The seal box provides over pressurization protection for the absorber. 密封箱還起著對吸收塔過壓保護的作用。
And also, it has many other functions include islanding detection and avoiding, over voltage protection, over current protection and so on. 此逆變器還具有其他功能,包括孤島效應,過電壓欠電壓保護,過流保護等等。