What is motor locked rotor protection?

Electric Motor’s locked rotor protection is an important safety feature designed to prevent the motor from being damaged in overload conditions. A stall condition can occur when the motor is subjected to a load that exceeds its capacity. This occurs when the motor is very heavily loaded and the motor’s starting torque is insufficient to overcome the load torque. As a result, the motor is unable to rotate, causing the current flowing through the motor to increase dramatically.

In this situation, the motor may draw too much current, which poses a great risk of overheating and may even cause the motor to burn out. This is where stall protection comes in handy. By monitoring the motor’s current and operating parameters, stall protection systems can detect when the motor is in a stalled state. Once detected, these systems can take immediate action to mitigate the risk of damage.

Stall protection can be understood as a type of overload protection. It is essential to ensure the life and reliability of the motor, especially in applications subject to varying loads. Without effective stall protection, the motor may suffer from thermal overload, resulting in expensive repairs or replacements and unplanned downtime in industrial environments.

Implementing stall protection requires the use of various methods such as current sensing, thermal monitoring, and control algorithms that can automatically shut down or reduce the power supplied to the motor when a stall condition is detected. This proactive approach not only protects the motor but also improves overall system efficiency.

Motor stall protection is an integral feature that helps maintain the integrity of the three phase induction ac motor under challenging load conditions. By preventing excessive current draw during stall, it ensures the motor operates safely and efficiently, ultimately contributing to the reliability of the entire system.

Wolong brand is always chasing for higher quality as well as for longer locked rotor time, which ia up to 10~15 seconds for low voltage explosion proof electric motor YBX3 Series. We have more series with different parameter so you are welcome to ask these technical question and inquiry.