HiPot & Substation Test Equipment
AC and DC hipot testers, 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
- 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-HD
Digital DC Hipot Testers
The 800PL-HD Series combines DC withstand testing with insulation resistance and polarization index measurement in one wheeled field case. Models 840PL-HD (40kV) and 880PL-HD (80kV), both at 10mA, with a 7-inch touchscreen, internal memory and HIPODirect wireless transfer. Rated for long duty cycle at one hour on, one hour off, for cable, switchgear, motors, generators and lift equipment. Key capabilities:
- 40 kV or 80 kV DC output at 10 mA — models 840PL-HD and 880PL-HD
- Insulation resistance from 10 kΩ to 40 GΩ, plus polarization index
- Voltage and current accuracy of ±1.5% of reading
- 7-inch color touchscreen with adjustable target voltage, ramp rate and dwell time
- Long duty cycle rated one hour on, one hour off
- Internal memory, USB transfer and HIPODirect wireless reporting
- Internal discharge solenoid, external interlock and emergency stop
- Wheeled 78 lb case for motors, generators, transformers, cable, switchgear and lift equipment
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
NEW PRODUCT ANNOUNCEMENT
Bucket Truck Leakage Current Meters
The LCM-W measures and monitors leakage current on bucket truck and aerial lift booms during dielectric testing. The meter mounts on the truck while the operator works from the bucket, so the 5-inch screen reads from over 30 feet away and the alarm is configurable up to 100 dBA. New from Hipotronics for 2026.
Key Capabilities
- 0 to 1000 µA measurement with auto-ranging at 0-100 µA and 0-1000 µA
- 0.5% accuracy per range, 0.1 µA resolution
- 50 Hz, 60 Hz and DC measurement
- 5-inch 800 x 480 display readable from over 30 feet
- Configurable multi-stage alarm thresholds, audible to 100 dBA
- Internal test result memory with CSV export
- Mobile app for remote viewing, configuration and report export
- CANopen and BLE interfaces, continuous duty, 5 lb with removable bracket
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 800PL-HD 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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