TESTING DEVICE FOR TESTING THE SEALING TIGHTNESS OF A WELD NODE, TESTING SET HAVING A TESTING DEVICE OF THIS TYPE, AND METHOD FOR TESTING THE SEALING TIGHTNESS OF A WELD NODE BY MEANS OF A TESTING DEVICE

The invention relates to a testing device (1), a testing set and a method for testing the sealing tightness of a weld node. The testing device (1) comprises a first test chamber wall element (5) having a first test chamber portion (10), and a second test chamber wall element (6) having a second test chamber portion (14), which correspond to each other in order to form a test chamber (15). By means of an adjustment apparatus (7), the testing device (1) can be adjusted between an insertion position in which the test chamber (15) is open for the insertion or removal of the weld node (2), and a testing position in which the test chamber wall elements (5, 6) are loaded toward each other, as a result of which the test chamber (15) is closed. A pressure testing unit can be fluidically connected to a testing pressure connection point (19) which leads at one end into one of the test chamber portions (10, 14). By means of a cable feed-through (21) corresponding to the cables (3) of the cable bundle (4), the cables (3) can be fixed in the testing position. In the testing position, the test chamber (15) and an environment are fluidically sealed off from each other by means of the cable feed-through (21) when the weld node (2) is disposed in the test chamber (15) and the cables (3) are led out of the test chamber (15) through the cable feed-through (21).