Looking for an industrial-grade AC DC Hipot Tester that handles both AC withstand testing and DC leakage current diagnostics in one system? Weshine offers customizable high-voltage testing units and high-capacity resonant systems engineered for field durability and precise measurement.

• 2-in-1 Cost Savings: Performs both AC and DC insulation tests with a single control unit and transformer setup.

• Custom Voltage & Capacity: Available up to 270kV+ with custom kVA ratings (135kVA, 270kVA, 540kVA) for heavy capacitive loads.

• Multiple Insulation Mediums: Choice of Dry-Type, Oil-Immersed, or SF6 Gas-Insulated high-voltage transformers.

• Direct Factory Supply: OEM/ODM customization, competitive direct pricing, and worldwide engineering support.

Contact us today to speak with our engineering experts, download technical datasheets, or get a factory quotation for your Power Testing Equipment.

AC DC Hipot Tester & Combination Hipot Test Set Solutions

An AC DC Hipot Tester is a essential high-voltage diagnostic instrument engineered to perform both alternating current (AC) and direct current (DC) dielectric stress tests within a single integrated system. By integrating dual-output capabilities, electrical testing teams can seamlessly transition between high-voltage AC withstand testing and DC insulation diagnostics without transporting multiple heavy testing units to remote substations or field sites.

As an established Electrical Test Equipment Manufacturer, Weshine designs each AC DC Hipot Test Set using advanced solid-state electronics, flexible testing transformers, and modular resonant architectures. Built to strict international engineering standards including IEC 60060 and IEEE C57, our multi-functional AC DC Withstand Voltage Tester systems deliver reliable dielectric breakdown detection, precise micro-ampere (µA) leakage current metering, and comprehensive operator safety interlocks.

Explore Weshine's full collection of industrial Electrical Testing Instruments to find the ideal dual-mode testing configuration for your facility.

Featured AC DC Combination & High-Capacity Hipot Testing Systems

Discover our versatile AC DC Hipot Test Set models and heavy-duty high-voltage testing systems built for field commissioning, substation maintenance, and high-capacitance industrial diagnostics:

• 135kVA/108kV Series Resonance Test System

  Compact high-voltage testing solution for distribution networks. Designed for withstand voltage testing on 10kV / 35kV power cables, substations, switchgear, and transformers requiring high voltage output combined with lightweight power supply input.

• 270kVA/108kV Series Resonance Test System

  Versatile test set for high-capacity power apparatus. Ideal for long MV/HV underground cable networks, GIS switchgear, and large power transformers requiring stable sinusoidal waveform output and high kVA power capacity.

• 540kVA/270kV Series Resonance Test System

  Heavy-duty extra-high-voltage (EHV) test system. Engineered for factory acceptance testing (FAT), 110kV/220kV power cable commissioning, and large generator insulation evaluations under extreme electrical stress.

Key Technical Advantages of Weshine AC DC Hipot Testers

Weshine dual-mode AC DC Withstand Voltage Tester systems combine operational flexibility with industrial-grade reliability to maximize return on investment:

• Dual AC/DC Output Capability: Easily toggle between AC sinusoidal voltage testing and rectified DC voltage testing, eliminating the need to purchase and transport two separate high-voltage power units.

• Flexible Transformer Architecture: Choose from Dry-Type (maintenance-free), Oil-Immersed (high heat dissipation for heavy duty cycles), or SF6 Gas-Insulated (ultra-lightweight for remote field work) testing transformers.

• Integrated High-Precision Rectifier: High-reliability high-voltage silicon rectifying circuits ensure smooth DC conversion with low ripple voltage factor (≤ 0.5%).

• Comprehensive Operator Protection: Includes zero-voltage start interlocks, fast automatic over-current tripping, adjustable over-voltage limits, and continuous grounding terminal safety monitoring.

• Digital Microcontroller Console: Features digital displays for output voltage, AC load current, and micro-ampere (µA) DC leakage current, with automated timing and audible alarm alerts.

AC DC Hipot Tester vs. Single-Function Testers

Comparing combination testers against dedicated single-function units:

Parameter	AC DC Hipot Tester	Dedicated AC Tester	Dedicated DC Tester
Testing Capability	Dual Mode (AC & DC)	AC Only	DC Only
Capital Expenditure	Lower (One unit for two test types)	Higher (If DC is also needed)	Higher (If AC is also needed)
Portability	High (Single control unit & transformer)	Moderate to Low	High
Primary Applications	Comprehensive labs, maintenance teams, multi-purpose testing	Transformers, switchgear, insulators	Power cables, surge arresters, DC equipment

Primary Applications of AC DC Hipot Test Set Systems

An AC DC Hipot Tester is widely deployed across the electrical equipment lifecycle:

1. Multi-Purpose Maintenance Laboratories

Allows service workshops and calibration labs to perform routine insulation checks on various incoming equipment using a single integrated AC DC Withstand Voltage Tester.

2. Substation Commissioning & Acceptance Testing

Field technicians can perform AC dielectric testing on switchgear and transformers, then switch to DC testing for surge arresters or DC auxiliary lines using the same AC DC Hipot Test Set.

3. Electrical Apparatus Manufacturing Quality Control

Provides cost-effective factory acceptance testing (FAT) for manufacturers producing a mix of AC and DC electrical components, motors, and bushings.

Frequently Asked Questions About AC DC Hipot Testers

Q1: How does an AC DC Hipot Tester switch between AC and DC modes?

Weshine AC/DC testing transformers feature a removable or switchable high-voltage silicon rectifying stick. Inserting or switching on the rectifying circuit converts the AC high voltage to smooth DC voltage output within the same AC DC Hipot Test Set.

Q2: What is the main advantage of buying an AC DC Withstand Voltage Tester?

The main benefit is cost efficiency and versatility. Instead of buying two separate high-voltage systems, an AC DC Hipot Tester performs both AC withstand tests and DC leakage current measurements with one control unit and transformer setup.

Q3: Is the DC output quality of an AC DC Hipot Test Set suitable for surge arrester testing?

Yes. Weshine combination sets utilize high-grade silicon rectifier stacks and filtering mechanisms to ensure stable DC output suitable for measuring leakage current and testing zinc oxide (ZnO) surge arresters.