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Electrical tests
Ground conduc-
tor resistance
- The device to be tested must be safely isolated from the AC grid. The mains lead (L,
N, PE) must not be connected. Follow the safety rules.
- The device to be tested must be safely isolated from the battery. The charger leads
must not be connected.
- No earthing connections must be present
- No additional options should be connected to the battery charging system
- The device must be isolated from the PC and other connections
1 Measuring device
2 Battery charging system
9 Measuring line
Example: Measuring the ground conductor resistance
(device variant without main switch)
(1) Ground terminal
(2) Example measuring point
- The measurement is taken between the ground terminal (1) of the device and any
touchable conductive part connected to the ground conductor (e.g. (2))
- Should the original mains cable be in the battery charging system, the measurement
must be taken between the earthing of the mains cable and every touchable conduc-
tive part connected to the ground conductor. Move the mains cable to detect any line
breakage
- The resistance must not exceed 0.3 *)
*) These requirements comply with DIN VDE 0701-0702 and ÖVE/ÖNORM E8701-1. Also
refer to the applicable requirements and standards in your country.
(2) (1)