The HZG1101 Variable Frequency Series Resonance Test System is designed for AC withstand voltage testing of power cables, transformers, GIS, switchgear, generators, busbars and other high-voltage electrical equipment.
The system uses variable-frequency series resonance technology to generate high AC test voltage with relatively low input power. By adjusting the resonance frequency according to the capacitance of the test object, it provides stable and efficient AC withstand testing. The system consists of a variable-frequency power supply, excitation transformer, high-voltage reactor and capacitive voltage divider, with reactor quantity, test voltage and system capacity configurable to the test object.
Technical Parameters
| Parameter | Specification |
| Frequency Range | 20–300Hz |
| Variable-Frequency Power | 5.5–500kW |
| Reactor Working Voltage | Up to 1000kV |
| Reactor Inductance | 30–600H |
| Voltage Divider Range | 10–1000kV |
| System Quality Factor | Q > 50 |
| System Measurement Accuracy | ≤1.5% |
| Output Voltage Waveform Distortion | <1.0% |
| Continuous Working Time | 15min at rated conditions |
| Input Power Supply | 3-phase 380V ±5% / single-phase 220V ±5% |
Test voltage, capacity, reactor quantity and other specifications can be customized according to the test object and project requirements.
Application Scenarios
- Power Cable Testing — AC withstand testing of medium- and high-voltage cables
- Transformer Testing — AC withstand testing of power transformers
- GIS & Switchgear Testing — Testing of GIS, circuit breakers and switchgear
- Generator Testing — AC withstand testing of generator windings
- Substation Testing — Commissioning and maintenance of high-voltage equipment
- Field Testing — On-site AC withstand testing with modular equipment configuration
Key Features
Variable-Frequency Series Resonance
Generates high AC test voltage with relatively low input power by adjusting resonance frequency to the test object's capacitance.
Automatic Resonance Point Search
Automatically scans the selected frequency range and locates the resonance point.
Application-Based Configuration
Configured according to the actual test object rather than a fixed standard configuration.
Multiple Protection Functions
Overvoltage, overcurrent, detuning, flashover, and emergency stop protection.
Modular System Design
Reactor quantity, transformer capacity, and accessories can be combined to match different test voltage and load requirements.
OEM/ODM Customization
Logo & Branding
Your company logo and branding can be applied to the unit and its interface.
Appearance & Case Color
Case color and exterior finish can be adjusted to match your brand or product line.
Functional Parameters
Test voltage, system capacity, reactor configuration and other functional settings can be customized to your specification.
Software UI & Language
Control interface language and layout can be customized for your target market.
MOQ & Lead Time
MOQ of 1 unit for logo/appearance customization. Lead time is standard production plus 1–2 weeks for customized units.
Get Your Resonance Test Solution
Tell us your requirements and our engineers will recommend the right configuration.
- Test Object
- Required Test Voltage
- Cable Length / Capacitance
- Testing Standard
- Test Location
- Available Power Supply
Request a Quote
Why Choose HKVTEST
HKVTEST is a National High-Tech Enterprise with over 16 years of experience manufacturing electrical and power testing equipment, holding 10+ patents. Every system is factory-tested before shipment, and we provide complete technical support from equipment selection through configuration and operation, along with OEM/ODM customization. We've supplied testing equipment to customers across Rwanda, Tanzania, the Philippines, Vietnam, and India.
FAQ
What can the HZG1101 test?
It can be configured for AC withstand testing of power cables, transformers, GIS, switchgear, generators, busbars and other high-voltage equipment.
Can it automatically find the resonance point?
Yes. The system can automatically scan the selected frequency range and locate the resonance point.
How is the reactor configuration selected?
It depends mainly on the required test voltage, test object capacitance and operating frequency. For power cables, cable length is also an important factor.
What information is needed for a quotation?
The test object, required test voltage, cable length/capacitance, testing standard and test location.
Contact Us
Need Professional Advice?
Our engineers can recommend the right system configuration based on your test object, required test voltage, cable length or capacitance, and site conditions. Contact us for technical recommendations and product selection assistance.
WhatsApp: +86 180 7153 1810
Email: fionahuang60@gmail.com
Website: www.hkvtest.com
About HKVTEST
HKVTEST is the global brand of Wuhan Hongzhi Gaocetest Electrical Technology Co., Ltd., a National High-Tech Enterprise with over 16 years of experience in electrical testing equipment R&D and manufacturing, holding 10+ patents.
