Superior Operating Equivalence
Replicates real-world operating stress as effectively as traditional power-frequency and variable-frequency AC methods, whereas DC withstand testing provides poor real-world equivalence.
Cable Fault System
VLF-90 Portable Hipot Test System
Portable Insulation Testing and Commissioning
Ultra-Low Frequency AC Withstand Test System
Go to Our Services >>Digital ControlFrequency Conversion Technology
Multiple ProtectionOver-voltage & Overcurrent
0.1 to 0.01HzMulti-frequency Selection
CompactPortable Design
VLF-90 Introduction Video
Introduction
Product Overview
VLF-90 Portable Hipot Test System
The Tanbos VLF-90 Portable Hipot Test System is a compact, ultra-low frequency high-voltage AC withstand test set engineered for insulation testing and commissioning of medium- and high-voltage power cables.
Withstand voltage testing spans AC and DC methods, with 0.1Hz Ultra-Low Frequency (VLF) recognised by international standards as the leading AC technique. Powered by an ARM7 single-chip processor, high-speed AD acquisition and a 7-inch touchscreen, the VLF-90kV delivers accurate 0.1Hz AC testing that simulates real operating conditions while maximising portability, speed and efficiency.
Digital frequency conversion and microcomputer control manage voltage rise, voltage reduction, measurement and protection. Over-voltage and overcurrent protection on both high- and low-voltage sides provide a rapid protective response.
Key Applications
Top Features
Minimal Insulation Strain
Keeps destructive stress and permanent degradation risks remarkably low, preventing the severe space-charge damage commonly caused by DC withstand testing.
Ultra-Portable Footprint
Combines high-voltage performance with a light, compact enclosure that allows transport and single-operator field deployment.
Fully Automated Test Process
Self-inspection → boosting → constant-amplitude output → shutdown. Set parameters on the controller, follow voltage-boosting and test-passed prompts, then view and print test data.
Specifications
Product Model
VLF-90 Portable Hipot Test System
| TECHNICAL DATA | |
|---|---|
| Output voltage | 4 to 90 kV (Peak) |
| Frequency | 0.1Hz 、 0.05Hz 、 0.02Hz 、 0.01Hz |
| Load | 0.1Hz, 0.5µF max 0.05Hz, 1.1µF max 0.02Hz, 2.2µF max 0.01Hz, 5.5uF max |
| Voltage waveform distortion | ≤5 ％ |
| Operating temperature | -10℃ ～ +40℃ |
| Storage temperature | -30°C-60°C |
| Humidity | ≤85 ％ RH |
| Net weight | Controller: 5.8kg Booster: 55kg |
