Grid fluctuations caused the slurry feed pump to stop operating due to frequency conversion, resulting in the shutdown of the plant!
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I wonder if anyone has ever encountered a situation where voltage fluctuations caused critical frequency converters to stop operating, resulting in significant losses:victory:. I have some information regarding the issue of brief shutdowns of frequency converters due to voltage fluctuations; those who are interested can leave their email address and industry sector, and I’ll send it to them； Table of contents: 1. The impact of power supply fluctuations on inverter speed control and countermeasures 2. A brief analysis of handling power fluctuation incidents 3. Analysis of some devices designed to resist power fluctuations 4. Information on motors and inverters that can withstand power fluctuations 5. Several issues to be considered during the use and maintenance of inverters.
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MRR Low-Voltage Motor Restart Controller – Product Overview: In industrial production, many important low-voltage motors often come to a stop due to voltage fluctuations or brief power outages caused by lightning strikes, short circuits, or other factors; this phenomenon is commonly referred to as \"voltage fluctuations.\" Such incidents disrupt the continuous production process and cause significant losses for businesses. The MRR-C series of products was specifically developed to help industrial enterprises avoid shutdowns caused by power fluctuations. The MRR-C series of products incorporate advanced foreign technology, and feature high reliability, compact size, easy installation, and simple wiring; they can be directly installed in on-site low-voltage switchgear. The MRR-C series of products monitors the grid voltage and the operating status of motors in real time. When a motor in operation stops due to power fluctuations in the grid, if the grid voltage returns to normal within an allowable time frame, the motor will start up again according to the pre-set restart timing, thereby resuming operation of the motor that stopped as a result of those power fluctuations. If the grid voltage does not return to normal within the allowed time, the controller locks out the program and stops starting the equipment. If there are multiple motors at the site that need to be restarted in batches, setting different restart times for the MRR-C will allow for batch restarts. The MRR-C series of products can be used for motor restart under control by conventional AC contactors, in star-delta starting circuits or reduced-voltage starting circuits, for motor restart controlled by mechanical switches such as the DW series, and for motor restart controlled by frequency converters or soft starters.
Install an SVC reactive power compensation device