The device is not cultivated. According to Peng Shijun, the supervisor of the State Electronic Information Vocational and Technical College, there is a case of Liang Yongyu, a gas power station in Jingmen City, Wubei Province.
Refrigerators, washing machines, computers, TVs, stereos, and even every light are turned off, and you can take care of your own electric meter. Ms. Ma, who lives in Building 4, was suspicious for a while, and finally found out that the bedside lamp was aging and leaking.
One day in early May, Ms. Ma walked past the meter box and saw that the meter was leaving. Ms. Ma was puzzled: the electrical appliances in the house were not open. How did the meter go? It was a fault in the meter. Some people stole electricity or leaked electricity from their own lines. Ms. Ma found me. I first checked the route outside her home to exclude. The possibility of stealing electricity; then the electric meter was unloaded, and after checking that the meter was all right, and then the watch was installed, it began to slowly walk again.
The problem can only be found in Ms. Ma’s home. I can check all the sockets on the wall.
After a careful review, I finally found that the bedside lamp in Ms. Ma’s bedroom was very suspicious. Although the light is off, the plug is always plugged into the socket, and the plug is not pulled out at home. Pull it out and look at the meter. The meter doesn't move at all; plug it in again and the meter walks slowly.
After inspection, the line of the bedside lamp has been seriously aged and discharged to the ground.
Ms. Ma said that this lamp has been used for eight or nine years, and it has been good. There is no electric appliance to prevent it. (239200) Yang Min, Power Supply Bureau of Lai'an County, Anhui Province, in recent years, electric oven, electric iron, hair dryer, electric heater Wait for some electric heating appliances to enter thousands of households. Electric heating appliances are favored for their simple operation, convenient use and cleanliness. However, due to improper use in daily work and life, it often leads to fire accidents. Then, how to prevent the fire of electric heating appliances should be properly installed and used in accordance with the specifications of various electric heating appliances, and the electric heating appliances should not leave people after being energized. When leaving the person, deactivating, powering down, or discovering that the heater is abnormal, the power must be turned off immediately.
It is strictly forbidden to overload the electric heating appliance line. Since the power of the electric heating appliance is generally large, when selecting the wire, it is necessary to equip the wire of the corresponding specification according to the power of the electric heater to prevent the fire from being overloaded.
When using electric heating appliances, it is strictly prohibited to place them directly on the platen made of combustible materials (wood, plastic, etc.). Under the electric heating device, a non-combustible material such as ceramic tile or asbestos board should be placed, or a special bracket should be provided.
Use microwave oven and induction cooker* to prevent the coil from getting wet and catch fire. When baking food, it is necessary to master the time to prevent the baking time from being long and the distribution room (box) should not exceed 10m (221600). In the rural distribution transformer station area, Wang Fumin basically has a drop-type fuse installed on the rolling side, which is used as a switch for switching and cutting power, and a short-circuit protection device for internal faults of the transformer and the outgoing section.
The rated current of the general drop fuse melt is selected from 1.5 to 2.0 times the rated current of the high voltage side. Since the rated current of the high-voltage side is small, the rated current of the fuse of the transformer of 100 kV*A and below is selected as a multiple of 2.0; for a transformer with a capacity greater than 1 kV*A, a multiple of 1.5 times can be selected. However, the following requirements must be met to reliably break the maximum short-circuit current in the protected section, including the three-phase short-circuit current at the end of the outgoing section (from the low-voltage side insulation bushing of the transformer to the section of the low-side side total protection switch).
Meet the sensitivity requirements of the protected segment, namely: protection sensitivity requirements; for 1T systems, the two-phase short-circuit protection sensitivity requirements should be met.
In order to meet the above requirements, the power distribution room (box) should be as close as possible to the transformer visor "air umbrella". Most of the motors run in the open air and are often exposed to strong direct sunlight, making the motor that generates heat more hot. Try to keep a porch shade, reduce the ambient temperature, and prevent the motor from "heatstroke."
Listen often. When the motor is running normally, it should emit a uniform “beep†sound; when a heavy “click†sound is heard, it indicates that the motor is overloaded or the three-phase current is unbalanced, especially the heavy “click†sound, indicating the three-phase power supply. Phase loss operation; if you hear a continuous "beep" sound, the bearing is faulty.
Look at it often. The indicated values ​​of the ammeter and voltmeter should be normal. Look at whether the three-phase current is balanced, whether the three-phase voltage is symmetrical, and whether the foundation of the motor is firm.
I often touch it. Touch the outer casing of the motor by hand and the temperature rise is too high. If the hand is hot, the motor is overheated.
I often hear it. Use your nose to get close to the motor and smell if there is an insulating lacquer or burnt smell. If there is, it may be motor overheating and coil short circuit -12 Received name 7 Hu Huikun gender / female age / 16 hobbies / listening to music, reading, friends and other messages / hope to get to know the age phase IPIjillliPP brewing ship / 055550 wealth mother) £ township S ship Middle school junior high school
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