VLF Advantage
1. Withstand voltage testing.
2. Dielectric loss (tgδ test), capacitance (μF) and insulation resistance (Ω) Test (for buyer’s option).
3. Partial discharge testing.
4. Safe Optical isolation technology.
5. Easiest to use Fully automatic microcontroller.
6. H/L voltage closed loop negative feedback control circuit, output no capacity rise effect.
7. Built-in printer.
8. Built-in protective resistors.
9. Colour Touch LCD operation, True sine wave output.
10. Real-time display of actual output waveform.
11. Ergonomic, menu guided, large colour touch screen
12. Storage of test results for later retrieval and print.
13. Over voltage and current protected.
14. Variable frequency 0.1Hz, 0.05Hz, 0.02 Hz, 0.01 Hz (auto variable frequency).
15. 60 mins continuous working;
16. Data of current, voltage and waveform directly sampled at HV side.
17. Dielectric loss (tgδ test), capacitance and insulation resistance (for option).
18. AC testing does not degrade good cable insulation
19. Harmful space charges are not injected into the cable insulation
20. No traveling waves are generated during testing
21. Rugged and reliable design less prone to failure from transients
22. Invatation Patent
23. Portable: Control unit + Booster
24. CE mark.
Specification
1.Power: 220V ± 10% AC (110V can be customized), 50/60Hz, single phase;
2.Output-Voltage (Peak): 30KV-100KV, details see the below table
3.Output frequency: 0.1Hz, 0.05Hz, 0.02 Hz, 0.01 Hz (auto variable frequency);
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: 1 Control unit + 1 Booster (≤50KV set); 1 Control unit + 2 Boosters(≥60KV set).
9. Ambient conditions of use: temperature Indoor and outdoor : -10ºC ～ + 50ºC.
10. Humidity:≤85%
11. Technical indexes of VLF dielectric loss (tgδ test):
1) Test voltage range: 30KVkv-80kv
2) Dielectric loss test frequency: 0.1Hz
3) Measurement range: 0.01×10-3-655.36×10-3
4) Dielectric loss resolution: ≤ 1x10-5
5) Capacitance measurement range: 0.01μF-10μF
6) Celectric capacity resolution: 0.01μF
7) Current measurement range: 0–59mA
8) Insulation resistance: 0-25122MΩ (25.122GΩ)
9) Insulation resistance resolution: 1MΩ
12.Main technical indexes of VLF PD test
1) Partial discharge measurement range: 1pc-1 μc
2) Partial discharge detection sensitivity: 1pc
3) Capacitance range: 0.01 μ F-10 μF
4) Sampling bits: 12 bits
5) Sampling speed: 12m/S
Table: The series supply AC/DC withstand voltage testing + PD(pc) + Capacity(μF):
|
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-30P
|
30KV/20mA
|
0.1Hz-0.01Hz
Capacity:≤10µFAuto Variable
|
40×24×31
|
6
|
34×16×30
|
25
|
1000W
|
|
VLF-40P
|
40KV/20mA
|
0.1Hz-0.01Hz
Capacity:≤10µFAuto Variable
|
40×24×31
|
6
|
44×18×37
|
40
|
1200W
|
|
VLF-50P
|
50KV/30mA
|
0.1Hz-0.01Hz
Capacity:≤10µFAuto Variable
|
40×24×31
|
6
|
44×19×37
|
45
|
1500W
|
|
VLF-60P
|
60KV/59mA
|
0.1Hz-0.01Hz
Capacity:≤5µFAuto Variable
|
40×24×31
|
6
|
45×20×38
34×16×30
|
45+25
|
2000W
|
|
VLF-70P
|
70KV/59mA
|
0.1Hz-0.01Hz
Capacity:≤5µF
Auto Variable
|
40×24×31
|
6
|
45×20×38
34×16×30
|
45+25
|
2500W
|
|
VLF-80P
|
80KV/59mA
|
0.1Hz-0.01Hz
Capacity:≤5µF
Auto Variable
|
40×24×31
|
6
|
45×20×38
34×16×30
|
45+25
|
3000W
|
|
VLF-90P
|
90KV/59mA
|
0.1Hz-0.01Hz
Capacity:≤5µF
Auto Variable
|
40×24×31
|
6
|
46×22×38
45×20×38
|
45+45
|
3500W
|
|
VLF-100P
|
100KV/59mA
|
0.1Hz-0.01Hz
Capacity:≤5µF
Auto Variable
|
40×24×31
|
6
|
50×25×40
45×20×38
|
45+55
|
4000W
|
Accessaires
|
Sr no.
|
Description
|
Quantity
|
Remarks
|
|
1
|
Control unit
|
1
|
unit
|
|
|
2
|
Booster I
|
1
|
unit
|
1 Booster if ≤50KV set;
2 boosters for ≥60KV set.
|
|
Booster II
|
1
|
unit
|
|
3
|
Capacitor (0.04µF)
|
1
|
unit
|
Used as Capacity supplement, or test object for demo
|
|
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
|
Aluminium alloy box
|
1
|
unit
|
1 aluminium alloy box ≤50KV set;
2 aluminium alloy boxes ≥60KV set.
|
|
1
|
unit
|
0.1Hz VLF AC/DC Hipot tester
