30KV Very Low Frequency (VLF) Testing Equipment
I. Introduction:
The VLF testing equipment is suitable for testing cables, transformers, switchgear, Rotating machinery, and other Electrical apparatus
II. Functions
1. Fully automatic microcontroller makes the vlf testing equipment easy to operature.
2. Built-in printer is designed with this equipment
3. True sine wave output
4. Real-time display of actual output waveform is available.
5. Ergonomic, menu guided, large backlit LCD
6. Storage of test results for later retrieval and print.
7. Over voltage and current protected
8. Variable frequency 0.1Hz, 0.05Hz, 0.02 Hz
9. Data of current, voltage and waveform directly sampled at HV side.
10. AC testing does not degrade good cable insulation
11. Harmful space charges are not injected into the cable insulation
12. No traveling waves are generated during testing
13. Rugged and reliable design less prone to failure from transients
III.Safety Feature
- Short circuit protected.
- Status display of all important safety functions and messages.
- Safe, easy to use operation with emergency off and key switch lock-out.
- Fully integrated discharge circuit to safely ground the DUT after testing.
- Zero start interlock.
- Zero voltage switching.
IV. Specifications:
1. Input: 220 ± 10% Volts AC, 50/60 Hz, single phase.
2. Output-Voltage. 30KV
3. Output frequency: 0.1Hz, 0.05Hz, 0.02Hz.
4. Stability of frequency: Fluctuation < 0.5%
5. Measurement accuracy: ± 3%.
6. Positive and negative voltage peak errors: ≤ 3%.
7. Voltage waveform distortion: ≤ 5%
8. Construction: In two units: Controller and Booster.
9. Ambient conditions of use: Temperature Indoor and outdoor: -10ºC to + 50ºC.
10. Humidity: ≤ 85%
| Model |
Rated Voltage/current |
Load Carrying
Capacity
|
Power fuse |
Product Structure and Weight |
| 30 |
30kV/20mA
(Peak)
|
0.1Hz,≤0.5µF~1.1µF |
5A |
Controller:4kg
Booster: 25kg
|
| 0.05Hz,≤0.5µF~2.2µF |
| 0.02Hz,≤0.5µF~5.5µF |
| 50 |
50kV/30mA
(Peak)
|
0.1Hz,≤0.5µF~1.1µF |
7A |
Controller:4kg
Booster: 50kg
|
| 0.05Hz,≤0.5µF~2.2µF |
| 0.02Hz,≤0.5µF~5.5µF |
| 60 |
60kV/30mA
(Peak)
|
0.1Hz,≤0.5µF |
9A |
Controller:4kg
Booster Grade 1(30kV):25kg
Booster Grade 2(30kV):25kg
|
| 0.05Hz,≤0.5µF~1µF |
| 0.02Hz,≤0.5µF~2.5µF |
| 80 |
80kV/30mA
(Peak)
|
0.1Hz,≤0.5µF |
12A |
Controller:4kg
Booster Grade 1(30kV):25kg
Booster Grade 2(50kV):50kg
|
| 0.05Hz,≤0.5µF~1µF |
| 0.02Hz,≤0.5µF~2.5µF |
Picture of 30KV Very Low Frequency (VLF) Cable Testing Equipment
