The HVA120 Test Set is a state-of-the-art cable testing device designed to evaluate the insulation of medium-voltage cables using very low frequency (VLF) AC high voltage. This compact yet powerful test set can output up to 85 kV RMS (120 kV peak) at 0.1 Hz, making it suitable for field-testing cables rated up to 69 kV class per IEEE 400.2 standards.
By applying a 0.1 Hz sinusoidal high voltage, the HVA120 Test Set can withstand-test cable insulation without the harmful effects of older DC hipot methods. IEEE and IEC standards recommend VLF AC testing for aged XLPE/EPR cables, as it detects severe defects without damaging healthy insulation. The HVA120 Test Set aligns with these global standards, meeting IEEE 400.2-2013 and IEC 60502-2 requirements for VLF testing.
What is the HVA120 Test Set and Why Use It?
The HVA120 Test Set from b2 Electronics/HV Diagnostics is a very low frequency high-voltage generator designed to test high-voltage insulation in the field. It is highly portable and capable of performing various tests on medium and high-voltage cable systems and related assets.
Utilities, wind farms, and industrial operations use the HVA120 Test Set to determine the condition of MV cables, especially in critical infrastructure. It operates in multiple modes—VLF withstand, DC hipot, sheath testing, and sheath fault location—making it an all-in-one high-voltage diagnostic tool.
VLF AC testing at 0.1 Hz enables effective insulation assessment without overstressing the dielectric. This method is now widely endorsed due to its accuracy and safety. For engineers and procurement managers, the HVA120 Test Set represents a trusted, standards-compliant solution for high-voltage field testing.
Why Choose the HVA120 Test Set?
- Lab-grade testing capability in the field
- Pure 0.1 Hz sinusoidal waveform, even on large capacitive loads
- Dry-type transformer for maintenance-free operation
- Integrated automation and data logging features
- Compact, portable design for use in remote environments
- Compatible with advanced diagnostics like Tan Delta and Partial Discharge
Key Features and Benefits of the HVA120 Test Set
Continuous Duty Cycle
The HVA120 Test Set is built for continuous operation at full output without overheating. Unlike older devices that require cool-down periods, this feature is vital for testing long cables or running multiple test sequences efficiently.
High Output Voltage & Standards Compliance
With a maximum output of 85 kV RMS (120 kV peak), the HVA120 Test Set can test cables up to 69 kV. It produces a pure sinusoidal waveform that aligns with IEEE 400.2-2013 and IEC 60502-2 standards. This ensures your tests are globally recognized and valid for commissioning, maintenance, and QA reporting.
Portable, Compact Design
Despite its high-voltage capabilities, the HVA120 Test Set weighs approximately 200 kg and is highly mobile. With its wheeled cart or transport base, crews can easily deploy it in substations, offshore wind farms, or remote utility sites.
Maintenance-Free “Dry” System
The HVA120 Test Set uses a dry-type transformer—no oil changes, no arcing contacts, and virtually no routine servicing. This dry design enhances long-term reliability and reduces total cost of ownership.
Advanced Safety Features
Safety is built-in: the HVA120 Test Set includes dual discharge devices, transient over-voltage protection, flashover detection, and emergency stop interlocks. These ensure safe and controlled operation for personnel and equipment.
Integrated Data Logging and Reporting
You can run automated tests and store results on the internal memory. The HVA120 Test Set enables USB download and real-time viewing via its built-in controller and screen. Reports can be generated easily with the included ControlCenter software, supporting project documentation and compliance.
Tan Delta & Partial Discharge Compatibility
Upgradable with Tan Delta and PD testing modules, the HVA120 Test Set supports advanced diagnostics. It can identify insulation degradation trends and local defects, making it a future-ready investment for condition-based monitoring.
Versatile Test Modes
The HVA120 Test Set supports:
- 0.1 Hz VLF AC withstand testing
- ±100 kV DC hipot testing
- Jacket/sheath integrity testing
- Sheath fault location
- Fault conditioning (burn down)
- Vacuum bottle testing
This versatility allows engineers to test cables, accessories, and HV components with a single device.
Everyday Use Cases for the HVA120 Test Set
VLF Withstand Testing
The HVA120 Test Set excels at VLF AC withstand testing, ideal for commissioning and scheduled maintenance of MV cables. It is especially useful for verifying inter-array cables in offshore wind farms or underground feeder cables before energization.
DC Hipot Testing (When Applicable)
Though not ideal for polymer-insulated cables, DC testing is still used on paper-insulated cables, motors, or surge arresters. The HVA120 Test Set’s ±100 kV DC mode covers these needs where applicable.
Cable Sheath (Jacket) Testing
The HVA120 Test Set can verify the outer sheath integrity of power cables, preventing future failures due to moisture ingress—a critical task in offshore and buried cable systems.
Sheath Fault Location and Pinpointing
With fault location accessories, the HVA120 Test Set can pinpoint the exact location of insulation faults. Its fault conditioning mode helps break down high-resistance faults, making them easier to locate and repair quickly.
Renting the HVA120 Test Set from Reynard High Voltage Solutions
Buying high-voltage test gear is not always the best option. Renting the HVA120 Test Set from Reynard provides a flexible, cost-effective alternative for temporary or project-based needs.
Use it for:
- Commissioning new cable systems
- Scheduled maintenance
- Diagnostic campaigns on offshore and onshore assets
Reynard offers rentals:
- With or without a certified technician
- With complete setup, operation, and test execution support
- Backed by full technical assistance and updated calibrations
The HVA120 Test Sets are kept in peak condition. We support compliance with IEEE 400.2 and IEC standards and assist with test planning, troubleshooting, and data reporting.
Related Resources and Links
Learn more about the official testing standards at the IEEE 400.2 Standard website.
Need more equipment? Contact us here.
Conclusion
The HVA120 Test Set is an advanced, portable, and compliant high-voltage testing system suitable for any medium-voltage cable testing need. It’s reliable, standards-aligned, and equipped for both basic and advanced diagnostics.
Renting the HVA120 Test Set from Reynard gives you the power and flexibility to complete your projects on time—without capital investment. Whether commissioning offshore cables or diagnosing insulation defects, trust the HVA120 Test Set to get the job done safely and efficiently.
Contact Reynard High Voltage Solutions today to reserve the HVA120 Test Set for your next high-voltage testing project.
