HVI VLF 34E AC Hipot Tester

The HVI VLF 34E AC Hipot Tester is a high-performance diagnostic instrument designed for advanced testing of medium- and high-voltage electrical equipment. Engineered with precision and reliability in mind, it provides accurate Very Low Frequency (VLF) AC testing, ensuring the integrity and safety of cables, transformers, switchgears, and other critical electrical assets.

Equipped with state-of-the-art technology, the HVI VLF 34E delivers stable AC output at low frequencies, minimizing stress on the insulation system while allowing thorough detection of insulation weaknesses and potential failure points. Its robust design and user-friendly interface make it suitable for both field and laboratory applications.

Key features:

High-Voltage VLF AC Testing: Enables effective testing of insulation in long cable runs and complex systems.
Precise Output Control: Adjustable voltage and frequency settings for tailored testing and reduced stress on equipment.
Advanced Safety Features: Over-voltage, over-current, and fault detection protections ensure operator safety.
Portable and Durable Design: Lightweight and rugged construction allows convenient field deployment.
Comprehensive Diagnostics: Capable of detecting partial discharges, insulation deterioration, and weaknesses before catastrophic failures occur.

Ideal for utility companies, industrial plants, and maintenance contractors, the HVI VLF 34E AC Hipot Tester helps ensure compliance with international electrical standards while enhancing equipment reliability and operational safety.

Technical Specifications

Standards Compliance

Meets IEEE 400.2, IEEE 400, IEC 60060‑3, CENELEC HD 620/621, VDE DIN 0276‑620/621 for cable testing and hipot procedures.

Input & Power

Input Voltage: 115–230 V AC, 50/60 Hz, up to 5 A max
Duty: Continuous operation

Output Capabilities

AC Output (VLF): 0–34 kV AC Peak / 0–24 kV AC RMS (sinusoidal)
DC Output: ±34 kV for proof or sheath testing
Square Wave Output: 34 kV for sheath testing

Frequency Range

Very Low Frequency Range: 0.01 Hz to 0.1 Hz (user selectable)

Load Capacitance Capability

0.5 µF @ 0.1 Hz @ 34 kV VLFA
1.0 µF @ 0.05 Hz @ 34 kV VLFA
5.0 µF @ 0.01 Hz @ 34 kV VLFA
Load rating increases at lower voltages

Metering & Calculations

Displays voltage in kV (peak or RMS)
Displays current in mA (peak or RMS)
Calculates capacitance, resistance, flashover voltage, and time‑to‑failure

Interface & Communication

USB port for exporting test data
Optional wireless interface for remote control and data upload

Physical & Case Details

Dimensions: ~19.7″ × 12″ × 18″ (500 × 305 × 458 mm)
Weight: ~45 lbs (21 kg)
Rugged hard case with extendable handle and wheels
Output Leads: 20′ HV lead and #2 ground lead

HVI VLF 34E

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