Lighting line failures can be grouped into the following categories:
(1) Leakage. It usually manifests as damage or aging of the line insulation, and the current forms a loop through the building and the earth or forms a partial loop between the phase line and the neutral line. When the leakage is serious, the building will be charged and the power consumption will increase without any reason.
(2) Overload. It is expressed as the operating current exceeds the rated capacity of the line conductor. As a result, the fuse is blown, and the temperature of the overload portion rises sharply. If the protection device does not operate, it may cause serious electrical failure.
The cause of wire overload is usually: the wire carrying area is too small or blindly over-powered; the power supply voltage is abnormal.
(3) Short circuit. The causes of the short circuit are: the circuit design is poor or not required to be constructed; the short circuit inside the power equipment itself; the power line is in disrepair and aging.
(4) Open the road. The wire or accessory is damaged by external force and the power supply is interrupted. This kind of fault is generally more intuitive, so it is generally not difficult to eliminate.
First, the line is broken and the user light is not lit. The reasons may be as follows: First, the contact parts of the wire ends are rusted. Second, the insulation layer on the surface of the wire is connected and the core wire is disconnected. If the zero wire is broken, both the live wire and the neutral wire are charged; if the fire wire is broken, both wires are dead. The treatment method is to reconnect the broken wire or the loose joint of the joint, if the light is still not bright, first determine which wire is broken, and then use the light bulb to hang on the two wires to test from the beginning, where the light is not bright. There is a broken head in the root line;
Second, the fire line is grounded. After the ground wire is grounded, it is measured with an electric pen. The live wire is not charged, and the neutral wire is charged. First, unplug the insurance check from the switchboard, and unplug the insurance. When the neutral line is not energized, the insurance is unplugged. Then start from this phase and gradually check down the user. In turn, the user's fire line is removed, and after the fire line is removed, the two lines are restored to the original ground. If it is sunny, the electric pen is not accurate. It can be hung on the fire line and the zero line with a white double sheath line, and the other person uses the electric quantity below;
Third, short circuit. If a lighting circuit has a short circuit, it will make all users of this line unable to use electricity normally. The connected house light is not lit, the front user light is slightly red or not light at all, and the user light behind it will not light at all. For faults that are not easy to find, from the lightA high-speed slip ring is an electromechanical device that allows electrical current to pass between a stationary and a rotating assembly. It is typically used in applications where the speed requirement exceeds that which is achievable with a standard slip ring. High-speed slip rings are available in a variety of sizes and configurations to meet the needs of most applications. They are commonly used in military, aerospace, and medical applications where speed and reliability are critical.
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