Micro-controller, Colour Touch LCD
Advanced digital frequency technology
Built-in printer
Discharge free
Portable
60mins Continous working
CE mark
Patent
5th generation
The VLF testers (Generator) are easily
to test cables, transformers, switchgear,
rotating machinery and other
electrical apparatus.
VLF Advantage
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 touch colour 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, 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. CE mark
19. Portable, 1 Controller + 2 boosters
Each booster can be used separately, there are 1*30KV + 1*50KV
Booster for 80KV set, using the 30KV booster to test ≤30KV output, using the 50KV booster to test ≤50KV output,
Using 2 boosters in series connection to test ≤80KV output.
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.
Specification
1.Power: 220V ± 10% AC, 50/60 Hz, single phase (110KV source can be customized);
2. AC Output-Voltage :80KV peak (DC output for optional);
3.Output frequency: 0.1Hz, 0.05Hz, 0.02 Hz, 0.01Hz (0.01Hz for optioanl);
4. Stability of frequency: Fluctuation < 0.5%
5. Measurement accuracy: ±3%.
6. Positive and negative voltage peak error: ≤3%.
7. Voltage waveform distortion: ≤5%
8. Construction:Control unit and 2 Boosters
9. Ambient conditions of use: temperature Indoor and outdoor : -10ºC ～ + 50ºC.
10. Humidity:≤85%
12.Test set includes: 1 Controller + 2 boosters + 1 capacitor
(Capacitor can be used as device under testing for check/demo, or used as capacitive compensation when test object’s capacity is too low).
13.Main technical datas for VLF series:
|
Model no
|
Output
Voltage/
Current
(Peak)
|
Load Capacity
|
Control Unit
|
Booster
|
Power
|
|
Capacitance/
Freuency
|
Net Dim.
(cm)
|
Net Wt
(kg)
|
Net Dim.
(cm)
|
Net Wt
(kg)
|
|
VLF-30
|
30KV/20mA
|
0.1 Hz, ≤1.1µF
0.05Hz, ≤2.2µF
0.02Hz, ≤5.5µF
0.01Hz, ≤11.0µF
|
40×24×31
|
6
|
34×16×30
|
25
|
1000W
|
|
VLF-40
|
40KV/20mA
|
0.1 Hz, ≤1.1µF
0.05Hz, ≤2.2µF
0.02Hz, ≤5.5µF
0.01Hz,≤11.0µF
|
40×24×31
|
6
|
44×18×37
|
40
|
1200W
|
|
VLF-50
|
50KV/30mA
|
0.1 Hz, ≤1.1µF
0.05Hz, ≤2.2µF
0.02Hz, ≤5.5µF
0.01Hz, ≤11.0µF
|
40×24×31
|
6
|
44×19×37
|
45
|
1500W
|
|
VLF-60
|
60KV/59mA
|
0.1Hz ≤ 0.5µF
0.05Hz ≤ 1.0µF
0.02Hz ≤ 2.5µF
0.01Hz, ≤5.0µF
|
40×24×31
|
6
|
45×20×38
34×16×30
|
45+25
|
2000W
|
|
VLF-70
|
70KV/59mA
|
0.1Hz ≤ 0.5µF
0.05Hz ≤ 1.0µF
0.02Hz ≤ 2.5µF
0.01Hz, ≤5.0µF
|
40×24×31
|
6
|
45×20×38
34×16×30
|
45+25
|
2500W
|
|
VLF-80
|
80KV/59mA
|
0.1Hz ≤ 0.5µF
0.05Hz ≤ 1.0µF
0.02Hz ≤ 2.5µF
0.01Hz, ≤5.0µF
|
40×24×31
|
6
|
45×20×38
34×16×30
|
45+25
|
3000W
|
|
VLF-90
|
90KV/59mA
|
0.1Hz ≤ 0.5µF
0.05Hz ≤ 1.0µF
0.02Hz ≤ 2.5µF
0.01Hz, ≤5.0µF
|
40×24×31
|
6
|
46×22×38
45×20×38
|
45+45
|
3500W
|
|
VLF-100
|
100KV/59mA
|
0.1Hz ≤ 0.5µF
0.05Hz ≤ 1.0µF
0.02Hz ≤ 2.5µF
0.01Hz, ≤5.0µF
|
40×24×31
|
6
|
50×25×40
50×25×40
|
48+48
|
4000W
|
* RMS value can be customized.
Accessaires
|
Sr no.
|
Description
|
Quantity
|
|
1
|
Control unit
|
1
|
unit
|
|
2
|
Booster
|
2
|
unit
|
|
3
|
Capacitor (0.04µF)
|
1
|
unit
|
|
4
|
Discharge rod
|
1
|
unit
|
|
5
|
HV Test/Connection cables
|
1
|
set
|
|
6
|
Earth cable
|
1
|
unit
|
|
7
|
Power supply cable
|
1
|
unit
|
|
8
|
Fuse
|
2
|
units
|
|
9
|
Printer paper
|
1
|
unit
|
|
10
|
Operating manual
|
1
|
unit
|
|
11
|
Factory’s Calibration report
|
1
|
unit
|
0.1Hz VLF AC/DC Hipot tester
