Reasons for damage to coal truck inverter
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What is the reason for the coal loading truck's inverter to burn out? How much does an inverter cost?
The one in my factory burned. It seems to be a short circuit caused by coal powder.
The power distribution room of the coal loading truck in our factory is equipped with an air conditioner. Because the air conditioner temperature is set too low, condensed water droplets on the inverter cause a short circuit.
Reply 3# huaiyouzhiqi Our air conditioner has poor cooling effect, so it often stops using it due to the temperature.
Our inverter is from AB Company of the United States. It is probably due to the hot weather and expiration date. Recently, a lot of inverters on coal trucks and coke-blocking trucks have broken, and the repair parts have broken again after use. It is said that Japanese inverters are of good quality.
There are many domestic brands of inverters now, and they are much cheaper than before.
High ambient temperature, large dust, aging circuits, instantaneous current overload, and grounding damage will all cause the inverter to burn out. :lol
The main reason is vibration and dust. The solution can be to install a micro-positive pressure ventilation system in the electrical room. The specific method is to directly enter the filtered air into the electrical room space, so that coal dust cannot enter, and it also plays a cooling role.
1. The frequency converters of the large trucks in our factory all use Siemens. Especially in the summer, they always burn out, especially the coke blocking and quenching trucks. The most common reason is that the frequency conversion is frequently protected and started due to high temperatures. Now it is better. Each truck is equipped with a dual-compressor industrial air conditioner. The temperature is very moderate, which is good. 2. The power distribution room of the truck should be sealed, and doors and windows should not be opened and closed frequently to prevent excessive pulverized coal from entering the power distribution room. Therefore, changing the working environment of frequency conversion is the most important. 3. The cart track must be well maintained to avoid frequent vibrations when the cart is running, which may cause the activity of the frequency conversion line or aging and sparking to burn the frequency converter.
1. The frequency converters of the large trucks in our factory all use Siemens. Especially in the summer, they always burn out, especially the coke blocking and quenching trucks. The most common reason is that the frequency conversion is frequently protected and started due to high temperatures. Now it is better. Each truck is equipped with a dual-compressor industrial air conditioner. The temperature is very moderate, which is good. 2. The power distribution room of the truck should be sealed, and doors and windows should not be opened and closed frequently to prevent excessive pulverized coal from entering the power distribution room. Therefore, changing the working environment of frequency conversion is the most important. 3. The cart track must be well maintained to avoid frequent vibrations when the cart is running, which may cause the activity of the frequency conversion line or aging and sparking to burn the frequency converter.