NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
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NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
Author: Noyafa–Cable Tester Manufacturer
Question: Shenzhen cable fault detection company tell you how to use electricity with confidence? Answer: For the use of electricity, it is estimated that many people do not know, so today this article will specifically explain how to use electricity with confidence. And one of the main reasons for using electricity with confidence is the problem: Shenzhen cable fault detection company tells you how to use electricity with confidence? Answer: For the use of electricity, it is estimated that many people do not know, so today this article will specifically explain how to use electricity with confidence. One of the main reasons for using electricity with confidence is grounding.
The first thing to understand is that grounding refers to connecting electrical equipment, overvoltage protection devices, etc. with grounding wires and grounding bodies. The grounding body is a metal conductor buried in the ground and directly in contact with the ground (including soil, river water, river water, lake water, and well water), also known as grounding electrode. The grounding wire is a metal conductor that connects the grounding part of the power equipment and the grounding body, and is generally made of iron tape, angle steel, steel bar, steel strand, etc.
The grounding body is divided into two types: natural grounding body and artificial grounding body. Natural grounding bodies generally include underground metal pipes, reinforced concrete rods, metal components, etc.; artificial grounding bodies generally include round steel, angle steel, iron pipe, iron belt, etc. buried in the ground. Common groundings can be divided into the following four categories according to their functions.
Protective grounding: connect the non-charged metal parts of electrical equipment to the ground to ensure personal safety. This grounding is called protective grounding. For example, the grounding of the casings of various electrical appliances, motors, and transformers. Working grounding: In the power system, the ground is used as a wire or a certain point of the network is grounded according to the needs of normal operation, which is called working grounding.
For example, the grounding of the neutral point of the transformer. Lightning protection grounding: In order to safely divert strong lightning current, grounding one end of the overvoltage protection device is called lightning protection grounding, also known as overvoltage protection grounding. Such as lightning rod (line), lightning arrester grounding.
Electrostatic grounding: The grounding set up to release electrostatic charge and prevent the danger of static electricity. Such as the grounding of flammable oil, natural gas pipelines and gas tanks.
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