- Onderwerp starter
- #151
Even update hier. Gisteren voor herkeuring geweest. Alles goed, behalve 1 puntje waar ze bij de RDW ook niet precies wisten wat nu de handige oplossing is. Keurmeester dacht goed mee hoe het op te lossen is. Hier is een discussie voor opgestart bij de RDW. Het puntje heb ik voor de collega's in het engels uitgetypt:
For people interested in the technical background: The regulation under discussion is article 5.1.2.2. from the european R100 guideline. This states the following:
5.1.2. Protection against indirect contact
5.1.2.1. For protection against electrical shock which could arise from indirect contact, the exposed
conductive parts, such as the conductive barrier and enclosure, shall be galvanically connected
securely to the electrical chassis by connection with electrical wire or ground cable, or by
welding, or by connection using bolts, etc. so that no dangerous potentials are produced.
L 57/58 Official Journal of the European Union 2.3.2011 EN
5.1.2.2. The resistance between all exposed conductive parts and the electrical chassis shall be lower than
0.1 ohm when there is current flow of at least 0,2 amperes.
Since we use hub motors, which are outrunner motors, the housing is connected to the axle through a bearing. A bearing has a resistance of more than 0.1 ohm while standing still (roughly 0.5 to 0.8 in our case). Therefor it is difficult to comply to this guideline.
The inspector's opinion is that either:
1. the motor is standing still and therefor does not have any voltage applied to it and is therefor safe.
2. the motor is running and therefor you cannot touch the housing.
Nu dus nog wachten op resultaat van de discussie binnen de RDW.
For people interested in the technical background: The regulation under discussion is article 5.1.2.2. from the european R100 guideline. This states the following:
5.1.2. Protection against indirect contact
5.1.2.1. For protection against electrical shock which could arise from indirect contact, the exposed
conductive parts, such as the conductive barrier and enclosure, shall be galvanically connected
securely to the electrical chassis by connection with electrical wire or ground cable, or by
welding, or by connection using bolts, etc. so that no dangerous potentials are produced.
L 57/58 Official Journal of the European Union 2.3.2011 EN
5.1.2.2. The resistance between all exposed conductive parts and the electrical chassis shall be lower than
0.1 ohm when there is current flow of at least 0,2 amperes.
Since we use hub motors, which are outrunner motors, the housing is connected to the axle through a bearing. A bearing has a resistance of more than 0.1 ohm while standing still (roughly 0.5 to 0.8 in our case). Therefor it is difficult to comply to this guideline.
The inspector's opinion is that either:
1. the motor is standing still and therefor does not have any voltage applied to it and is therefor safe.
2. the motor is running and therefor you cannot touch the housing.
Nu dus nog wachten op resultaat van de discussie binnen de RDW.