There are several calculation methods for the lightning rod's protection range. The electrician's house uses these several calculation methods commonly used for the protection range of lightning rods, and hopes to help everyone.
At present, the calculation formulas for the protection scope of lightning rods in various countries in the world are different in form. In general, there are several calculation methods:
1. Polyline method: The protection scope of a single lightning rod is a line cone.
2. Curve method: The protection scope of a single lightning rod is a curved cone.
3. Straight line method: It is determined by taking a declination angle of the tip of the lightning rod as the vertex. A building with a risk of explosion uses a 45° angle, and a general building uses a 60° angle. The scope of protection is a straight line cone.
Since 1983, China has formally established its own lightning protection specifications. At present, China's building construction lightning protection standard GB50057-94 also adopts the ball method recommended by the International Electrotechnical Commissioner (IEC) as the calculation method of the lightning rod protection scope.
The calculation method of the lightning rod protection range states that: The commonly used lightning rod (here only refers to a single needle) mainly includes the fold line method and the rolling ball method. For this reason, calculations for the “fold line method†and the “rolling ball method†have been carried out. Based on preliminary analysis and discussion, it is concluded that the main features of the “fold line method†are intuitive design, simple calculation, and saving investment, but the height of the building is more than 20m; it is not applicable; the main feature of the “rolling ball method†is that it can calculate the lightning rod (with ) The scope of protection when combined with the grid, but the calculation is relatively complex and the investment cost is relatively large.
At present, the calculation formulas for the protection scope of lightning rods in various countries in the world are different in form. In general, there are several calculation methods:
1. Polyline method: The protection scope of a single lightning rod is a line cone.
2. Curve method: The protection scope of a single lightning rod is a curved cone.
3. Straight line method: It is determined by taking a declination angle of the tip of the lightning rod as the vertex. A building with a risk of explosion uses a 45° angle, and a general building uses a 60° angle. The scope of protection is a straight line cone.
Since 1983, China has formally established its own lightning protection specifications. At present, China's building construction lightning protection standard GB50057-94 also adopts the ball method recommended by the International Electrotechnical Commissioner (IEC) as the calculation method of the lightning rod protection scope.
The calculation method of the lightning rod protection range states that: The commonly used lightning rod (here only refers to a single needle) mainly includes the fold line method and the rolling ball method. For this reason, calculations for the “fold line method†and the “rolling ball method†have been carried out. Based on preliminary analysis and discussion, it is concluded that the main features of the “fold line method†are intuitive design, simple calculation, and saving investment, but the height of the building is more than 20m; it is not applicable; the main feature of the “rolling ball method†is that it can calculate the lightning rod (with ) The scope of protection when combined with the grid, but the calculation is relatively complex and the investment cost is relatively large.
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