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The working principle of the temperature controller circuit
The temperature controller introduced in this example has the characteristics of convenient materials and reliable performance. It can be used for temperature control of seed germination, edible fungus cultivation, young animal breeding and egg egg formation, etc. It can also be used to control electric blankets, low-power electric Household appliances such as heaters.
2020/11/11
Design analysis and application of high voltage live display device
In order to prevent electrical misoperation, the composition, working principle, installation points and wiring principle of the high-voltage live display device are analyzed. Combined with practical engineering applications, the application of high-voltage live display devices is discussed, and the use of high-voltage live display devices with electromagnetic locks, microcomputer five-proof equipment, and the application of electrical locks are mainly discussed. Based on work experience, relevant suggestions were put forward.
2020/11/11
Dry-type transformer temperature standard
Dry-type transformers are widely used in local lighting, high-rise buildings, airports, terminal CNC machinery equipment and other places. Simply put, dry-type transformers refer to transformers whose cores and windings are not immersed in insulating oil. Cooling methods are divided into natural air cooling (AN) and forced air cooling (AF). When natural air cooling, the transformer can run continuously for a long time under the rated capacity. When forced air cooling, the output capacity of the transformer can be increased by 50%. It is suitable for intermittent overload operation or emergency accident overload operation; due to the large increase in load loss and impedance voltage during overload, it is in a non-economic operation state, so it should not be kept in continuous overload operation for a long time.
2020/11/11
Technical requirements for post insulator type high voltage live display device
What are the technical requirements for post insulator type high voltage live display device? 1. The sensor of the pillar insulator type high-voltage live display device: outdoor should be subjected to cold and hot tests, indoors should be subjected to high and low temperature tests. During the test, no cracks should appear, and the upper and lower flanges should not be loosened. After the test, the bending strength test should be carried out. The bending strength can be selected from 4000N, 8000N, 8500N, 16000N, 30000N. 2. The sensor of the outdoor pillar insulator type high-voltage live display device should be subjected to a partial discharge test after the cold and heat test and the mechanical bending strength test. After the high- and low-temperature test and mechanical bending strength test, the sensor of the indoor pillar insulator-type high-voltage live display device should also be subjected to partial discharge and power frequency withstand voltage tests, and the partial discharge amount is not more than 10pC. 3. The sensor of the pillar insulator-type high-voltage live display device shall be subjected to a power frequency withstand voltage test before and after the hot and cold test, and the results shall meet the requirements. 4. The display circuit of the pillar insulator-type high-voltage live display device must have reliable protection measures, and there should be no risk of electric shock during maintenance and replacement of display components.
2020/11/11
Address electrical issues proactively.
Provide safe and reliable anti misoperation products for the power grid.
