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How can the motor be better protected?

更新:31-08-2020
摘要:

Today, let’s take a closer look at how to get better pr […]

Today, let’s take a closer look at how to get better protection for the motor? This question is a topic we want to understand today. For the motor, its life span is very limited, so we can say that we have knowledge in this area. It takes a lot of understanding before we can better protect him and extend its service life.

 

1. When using temperature to protect the motor, use built-in thermal devices for protection. When the temperature is too high, a signal is provided for protection through an external control loop. Or using thermal resistance, the thermoelectric corner measures the temperature of the motor and gives an overheating signal through the temperature controller to protect the motor.

2. Use a current transformer to measure whether the three-phase zero sequence of the motor's incoming line is zero, which is generally used for motors with larger power. The specific method is: select a suitable current transformer according to the power of the motor and install it on the inlet end of the motor control box.

 

There are two main ways to protect the motor. One is to use built-in thermal devices for protection, and the other is to select a suitable current transformer according to the power of the motor and install it on the inlet end of the motor control box. Both methods are feasible.

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