0.1Hz Cable High Voltage Generator Test Equipment ,vlf AC Hipot tester 30KV 80KV

0.1Hz 0.05Hz 0.02 Hz Cable High Voltage Test Equipment 30KV 40KV 50KV 80KV VLF

VLF Test Series Product introduction:

Withstand voltage test is an essential preventive test for electrical equipment. It is divided into two parts: AC and DC withstand voltage test. AC test can be further divided into power frequency, variable frequency and 0.1Hz very low frequency test, among which the last one is highly recommended by IEC, due to its remarkable advantages.

This device is especially suitable for electrical equipment whose insulation equivalent capacitance is large such as power cable, power capacitor, large and medium sized generators and motors , for withstand voltage test

Attention: If use Portable Generator, need generator to have stable voltage output and frequency ( Usually > 3kW, Frequency 50Hz,220V±5%). Otherwise some auxiliary measurements needed in parallel.

Product features: 

1. Power supply requirement: AC50Hz, 220V, stability of frequency: fluctuation less than 0.5%

2. When using it, the capacitance of the sample should not exceed the rated capacity of the instrument. The overlow capacitance of the sample will affect the output wave form. If the capacitance is less than 0.05µF, the instrument cannot output normally.

3. When using it, it is prohibited to boost voltage without load, or to connect with resistive load.

The product combines modern advanced digital variable frequency technology and micro computer control together, therefore, it can realize the full automatic voltage boost, stepdown, measurement and protection as well as the manual intervention in the process of automatic voltage boost. The full electronic design ensures the small size and light weight. The big LCD screen ensures the clear and visual display, and can display the output wave form. The printer outputs test reports. In addition, the product has features as follows:

• Data of current, voltage, wave form can be directly sampled at high voltage side, so the data is real and accurate.
• 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 20ms.
• Overcurrent 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 20ms.
• 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.

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Technique Parameters:

Measuring range: 3%

Voltage positive-negative maximum peak value error: ≤3%

Voltage waveform distortion :≤5%

Power supply: 220V±5% 50Hz

Working condition : temperature : -10 ℃~+40 ℃ ;humidity :≤85%RH

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