HVA90 VLF High Voltage Test Set

The HVA90 VLF High Voltage Test Set is the most advanced HV test system available. It is also the lightest, most compact instrument of its type on the market. The HVA90 has the highest power-to-weight ratio of any comparable unit available.

There is no need to carry two pieces of equipment around and then interconnect them! Apart from the variable frequency VLF output, the operator can also select dual-polarity DC and cable jacket or sheath testing output modes.

The HVA90 can test 1μF (approximately 3,300 m / 11,000 ft of cable) at 0.1Hz and 64kV RMS. The output frequency can also be reduced, allowing even larger capacitance loads to be tested. At 0.01Hz, approx. 33,000m / 100,000ft of cable can be tested.

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• Tests MV and transmission cable networks up to 69kV
• Capacity to test up to 10μF (100,000ft/30km)
• The compact single-piece design weighs 280 lbs (127kg)
• Fully automated test functionality
• Real-time oscilloscope display for monitoring
• RMS metering of current and voltage
• Output frequency optimisation for adaptable testing
• Measures insulation resistance and capacitance
• Internal storage for test reports
• The pure sinusoidal output voltage, load-independent
• Sheath fault pinpointing with additional locator
• Easily exchangeable high voltage test lead
• Breakdown voltage and load detection capabilities
• Programmable test sequences with a custom software tool

• Input Voltage: 210-265V 50Hz
• Output Voltage: Sinusoidal: 0-90 kV peak, Symmetrical, 64kV rms DC: ± 0-90 kV Squarewave: 90kV Accuracy ± 1% Resolution 0,1kV
• Output Current: 0-40mA (Resolution 1 μA) Accuracy ± 1%
• Resistance Range: 0.1 MΩ ….5 GΩ
• Output Frequency: 0.01….0.1Hz in steps of 0.01Hz (default 0.1Hz) – auto frequency selection
• Output Load: 1.0μF @ 0.1Hz @ 64kV RMS (Approx 3,300m / 11,000ft of cable)* 1,2μF @ 0.1Hz @ 57kV RMS (Approx 3,600m / 12,000ft of cable)* 10μF @ 0.01 Hz @ 64kV RMS (Approx 33,000m / 100,000ft of cable)* 10μF Maximum Capacitance * Based on a typical cable: 100pF/ft or 300pF/m
• Output Modes: AC (VLF) Symmetrical and load-independent across full range DC (plus or negative polarity) Burn / Fault Condition or Fault Trip Mode Jacket / Sheath Testing
• Memory Minimum: 50 Test Records Stored in non-volatile built-in memory
• Dimensions: (LXWXH) 650 x 445 x 610mm / 25,6”x17.5”x24”, also as 19″ version available
• Weight: 127 kg / 280 lbs

• Simplifies testing with an all-in-one design.
• Reduces transportation effort with its lightweight and compact build.
• Enhances safety and reliability in HV system diagnosis.
• Streamlines operations with automated test functions and real-time monitoring.
• Accommodates high-capacity cables, ensuring comprehensive coverage.

• Testing medium voltage cable networks — The HVA90 is highly effective in testing medium voltage (MV) cables, including those used in electrical grid systems and industrial settings. Its high capacity testing up to 69kV ensures accurate diagnosis and maintenance of these crucial power transmission lines.
• Assessing transmission cable networks — Ideal for transmission cable networks, the HVA90 can test long stretches up to 30 km, providing reliability in large-scale electrical distribution. Its ability to handle high-capacity cables makes it invaluable for maintaining the integrity of national grid systems.
• Industrial electrical system maintenance — In industrial settings, the HVA90’s automated testing and real-time monitoring capabilities streamline the maintenance process of electrical systems. This provides operational safety and efficiency in environments where reliable power is critical to production.
• Cable fault detection and diagnosis — Utilising its sheath fault pinpointing feature, the HVA90 is helpful in detecting and diagnosing faults in cable sheaths. This application is vital for preventing cable failures, which can lead to significant downtime and safety hazards in various sectors.
• Customised cable testing in research and development — The HVA90’s programmable test sequences and software tools make it ideal for research and development purposes. It allows for tailored testing of cables in innovative electrical projects, aiding in developing new technologies and ensuring their safety and efficacy.