Ultra-Low Frequency High Voltage Tester with Tan Delta Tangent Test

• After-sales Service: Life Time Maintenance
• Warranty: One Year
• Max Diameter of Workpiece: <500mm
• Mass Scope of Workpiece: 30kg
• Type: Power Test Equipment
• Accuracy Grade: 0.5
• Model NO.: VLF-40TD
• Display: Digital
• Control: Computer Control
• Weight: 30kg
• Power Source: AC220V
• Transport Package: Wooden Case
• Specification: CE mark
• Trademark: GOLDSOL
• Origin: China
• HS Code: 903033900
• Production Capacity: 100 Units

Product Description

VLF Advantage

1.AC Withstand voltage testing, Voltage & current curve display.

2.Tan delta (tgδ test), capacitance (μF) and IR (ohm) Test without external device.

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 99 groups 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. IP67 waterproof rugged and reliable design.
20. Invatation Patent                                                    
21. Portable: only one unit for 40KV, 2 units for 80KV (Control unit + Tank).
22. CE mark.
23. RS232/USB (for buyer's option).



Specification
1.Power: 220V ± 10% AC (110V can be customized), 50/60Hz, single phase;
2.Output-Voltage (Peak): 1 to rated value (KV);
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: only one unit for 40KV;  2 units for 80KV(1 Control unit +1 Tank).
10. Ambient conditions of use: temperature Indoor and outdoor : -10ºC ~ + 50ºC.          
11. Humidity:≤85%  

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-40TD	40KV/30mA	0.1Hz-0.01Hz Auto Variable Capacity:≤10µF	46×31×50	35	--	--	1000W
VLF-80TD	80KV/59mA	0.1Hz-0.01Hz Auto Variable Capacity:≤5µF at 80KV	46×31×50	35	36x19×45	45	3000W

       
 
12. Technical indexes of VLF tgδ test:
  1) tgδ test voltage range: 1 to 40KV;
  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






Analysis of Tan delta test results (IEE400.2)

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.

Field connection diagram
          It gives 80KV output when external connecting 40KV tank.
              
Package for transport

1) 40KV test set:

Sr no	Name of Commodity	Qty	N.W	G.W	Transport size (LxWxH)
1	40KV test set Including 1 capacitor	1 unit	35 kg	50 kg	580x400x500mm
Total:		1 set	35 kg	50 kg	0.12 m^3
Packed in 1 wooden case.

 
 2) 80KV test set:

Sr no	Name of Commodity	Qty	N.W	G.W	Transport size (LxWxH)
1	Controll part	1 unit	35 kg	50 kg	550x400x500mm
2	Tank	1 unit	45 kg	69 kg	470x430x720mm
	Capacitor	1 unit	4 kg
	Aluminum alloy box	1 unit	6 kg
Total:		1 set	90 kg	119 kg	0.26 m^3
Packed in 2 wooden cases.

Accessories

Sr no.	Description	Quantity		Remarks
1	Control part	1	unit
2	Booster  (Tank)	1	unit	No tank for 40KV
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	No this item for 40KV
12	Calibration report	1	unit