| 摘要 |
The present invention relates to a mobile tester (2) for the VLF testing ("Very Low Frequency" testing) of a measurement object (3), in particular a high-voltage or medium-voltage cable, which has means for generating an AC voltage which is used as the test voltage and has an effective amplitude of greater than or equal to 1 kV and a frequency in the range of between 0.01 and 1 Hz, a connection element (9) for connecting the measurement object (3) to which the test voltage is to be applied, and means for measuring and evaluating the test voltage applied to the measurement object and the test current caused thereby. In a first operating mode, the tester (2) is set up to autonomously carry out a VLF test using the test voltage generated thereby. The tester (2) also has a communication interface (17) for emitting a synchronization signal (S) and/or for receiving an externally generated synchronization signal (S), and the tester is set up, in a second operating mode (parallel operating mode), to synchronize the generated test voltage with the test voltage generated by at least one further tester (2) of the same type on the basis of the synchronization signal (S). |
