Category:power

Question:
during construction of transformer room, I would like to know when to be embedded in the foundation of how to do grounding grid, as well as how the construction of such potential, and There is ground lightning can be grounded transformer room, reinforced from their foundations on the leads to a shared, as well as the neutral point of transformer and transformer grounding is not the basis for the next channel connectivity?
emergency, etc., thank you! :
In explaining what:
I found the current situation is the transformer room in the basement, but previously did not do grounding (grounding wire is not diverted to the horizon up) how it works now?
the best point in detail.

Answer:
transformer room during construction stages, when the foundation is the basis of embedded steel bars connected together to do grounding grid network, if the grounding resistance is mainly the additional ground on the pole, has been to meet the required date (normative requirements; high-rise building of the grounding resistance of 1 ohm below, multi-storey buildings in the transformer grounding resistance of 4 ohms or less) there are other potential is the use of all the main column reinforcement within the structure of the bottom and the grounding grid linked up the introduction of such potential needs to be done in a place (or layer) level of all layers Ligament have to do with the electrical connection. there are no special requirements of the general case, the lightning protection and grounding is transforming rooms ground inside the reinforcement from their foundations on the leads to a shared, as well as grounding transformer neutral point and the transformer must be connected under the base channel and directly grounded.

you found the current situation is the transformer room in the basement, the former is impossible not to do grounding grid, and if it is not diverted to the horizon grounding line up, it can now be the basis for the next channel from the transformer connected to do take place, also available from the reserved ground lightning detection of point then leads to the lower location, the worst situation is in the corner to find two of the pillars in the main column bars as a grounding point.

Answer:
you can in the transformer room and the foot of a wall along the bottom at ground Luo bolt hole with the expansion of the fixed installation of flat iron grounding strip, (general specifications, mostly 5 cm wide and 5 mm thick galvanized flat iron), and then diverted to the ground after the next area to do according to the provisions of piles driven into the ground and the ground and the strip welding, transformer indoor transformer grounding reliably received should be put on this earth do.

Chinese:变压器的接地做法

类别: 电力

问题:
在进行变电房施工时，我想知道在地基预埋的时候要怎么做接地网，还有等电位是怎么施工的，还有防雷接地是不是可以和变电房里的接地都从地基上的钢筋上引出来共用的，还有变压器的中性点的接地是不是和变压器下的基础槽钢连通？
急等回复， 谢谢！ ：
在说明一下：
我现在碰到的情况是变压器室在地下室里，可是以前没有做接地网（接地线没有引到地平上来）那现在要怎么施工？
{zh0}详细点。

回答:
在进行变电房施工时，在地基预埋的时候是将基础的钢筋连接在一起做网接地网，如果接地电阻达不到要求,就再增加接地极,一直到达到要求为止(规范要求是;高层建筑的接地电阻为1欧姆以下,多层建筑中变压器的接地电阻4欧姆以下)还有等电位就是利用各个主柱内的结构钢筋下端与接地网相连,向上引进,在需要做等电位的地方(或 层)将所有的水平层的板筋都与其做电气上的连接.一般没有特殊要求的情况下,防雷接地是可以和变电房里的接地都从地基上的钢筋上引出来共用的，还有变压器的中性点的接地是必须和变压器下的基础槽钢连通并直接接地的.

您现在碰到的情况是变压器室在地下室里，以前不可能没有做接地网的,如果是接地线没有引到地平上来,那现在可以从变压器下的基础槽钢连通做接地点,也可以从预留的防雷接地检测点的下端引出接地点,最不好的情况是在转角的柱子内找出两根主柱筋作为接地点.

回答:
您可以在变压器室的墙脚和沿地的底边处打孔用膨胀罗栓固定安装扁铁接地钢带，（一般规格大都是5厘米宽5毫米厚的镀锌扁铁），然后把接地带引到地面后按规定做接地桩打入地下并和钢带焊接，变压器室内的变压器接地可靠地接到这条接地带上就应该可以了。