Vlf Ultra-Low Frequency High Voltage Generator for AC Voltage Withstand Test

Years of experience in the production and operation of portable oil filtration machine, DC Resistance Test Equipment, cooking oil filtration have laid the foundation for our understanding of domestic and international product standards and quality. Talents are the key to our company's development, and we insist on the pursuit of the concept of common progress of all employees in both material and spiritual aspects. Our enterprise tenet: adhere to the market-oriented, innovation for development, quality for survival, perfect after-sales service, won the praise of the majority of users. We promise our customers quality and durability by providing services that help extend the life of our products, and we gain a reputation for environmental protection. Our company has international sales experience and the ability to create good results, you can rest assured bold cooperation with us.

1. Application
Portable Very Low Frequency High Voltage Power Tester VLF Test Set is designed and manufactured by FUOOTECH specially for withstand voltage testing of electrical voltage 10kV/35kV/300MW thermal power machine, 10kV/35kV power transformers and lines, and all electrical main equipment.

FUOOTECH manufactures the most portable and easiest to use VLF hipots available. Offering the largest selection in the industry (including CE marked models), voltage ratings range from 30 kV ~ 120 kV with load ratings from 0.5 µF ~ 5.5 µF. FUOOTECH has been the world's leading source for VLF test equipment since 2002.

Very low frequency high voltage power test is essentially an alternative of power frequency withstand voltage test. VLF hipots perform voltage withstand tests and provide the voltage source for diagnostic cable testing. Customers frequently purchase tan delta and partial discharge measurement accessories along with VLF equipment to further extend their testing capabilities.

FUOOTECH provides the largest selection of VLF test instruments, the most powerful and highest voltage models which are durable, economical, and easy to use.

2. Where is VLF used?

VLF testing is used for any application requiring AC testing of high capacitance loads. The major application is for testing solid dielectric cable (per IEEE400.2), followed by testing large rotating machinery (per IEEE 433-1974), and occasionally for testing large insulators, arrestors, and the like.

Even if a utility doesn't adopt VLF for widespread cable testing, one of the best reasons to use VLF is to check installation quality and accessories, like splices. Many failures are due to damage during installation and/or defective workmanship. At the very least, every newly installed or repaired cable should be VLF tested before re-energizing.

3. Technical Parameters

Table 1:

4. More Technical Data for Various Models

Table 2:

More details on VLF testing 30/40/50/60/70/80/90kV, please contact FUOOTECH, we have professional tech team to design correctly designed products and systems.

5. Functions & 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
 

6. Stocks at office

7. Packing, Delivery, Shipping and Payment

8. Certificates

9. After-sales Service

1) We offer 24 months of warranty for all our products from the date of shipment.

2) Even if the warranty period is expired, we still provide lifelong maintenance, technical service and spare parts supply.

3) We guarantee the maintenance time no more than 3 working days and response time within 2 hour.

4) We creat independent file for each true buyer to record the product service and maintenance conditions.

5) We can offer on-site installation, commissioning and training at client's cost.

6) If you have any question, please contact us freely by E-mail, Telephone, WhatsApp, Skype, etc.

Welcome to contact us for your inquiry and order.

Our products are exported for Vlf Ultra-Low Frequency High Voltage Generator for AC Voltage Withstand Test. We accept public supervision and establish the concept of environmental protection for all employees of our company. All employees of the company pursue high-quality products with advanced technology and modern management methods, and are committed to keeping the company at the forefront of the industry.