VLF Series Very Low Frequency Cable Withstand Voltage Tester

 1. Easiest to use Fully automatic microcontroller
2. Built-in printer
3. True sine wave output
4. Real-time display of actual output waveform
5. Ergonomic, menu guided, large backlit LCD
6. Storage of test results for later retrieval and print.
7. Over voltage and current protected
8. Variable frequency 0.1Hz, 0.05Hz, 0.02 Hz
9. Data of current, voltage and waveform directly sampled at HV side.
10. AC testing does not degrade good cable insulation
11. Harmful space charges are not injected into the cable insulation
12. No traveling waves are generated during testing
13. Rugged and reliable design less prone to failure from transients

 1. Short circuit protected.
2. Status display of all important safety functions and messages.
3. Safe, easy to use operation with emergency off and key switch lock-out.
4. Fully integrated discharge circuit to safely ground the DUT after testing.
5. Zero start interlock.
6. Zero voltage switching.

 1. Input: 220 ± 10% Volts AC, 50/60 Hz, single phase.
2. Output-Voltage. 60KV
3. Output frequency: 0.1Hz, 0.05Hz, 0.02Hz.
4. Stability of frequency: Fluctuation < 0.5%
5. Measurement accuracy: ± 3%.
6. Positive and negative voltage peak errors: ≤ 3%.
7. Voltage waveform distortion: ≤ 5%
8. Construction: In two units: Controller and Booster...
9. Ambient conditions of use: Temperature Indoor and outdoor: -10oC to + 50oC.
10. Humidity: ≤ 85%

Our company has become one of the leading manufacturer of petroleum testing instrument and electrical testing instrument since 2009s’.

We have developed sales channels in many countries such as Malaysia,India,Germany,USA,Mexico,Saudi Arabia,South Africa and other countries worldwide. and we have gained great advantage and high reputation in international market.

We are making effort to develop together with customers from both domestic and abroad on the basis of reciprocity.Client,quality and service are our supreme target.

Pre-sale Service:

• Inquiry will be replied within 24 hours. 

• Welcome to visit our factory. 

• Technical datas and operation manual sent for evaluation.

After-sale Service:

• Training how to instal the machine, training how to use the machine at our factory;

• Engineers available to service machinery overseas at customers' cost;