lightning arresters, and distribution cabinets.
Rail Transit: High-voltage insulation tests for traction transformers and on-board electrical equipment.
New energy field: Insulation verification for photovoltaic inverters, wind power converters, and energy storage systems.
3. Research and Testing Institutions
Insulation material research: Evaluate the voltage resistance performance of new insulation materials (such as epoxy resin, silicone rubber).
High-voltage laboratory: Simulates test environments such as lightning strikes and operational overvoltages.
4. Specific Industry Applications
Petrochemical industry: Insulation safety inspection of explosion-proof electrical equipment.
In the underground coal mine: Moisture-proof and insulation tests for mine-used high-voltage switches and transformers.
Aerospace: Verification of the high-voltage tolerance capability of onboard electrical equipment.
Post time: Jun-16-2026