High Voltage 30kv Vlf AC Hipot Tester for 10kv Cables

Product Description

Product Description

Ultra low frequency AC Hipot tester is actually an alternative method of power frequency withstand voltage test. We know that when the power frequency voltage withstand test is carried out on large generators, cables and other test objects, because their insulation layer presents a large capacitance, a large capacity test transformer or resonant transformer is required. Such huge equipment is not only bulky and expensive, but also inconvenient to use.
In order to solve this contradiction, the power department has adopted reducing the test frequency, thereby reducing the capacity of the test power supply.

Many years of theory and practice at home and abroad have proved that using 0.1Hz ultra-low frequency voltage withstand test instead of power frequency voltage withstand test can not only have the same equivalence, but also greatly reduce the volume and weight of the equipment. Theoretically, the capacity is about one five-hundred of power frequency, and the operation is simple, which has more advantages than power frequency test.
 

Features:
1.The ultra-low frequency with rated voltage less than or equal to 50kV adopts single connection structure (a booster); The ultra-low frequency greater than 50kV adopts a series structure (two boosters are connected in series), which greatly reduces the overall weight and enhances the carrying capacity. Moreover, the two boosters can be used as ultra-low frequency of low voltage level alone.

2.Current, voltage and waveform data are directly sampled from the high voltage side, so the data is accurate.
3.It has overvoltage protection function. When the output exceeds the set voltage limit, the instrument will stop for protection, and the action time is less than 20ms.

4.It has over current protection function: it is designed as high and low voltage dual protection, and the high-voltage side can be accurately shut down for protection according to the set value; When the current at the low-voltage side exceeds the rated current, shutdown protection will be carried out, and the action time is less than 20ms.

5.The high-voltage output protection resistor is designed in the booster body, so there is no need to connect another protection resistor outside.

6.Due to the use of high and low voltage closed-loop negative feedback control circuit, the output has no capacity rise effect.
 

Technical parameters:

1. Output voltage ratings: See Details of Table 1
2. Output frequency: 0.1Hz, 0.05Hz, 0.02Hz
3. Measurement accuracy: 3%
4. Positive and negative voltage peak errors:  ≤ 3%
5. Voltage wave form distortion: ≤ 5%
6. Use condition: indoor and outdoor; temperature: -10ºC∽+40ºC
Humidity: ≤ 85%RH
7. Power: AC50Hz, 220V ±5%
8. Power supply fuse tube: See Details of Table1   

Table 1:

Model no	Rated Voltage	Load Carrying Capacity	Power Fuse Tube	Product Structure and Weight
XHDP-30	30kV (Peak)	0.1Hz,≤1.1µF	8A	Controller:4kg Booster: 25kg
		0.05Hz,≤2.2µF
		0.02Hz,≤5.5µF
		0.05Hz,≤2.2µF
		0.02Hz,≤5.5µF
XHDP-50	50kV (Peak)	0.1Hz,≤1.1µF	10A	Controller:4kg Booster: 45kg
		0.05Hz,≤2.2µF
		0.02Hz,≤5.5µF
		0.05Hz,≤2.2µF
		0.02Hz,≤5.5µF
XHDP-80	80kV (Peak)	0.1Hz,≤1.1µF	20A	Controller: 4 kg Primary booster (30kV): 25kg Secondary booster (50kV): 45 kg
		0.05Hz,≤2.2µF
		0.02Hz,≤5.5µF
XHDP-90	90kV (Peak)	0.1Hz,≤1.1µF	30A	Controller: 4 kg Primary booster (40kV): 36 kg Secondary booster (50kV) 45 kg
		0.05Hz,≤2.2µF
		0.02Hz,≤5.5µF

 

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