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China, Chinese Power Frequency High Voltage AC Resonant Test Systems with Variable Inductance1 Industrial Products Supplier Manufacturer Details, price list catalog:
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Test InstrumentOther Test InstrumentAC Resonant TestResonant test systems
Xiamen Fivestar Electric Test Equipment Co., Ltd.
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Product DescriptionInductive Power Frequency AC Resonant Test SystemDescriptionCylinder modular type power frequency HV AC resonant test systems are designed to compensate capacitance in testing circuit precisely by adjusting inductance of HV reactors, and output continuous AC voltage of power frequency (50/60Hz), mainly for factory testing of high and ultra-high voltage cables, power transformers, GIS, etc. They use resonance between capacitive test object and inductive HV reactor of test system, adjust inductance of HV reactor to form a series resonant circuit with test load, resulting in an ideal sinusoidal resonance voltage. The natural resonance frequency of test circuit is matched to feed-in mains frequency 50/60 Hz by tuning inductance of HV reactor. The oil-cooled HV reactor is installed in a closed container made of steel and insulating cylinders. The module setup enables you to connect the reactors in series or in parallel for extending the range of voltage and/or current. The individual modules can be installed above or next to one another. As part of a series resonant circuit, these systems provide undistorted high voltage. And because the systems are designed to have high quality factor (Q), low input power is required (1/Q) which results in lower installation and operating costs.ApplicationThe inductive series resonant test device with power frequency is mainly used for AC withstand voltage test and partial discharge test of SF6 circuit breakers, GIS combined appliances, capacitive transformers, converter transformers, power cables, cable accessories and other large-capacity power equipment with voltage levels below 1000kV. With a suitable tuning inductor, it can resonate at a specified frequency and can be used as power frequency test equipment.Main application:1. For routine testing of high and ultra-high voltage cables up to 800 kV in accordance with IEC 60840 and IEC 62067.2. For inspection testing of high and ultra-high voltage cables and cable assemblies up to 1600 kV in accordance with IEC 60840 and IEC 62067.3. For applied voltage testing of power transformers up to 1600 kV in accordance with IEC 60076.4. For testing of gas-insulated switchgears up to 1600 kV in accordance with IEC 62271-203.5. For testing of voltage transformer including testing with higher frequencies and performing dynamic tests up to 1600 kV in accordance with IEC 60044.FeaturesThe main advantage of resonant test systems is the low power demand, because only the losses in the test circuit must be replaced from the power supply. A resonant test system is remarkably lighter, cheaper and more economic than an AC transformer test system and should be applied if the test objects are capacitive. In case of a disruptive discharge the test object is not destroyed, because the system goes out of resonance. In addition, due to their precise sine wave, series resonant test systems are well suited for HVAC tests with PD and tan delta measurements. 1. Low power demand due to high quality factor2. Lowest PD noise level3. Highest voltage by cascading of modules4. Large variety by single, series and parallel circuitries5. Low acoustic noise levelMain ConfigurationsPrimary power switchgearVoltage regulatorIsolation transformerPower filterExciter transformerVariable inductance HV reactorCapacitor dividerCoupling capacitorBlock impedanceComputer control and measure systemPower frequency peak value voltmeterConnection aluminum tubes, cables, wires etcPrinciple DiagramProducts Parameters1Rated current1 to 20A2Rated voltage120 to 1800kV3Frequency range50 to 60 Hz4ControlManual & Automatic Computer controlReferenceCompany ProfileXiamen Fivestar Electric Test Equipment Co., Ltd. XIAMEN FIVESTAR ELECTRIC TEST EQUIPMENT, operating in the electricity industry, specializes in developing and providing high-voltage testing equipment, including AC Dielectric, HV DC Voltage, Impulse Voltage, Impulse current and other special tests, rating up to 2400kV AC, 2000kV DC, 7200kV Impulse. We started cooperating with Shanghai Jiaotong University for producing and research of HV testing equipment used in electrical applications since 1980s. With a focus on long-term maintenance, laboratory services, and consulting/testing, we offer comprehensive solutions for research, manufacturing, or maintenance purposes.We are a leading manufacturer in the Electricity industry with a highly skilled R&D team. Our advanced technology allows us to produce high-quality products efficiently. We utilize state-of-the-art production equipment that ensures precision and reliability. Our strong R&D capabilities enable us to continuously innovate and develop cutting-edge solutions that meet the evolving demands of our industry. Our factory is a leading player in the Electricity industry, boasting a spacious area of 80000sqm with a 50m height highest rating full shielded HV test hall. We take pride in our exceptional quality inspection capabilities, ensuring that all products meet the highest standards. With a focus on production efficiency, we have invested in state-of-the-art equipment that enables us to maximize output while maintaining top-notch quality. Our production capacity is unmatched, allowing us to meet the demands of our esteemed clients efficiently and effectively.WorkshopTest Lab
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