Medium frequency furnace is widely used in the field of metal melting, compared with other casting equipment, medium frequency furnace with high thermal efficiency, short melting time, less damage to metal elements, a wide range of melting materials, small environmental pollution and other advantages, medium frequency furnace has series and parallel two categories, then everyone knows what the difference between series medium frequency furnace and parallel medium frequency furnace?
中频炉广泛用于金属熔炼领域，和其他铸造装置相比，中频炉具有加热效益高、熔炼时间短、金属元素损伤少、熔炼材质范围广、环境污染小等优点，中频炉有串联和并联两类，那么大家都清楚串联中频炉和并联中频炉有什么区别吗？
Let's take a look at it with Xiaobian.
下面和小编一起了解一下吧。
First, what is the difference between series IF furnace and parallel IF furnace
一、串联中频炉和并联中频炉有什么区别
1. Different voltage and current
1、电压电流不同
(1) The input voltage of the series intermediate frequency furnace is a constant value, and the output voltage is a rectangular wave;
（1）串联中频炉输入电压为恒定值，输出电压为矩形波；
The output current approximates a sine wave, and the commutation is carried out after the current on the thyristor has passed zero, so that the current is always ahead of the voltage φ Angle.
输出电流近似正弦波，换流是在晶闸管上电流通过零以后进行，为此电流总是超前电压φ角。