Wuhan Goldsol Co. Ltd| Manufacturer
Wuhan Goldsol Co. Ltd

China Manufacturer with main products: Very Low Frequency High Voltage Generator (VLF tester) which can be used to measure power cables, huge electric generator, huge transformer,...

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Very Low Frequency High Voltage Generator

Supply Ability: 30 Set/Sets per Month
Shipping: 7-10 days
Payment Terms: T/T(Bank Transfer)
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Packaging Details: Aluminum alloy box inside and plywood case outside

Specifications

This is the best equipment of dielectric strength of cable,electrical apparatus.

The VLF testers (Generator) are suitable for
testing cables, transformers, switchgear,
rotating machinery, and other
electrical apparatus. 

Product Advantage 
 
1. VLF means ‘Very Low Frequency’ and 0.1Hz to 0.02Hz is considered to be very low frequency.
 
2. VLF HV Generator is suitable for testing cables, transformers, switchgear,rotating machinery,and other electrical apparatus. 
 
3. The product combines modern advanced digital variable frequency technology and micro computer control together, therefore, it can realize the full automatic voltage boost, stepdown, measurement and protection as well as the manual intervention in the process of automatic voltage boost. The full electronic design ensures the small size and light weight. The big LCD screen ensures the clear and visual display, and can display the output wave form. The printer outputs test reports. In addition, the product has features as follows:     
   
★ Data of current, voltage, wave form can be directly sampled at high voltage side, so the data is real and accurate.   
 
★ Overvoltage protection: If the output exceeds the set limit of voltage, the instrument will shut-down to protect itself, the actuation time is less than 20ms. 
 
★ Overcurrent protection: it is high-low voltage dual protection in the design, the accurate shut-down protection can be made according to the set value at high voltage side; If the current on low voltage side exceeds the rated current, the instrument will take shut-down protection, the actuation time are both less than 20ms. 
 
★ A high voltage output protective resistor is provided in the voltage boost body in the design and this eliminates the need of additional protective resistor connected outside.
 
★ True sine wave output.
 
★ Storage of test results for later retrieval and print.
 
★ AC testing does not degrade good cable insulation.
 
★ Harmful space charges are not injected into the cable insulation.
 
★ No traveling waves are generated during testing.
 
★ Rugged and reliable design less prone to failure from transients.
 
 
Technical parameters
 
 
1. Input: 220 ± 10% Volts AC, 50 Hz, single phase.
2. Output-Voltage: 80KV
3. Output frequency: 0.1Hz, 0.05Hz, 0.02Hz.
4. Stability of frequency: Fluctuation < 0.5%
5. Measurement accuracy: ±3%.
6. Positive and negative voltage peak errors: ≤3%.
7. Voltage waveform distortion: ≤5%
8. Construction: In two units: Controller and Booster..
9. Ambient conditions of use: temperature Indoor and outdoor : -10ºC  to + 50ºC.
10. Humidity:≤85%  
                      
 
Type
Output
Voltage/Current
Load Capacity
Control Unit
Booster
Fuse Tube
 
Frequency/Capacitance
Dim.
(cm)
Wt
(kg)
Dim.
(cm)
 Wt
(kg)
VLF-30/1.1
 30KV/20mA
0.1Hz ≤ 1.1uF
0.05Hz ≤ 2.2uF
0.02Hz ≤ 5.5uF
28×37×22
4
33×18×34
25
5A
VLF-40/1.1
 40KV/30mA
0.1Hz ≤ 1.1uF
0.05Hz ≤ 2.2uF
0.02Hz ≤ 5.5uF
28×37×22
4
35×20×36
35
6A
VLF-50/1.1
 50KV/40mA
0.1Hz ≤ 1.1uF
0.05Hz ≤ 2.2uF
0.02Hz ≤ 5.5uF
 28×37×22
4
37×24×39
45
7A
VLF-60/1.1
 60KV/50mA
0.1Hz ≤ 1.1uF
0.05Hz ≤ 2.2uF
0.02Hz ≤ 5.5uF
 28×37×22
4
33×18×34
33×18×34
25+25
10A
VLF-70/0.5
 70KV/55mA
   0.1 Hz, ≤0.5µF
   0.05Hz, ≤1.0µF
0.02Hz, ≤2.5µF
 28×37×22
4
 
33×18×34
35×20×36
25+35
10A
VLF-80/0.5 
 80KV/60mA
   0.1 Hz, ≤0.5µF
   0.05Hz, ≤1.0µF
0.02Hz, ≤2.5µF
28×37×22
4
33×18×34
37×24×39
25+45
12A
 



 

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