WXVLF VLF Tester Hipot Withstand Low Frequency VLF Tester
Introduction:
It is designed and manufactured for electrical voltage 10kV/35kV/300MW thermal power machine, 10kV/35kV power transformers and lines etc. all electrical main equipment withstand voltage test. Very low frequency withstand voltage test is essentially an alternative of power frequency withstand voltage test. We know that when do power frequency withstand voltage test of large generators, cables etc., because of their insulating layer with large capacity, need large-capacity test transformer or resonant transformer. These devices, not only bulky, high cost, and very inconvenient. To solve this problem, power sector uses the 0.1Hz ultra-low frequency HV generator test device, reduce the test frequency to reduce the capacity of the test power, thus greatly simplifying field testing difficulty. From home and abroad for many years theories and practices have proved that with 0.1Hz ultra-low frequency withstand voltage test replace power frequency withstand voltage test, not only have the same equivalence, and the volume of the device is greatly reduced, greatly reduced weight, theoretical capacity is about one five-hundredth of power frequency.
Features:
1. Data of current, voltage, wave form can be directly sampled at high voltage side, so the data is real and accurate.
2. 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 15ms.
3. Overcorrect 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 15ms.
4. 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.
5. As a result of high and low voltage closed-loop negative feedback control circuit, the output without capacitive rise effect.
6. High-voltage control part adopts innovative light control HV switching unit, control is accurate, safe and reliable;
7. With color man-machine interface touch control plus controls modular software operating system, precise and intuitive
8. Multi-purpose, can simultaneously measure tested objects capacitance, insulation resistance, leakage current, and AC withstand voltage test
Table 1:
| Model | Rated Voltage | Load Capacity | Fuse | Reference Weight |
| WXVLF-30 (30KV) | 30kV/20mA (Peak) | 0.1Hz,≤1.1µF | 5A | Controller: 4kg Booster:25kg |
| 0.05Hz,≤2.2µF | ||||
| 0.02Hz,≤5.5µF | ||||
| WXVLF-50 (50KV) | 50kV/30mA (Peak) | 0.1Hz,≤1.1µF | 15A | Controller:4kg Booster: 50kg |
| 0.05Hz,≤2.2µF | ||||
| 0.02Hz,≤5.5µF | ||||
| WXVLF-80 (80KV) | 80kV/30mA (Peak) | 0.1Hz,≤0.5µF | 20A | Controller:4kg Booster 1(30kV):25kg Booster 2(50kV):50kg |
Table 2:
| Output rated voltage | See table 1 | |
| Output frequency | 0.1Hz,0.05Hz,0.02Hz | |
| Load capacity | See table 1 | 0.1Hz max 1.1 μf |
| 0.05 Hz max 2.2 μf | ||
| 0.02 Hz max 5.5 μf | ||
| Measurement accuracy | 2.5 % | |
| Positive and negative voltage peak errors | ≤2.5% | |
| Voltage wave form distortion | ≤3% | |
| Insulation resistance measurement error | ≤2.5% | |
| Leakage current measurement error | ≤2.5% | |
| Power | AC 50 Hz,220V ±5% | |
| Power Fuse | See table 1 | |
Accessories:
Wuhan WG Hipot Electric Tester Co.,Ltd. is the professional factory of high voltage testing equipment with over 15 years industry experience.
ISO Certified factory, qualified R&D and after-sales Engineer team, 3000 square meters workshop, our high voltage testers cover full range: High voltage hipot tester, Circuit breaker Switchgear Tester, Transformer tester, Relay Protection Tester, CT/PT Tester, MOA/Insulator Tester, SF6/Insulation Oil Test Equipment, Resistance Tester, etc.
Since 2003, with the support from our investors Wuhan High Voltage Institution and Xi'an High Voltage Institution, WG Hipot established and pioneered in high voltage testing field in domestic market as the designated supplier for State Grid and mainstream power companies.
Meantime, WG Hipot has developed overseas markets across 5 continents worldwide. We gained good feedback from our customers with our high performance, good quality, customized specification and easy-to-operate high voltage testers, which can be widely used in railway, oil and chemical industry, electricity grid, university, big factory etc.
1, Technical datas and operation manual sent for evaluation.
2, Tranining how to install and use the machine.
3, Engineers available to service machinery on site.
1, Q: Are you manufacturer or trading company?
A: We are manufacturer of more than 15 years in power testing products.
2, Q: How can the customer to pay?
A: LC, TT, Western Union all accetable.
3, Q: Could CoulWhat's your terms of delivery?
A: EXW, FOB, CFR, CIF All Acceptable.
4, Q: Could you please tell me the Warranty Period of your product?
A: Our warranty period is one year free and lifelong maintenance. If the product is damaged (if not man-made damage), in the first year,we will send free parts for replacement. Over warranty, maintenance is paid service.
5. Q: What kind of Certificate can you provide?
A: We can provide the CE mark, ISO 9001 quality certificate, third party calibration certificate(CNAS) and factory test report.
6. Q:Do you have Technical Backup to all customers from different countries?
A: To be sure,our technical support is always available and quick response.
We are manufacturer with much on-site testing experience, thus we know how to deal with your problems. Moreover, our engineers can go to your country to support if need.