Introduction
Let’s start with a brief explanation of what an AC induction motor is. An AC Induction Motor (also called an ACIM) is used in HVAC and refrigeration applications, as well as many industrial applications such as pumps and blowers. The main difference between an ACIM and other motors like DC motors is that the former uses electromagnetic induction to generate mechanical power while the latter uses direct current or alternating current.
Motor is tripping within 10 minutes
Your motor is tripping within 10 minutes. This can be caused by several things, but the most common cause is a faulty thermostat. A faulty thermostat will allow the pool water to get too hot and trip your fuse box or breaker. To fix this problem you need to replace your current thermostat with a new one from [replacement part store].
Problem
Motor is tripping within 10 minutes. What is the problem?
- Motor overload tripping problem: If your pool pump motor suddenly trips its breaker, it could be that the current and voltage being delivered to the motor are too high for it to handle. This can happen if there's not enough air circulation around your pool pump, or when heat builds up inside of a poorly insulated enclosure where you have installed your pool pump.
- Electric motor tripping breaker: If an electric motor has been running at full capacity for too long without any rest time, it will overheat and trip its breaker in order to protect itself from damage caused by overheating (like burning out coils). In other words, your electric motor is telling you that it needs a break!
Solution
The way to check for a problem is to look at the motor nameplate data. The way to do this is by looking at the motor nameplate data.
The way to check for a problem is to look at the motor nameplate data. The way to do this is by looking at the motor nameplate data.
Causes of Thermal Overload Tripping in AC Induction Motors
- Excessive overload. The motor may be overloaded if it is being used at too low a supply voltage, or if the installation is subject to vibration and/or inadequate bearing support resulting in excessive vibration. This can result in overheating of the windings and eventual thermal overload tripping (see Figure 2).
- Insufficient ventilation. If there is insufficient ventilation around an AC induction motor, its temperature can rise due to poor air circulation around the windings (see Figure 3). The higher temperature will cause increased losses and reduce efficiency of the induction motor resulting in thermal overload tripping during normal operation conditions.* Contamination inside an AC Induction Motor – Dirt particles on internal parts such as bearings, shafts etc., may cause heating which could lead to thermal overload tripping
Thermal overload is caused by a high motor winding temperature due to an excessive overload or the motor being used at too low a supply voltage
Thermal overload is caused by a high motor winding temperature due to an excessive overload or the motor being used at too low a supply voltage.
Some causes of thermal overload are:
- The load on your motor is too heavy for it to handle - this can be caused by using a faulty or damaged part, or installing the wrong type of part into your device.
- The supply voltage is lower than what's recommended for your specified device - if this happens, then it will result in overheating of your device and may lead to melting/burning off components inside which will make them unusable (and could cause further damage if there aren't any safety measures).
Conclusion
If your motor is tripping within 10 minutes, it may be due to thermal overload. You should check the following:
Are there any loose connections in the motor?
Is there enough air flow?
