China Very Low Frequency High Voltage Tester Vlf High Voltage Generator Vlf Hipot Tester

VLF (Very Low Frequency) Testers are suitable for testing power cables, transformers, switchgear, rotating machinery and other electrical apparatus.Heater & Heat Exchanger








VLF Advantages:1. Safe Optical isolation technology,
2. Easiest to use Fully automatic microcontroller
3. H/L voltage closed loop negative feedback control
4. Built-in printer
5. Built-in protective resistors
6. True sine wave output
7. Real-time display of actual output waveform
8. Ergonomic, menu guided, large backlit LCD
9. Storage of test results for later retrieval and print.
10. Over voltage and current protected
11. Variable frequency 0.1Hz, 0.05Hz, 0.02 Hz; or 0.1Hz, 0.05Hz, 0.01Hz
12. Data of current, voltage and waveform directly sampled at HV side.
13. AC testing does not degrade good cable insulation
14. Harmful space charges are not injected into the cable insulation
15. No traveling waves are generated during testing
16. Rugged and reliable design less prone to failure from transients
17. Invatation Patent
18. Portable, only 1 control unit and 1 booster.
19. CE mark.
Safety Features1. 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.
Specifications1. Input: 220 ± 10% Volts AC, 50/60 Hz, single phase.
2. Output-Voltage: 30, 40, 50, 60, 70, 80, 90,100KV
3. Output frequency: 0.1Hz, 0.05Hz, 0.02Hz or 0.1Hz, 0.05Hz, 0.01Hz
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: -10º C to + 50º C.
10. Humidity: ≤ 85%AC testing of cables and electrical apparatus is now easier than ever!The product combines modern advanced digital variable frequency technology and micro computer control together, therefore, it can realize the full automatic voltage boost, stepTransmitter down, measurement and protection as well as the manual intervention in the process of automatic voltage boost. The full electronic design ensures the small size and light weight. The big LCD screen ensures the clear and visual display, and can display the output sinusoidal wave form. The printer outputs test reports.
Model noOutput
Voltage/
Current
(Peak)Load CapacityControl UnitBoosterPowerCapacitance/
FreuencyNet Dim.
(cm)Net Wt
(kg)Net Dim.
(cm)Net Wt
(kg)VLF-3030KV/29mA0.1 Hz, ≤1.1µF
0.05Hz, ≤2.2µF
0.01Hz, ≤11µF40x24x31634x16x30271000WVLF-4040KV/29mA0.1 Hz, ≤1.1µF
0.05Hz, ≤2.2µF
0.01Hz, ≤11µF40x24x31644x18x37451200WVLF-5050KV/59mA0.1 Hz, ≤1.1µF
0.05Hz, ≤2.2µF
0.01Hz, ≤11µF40x24x31644x19x37461500WVLF-6060KV/59mA0.1Hz ≤ 0.5uF
0.05Hz ≤ 1.0uF
0.01Hz ≤ 5.0uF40x24x316
45x20x38
482000WVLF-7070KV/59mA0.1Hz ≤ 0.5uF
0.05Hz ≤ 1.0uF
0.01Hz ≤ 5.0uF40x24x31645x20x38482500WVLF-8080KV/59mA0.1Hz ≤ 0.5uF
0.05Hz ≤ 1.0uF
0.01Hz ≤ 5.0uF40x24x31645x20x38503000WVLF-9090KV/59mA0.1Hz ≤ 0.5uF
0.05Hz ≤ 1.0uF
0.01Hz ≤ 5.0uF40x24x31646x22x38523500WVLF-100100KV/59mA0.1Hz ≤ 0.5uF
0.05Hz ≤ 1.0uF
0.01Hz ≤ 5.0uFTimer & Counter 40x24x31646x22x38524000WAccessaries
Sr no.DescrHeating, Refrigeration & Temperature Control iptionQuantity1Control unit1unit2Booster1unit3Capacitor (0.04µF)1unit4Discharge rod1unitCircuit Board 5HV Test/Connection cables1set6Earth cable1unit7Power supply cable1unit8Fuse2units9Printer paper2unit10Operating manual1unit11Factory's Calibration report1unit