

VLF & Hipot Testers
VLF SMT-30kV
A compact and lightweight VLF Hipot Tester with 30kV peak output, perfect for testing insulation on cables and motors rated up to 10kV. Built-in booster design simplifies field use, while automatic frequency adjustment and intelligent protection ensure accuracy and safety.
VLF SMT-40kV
This 40kV VLF tester offers precision insulation testing for electrical equipment up to 10kV. Designed for portability with a built-in booster, it features advanced safety functions and real-time HV-side sampling for reliable results in field or substation environments.
VLF SMT-50kV
Built for tougher jobs, the SMT-50kV model is ideal for testing cables and motors rated up to 15kV. Its robust 50kV peak output, combined with a 10μF load capacity and intelligent protection, makes it a dependable tool for high-performance dielectric testing.
VLF SMT-60kV
The 60kV model delivers enhanced testing capability for systems up to 25kV. Compact with a built-in booster and rated for up to 5μF loads, it’s perfect for demanding field operations requiring accurate AC/DC withstand voltage testing, insulation resistance, and dielectric loss measurements.
VLF SMT-80kV
Our most powerful model, the SMT-80kV is built for testing up to 35kV-class cables and equipment. It features a modular dual-booster system (2 × 40kV), making it ideal for high-capacitance loads. Includes full Tan Delta analysis, real-time feedback, and precise HV-side sampling.
VLF30/40kV
The VLF30/40kV model is designed for voltage testing of cables and motors rated up to 11kV (30kV unit) and 22kV (40kV unit). It features automatic frequency adjustment between 0.1Hz–0.01Hz and supports load capacities up to 10µF. With a compact controller (4kg) and booster (25kg), it's a portable and reliable solution for field testing.
VLF50kV
The VLF50kV tester is ideal for medium-voltage cable and motor testing up to 22kV. It offers precise automatic frequency variation from 0.1Hz to 0.01Hz and handles loads up to 10µF. The system includes a 4kg controller and a 25kg booster, making it easy to transport and use on-site.
VLF60kV
Optimized for cables and motors rated up to 33kV, the VLF60kV model delivers peak voltage testing with a load capacity of up to 5µF. It includes the same compact controller and booster setup as other models. With frequency flexibility and optional features like DC withstand and Tan Delta testing, it's suited for advanced diagnostics.
VLF80/90kV
The VLF80/90kV is engineered for high-voltage applications exceeding 35kV, offering dual-stage boosting and broad load handling — 10µF below 50kV and 4µF above. This model comes with a two-part booster (25kg + 45kg) and a 4kg controller for comprehensive field performance. It's well-suited for heavy-duty industrial testing with extended voltage range and modular expandability.
Tentech's HP30KV smart DC hipot is a cutting-edge dielectric test instrument designed with an emphasis on operator safety, versatility and ease of use. Complying with the most rigorous safety requirements, the system is divided into two modules, a control unit and a high voltage generation unit.
Tentech's HP60KV smart DC hipot is a cutting-edge dielectric test instrument designed with an emphasis on operator safety, versatility and ease of use. Complying with the most rigorous safety requirements, the system is divided into two modules, a control unit and a high voltage generation unit.
Tentech's HP80KV smart DC hipot is a cutting-edge dielectric test instrument designed with an emphasis on operator safety, versatility and ease of use. Complying with the most rigorous safety requirements, the system is divided into two modules, a control unit and a high voltage generation unit.
The VLF-60 is a Cable Insulation Tester made by KEP is a very low frequency high potential tester that
ensures efficient testing and fault location on medium voltage cables.
The HVT-70/50 and HVTS testers perform DC high-voltage testing of power cables (IEC 60502-2), power cables accessories (IEC 61442)
as well as AC high-voltage testing and
other dielectric materials with relatively low electric capacitance.
The HVTS-70/50 & HVT testers perform DC high-voltage testing & AC high-voltage testing of switchgear, reclosers, dielectric insulators, high-voltage dischargers (arresters), busbars and other dielectric materials with relatively low electric capacitance.
The HVTS-HP - High-power high-voltage testers of HVTSHP series are designed for testing an insulation of
high-voltage cables and other non-liquid dielectric materials with both AC and DC voltage up to 140 kV.