ZWVLFT-50 VLF Hipot Tester

Advanced technology
Convenient operation
8-inch industrial touch screen, manual storage, and manual printing.
Multi-frequency selection of 0.1Hz, 0.05Hz and 0.02Hz, a large test range.

Company Profile

The company specializes in the research anddevelopment, production, sales, and service of electric power systemautomation testing equipment, providing customers with one-stopservices.

Product Introduction

VLF testing is commonly used for withstand-voltage testing of electrical equipment with relatively high capacitance. The ZWVLFT-50 is a microcomputer-controlled VLF high-voltage generator designed for withstand-voltage testing of power cables, capacitors, generators, motors, and other high-capacitance electrical equipment. It supports automatic testing at 0.1 Hz, 0.05 Hz, and 0.02 Hz, with integrated measurement and protection functions.

Functional Characteristics

1. Advanced technology: By adopting digital frequency conversion technology and microcomputer control, the test procedures of boosting, voltage reduction, measurement, protection, etc. are fully automated. The instrument has the electronic calendar function, and the time can still be maintained after powering down.
2. Convenient operation: Simple wiring, and fully automatic operation.
3. Comprehensive protection: Multi-protection (over-voltage protection, over-current protection on high- and low-voltage side),rapid action (action time ≤ 20 ms), the instrument is safe and reliable.
4. Safe and reliable: The controller and the high-voltage generator are in low-voltage connection and under photoelectric control,which are safe and reliable to use.
5. By adopting high- and low-voltage closed-loop negative feedback control circuit, the output has no capacitive rise effect.
6. Complete configuration: 8-inch industrial touch screen, manual storage, and manual printing.
7.The instrument has the data communication function. It can be connected to a computer through a USB port for uploading test data to the computer.
8.The instrument has the help documentation function, through which the directions for use, wiring and notes of the instrument can be known without viewing the instruction book.
9.The instrument has the system setting function, through which the current time can be modified.
10.Large test range: Multi-frequency selection of 0.1Hz, 0.05Hz and 0.02Hz, a large test range.
11.Small size and light weight: Very conducive to outdoor operations.

Technical Parameter

ZWVLFT-50 VLF Hipot Tester Technical Data

Size	ZWVLFT-50
Output voltage ratings	See Details of Table 1
Output frequency	0.1Hz, 0.05Hz, 0.02Hz
Degree of instability for peak value of output high voltage	≤1%
Degree of instability for frequency of output voltage	≤ 3%
Distortion rate of output voltage waveform	≤ 5%
Use condition	indoor and outdoor
temperature	-10℃+40℃
Humidity	≤ 85%RH
Power supply	220V±10%, 50±5%Hz
Power supply fuse tube	See Details of Table 1

Table 1 Main Technical Parameters of VLFS Serie Ultra-low Frequency High-voltage Generator

Model	Peak Voltage	Measuring Range	Weight	Purpose
30/1.1	30kV	≤1.1μF @ 0.1Hz	Controller: 4kg Booster: 25kg	Cables, generators with voltage of 10kV and below
		≤2.2μF @ 0.05Hz
		≤5.5μF @ 0.02Hz
50/1.5	50kV	≤1.5μF @ 0.1Hz	Controller: 5kg Booster: 35kg	Cables, generators with voltage of 20kV and below
		≤3.0μF @ 0.05Hz
		≤7.5μF @ 0.02Hz
80/1.1	80kV	≤1.1μF @ 0.1Hz	Controller: 5kg Booster: 45kg	Cables, generators with voltage of 35kV and below
		≤2.2μF @ 0.05Hz
		≤5.5μF @ 0.02Hz

Product Details