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 54kV 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 54kV VLF |
| Power supply |
230 V (± 10%), 10 A, 50/60 Hz |
| Output voltage |
0...57 kVrms VLF 0.1 Hz (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) |
4.4 µF / 18 kVrms , 0.1 Hz (app. 12.2 km) *C' = 0,36 µF/km
2.4 µF / 36 kVrms , 0.1 Hz (app. 9.6 km) *C' = 0,25 µF/km
0.9 µF / 54 kVrms , 0.1 Hz (app. 4.7 km) *C' = 0,19 µF/km
0.55 µF / 57 kVrms , 0.1 Hz (app. 2.9 km) *C' = 0,19 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 |
>>> KPG 25kV digital gia tot
|