40kv Vlf Hipot Tester
Ⅰ: Description of the VLF hippt tester
40KV Vlf AC Hipot Tester Very Low Frequency Cable Testing Instrument Vlf High Voltage Generator Vlf Hipot Test
Vlf hipot test set is particularly suitable for the withstand voltage test of electrical equipment (e.g.: power cables, power capacitors, large- and medium-sized generators and Motors, etc.) with large insulation equivalent capacitance.
Ⅱ: Specification of the Very Low Frequency Cable Testing Instrument :
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Output frequency
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0.1Hz, 0.05Hz, 0.02Hz
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Load capacity
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0.1Hz maximum 1.1µF
0.05Hz max 2.2µF 0.02Hz maximum 5.5µF |
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Measurement accuracy
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3%
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Voltage positive and negative peak error
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≤3%
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Voltage waveform distortion
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≤5%
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Conditions of use
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indoors and outdoors;
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Operating temperature
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-10℃∽+40℃
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Relative humidity
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≤85％RH
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Power supply
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frequency 50Hz, voltage 220V±5%.
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Ⅲ: More detasheet about the VLF:
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Model
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Rated Voltages
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Load capacity
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Fuse
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Weight
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Useful
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VLF30KV
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30kV
(peak ) |
0.1Hz,≤1.1µF
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10A
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Control :6kg
Body Boost :30kg |
10KV Cables,Generator
|
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0.05Hz,≤2.2µF
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|||||
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0.02Hz,≤5.5µF
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VLF50KV
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50kV
(peak ) |
0.1Hz,≤1.1µF
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20A
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Control :6kg
Body Boost :50kg |
15.75KV Cables,Generator
|
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0.05Hz,≤2.2µF
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|||||
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0.02Hz,≤5.5µF
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|||||
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VLF60KV
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60kV
(peak ) |
0.1Hz,≤0.5µF
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25A
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Control :6kg
Body Boost I:30kg Body Boost II:50kg |
18KV and below the cable,Generator
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0.05Hz,≤1.1µF
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|||||
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0.02Hz,≤2.5µF
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VLF80KV
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80kV
(peak ) |
0.1Hz,≤0.5µF
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25A
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Control :6kg
Body Boost I:30kg |
35KV and below the cable,Generator
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0.05Hz,≤1.1µF
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|||||
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0.02Hz,≤2.5µF
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Ⅳ: Detailed pictures of the AC Vlf cable tester:
Ⅴ: Features of the VLF TEST:
1. Data of current and voltage are obtained directly through the sampling of high-pressure side and it is true and accurate.
2. Over-voltage protection: the instrument will shut down to protection within 20 ms when the output voltage is exceeding limiting values of setting.
3. Over-current protection: design for dual protection of high and low voltage, downtime protection can be accurately set in high-pressure side. Shut down to protection times is within 20 ms when the current of low-voltage sides exceeds reacted current.
4. High-voltage output protection resistor design in the body boost and it is no need to additional outside resistor.
5. Closed-loop negative feedback control circuit of high and low voltage.
