WYE Start DELTA Run Motor Testing Using Motor Circuit Analysis
Frequently, when a process has a high inertial load, a six lead motor will be used as it can be connected in a WYE configuration while starting to limit current, and then switched to a DELTA configuration automatically by the motor controller once it has come up [...]
What is dissipation factor?
What is dissipation factor? Dissipation Factor is an electrical test helps defi ne the overall condition of an insulating material. A di-electric material is a material which is a poor conductor of electricity but an efficient supporter of an electrostatic field. When an electrical insulating material is subjected to [...]
Electric Motor Condition Monitoring: What It Is and Its Benefits
Electric motor condition monitoring is a process of monitoring the health and performance of an electric motor. It helps to detect any potential issues before they become serious, thus avoiding costly repairs or replacements. This process can be done manually or using automated techniques such as vibration [...]
Electric Motor Predictive Maintenance: What It Is and Why Its Used
The term ‘predictive maintenance’, also known as ‘PdM’, has gained a lot of traction lately in almost every industry. But regarding electric motors specifically, what exactly is electric motor predictive maintenance? What is Electric Motor Predictive Maintenance? Electric motor predictive maintenance is the scheduled, proactive testing of motors (including [...]
Polarization Index Testing on Electric Motors Now Surpassed by Modern Methods
Regarding electric motor testing, polarization index (PI) is a measure of how much the insulation system resistance improves (or degrades) over time. While the PI Test has been considered the primary test when evaluating the condition of a motor’s insulation, its process has become outdated compared with newer [...]
DC Motor Test Advantages Using Motor Circuit Analysis
Electrical testing of Direct Current (DC) electric motors is a challenge within industry, manufacturing, and repair centers alike. The key issue has to do with the ability to compare one coil to the next, should exact information not be provided. In this article, the issue of simple [...]
How To Test a Synchronous Motor with Modern Technology
In order to further understand the application of motor circuit testing and analysis on synchronous electric motors (synchronous machines), it is important to have a brief overview of the operation of a synchronous motor, the most common faults, common test methods, how the ALL-TEST IV PRO™ (Now [...]
Motor Current Signature Analysis (MCSA) Applications
Motor Diagnostic technologies have become even more prevalent through the 1990’s and into the new century. The technologies include both Motor Circuit Analysis (MCA) and Motor Current Signature Analysis (MCSA) applied to both energized and de-energized electric motor systems. The applications appear to be almost endless. The systems [...]
Why Testing an Electric Motor with a Multimeter Is Not Enough
When an electric motor fails to start, runs intermittently, runs hot, or continually trips its overcurrent device, there my be a variety of causes, however many technicians and repairmen tend to conduct electric motor testing with multimeters or megohmmeters alone. Sometimes the motor’s issue is the power supply, [...]