Safety of inverter

1, must choose metal shell products: vehicle 12v inverter due to large power, heat is also large, if the internal heat can not be distributed in time, light will affect the life of the components, heavy will have the risk of fire.

Security considerations in design

1, must choose metal shell products: vehicle 12v inverter due to large power, heat is also large, if the internal heat can not be distributed in time, light will affect the life of the components, heavy will have the risk of fire. The metal shell, on the one hand, has good heat dissipation characteristics, on the other hand, will not burn. Plastic shell products, it is best not to choose. Some products on the market in order to save costs, 150W or even 175W products are using plastic shell, such products, even with the fan to help heat dissipation, it is not recommended to choose, because the fan is increased in the use of noise, affect the comfort of use, two is generally short working life, so as to reduce the reliability of the machine, in case of one day stop, The consequences can be serious.

 

2, for driving safety, we must choose split products, do not choose integrated products: there are four shortcomings of the integrated, first, because the car cigarette lighter socket is not very deep, integrated inverter weight concentrated in the back, the car driving process of turbulence is easy to shake off the inverter or cause poor plug contact. Second, integrated inverter inserted in the cigarette lighter socket, the rear exposed longer, plug in electrical appliances, exposed will be longer, will affect the right hand shift operation, which is closely related to driving safety, do pay attention to. Third, because it is directly inserted into the cigarette lighter socket, the back row of the integrated inverter can not be used, only with a plug board extension. Fourth, the integral shell is plastic, we all know that plastic is not resistant to high temperature, so the integral inverter and cigarette lighter socket contact part if through large current will produce high temperature, resulting in the integral inverter head deformation or melting, serious will cause a fire. Based on the above reasons, whether from the use of safety or from the use of convenience, can not choose the integral inverter, and should choose the metal shell split inverter

 

  1. Input overvoltage protection, output overload protection and output short-circuit protection are also essential to protect the inverter's own safety.

 

4, to choose the output waveform is sinusoidal wave or simulation sinusoidal wave products: pure square wave output product output waveform rise and fall along the edge is very steep, the positive maximum to the negative maximum almost at the same time, so that the load and the inverter itself caused severe instability. At the same time, its load capacity is poor, can not take inductive load. If the load is too large, the third harmonic component contained in the square wave current will increase the capacitive current flowing into the load, which will damage the power filter capacitance of the load.

 

5, to have over-temperature alarm and over-temperature protection function: with high-power electrical appliances, the inverter will produce a lot of heat, if the temperature is too high, one is to affect the normal service life of the inverter, the other is the risk of fire. Three is if you do not know the situation to touch, will burn the hand. Inverter with over temperature protection function, can beep alarm when the temperature rises to about 70 degrees and automatically stop working, cut off the output, so as to protect the safety of the inverter itself and the safety of the car personnel.


Tina Yuu

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