现在 我们来演示三相交流风机的接线方式，三相交流电机是一种比较常见的电机，有星形和三角形两种接法，以R4D310系列其中一款产品为例，黄绿线接地线PE，黑线接三相电源L1蓝线接三相电源L2，棕线接三相电源L3，星形接法需要将黄线绿线白线短接在一起。

Now let’s show you. The three-phase AC motor is a relatively common motor, with two connection methods: star and delta. Take one of the R4D310 series products as an example. The yellow and green wires are connected to ground wires PE,

the black wire is connected to the three-phase power supply L1,

the blue wire is connected to the three-phase power supply L2,

the brown wire is connected to the three-phase power supply L3,

the star connection method requires the yellow, green and white wire to be short-circuited together.

三角形接法，需要分别将黑线和黄线短接，

蓝线和绿线短接，棕线和白线短接，

注意有些风机400V电压下不能使用三角形接法以免造成风机的烧毁，具体接线和供电方式可参考规格书。

两根灰线是热保护器，top输出为常闭触点，当绕组温度高于top的设定值触点就会断开，

当绕组温度低于top设定值触点就会闭合，

可以用在风机的控制回路，以在绕组温度高的时候切断供电保护风机。

For delta connection, you need to short-circuit the black wire and the yellow wire,

the blue wire and the green wire, and the brown wire and the white wire.

Note that some fans cannot use the triangle connection method under 400V voltage to avoid burning the fan. Please refer to the specification sheet for specific wiring and power supply methods.

The two gray wires are thermal protectors. The top output is a normally closed contact. When the winding temperature is higher than the top set value, the contact will open.

When the winding temperature is lower than the top set value, the contact will close.

 It is used in the control loop of the fan to cut off the power supply to protect the fan when the winding temperature is high.