GDVLF-50 VLF AC Hipot Test Set for Cable
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|Min. Order:||1 Piece|
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- Model NO.: GDVLF-50
- Maxcapacity: 50kV
- Load Way: Electronic Load
- Display: LCD Screen
- Weight: 0-100Kg
- Power Supply: AC 220V±10%
- Peak voltage: 50kV
- Fuse: 10A
- Peak voltage instability: ≤1%
- Waveform distortion: <5%
- Trademark: HV Hipot
- Specification: DL/T 849.4-2004
- HS Code: 9030339000
- Type: VLF Withstand Voltage Testing
- Accuracy Grade: 3%
- Loading Method: Dynamic Load
- Control: Computer Control
- Power Source: AC220V
- Frequency: 50Hz ±5%
- Test frequency: 0.1Hz, 0.05Hz and 0.02 Hz (selectable)
- Max. load capacity: 0.5UF at 0.1Hz; 1UF at 0.05Hz; 2.5UF at 0.02Hz
- Frequency instability: ≤3%
- Working environment: indoor or outdoor; -10ºC-+40ºC; 85%RH
- Transport Package: Wooden Case
- Origin: China
GDVLF-50 VLF AC Hipot Test Set
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.
Following is a comparison for DC, Power Frequency, Variable Frequency, and 0.1Hz test.
|Aspects||DC||Power Frequency||Variable Frequency||0.1Hz|
|Operation Safety||relatively low||relatively low||relatively low||high|
|Wiring Difficulty||complicated||complicated||most complicated||simple|
In fact VLF test is the substitute for power frequency test. It is suitable for testing electrical equipment with large capacitance.
Small size and light weight. Big LCD screen and built-in printer.
0.1Hz, 0.05Hz and 0.02Hz can be chosen, which ensures a wide test range.
It realizes the fully automatic voltage boost, step-down, measurement and protection as well as the manual intervention in the process of automatic voltage boost.
Overvoltage protection and over-current protection. Action time is no longer than 20ms.
Data of current, voltage, wave form can be directly sampled at high voltage side, so the data is real and accurate.
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.
Closed-loop negative feedback circuit is adopted. No capacity rising during outputting.
Peak voltage: 50kV
Test frequency: 0.1Hz, 0.05Hz and 0.02 Hz (selectable)
Maximum load capacity: 0.5μF at 0.1Hz; 1μF at 0.05Hz; 2.5μF at 0.02Hz
Power supply: 220V ±10%, 50Hz ±5% (If using a portable generator, make sure the output voltage and frequency are stable. Power >3kW.)
Output voltage accuracy: peak voltage instability ≤1%; frequency instability ≤3%; waveform distortion: <5%.
Working environment: indoor or outdoor; -10ºC-+40ºC; 85%RH
Weight: Control unit - 6kg; HV unit- 40kg.
Remarks: Capacitance of test object can not be larger than the maximum value of the test instrument. If capacitance of test object is smaller than 0.05μF, the hipot should be equipped with an auxiliary device (supplied by HV HIPOT at your option).
|50kV Booster (HV Unit)||1 pc|
|LV Output Cable||1 pc|
|High Voltage Connecting Cable||1 pc|
|HV Output Cable||1 pc|
|Ground Wire||1 pc|
|Power Cord||1 pc|
|Print paper||2 rolls|
|Discharge Rod||1 pc|