30kv to 80kv Very Low Frequency Vlf AC Hipot Tester
USD $360 - $8,388 /Unit
Min.Order:1 Unit
Huazheng Electric Manufacturing (Baoding) Co., Ltd.
GDVLF-30 VLF AC Hipot Test Set for Cable
MOQ: 1 PC ! The suplier of State Grid ! Standard: CE ISO!
High Voltage test system VLF AC pulse generator selection:
1,0.1Hz -50KV Ultra-Low Frequency High Voltage Generator
Table 1
Model | Rated Voltages | Load capacity | Fuse | Weight | Useful |
VLF-50/1.1 | 50KV (peak ) | 0.1Hz,≤1.1µF | 20A | Control :6Kg Body Boost :50kg | 15.75KVCables,Generator |
0.05Hz,≤2.2µF | |||||
0.02Hz,≤5.5µF |
2,How to choose the suitable products for test
Please make sure that the capacitance of test products is below the instrument rated capacitance. The waveform will be influence if the capacitance of test products is too small and the instrument can not normally output when it below 0.05µF. 0.1µF capacitor in parallel to auxiliary output. Below is capacitance of some instrument for your reference.
Single relatively power capacity of different Generator
Table 2
| Thermal Power | Hydropower | |||||
Generator capacitance (MW) | 200 | 300 | 600 | 85 | 125-150 | 300 | 400 |
Single relatively power capacity(µF) | 0.2-0.25 | 0.18-0.26 | 0.31-0.34 | 0.69 | 1.8-1.9 | 1.7-2.5 | 2.0-2.5 |
Power capacitance of single-core XLPE insulated cable (µF/km)
Table 3
| Capacity µF/Km | |||||||||||
Voltage (kV) | 10 | 0.15 | 0.17 | 0.18 | 0.19 | 0.21 | 0.24 | 0.26 | 0.28 | 0.32 | 0.38 | - |
35 | - | - | - | 0.11 | 0.12 | 0.13 | 0.14 | 0.15 | 0.16 | 0.17 | 0.19 | |
Cross-sectional area (cm²) | 16 | 25 | 35 | 50 | 70 | 95 | 120 | 150 | 185 | 240 | 270 |
High Voltage test system VLF AC pulse generator parameters:
1,output rated voltage , Table 1 for reference
2,output frequency :0.1Hz,0.05Hz,0.02Hz.
3,loading capability : Table 1 for reference
0.1 Hz maximum 1.1µF
0.05 Hz maximum 2.2µF
0.02 Hz maximum 5.5µF
4,accuracy :± (3% of full scale +0.5 KV)
5,voltage waveform distortion :≤5%
6,condition of use : indoor, outdoor; temperature : -10℃~+40℃;humidity :≤85%RH
7,power supply :AC50 Hz,220V ±5%
8,power fuse : Table 1 for reference
From the date of purchase within one year instrument, is a product quality problem free repair replacement, lifetime supply of maintenance and technical services. The instrument has found anomalies or malfunctions please contact us to arrange the most convenient treatment options.