How to find out the utilization of horizontal and vertical earthing switches?
How to find out the utilization factor of horizontal and vertical earthing switches knowing the number of vertical electrodes - 3 pcs. their length is 4 m. and the distance between them (length of the connecting strip) is 4 m. What to divide and multiply. Relationship tables do not help. There are no such characteristics. Thanks in advance.
How is it not such characteristics? You have 3 electrodes of 4 meters each, you determine how far they are from each other. Once the strip is 4 meters, suppose that these electrodes will be 1.3 meters apart (at least in a row, at least with a triangle), then the ratio of distance to length is 4 / 1.3 = 3.07. We round down (up to three), we have 3 electrodes, from the first table found in Google - the utilization coefficient is 0.90-0.92.
|
The ratio of the distance between the electrodes to their length(a/lat) |
Number of electrodes |
ηat |
|
1 |
2 3 5 10 15 20 |
0,84-0,87 0,76-0,80 0,67-0,72 0,56-0,62 0,51-0,56 0,47-0,50 |
|
2 |
2 3 5 10 15 20 |
0,50-0,92 0,85-0,88 0,79-0,83 0,72-0,77 0,66-0,73 0,65-0,70 |
|
3 |
2 3 5 10 15 20 |
0,93-0,95 0,90-0,92 0,85-0,88 0,79-0,83 0,76-0,80 0,74-0,79 |
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