Application of Yilichuang Static Motor and Winding Analyzer Test Technology in Fault Diagnosis of Motor, Transformer and Coil

Release time:

2023-01-16 09:18

Yi Li Chuang Static Motor and Winding Analyzer

Application of Test Technology in Fault Diagnosis of Motor, Transformer and Coil

Diao Mengjun

(Beijing Jierun Xinte Automation Control Technology Co., Ltd., Beijing 100300)

AbstractThe core concept of static motor and winding analyzer test technology is discussed. Focuses on static motor and winding analyzer test core method, and for a variety of motor, transformer, coil fault diagnosis and troubleshooting.

Keywordssurge; partial discharge test technology; evaluation of inter-turn short circuit

1 Introduction

With the development of economic construction and the improvement of electrification, motor equipment has been widely used in various fields of industrial production. Timely and accurate detection of potential and existing faults of motor equipment is an important measure to ensure the safe operation of production. Motor equipment is the basic component of the power supply and consumption system. It is gradually deteriorated by various factors such as electricity, heat, machinery, and the surrounding environment during operation, which eventually leads to failure; even if it stops working, it will be extremely short, It will also cause great losses. There are also various types of faults: both slow-changing faults and mutation faults, electrical faults and mechanical faults; both linear system faults and nonlinear system faults, the relationship is complex, which brings difficulties to the effective and rapid diagnosis of motor equipment faults.

Many motor maintenance and reliability programs focus on online testing methods. In other words, when the motor is running, its temperature, vibration, current and other conditions are continuously monitored.

Real-time data and alerts can be generated. For many large pump motors, this is key information, but it is not the only source. Offline testing provides valuable data that can be incorporated into a user's maintenance and reliability plans.

Offline testing is also known as static motor testing. Offline testing can find insulation weaknesses by testing higher than the operating voltage. It provides earlier warning than problems and insulation problems measured under online operating voltage. When the test voltage exceeds the peak operating voltage of the motor, it is called overvoltage test, which is the key to early detection of insulation faults. The overvoltage test includes a surge test, a partial discharge (PD) measurement, and a direct current (DC) high voltage (hipot) test.

The American Electric Power Research Association (EPRI) research on motor failures shows that 53% of motor failures are related to mechanical parts and 47% are caused by electrical failures (excluding the defects of new motors and repaired motors).

Mechanical faults have always been detected by traditional vibration analysis methods and infrared detection methods, but electrical faults are detected by milliohm test, insulation test, high voltage test, surge comparison test and partial discharge test method. Many instruments are used and the test work is complicated.

For a long time, many equipment maintenance departments, technicians and engineers relied on insulation resistance and DC resistance testing methods to detect motor faults, and seldom implemented the electrical fault prediction maintenance procedure (PdM). Until 1986, Yilichuang Company was established and developed an ITIG series static motor and winding analyzer testing technology. This technology not only helps your customers solve motor specific problems, but also helps customers solve inverter and VFD drive problems. This instrument is used to diagnose problems, quality assurance, motor reliability procedures, and various maintenance schedules.

icon_pdf Yi Li Chuang Test Technical Literature-Jierun Xinte Diao Meng Jun. pdf