Now we are in an electrical age. There are all kinds of electrical equipment between high-rise buildings to ensure the Power Supply and operation of our lives. I don’t know if everyone knows that the box-type substation is the “big iron box†you will see when you enter the venue next to the street. This is the box-type substation, which supports the heartache of electricity in our lives. This is a large-scale power equipment. , every time you pass it, you can hear the sound of "zizizi", so does this kind of power equipment have a lot of radiation? How far do we need to be to be considered a safe distance?
According to the "Safety Regulations" data, the safety distance of each voltage level is: 500kv, 5 meters; 220kv, 3 meters; 110kv, 1.5 meters; 35kv, 1 meter; 10kv, 0.7 meters. As long as you keep this distance, first of all you will not be electrocuted. Secondly, with regard to electromagnetic wave radiation, power transmission and distribution are all low-frequency 50HZ, and low-frequency electromagnetic waves are also released, but it is high-frequency electromagnetic waves that really cause harm to the human body. Like the water ripples caused by stones, electromagnetic waves will gradually weaken with the propagation distance. The outdoor box-type substation itself emits low-frequency electromagnetic waves, which are easy to weaken with distance, and naturally cause less damage. So as long as you don't get close to the outdoor box-type substation and do not open the door of the box-type substation without authorization, it will not cause any harm to your health.
To pass the environmental protection administrative license, the power supply facilities established in residential areas must meet these standards: the power frequency electric field intensity does not exceed 4kV/m; the magnetic induction intensity does not exceed 0.1 milliTesla; in terms of radio interference, the 110KV project does not If it exceeds 53 decibels, the 500KV project should not exceed 55 decibels; the noise impact should not exceed 55 decibels during the day and 45 decibels at night. As long as these indicators meet the standards, there are no strict requirements for the distance between related equipment and buildings in terms of environmental protection.
However, according to the environmental protection department, my country currently has certain requirements for the distance between box-type substations and buildings. For example, for general 10KV-35KV substations, the front is required to be more than 12 meters away from residential buildings and the side is more than 8 meters; the construction of substations above 35KV requires that the front is more than 15 meters away from residential buildings and the side is more than 12 meters; box-type substations are more than 5 meters away from residential buildings. .
Therefore, the location of the box-type substation should be set in a safe and hidden place. In addition to the convenience of entering and exiting the line as far as possible into the load center, the impact on the surrounding environment should also be considered. The distance from the sidewalk should not be less than 1M, and the clear distance from the main building should not be less than 3 meters.
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