txias system tsim ntawm inverter
The efficiency of theinverter is generally 97 98 percent , which means that about 2 3 percent of the electric energy is transformed into heat energy, which is much greater than the heat generated by general switches, AC contactors and other electrical appliances. General distribution cabinets are designed for common switches, AC contactors and other electrical appliances. When this kind of cabinet is used for inverter, the internal components shall be arranged to ensure the rationality of ventilation and heat dissipation.
The failure rate of inverter increases exponentially with the increase of temperature, and the service life decreases exponentially with the increase of temperature. When the ambient temperature increases by 10 degrees, the average service life of theinverter is halved. When the inverter works, the current flowing through is very large, and the heat generated by the inverter is also very large. The influence caused by its heating cannot be ignored.
In the thermal design of inverter, it is based on vertical installation, and the heat dissipation will become worse when installed horizontally. The inverternruab nrog cov kiv cua txias, tab sis cov kiv cua txias tseem yuav tsum tau nruab rau ntawm qhov hluav taws xob cua ntawm lub txee tswj, thiab cov cua nkag yuav tsum tau nruab nrog cov ntxaij lim dej kom tsis txhob muaj plua plav nkag mus rau hauv lub txee tswj. Nyob rau tib lub sijhawm, xyuam xim rau cov ntsiab lus tsim hauv qab no:
1. Lub txee hluav taws xob tswj yuav tsum muaj lub tshuab hluav taws xob yuam kev. Cov kev taw qhia ntawm cov cua ntws ntawm qhov cua nkag yuav tsum tsis muaj kev cuam tshuam thiab ua raws li lub hauv paus ntsiab lus ntawm kev tswj cov kua dej. Lub kiv cua nruab rau ntawm lub txee hluav taws xob tswj yuav tsum yog ntau tshaj 30 50 feem pua loj tshaj qhov cua ntawm tag nrho cov kiv cua ntawm lub inverter nws tus kheej.
2. Generally, the air path of the electric control cabinet shall have an air inlet with low wind resistance. In the case of dirty environment, the air inlet shall have a filter screen with small wind resistance and prevent blockage.
3. It is necessary to install the air deflector and wind deflector in the electric control cabinet. The function of the wind deflector is to block the direct air and avoid the return of hot air, so as to improve the air flow direction in the cabinet and improve the cooling effect.
4. The finverter shall be installed at a certain distance from the surrounding electrical appliances and box wall, especially to leave up and down space to make the air duct smooth and make the air flow freely. According to different power, at least 120 300mm space shall be reserved, and the left and right front space shall be at least 50mm.
