{"id":5383,"date":"2023-06-21T07:36:33","date_gmt":"2023-06-21T07:36:33","guid":{"rendered":"https:\/\/glutenfreepleasure.com\/__proxy_domain\/www.mes.com.sg\/?p=5383"},"modified":"2023-06-21T07:36:33","modified_gmt":"2023-06-21T07:36:33","slug":"the-common-issues-to-expect-when-using-ac-and-dc-motors","status":"publish","type":"post","link":"https:\/\/glutenfreepleasure.com\/__proxy_domain\/www.mes.com.sg\/2023\/06\/21\/the-common-issues-to-expect-when-using-ac-and-dc-motors\/","title":{"rendered":"The Common Issues To Expect When Using AC And DC Motors"},"content":{"rendered":"

Many issues can affect AC and DC motors, leading to equipment inefficiency or failure if their root causes are left unresolved. These problems can develop in both used and new motors regardless of manufacturer, so it is vital to know which issues you should look out for to enable early troubleshooting, conduct preventive maintenance<\/a>, or know when it is time for servicing, like an ex proof motor rewind<\/a>.<\/p>\n

Read on to know the most common faults in AC and DC motors and identify their possible causes.<\/p>\n

AC Motor Issues<\/h2>\n

1. Mechanical faults<\/strong><\/p>\n

The main mechanical AC motor faults to watch out for are incorrect bearing installation, shaft overdrive mechanical tolerance, and bearing housing ID measurements. The last one, in particular, can impede the bearing from running smoothly during its life cycle.<\/p>\n

Apart from proper installation, motor bearings and their protective shielding also need regular lubrication and maintenance, respectively. End users must know how much grease is required in the grease cavity within the bearing or the bearing retainer to avoid over-lubrication.<\/p>\n

2. Electrical faults<\/strong><\/p>\n

Old or poor insulation is the leading cause of motor electrical issues. Surge testing motor windings to check if they are at 75% of the recommended surge values of a rewound or brand-new winding is a good indicator of their insulation capacity and turn-to-turn integrity. This is especially beneficial for motors operating for quite some time already.<\/p>\n

Electrical overloading is another concern due to the insulation breaking down rapidly when the motor is running in overload conditions. In these situations, the motor will certainly fail to ground, suffer a turn-turn short, or short phase-to-phase. Thankfully overload failure and costly repairs can easily be avoided with the help of current protection.<\/p>\n

3. Excessive vibration<\/strong><\/p>\n

Motors must be checked frequently for any excess vibration as it can be a mechanically and electrically destructive force, with a higher risk of the latter if the vibration is severe. The typical causes of excessive vibration are:<\/p>\n