HiPot & Substation Test Equipment
AC and DC hipot testers, VLF cable test systems, vacuum interrupter testers, insulating oil testers, and high voltage test equipment for utility and substation maintenance programs.
Insulation integrity is the foundation of electrical safety in every substation, cable system, and piece of high voltage apparatus. Proving that insulation can withstand operating voltage — and detecting degradation before it causes failure — requires high voltage test equipment that is accurate, reliable, and built for field conditions. ProgUSA supplies Hipotronics high voltage test equipment to utilities, electrical service providers, and industrial facilities across the United States, backed by application support, training, calibration, and repair.
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What HiPot and substation test equipment covers
- AC dielectric withstand (hipot) testing
- DC dielectric withstand (hipot) testing
- Very low frequency (VLF) cable testing
- Vacuum interrupter and vacuum bottle testing
- Insulating oil dielectric strength testing
- Work platform and bucket truck boom insulation testing
- Insulation resistance measurement
- Partial discharge detection
- Cable fault conditioning and sheath/jacket testing
- High voltage laboratory and production testing
Common applications
Where this equipment is used
- Utility substation switchgear and transformer insulation testing
- Medium and high voltage cable acceptance and maintenance testing
- Cable insulation condition assessment after repair or installation
- Vacuum interrupter integrity verification in switchgear
- Insulating oil quality testing for transformers and switchgear
- Work platform bucket truck boom compliance testing per ANSI/SIA A92.2
- Generator and rotating machine insulation testing
- Manufacturing quality control and type testing
- NETA and electrical service contractor field testing programs
- High voltage laboratory and R&D testing
880PL-DC
Digital DC Hipot Tester with VLF
The 880PL-DC is a modern digital solution combining DC hipot testing with VLF sine wave capability and multiple test modes in a single instrument. Includes VLF (0.1 Hz), DC (±), cable fault conditioning, and sheath/jacket testing modes. The 7-inch touchscreen digital interface provides accurate readings and operator safety features including interlock, emergency stop, and battery backup for display meters if input power is lost. Key capabilities:
- 80 kV DC hipot output
- VLF sine wave: 0 to 44 kV RMS / 62 kV peak at 0.1 Hz
- Combined VLF, DC, cable fault conditioning, and sheath/jacket testing modes
- Digital interface with 7-inch touchscreen
- Interlock, emergency stop, and battery backup safety features
- HIPODirect app for wireless data transfer
- Suited for medium voltage cable testing programs
AC/DC for Insulation Test
Hipotronics offers a range of modern Hipot testers for AC and DC testing in the lab or field. These rugged, portable testers feature automated test capabilities to improve test time and accuracy.
- Models 840PL-HD (40kV) and 880PL-HD (80kV): DC outputs with robust design and modern display for voltage and current, testing insulation strength of electrical apparatus. Measurements include output voltage, leakage current, insulation resistance (IR), and polarization index (PI).
- Model OC60-DI: Liquid dielectric tester up to 60kV AC, rugged and reliable. It includes test cells for ASTM D877 and ASTM D1816, a 7” digital color display screen, and automatic breakdown detection within 4 microseconds of the breakdown point. A 90kV version is also available.
- HVT-DI Series: AC Hipot testers available in 30kV, 60kV, and 100kV models for testing bucket trucks, aerial platforms, vacuum interrupters, breakers, switchgear, and other electrical apparatus. Features lightweight, rugged design and a 7” digital color display.
