The portable cable test set
KPG 44kV VLF is used for testing of medium voltage cables in accordance to the standards IEC 60502-2, CENELEC HD 620 & 621, DIN VDE 0276/620 & 621 and IEEE400.
Test is carried out with a low strain practice with VLF (very low frequency) test voltage of preferably 0.1Hz.
VLF testing enables detection of damages of insulation within shortest test time.
The KPG 44kV VLF can test cables with extruded insulation (XLPE-, PE-, EPR-insulation) as well as cables with paper-oil insulation (PILC).
Thông số kỹ thuật
| Technical data |
KPG 44kV VLF |
| Power supply |
230 V (± 10%), 10 A, 50/60 Hz |
| Output voltage |
0...44 kVrms (62 kVpeak), 0.1 Hz VLF (0.05 Hz + 0.02 Hz optional)
± 0...62 kV DC |
| Voltage waveshapes |
VLF: similar sine-wave, symmetrical, with true R.M.S. measurement
DC: direct voltage, negative and positive polarity
|
| max. load (VLF) |
4.1 µF at 19 kVrms , 0.1 Hz (app. 16 km)*
14.6 µF at 19 kVrms , 0.02 Hz (app. 58 km)*
1.5 µF at 44 kVrms , 0.1 Hz (app. 6 km)*
6.3 µF at 44 kVrms , 0.02 Hz (app. 25 km)*
* at a cable capacitance of 0.25 µF/km
|
| Overcurrent trip (DC) |
10 mA |
| Discharge |
integrated automatic discharge device, max. 12500 J |
Voltage measuring range
|
-70...0...70 kV, accuracy 1%
|
| Current measuring ranges |
± 0...100 µA / 1 mA / 10 mA |
| Operating temperature |
-20 ... +45°C |
| Duty |
Continuous operation |
PC interface
|
USB flash drive
|
Construction
|
in two parts, Operation unit and High Voltage unit |
Weight
Operation unit
HV unit |
17 kg
49 kg |
Dimensions (W x H x D)
Operation unit
HV unit |
37 x 34 x 20 cm
40 x 44 x 24 cm |
>>> Máy thử cao áp KPG 54kV VLF