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Using the patented 0.1 Hz Cosine Square Wave Voltage, weak spots in PE, XLPE and also oil impregnated paper insulated cables are quickly brought to a controlled breakdown without causing additional damage or aging to the remaining cable insulation.
In accordance with most regulations, cables and joints must be tested after installation or repair. For this test the breakdown threshold of the cable is tested. The Seba KMT VLF Test System 54 kV can be used to test cables with operating voltage levels up to 30 kV. The high test capacity of 5 µF permits the simultaneous testing of all three phases.
DC testing of cables and connected switchgear can be carried out by switching over to DC Mode.
Performance Features:  | The 0,1 Hz cosine square wave form voltage ensures that weak spots in the cable are brought to breakdown.
| | The voltage polarity transition is just like that of a 50Hz sine wave. Therefore the cable is tested as if by a normal 50 Hz test.
| | The advantages of the VLF method with 0.1 Hz Cosine Square Wave Voltage have been proved by extensive scientific research as well as practical field tests.
| | The method is recommended in the harmonisation document HD 620 S1.
| | The maximum test capacity of 5 µF permits long three phase cable runs to be tested.
| | VLF is the most economical method of testing PE and XLPE cables and, moreover, enables paper and EPR insulated cables to be tested at a considerably reduced voltage in comparison with DC testing.
| | This VLF Test System 54 kV can be used both as a fully integrated part of a test vehicle rig and as a single free standing unit. Existing test vehicles can be retro-fitted. |
Ordering Information: | VLF Test System 54 kV Article No. 301 7560
| | For integration in test vehicles: Compact System Article No. 900 1068
| | Vario System 54 kV Article No. 900 2252
| | Regio System Article No. 608 7304
| | System R 30 Article No. 247 3488
| | System Classic
| | Hitec 2000 |
Delivery Information: | Main Unit (HV Section)
| | Operating Unit with Control Cable
| | HV and LV Cable Drums
| | Connection equipment
| | Operation manual |
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Current exibitions