60HVTX-DI
AC Field Hipot Tester
The 60HVTX-DI is a modern digital solution for AC field testing of electrical apparatus. Lightweight, rugged, single-piece design with a 60 kV, 30 mA air-insulated transformer. Automatic and manual operating modes with a 7-inch touchscreen display. Wireless data transfer via the HIPODirect mobile app or USB connection. Key capabilities:
- 60 kV AC output, 30 mA
- Air-insulated transformer in single-piece rugged enclosure
- Automatic and manual test modes
- 7-inch touchscreen display
- Wireless data transfer via HIPODirect app
- USB data export
- Field-portable design
OC60-DI
Insulating Oil Dielectric Tester
The OC60-DI is an automatic, digital instrument for testing the dielectric strength of insulating liquids used in transformers, switchgear, and other electrical apparatus. Supports ASTM D877, ASTM D1816, and IEC 156 test standards. Tests up to 60 kV AC with a 7-inch touchscreen, pre-programmed test standards, and USB data transfer. Lightweight and portable for both field and laboratory use. Key capabilities:
- Automatic dielectric strength testing of insulating liquids
- Tests up to 60 kV AC
- Supports ASTM D877, ASTM D1816, and IEC 156 standards
- Pre-programmed test standards for fast setup
- 7-inch touchscreen with digital kilovoltmeter
- USB data transfer and wireless data export
- Lightweight and portable
SONEL — Insulation Resistance, Earth Testing & Multi-Function Field Instruments
ProgUSA is an authorized distributor for SONEL electrical test instruments. The SONEL product line complements the Hipotronics high voltage test equipment on this page — covering insulation resistance measurement, earth/ground resistance testing, and multi-function field instruments for complete substation and installation testing programs.
MIC Series
Insulation Resistance Meters
High-voltage megohmmeters for insulation testing of cables, transformers, motors, generators, and switchgear. Available in 1kV, 5kV, 10kV, and 15kV models with measurement range up to 20 TΩ. Built-in interference filtering maintains accuracy in electrically noisy field environments.
Key capabilities:
- Test voltages from 1kV to 15kV
- Measurement range up to 20 TΩ
- Automatic PI (Polarization Index) and DAR (Dielectric Absorption Ratio) calculation
- 3-phase adapter for simultaneous three-winding insulation tests
- Guard terminal to eliminate surface leakage errors
MIC-10k1 — 10kV megohmmeter for cable and high-voltage apparatus insulation testing
MIC-5050 — 5kV model for transformer, motor, and generator insulation testing
MIC-2510 — Up to 2.5kV / 10TΩ for general field insulation verification
MPI Series
Multi-Function Electrical Testers
Combined instruments for insulation resistance, earth resistance, loop impedance, low resistance, and power quality measurement in a single field-portable unit. Reduces instrument count for technicians performing complete installation testing and compliance verification.
Key capabilities:
- Insulation resistance testing up to 1kV
- Earth/ground resistance (3-pole method)
- Loop impedance and prospective short-circuit current
- RCD/GFCI testing
- Continuity and low resistance measurement
- Power quality parameters (voltage, current, harmonics, power factor)
- Photovoltaic installation testing option
MPI-540 — Full-featured multi-function tester for electrical installation and substation field work
MPI-540-PV — Adds IV curve tracing and PV-specific tests
MRU Series
Earth & Ground Resistance Testers
Three-pole, four-pole, and clamp-on earth resistance testers for verifying substation ground grid resistance, tower footing resistance, and system earthing continuity. The clamp-on method allows live measurement without disconnecting the ground conductor — no outage required.
Key capabilities:
- 3-pole and 4-pole fall-of-potential testing
- Clamp-on earth resistance measurement (live systems, no disconnection)
- Soil resistivity measurement
- GPS-assisted data logging for large ground grid programs (MRU-200 GPS)
- Selective measurement to isolate individual electrodes in multi-rod systems
MRU-30 — Compact 3/4-pole tester for routine earth resistance verification
MRU-200 GPS — Advanced GPS-enabled tester for large substation ground grid programs; highest accuracy on the market
Resources & Application Notes
Supporting documentation for hipot testing, insulation assessment, and Hipotronics instrument selection.
Resource links:
- Hipotronics HD100 Series Product Brochure
- Hipotronics 800 Series DC Hipot Brochure
- Hipotronics 880PL-DC Product Brochure
- Hipotronics OC60-DI Oil Tester Brochure
- ASTM D877 and D1816 insulating oil test standards reference
- ANSI/SIA A92.2 work platform testing reference
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