This product is designed for AC and DC withstand voltage tests on large-capacitance test items such as cables and motors. It is not suitable for small-capacitance or resistive test items such as zinc oxide arresters.
Product features for this type of VLF cable tester:
1.The ultra-low frequency with rated voltage less than or equal to 60kV adopts a single link structure (a booster); The ultra-low frequency of more than 60kV adopts a series structure (two booster in series), which greatly reduces the overall weight and enhances the load capacity, and the two booster can be used separately to achieve a multi-purpose machine.
2.Current and voltage data are sampled directly from the high voltage side, so the data is accurate.
3. Intelligent comprehensive protection function: there is no need to set the current and voltage protection value, the instrument can calculate the overvoltage and overcurrent protection value according to the size of the test capacity and the test voltage value, and can also protect the voltage and current mutation, so it can capture the discharge situation. The protection operation time is less than 20ms.
4.150kV high voltage line output, safe and reliable.
5.Because of the closed-loop negative feedback control circuit, the output has no capacity rise effect.
6.Added DC and dielectric loss test functions, which can simultaneously measure the dielectric loss, capacitance and insulation resistance of the test product during the withstand voltage test.
We can customize output voltages of 30kV, 40kV, 50kV, 60kV, 80kV, and 90kV. You can choose to configure the tester with AC withstand voltage only, AC and DC withstand voltage capabilities, or AC and DC and dielectric loss testing capabilities.
| Rated voltage | Carring capacity | Application range |
| 30kV(peak) | Automatic frequency change:0.1Hz-0.01Hz
On-load capacity:<=10µF
| Used for voltage test of cables and motors within 10KV
|
| 40kV(peak) | Automatic frequency change:0.1Hz-0.01Hz
On-load capacity:<=10µF
| Used for voltage test of cables and motors within 10KV
|
| 50kV(peak) | Automatic change frequency: 0.1Hz-0.01Hz
Load capacity: <=6µF
| Used for voltage test of cables and motors within 15KV
|
| 60kV(peak) | Automatic change frequency: 0.1Hz-0.01Hz
Load capacity: <=5µF
| Used for voltage test of cables and motors within 25KV
|
| 80kV(peak) | Automatic change frequency: 0.1Hz-0.01Hz
Carrying capacity:
<=6µF(within 50kV),
<=4µF(above 50kV)
| Used for voltage resistance test of cables and motors within 35KV
|
Output rated voltage
| 30kV-90kV
The different specifications are shown in above Table |
Output frequency
| Automatic conversion range: 0.1Hz-0.01Hz
|
Carrying capacity
| See above Table
|
AC voltage resolution
| 0.1kV
|
Voltage accuracy
| 3%
|
AC current resolution
| 0.1mA
|
AC current accuracy
| 3% |
| Voltage positive and negative peak error | ≤ 3% |
| Voltage waveform distortion | ≤ 3% |
| Conditions of use | indoor and outdoor; Temperature: -10ºC∽+40ºC; Humidity: ≤ 85%RH |
| Input power | Frequency 50Hz, voltage 220V±5%(or frequency 60Hz, voltage 110V±5%). If the micro generator is used for power supply, the frequency conversion generator should be used, and the ordinary generator can not be used, because the ordinary generator speed is unstable, which will make the boost voltage abnormal and damage the instrument. |
