VLF Hipot tester with TD & PD testing

VLF Advantage

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. Portable rugged and reliable trunk design (case material is special imported mixed resin).

20. Invatation Patent                                                    

21. CE mark.

22. RS232/USB.

23. Remote control system for option

 

Specification

1.Power: 220V ± 10% AC (110V can be customized), 50/60Hz, single phase;

2.AC output-Voltage (Peak): 1 to 50KV;  DC output: 1-50KV (DC for option);

3.Output frequency: 0.1Hz, 0.05Hz, 0.02 Hz, 0.01 Hz (auto variable frequency);

4.Load capacity: max 1.0μF@ 0.1 Hz ;  Max 10.0μF@ 0.01 Hz;      

5. Stability of frequency: Fluctuation < 0.5%;

6. AC voltage measurement accuracy: ±3%;

7. AC voltage measurement 0-20mA, resolution: 0.1KV;

8. AC current measurement accuracy: ±3%;

9. AC current measurement resolution: 0.1mA;;

10. Positive and negative voltage peak error: ≤3%;                              

11. Voltage waveform distortion: ≤3%;                                  

12. Construction: Integrated device;

13. Ambient conditions of use: temperature Indoor and outdoor : -10ºC ～ + 50ºC.          

14. Humidity:≤85%  

15. Technical indexes of VLF tgδ test (for option):

1) tgδ test voltage range: 1 to 50KV;

2) Measurement voltage accuracy: 1%

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-12μF

8) Celectric capacity resolution: 0.001μF                     

9) Current measurement range: 0–20mA                          

10) Current resolution: 0.1mA

11) Insulation resistance: 1MΩ-65535MΩ (If exceeded, the device will prompt the excess)

12) Insulation resistance resolution: 1MΩ

 

16.Main technical indexes of VLF PD test (for option):

1) Partial discharge measurement range: 1pc-5000pc

2) Partial discharge detection resolution: 1pc

3) PD measurement accuracy: 3%

4) Capacitance range: 0.001μF-10μF

5) Sampling bits: 12 bits

6) Sampling speed: 200M/S                                         

  7) Test voltage: 0 to rated value (50KV)

8) Display PD instantaneous and peak value

9) Display of discharge starting voltage and discharge extinguishing voltage

10) Discharge pulse frequency: 1KHz-2000KHz

11) Real time output of partial discharge evaluation report

 

17.DC leakage current measurement (for option):

1) DC output rated voltage: 50KV max.

2) DC voltage accuracy: 3%

3) Leakage current range: 0-2000μA or 0-20mA for customized

4) DC Current resolution: 1μA

5) DC current accuracy: 3%

 

18.Dimension & weight for VLF-50TD:

Type	Host (Integrated device)		Capacitor (0.04μF/50KV)
	Dim. (mm)	Wt (kg)	Dim. (mm)	Wt (kg)
VLF-50TD	500×310×450	45	Ø110x450(H)	4

19.Transport dimension & weight:  650*650*600mm/75kg/1 wooden case.

                                                 

      Accessories

Sr no.	Description	Quantity		Remarks
1	Host	1	unit
2	Capacitor (0.04µF)	1	unit	Used as Capacity supplement, or test object for demo, or coupling capacitor (Sampler) when PD testing.
3	Discharge rod	1	unit
4	HV Test/Connection cables	1	set
5	Earth cable	1	unit
6	Power supply cable	1	unit
7	Fuse	2	units
8	Printer paper	1	unit
9	Operating manual	1	unit
10	Aluminium alloy box/Canvas bag	1	unit	Accessoires box
11	Calibration report	1	unit