光伏送变器作为电力电子设备，主要功能是把屋顶光伏发电组件产生的直流电转换为交流电。因为其内部有成千上万的电子元器件，且大部分为热源器件，因此散热设计对逆变器寿命有极大影响。

As a power electronic device, the main function of a photovoltaic transformer is to convert the direct current generated by rooftop photovoltaic modules into alternating current. Because there are thousands of electronic components inside, most of which are heat source devices, the heat dissipation design has a great impact on the lifespan of the inverter.

光伏逆变器外壳温度过高会对人体造成伤害吗?

Will the high temperature of the photovoltaic inverter casing cause harm to the human body?

光伏送变器作为电力电子设备，主要功能是把屋顶光伏发电组件产生的直流电转换为交流电。因为其内部有成千上万的电子元器件，且大部分为热源器件，因此散热设计对逆变器寿命有极大影响。

As a power electronic device, the main function of a photovoltaic transformer is to convert the direct current generated by rooftop photovoltaic modules into alternating current. Because there are thousands of electronic components inside, most of which are heat source devices, the heat dissipation design has a great impact on the lifespan of the inverter.

光伏逆变器外壳温度过高会对人体造成伤害吗?

Will the high temperature of the photovoltaic inverter casing cause harm to the human body?

人体的体感温度在36℃左右，会有温热感;在45℃左右会有烫热感;在50℃左右长时间接触会有烫疼感;在60℃时长时间接触会形成烫伤。

The perceived temperature of the human body is around 36 ℃, and there will be a warm sensation; There will be a burning sensation at around 45 ℃; Prolonged exposure at around 50 ℃ may cause a burning sensation; Prolonged exposure at 60 ℃ can cause burns.

因为逆变器散热的需要和工作环境（户外阳光直射)的特殊性，安规标准规定逆变器外壳温度不能超过70C，夏天外部环境温度为40℃时，外壳温度一般在55℃~60℃之间，因此人触碰到送变器外壳时就会有发烫的感觉，但即使出现发热，也不会造成烫伤。

Due to the need for inverter heat dissipation and the special working environment (direct sunlight outdoors), safety standards stipulate that the temperature of the inverter housing cannot exceed 70C. In summer, when the external environment temperature is 40 ℃, the housing temperature is generally between 55 ℃ and 60 ℃. Therefore, when people touch the inverter housing, they will feel hot, but even if there is heat, it will not cause burns.

为了更好、更快地降低元器件温度，保证元器件更长的使用寿命，采用整体式外壳与散热器紧密接触的设计，使外壳成为系统欺热的重要组成部分，散热性能加强，外壳温度较高，这属于逆变器工作的正常现象。

In order to lower the temperature of components better and faster, and ensure a longer service life of components, a design is adopted that tightly contacts the integral shell and heat sink, making the shell an important component of the system for heat dissipation. The heat dissipation performance is enhanced, and the shell temperature is higher, which is a normal phenomenon of inverter operation.

由于夏季环境温度较高，光伏逆变器工作之后温度会更高，所以送变器的通风工作就非常关键了，保障光伏送变器良好的通风环境是非常重要的。

Due to the high ambient temperature in summer, the temperature of the photovoltaic inverter will be even higher after operation, so the ventilation of the transformer is crucial. Ensuring a good ventilation environment for the photovoltaic transformer is very important.