6. Dielectric suit testers

6.1 Prescribed measurement conditions

The purpose of these devices is to check that electrical equipment has been designed to tolerate overvoltages between internal circuits and the external enclosure in contact with the user, which may be introduced by the network supplying them or generated by switching off inductive loads connected in parallel to the same network. This resistance to overvoltages is achieved, on the one hand, by sufficiently dimensioning the creepage distances and distances in the air and, on the other hand, by using solid insulators of sufficient quality.

Type tests carried out on prototypes and production batches are the best way of ensuring this, but it is also necessary to monitor production by means of unitary control tests, commonly...