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.
1. AC Withstand voltage testing, Voltage & current curve display.
2. Tan delta (tgδ test), capacitance (μF) and IR (Ω) Test without external device (for buyer’s option).
3. Partial discharge testing without external device (for buyer’s option).
4. DC withstandi voltage test,DC leakage current measurement (for buyer’s option).
5. ”IEE 400.2” Analysis of Tan delta test result.
6. Safe Optical isolation technology.
7. Easiest to use Fully automatic microcontroller.
8. H/L voltage closed loop negative feedback control circuit, output no capacity rise effect.
9. Built-in printer.
10. Built-in protective resistors.
11. Colour Touch LCD (154*86mm)operation, True sine wave output.
12. Real-time display of actual output waveform.
13. Ergonomic, menu guided, large colour touch screen
14. Storage of test results for later retrieval and print.
15. Over voltage and current protected.
16.Auto variable frequency 0.1Hz, 0.05Hz, 0.02 Hz, 0.01 Hz.
17. 60 mins continuous working;
18. Data of current, voltage and waveform directly sampled at HV side.
19. Rugged and reliable design less prone to failure from transients.
20. Invatation Patent
21. Portable: Control unit + Booster (Tank)
22. CE mark.
23. RS232 for option.
Specification
1.Power: 220V ± 10% AC (110V can be customized), 50/60Hz, single phase;
2.Output-Voltage (Peak): 1 to rated value (KV), details see the below “table1,table 2,table 3 & table 4”;
3.Output frequency: 0.1Hz, 0.05Hz, 0.02 Hz, 0.01 Hz (auto variable frequency);
4.Load: 0.5μF (approx 6,000 ft of cable) @ 0.1 Hz
1.0μF (approx 12,000 ft of cable) @ 0.05 Hz
2.5μF (approx 30,000 ft of cable) @ 0.02 Hz
5.0μF (approx 60,000 ft of cable) @ 0.01 Hz
5. Stability of frequency: Fluctuation < 0.5%;
6. Measurement accuracy: ±3%;
7. Positive and negative voltage peak error: ≤3%;
8. Voltage waveform distortion: ≤5%;
9. Construction: 1 Control unit + 1 Booster (≤60KV set); 1 Control unit + 2 Boosters(≥60KV set).
10. Ambient conditions of use: temperature Indoor and outdoor : -10ºC ～ + 50ºC.
11. Humidity:≤85%
12. Technical indexes of VLF tgδ test (for option):
1) tgδ test voltage range: 1 to 40KV (Only one booster can be used for tan delta test if 2 boosters set)
2) Measurement voltage accuracy: 3%
3) Dielectric loss test frequency: 0.1Hz
4) Measurement range: 0.01×10-3- 655.35×10-3
5) Dielectric loss accuracy: 1x10-4
6) Dielectric loss resolution: 1x10-5
7) Capacitance measurement range: 0.001μF-10μF
8) Celectric capacity resolution: 0.001μF
9) Current measurement range: 0–59mA
10) Current resolution: 0.1mA
11) Insulation resistance: 0.01GΩ-65.53GΩ
12) Insulation resistance resolution: 10MΩ
13.Main technical indexes of VLF PD test (for option):
1) Partial discharge measurement range: 0.01pc-200pc
2) Partial discharge detection sensitivity: 0.01pc
3) Capacitance range: 0.001μF-10μF
4) Sampling bits: 12 bits
5) Sampling speed: 12M/S
6) Test voltage: 0 to rated value (KV)
14.DC leakage current measurement (for option):
1) Output rated voltage: same as rated AC voltage output
2) Voltage accuracy: 3%
3) Leakage current range: 0-2000μA
4) DC Current resolution: 1μA
5) DC current accuracy: 3%
6) It is necessary to parallel the capacitor we supplied if testing DC leakage current.
The “VLF” following series supply AC Withstand voltage testing only:
|
Model no
|
Output
Voltage/
Current
(Peak)
|
Load Capacity
|
Control Unit
|
Booster(Tank)
|
Power
|
|
Capacitance/
Freuency
|
Net Dim.
(cm)
|
Net Wt
(kg)
|
Net Dim.
(cm)
|
Net Wt
(kg)
|
|
VLF-30
|
30KV/20mA
|
0.1Hz-0.01Hz
Auto Variable
Capacity:≤10µF
|
40×31×20
|
6
|
29x15×35
|
25
|
1000W
|
|
VLF-40
|
40KV/20mA
|
0.1Hz-0.01Hz
Auto Variable
Capacity:≤10µF
|
40×31×20
|
6
|
29x15×35
|
25
|
1200W
|
|
VLF-50
|
50KV/30mA
|
0.1Hz-0.01Hz
Auto Variable
Capacity:≤10µF
|
40×31×20
|
6
|
45×19×36
|
45
|
1500W
|
|
VLF-60
|
60KV/59mA
|
0.1Hz-0.01Hz
Auto Variable
Capacity:≤5µF at 60KV;
|
40×31×20
|
6
|
45×19×36
|
45
|
2000W
|
|
VLF-70
|
70KV/59mA
|
0.1Hz-0.01Hz
Auto Variable
Capacity:≤5µF at 70KV;Capacity:≤10µF for single booster (30/40KV)
|
40×31×20
|
6
|
29x15×35
|
25
|
2500W
|
|
36x19×45
|
45
|
|
VLF-80
|
80KV/59mA
|
0.1Hz-0.01Hz
Auto Variable
Capacity:≤5µF at 80KV;
Capacity:≤10µF for single booster (30/50KV)
|
40×31×20
|
6
|
29x15×35
|
25
|
3000W
|
|
36x19×45
|
45
|
|
VLF-90
|
90KV/59mA
|
0.1Hz-0.01Hz
Auto Variable
Capacity:≤5µF at 90KV;
Capacity:≤10µF for single booster (40/50KV)
|
40×31×20
|
6
|
29x15×35
|
25
|
3500W
|
|
36x19×45
|
45
|
Accessaires
|
Sr no.
|
Description
|
Quantity
|
|
1
|
Control unit
|
1
|
unit
|
|
2
|
Booster
|
1 or 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
