Three phase induction motor

Installation of VFD

Installation of VFD Careful planning of your VFD installation will help avoid many problems. Follow the instructions from the VFD manufacturer for required and optional installation requirements. Important considerations include temperature and line power quality requirements, along with electrical connections, grounding, fault protection, motor protection, and environmental parameters. Selecting the Drive In selecting a drive, …

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Operation of VFD

Operation of VFD The primary function of any electronic adjustable-speed drive is to control the speed, torque, acceleration, deceleration, and direction of rotation of a machine. Unlike constant-speed systems, the adjustable-speed drive permits the selection of an infinite number of speeds within its operating range. The use of adjustable-speed drives in pump and fan systems …

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Motor Selection Criteria

Motor Selection Criteria AC and DC motors come in many shapes and sizes. Some are standardized electric motors for general-purpose applications. Other electric motors are intended for specific tasks. In any case, electric motors should be selected to satisfy the requirements of the machines on which they are applied without exceeding rated electric motor temperature. …

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3 Phase Motor Overheating Reasons

Overheating is a major cause of insulation and bearing failure. 3 phase motor overheating reasons are as under: Line-Caused Motor Overheating Reasons There are four causes of line-caused overheating: overvoltage, low voltage, unbalanced voltage, and a high-resistance connection. Overvoltage: Overvoltage can cause a normally loaded motor to overheat. NEMA standard specifications allow motors a voltage …

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