Home > Products > Other testing equipment > VLF low Frequency high voltage tester,power cable and generator insulation test machine
VLF low Frequency high voltage tester,power cable and generator insulation test machine
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Product Description
VLF low Frequency high voltage tester,power cable and generator insulation test machine
Product Application
The VLF tester is applied in power cable and generator insulation test in power system
Product Feature
(1), Adopt single structure for ultralow frequency with lower or equal 50kV rated voltage (1 set booster);
Cascaded structure is for higher than 50kV ultralow frequency (2 sets booster). So reduce weight largely
and increase loading capability. Moreover 2 sets booster can be independently as use for low voltage grade
ultralow frequency.
(2), Current, voltage and waveform data all can be captured from high voltage side, so data is accurate.
(3), Have overvoltage protected function. If output is over specified voltage, instrument will shut down and within 20ms action.
(4), Have overcurrent protected function:designed for high-low voltage double protection,high voltage side can shut down and protect based on specified value; low voltages side can shut down and protect if over rated current,time of action all are lower than 20ms.
(5), High voltage output protected resistor is designed inside of booster, so no need to connect protected resistor.
(6), Because of adopting high and low closed-loop negative feedback control circuit,so no output capacitance raise effect.
Technical Parameter
Type |
Rated voltage |
Load capacity |
Power fuse |
Structure, weight |
VLF-30/1.1 |
30kV (peak) |
0.1Hz,≤1.1µF |
5A |
Controller:4kg Booster:25 kg |
0.05Hz,≤2.2µF |
||||
0.02Hz,≤5.5µF |
||||
VLF-40/1.1 |
30kV (peak) |
0.1Hz,≤1.1µF |
6A |
Controller:4 kg Booster:35 kg |
0.05Hz,≤2.2µF |
||||
0.02Hz,≤5.5µF |
||||
VLF-50/1.1 |
50kV (peak) |
0.1Hz,≤1.1µF |
7A |
Controller:4 kg Booster:50 kg |
0.05Hz,≤2.2µF |
||||
0.02Hz,≤5.5µF |
||||
VLF-60/1.1 |
60kV (peak) |
0.1Hz,≤1.1µF |
10A |
Controller:4 kg Primary booster(30kV):25 kg Second booster(30kV):45 kg |
0.05Hz,≤2.2µF |
||||
0.02Hz,≤5.5µF |
||||
VLF-70/0.5 |
70kV (peak) |
0.1Hz,≤0.5µF |
10A |
Controller:4 kg Primary booster(30kV):25 kg Second booster(40kV):50 kg |
0.05Hz,≤1µF |
||||
0.02Hz,≤2.5µF |
||||
VLF-80/0.5 |
80kV (peak) |
0.1Hz,≤0.5µF |
12A |
Controller:4 kg Primary booster(30kV):25 kg Second booster(50kV):50 kg |
0.05Hz,≤1µF |
||||
0.02Hz,≤2.5µF |
1,Output frequency:0.1Hz, 0.05Hz, 0.02Hz
2,Loading capacity: 0.1Hz max 1.1µF
0.05Hz max 2.2µF
0.02Hz max 5.5µF
3,Measurement accuracy:3%
4,Voltage + and - peak value deviation:≤3%
5,Voltage waveform distortion:≤5%
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11. Transformer tester (CT/PT tester) model TPVA-404
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Contact Us
- Chongqing Top Oil Purifier Co., Ltd
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