Jiangsu Bestech Industrial Co., Ltd. , https://www.jsbestmachine.com
Testing cables, transformers, switchgear,
Rotating machinery, and other
Electrical apparatus.
VLF Advantage
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
Safety Features
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.
Specifications
1. Input: 110/220 ± 10% Volts AC, 50/60 Hz, single phase.
2. Output-Voltage: 70KV
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: -10 to + 50ºC.
10. Humidity: ≤ 85%.
Model Output
Voltage/Current
(Peak)Load Capacity
Control Unit
Booster
FuseÂ
Frequency/Capacitance
Net Dim.
(cm)Net Wt
(kg)Net Dim.
(cm) Net Wt
(kg)
VLF-30/1.1
 30KV/29mA
   0.1Hz ≤ 1.1uF
   0.05Hz ≤ 2.2uF
   0.02Hz ≤ 5.5uF28×37×22
5
33×18×34
25
8A
VLF-40/1.1
 40KV/29mA
   0.1Hz ≤ 1.1uF
   0.05Hz ≤ 2.2uF
   0.02Hz ≤ 5.5uF28×37×22
5
35×20×36
45
8A
VLF-50/1.1
 50KV/59mA
   0.1Hz ≤ 1.1uF
   0.05Hz ≤ 2.2uF
   0.02Hz ≤ 5.5uF 28×37×22
5
37×24×39
45
10A
VLF-60/1.1
 60KV/59mA
   0.1Hz ≤ 1.1uF
   0.05Hz ≤2.2uF
   0.02Hz ≤5.5uF 28×37×22
5
33×18×34
33×18×3425+45
20A
VLF-70/1.1
 70KV/59mA
   0.1 Hz, ≤1.1µF
   0.05Hz, ≤2.2µF
   0.02Hz, ≤5.5µF 28×37×22
5
 33×18×34
35×20×3625+45
20A
VLF-80/1.1Â
 80KV/59mA
   0.1 Hz, ≤1.1µF
   0.05Hz, ≤2.2µF
   0.02Hz, ≤5.5µF28×37×22
5
33×18×34
37×24×3925+45
20A
VLF-90/1.1Â
 90KV/59mA
   0.1 Hz, ≤1.1µF
   0.05Hz, ≤2.2µF
   0.02Hz, ≤5.5µF28×37×22
5
33×20×35
37×24×3930+45
20A
Vlf High Voltage Generator 70kv
Model NO.: VLF-70
HS Code: 9030339000
The VLF testers (Generator) are suitable for