Dual Canopy Mechanic Electrical Engineering Co., Ltd. is one of the leading manufacturers and suppliers of AC Resonant Test System in China. Please feel free to wholesale discount products for sale here and get quotation from our factory. Customized orders are welcome.
AC Resonant Test System Products Description
The AC Resonant HV Hipot Tester (Variable Frequency Series Resonant Test System) is designed for AC withstand voltage testing of cross-linked cables, transformers, GIS, and generators. Features reduced power capacity (1/Q), portable design, pure sine wave output, and full protection. Factory direct, competitive price & fast delivery.
This device is primarily designed for AC voltage withstand tests of:
Cross-linked polyethylene (XLPE) cables (10kV–500kV)
Hydro generators and main transformers
Busbars, GIS (Gas Insulated Switchgear), SF6 switches
Insulators, CT/PT, and other high-voltage capacitive apparatus
It is perfectly suited for preventive maintenance, commissioning, and acceptance testing at regional, city, and county power grid levels.
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Name |
AC Resonant Test System HV Hipot Tester | ||
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Frequency |
30~300HZ |
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Protection |
Over-Current, Over-Voltage, Flash-Over |
Mode |
Automatic and Manual Operation Mode |
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Tested Object |
Cable, Gis, Transformer, Gil, Ect |
Power Source |
220V/380V, 10 %Single Phase, 50Hz |
AC Resonant Test System
Frequency Series Resonant Test System / AC Resonant Test System
The AC Frequency Conversion Series Resonance Test Device is a state-of-the-art high-voltage testing equipment that utilizes the series resonance principle to perform AC withstand voltage tests on large-capacity capacitive equipment. It is widely recognized as the ideal solution for on-site and laboratory testing in power utilities, installation companies, and high-voltage testing departments.
Product Composition
The complete system mainly consists of:
Variable frequency control power supply
Excitation transformer
Resonant reactor(s) (dry-type epoxy cast or oil-immersed)
Capacitive voltage divider
Optional compensation capacitor
All components are modular, lightweight, and designed for easy transportation and on-site assembly.
Where is the equipment used?
1. Handover and Acceptance of Newly Constructed Projects: Before commissioning, newly laid high-voltage power cables must undergo AC withstand voltage testing according to the national standard (GB 50150). Variable frequency series resonant testing equipment can meet the testing requirements of cables of different voltage levels.
2. Periodic Preventive Testing: Operating power equipment must undergo periodic insulation testing according to the "Preventive Testing Procedures for Power Equipment" (DL/T 596) to detect insulation defects early and prevent accidents.
3. Fault Diagnosis and Troubleshooting: When equipment exhibits insulation abnormalities or operational faults, the resonant withstand voltage test is used to determine the insulation condition, providing a basis for maintenance decisions.
4. Equipment Factory Inspection: Power equipment manufacturers use this equipment to conduct type tests and routine tests on their products before shipment to ensure factory quality.
5. Scientific Research and Teaching: Universities and research institutions use this equipment for high-voltage insulation technology research, experimental teaching, and insulation performance evaluation of new materials and processes.
What are the main features of the equipment?
Overvoltage protection: Automatically cuts off output when test voltage exceeds set value.
Overcurrent protection: Millisecond-level rapid power cut-off in case of test sample breakdown or flashover.
Zero-position start protection: Prevents closing under voltage, ensuring operational safety.
🔍 Free Technical Consultation
Our team of professional technical engineers is always ready to provide you with free telephone, online or on-site technical consultation services to answer all your questions about the selection, principle, and application of variable frequency series resonant test equipment.
🏭 Factory Tour and Prototype Demonstration.
We welcome customers to visit our production base to inspect our product manufacturing processes and quality control system. We can arrange on-site prototype demonstrations, allowing you to experience the superior performance of our equipment firsthand.
📞 Pre-sales Hotline: [+8613603329412]
📧 Email: [dylan@dualcanopy.com]
💬 24-Hour Online Response
FAQ
Q: What are the advantages of a variable frequency series resonant test setup compared to traditional power frequency withstand voltage test equipment?
A: The variable frequency series resonant test setup has several significant advantages over traditional power frequency test transformers: Small size and light weight: Only 1/5 to 1/10 the size of traditional equipment, facilitating on-site handling and transportation. Low power requirement: Utilizing the resonance principle, the required power capacity is only 1/Q of the test capacity (Q value is typically 30-80), significantly reducing the requirements for on-site power supply. Good output waveform: The output is a pure sine wave in the resonant state, with low waveform distortion, more closely resembling the actual operating conditions of the equipment. High safety: When the test sample breaks down, the resonance condition is disrupted, and the voltage drops rapidly, preventing excessive damage to the test sample. Wide applicability: Modular design allows it to adapt to test requirements of different voltage levels and capacities.
Q: What are the requirements for transporting and handling the equipment?
A: The variable frequency series resonant device adopts a modular design, with each module (variable frequency power supply, reactor, voltage divider, compensation capacitor, etc.) packaged independently. The weight of a single module is usually controlled within 50kg (except for some large-capacity reactors), and can be handled by 1-2 people.
Q: What is the warranty period for your equipment? What happens after the warranty period?
A: Our company's variable frequency series resonant test equipment offers a 24-month free warranty (industry-leading level) from the date of acceptance. During the warranty period, any malfunctions caused by product quality issues will be repaired or have parts replaced free of charge.
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