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MEWOI-VLF3090KV Sereis Combined type VF830(30KV),VF840(40KV),VF850(50KV),VF860(60KV),VF880(80KV)-A 0.1Hz VLF Hipot Tester,Very-low-frequency high-voltage generator,VLF Hipot Test set
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Configuration Options
| Options | Option 1(Basic) | Option 2(Multifunctional) | Option 3 | Option 4 |
| 30KV(One Booster) | VLF AC Withstand Voltage Test | VLF AC+Tan Delta(tgδ) | VLF AC+Partial Discharge Test | VLF AC+Tan Delta+PD Test |
| 40KV(One Booster) | VLF AC Withstand Voltage Test | VLF AC+Tan Delta(tgδ) | VLF AC+Partial Discharge Test | VLF AC+Tan Delta+PD Test |
| 50KV(One Booster) | VLF AC Withstand Voltage Test | VLF AC+Tan Delta(tgδ) | VLF AC+Partial Discharge Test | VLF AC+Tan Delta+PD Test |
| 60KV(Two Booster) | VLF AC Withstand Voltage Test | VLF AC+Tan Delta(tgδ) | VLF AC+Partial Discharge Test | VLF AC+Tan Delta+PD Test |
| 80KV(Two Booster) | VLF AC Withstand Voltage Test | VLF AC+Tan Delta(tgδ) | VLF AC+Partial Discharge Test | VLF AC+Tan Delta+PD Test |
INTRODUCTION
The ultra-low frequency dielectric withstand voltage test is actually an alternative to the power frequency withstand voltage test. It can replace large-capacity resonant transformers when conducting power frequency withstand voltage tests on large generators, cables, etc. The ultra-low frequency high-voltage generator combines the advanced technology of modern digital frequency conversion, adopts microcomputer control, and fully automates boosting, bucking, measurement and protection. Due to the full electronics, it is small in size and light in weight, and has a large capacitive touch screen LCD display, which is clear and intuitive, and can display output waveforms and print test reports. It is very convenient to use. It has been proved from many years of theory and practice at home and abroad that replacing the power frequency withstand voltage test with the 0.1Hz ultra-low frequency withstand voltage test can not only have the same equivalence, but also greatly reduce the size and weight of the equipment. It is about one-fifth of the power frequency, and the operation is simple. Compared with the power frequency test, it has more advantages. This is why this approach is commonly used in developed countries. After more than ten years of continuous research and development, the production technology of ultra-low frequency high-voltage generators has become more lightweight and intelligent; it has been upgraded from the previous series output maximum voltage of 80KV to single-stage direct output of 0-90KV. |
Nickname
| Nickname: Ultra-low frequency high-voltage generator: ultra-low frequency withstand voltage tester, ultra-low frequency cable withstand voltage tester, ultra-low frequency generator withstand voltage tester, ultra-low frequency motor withstand voltage tester, program-controlled ultra-low frequency high-voltage generator, ultra-low frequency AC Pressure test equipment. |
MAIN FEATURES
1,Advanced technology: digital frequency conversion technology, microcomputer control, pressure rise, pressure reduction, measurement, protection, etc,The test process is fully automated. |
| 2,Easy to operate: simple wiring, easy operation. |
| 3,Comprehensive protection: multiple protection (over-voltage protection, over- current protection at high and low voltage sides), rapid action (when acting), action time ≤20ms), the instrument is safe and reliable. |
| 4,Safety and reliability: the controller is connected with the low voltage of the high voltage generator, with photoelectric control, safe and reliable use. |
| 5,The high and low voltage closed-loop negative feedback control circuit is adopted, and the output has no capacity rise effect. |
| 6, Complete configuration: capacitive touch screen, LCD Chinese character display, automatic storage, automatic printing. |
| 7,Auto Variable Frequency：0.1Hz-0.01Hz |
| 8,Small volume and light weight: it is very convenient for outdoor operation. |
TECHNICAL SPECIFICATION
Model | Rated Voltage | Load | Fuse | Weight |
30KV /1.1 | 30kV（Peak Value） | Auto Variable Frequency：0.1Hz-0.01Hz Capacity：≦10µF |
8A | Controller: 4kg Booster: 25kg Suitable for withstand voltage test of cables and motors ≤11kV |
60kV/1.1 | 60kV（Peak Value） | Auto Variable Frequency：0.1Hz-0.01Hz Capacity：≦8µF |
10A | |
80KV/0.5 | 80kV（Peak Value） | Auto Variable Frequency：0.1Hz-0.01Hz Capacity：≦5µF |
20A | Controller: 4kg Booster 1(40KV): 25kg Booter 2(40KV): 45kg Suitable for withstand voltage test of cables and motors ≤35kV |
90KV/0.5 | 90kV | Auto Variable Frequency：0.1Hz-0.01Hz Capacity：≦5µF |
20A |
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Performance Comparison of various withstand voltage test equipment:
Compare content | Power frequency withstand voltage | Frequency withstand voltage | 0.1Hz withstand voltage | DC withstand voltage |
Equivalence | good | Good | Good | Bad |
Insulation destructive | small | small | small | big |
Operation safety | low | low | high | A little low |
Wiring | Complicated | Most Complicated | Most easy | complicated |
Volume and weight | Heavy and big | Heavy and big | Light and small size | Light and small size |
| Voltage Class | Split Type | Combined Type |
| 30KV |
Model No.: VF830F |
Model No.: VF830 |
| 40KV |
Model No.: VF840F |
Model No.: VF840 |
| 50KV |
Model No.: VF850F |
Model No.: VF850 |
| 60KV |
Model No.: VF860F |
Model No.: VF860 |
| 80KV |
Model No.: VF880F |
Model No.: VF880 |
| Voltage Class | Split Type | Combined Type |
| 30KV |
Model No.: VF830FD |
Model No.: VF830D |
| 40KV |
Model No.: VF840FD |
Model No.: VF840D |
| 50KV |
Model No.: VF850FD |
Model No.: VF850D |
| 60KV |
Model No.: VF860FD |
Model No.: VF860D |
| 80KV |
Model No.: VF880FD |
Model No.: VF880D |
