DIN VDE 0701 / DIN VDE 0702 is a german industry standard to test devices for security. The test consists of 3 parts. (Isolation, Conductivity and Documentation). This test is mandatory for new built devices or after a repair.

Isolation is measured between the earth wire and both other wires (L and N). For this test, the device needs to be switched on. It is connected to a suiteable test-setup, e.g. MÜTER SP 701 G. The test shall not take more than 30 sec. It is passed, if the Resistance is larger than 2 MΩ.

Resistance Earth Pin towards all (from outside) accessible metallic parts. This is measured between the earth wire and with a tip, all metallic parts of the case, which can be accessed from outside. The test is passed, if the Resistance is smaller than 0.3 Ω. (for all testpoints)

Documentation is done with a fancy sticker, indicating the date, the name of the person who tested it and what kind of test was done. (DIN VDE 0701)