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High-voltage hipot tester YDQDCAC
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Characteristics
- Options
- DC, AC, high-voltage
Description
Product Overview
Product Key features
Service conditions of AC DC Hipot Tester
Allowed running time of AC DC Hipot Test Set
Working Principle of YDQ AC DC Hipot Test Equipment
Technical specifications
What testing projects is the AC/DC hipot test set suitable for?
Mainly used for:
- Inflatable SF6 AC/DC Hipot Test Set YDQ series is a portable high-voltage test transformer system composed of an SF6-insulated inflatable test transformer and a separate control cabinet, designed for power-frequency AC and DC withstand testing of cables, electrical components and insulating materials in field conditions.
Product Key features
- Compact, lightweight inflatable transformer: significant mass reduction vs. oil-immersed units (typical ranges indicated: 20%–65% depending on class; other references note 40%–65%).
- Oil-free design: no oil or grease required, minimizing routine maintenance and eliminating oil contamination risks.
- Field-capable: weather-resistant design, stable during transport and suitable for on-site testing operations.
- High insulation strength and low corona: improved dielectric performance with minimal corona discharge under rated voltage.
- AC and DC output capability: provides power-frequency AC testing and DC output via high-voltage rectification.
Service conditions of AC DC Hipot Tester
- Ambient temperature: operating range -20 °C to +40 °C.
- Maximum relative humidity: less than 85% at 25 °C.
- Installation site: avoid locations with steam, corrosive gases, chemical dust, dirt or explosive media that could degrade the insulating gas.
- Operation notes: increase input voltage gradually; install sufficient series protection resistor on the high-voltage output; perform switching under appropriate high-voltage protection and interlocks.
Allowed running time of AC DC Hipot Test Set
- Under rated capacity and rated voltage: continuous operation should not exceed 30 minutes per interval; recommended rest interval 5–10 times the working time to ensure cooling.
- At rated voltage with up to 2/3 rated current: long-term continuous operation is permissible.
Working Principle of YDQ AC DC Hipot Test Equipment
- Input power is supplied to the control cabinet with over-current trip and zero-interlock protection; the primary winding of the YDQ transformer is energized and, by electromagnetic induction and turns-ratio transformation, a high-voltage AC is produced on the secondary.
- DC high voltage is obtained by rectifying the high-frequency/high-voltage secondary via a high-voltage silicon rectifier stack and regulator/filter capacitors; the HF RMS amplitude and rectifier arrangement provide the required DC output.
Technical specifications
- voltage classes:10kV~300kV
- range of capacity:1~500kVA
- Impedance voltage: < 8%
- No-load current: < 7%
- product classification:interflow、ac/dc、Ac cascade、Ac-dc cascade
What testing projects is the AC/DC hipot test set suitable for?
Mainly used for:
- Power Transformer Power Frequency Withstand Voltage Test
- Cable AC voltage withstand test
- Voltage withstand test of switchgear
- GIS equipment withstand voltage test
- Insulation test for motors and capacitors
- Factory delivery and on-site handover test of power equipment
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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.