{ "item_title" : "Maintaining and Troubleshooting Variable Frequency Drives", "item_author" : [" Stan Turkel "], "item_description" : "The definitive field-and-classroom guide to modern variable frequency drives-fully revised and rebuilt for the technicians, engineers, and students who install, commission, and maintain VFDs in the real world.Veteran electrical engineer Stan Turkel takes readers from first principles to advanced practice in deliberate layers: foundations first (loads, AC motors, and how a drive actually works), then sizing, installation, commissioning, maintenance, and finally advanced applications like vector control. This second edition is current with the technologies defining drives today-SiC MOSFETs, Active Front End drives, multi-level inverters, inverter-duty motors, IEEE 519-2022 harmonics, industrial networks, and Safe Torque Off.Every chapter opens with the key troubleshooting points a working tech needs at a glance, then develops the theory behind them. Real-world case histories from hospitals, wastewater plants, marine vessels, and factory floors turn principles into memorable lessons. A book meant to be opened, marked up, and trusted.", "item_img_path" : "https://covers2.booksamillion.com/covers/bam/9/79/819/817/9798198173217_b.jpg", "price_data" : { "retail_price" : "49.97", "online_price" : "49.97", "our_price" : "49.97", "club_price" : "49.97", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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