DEVICE TESTING / REPEAT TESTS / TESTS AFTER REPAIRS: SNR 462638 – SNG 482638 – EN 50678 – EN 50699:

Known Swiss Standards:

Old: SNR 462638 (based on DIN VDE 0701-0702)
Neu: New: SNG 482638 / Repeat testing and testing after repair of electrical devices – This standard includes references from EN 50678 and EN 50699

European Standards:

EN 50678 / VDE 0701:2021 – General procedure for checking the effectiveness of protective measures for electrical devices after repair
EN 50699 VDE 0702:2021 – Repeat testing for electrical devices

According to EN 50678 / EN 50699, the following electrical tests must be carried out:

Isolation resistance measurement: This test measures the resistance between the active parts of an electrical device and the protective conductor. Its purpose is to ensure that no unwanted electrical connections exist.
Protective conductor resistance measurement: This test measures the resistance of the protective conductor, which is important for the safe operation of the device. A low resistance ensures good grounding and thus effective protection against electric shocks.
Touch current measurement / Leakage current measurement: This test measures the current flowing through the human body when a person accidentally comes into contact with live parts. The measured current must not exceed a certain limit to ensure safety.
Schutzleiterstrommessung / Ableitstrommessung: Diese Prüfung misst den Strom, der durch den Schutzleiter fließt, wenn ein Fehlerstrom auftritt. Ein hoher Schutzleiterstrom kann auf einen Fehler im Gerät hinweisen und sollte vermieden werden.
Functional test: This test verifies the proper functioning of the device, including all protective devices and safety features.

It is important to note that the exact tests and their requirements may vary depending on the type of electrical device. EN 50678 / EN 50699 provides general guidelines, but they need to be adapted for specific devices and applications.