The dc grounding method 3

Hybrid grounding: so-called hybrid grounding is within a device of the circuit board in the shortest wire connected to the chassis,or signal circuit is the base of the related equipment,in the shortest wire grounding connected to the same metal body,and then multiple devices with wire received a fixed in the same spot.Like this grounding method called hybrid grounding.Hybrid grounding in engineering is the most simple way,is in the ac power into house master switch,the zero line repeat grounding (or zero line connects to housing on the structure of the main generator stator steel bar),and then in the power of the zero line leads to a PE line should wholesalemotor.blogspot.com connect all grounding point.Second,ring grounding network for earth,is the grounding body into a closed loop around the building.

Within such ground network to make the interface of the electric field electric motors price distribution is evener,step to reduce the harm to people,and also reduce indoor when affected by lightning,and because of the large ground potential gradient to counter the risk of high pressure equipment.Three,base earthing body: use the steel bar inside the building foundation,according to the requirements of "specification" connection low rpm generator alternator of grounding body called base earthing body.Some people think that,in the basis of reinforcing bar,concrete cover the impossible and the conduction of grounding body.Is,in fact,good insulation dry concrete and concrete in contact with the water of the soil containing water,capillary absorbs moisture to keep the concrete with high water content in concrete,and thus reduce the resistivity of the concrete with the earth if one.