![]() Just like measuring power consumption, when you calculate the. * From this example value,we can determine our electric motor load in good condition.It is 100% with output power to drive the equipment.It efficiency and not to run with overload. Imagine the energy savings you could achieve by switching out all of the lightbulbs in your home. Output power as a % of rated power = 107.4% ESE (Engineering Services Examination) commonly known as ESE is conducted annually by UPSC to recruit engineers in four domains namely Civil, Mechanical, Electrical, Electronics & Telecommunications for the techno managerial posts. V red = 462 volt V blue = 461 volt V yellow = 460 volt Indian Engineering Services (IES) remains the most sought-after career for the engineering graduates in India. We can quantify the motor’s part-load by comparing the measured input power under load to the power required when the motor operates at rated capacity using this formula.įirst step for actual value of voltage and ampere,i suggest to collected measurement data from motor using the Voltmeter and Clamp on meter.Example as following :. We need to determine the full rated load in kW We determine value of power in kW (Pi) using this formula. We have 1 unit Induction Motor with 30 horsepower (hp),running with 34.9 amps for amperage load and 460 volts 3 phase and power factor value is 0.75 and motor efficiency is 85% ![]() It is combination from Amperage and Voltage value.Basic formula for Power is P (watt) =I(ampere) x V (volt).Power also measured in Horsepower (hp) unit.For common conversion from electrical Horsepower to Watt is 1hp = 746 watt.Įlectrical motor loads are calculated from power in kW and full rated load in kW.Following is the formula how to calculate Motor loads. What is meaning of Power?Of course this term is significant with our discussion topic.Power is rated of energy in electrical circuit. Whitney Professorship of Electrical and Computer Engineering, a program that supports Iowa State University’s Department of Electrical and Computer Engineering’s research, prominently in regards to nondestructive evaluation and solar energy research.On my last post,i discussed about why we need to determine motor loads and efficiency.So for this post i want to share how to get the motor load value using simple calculation electrical formula.īefore we go further,i want to explain about Power. Whitney passed away in 1986 at the age of 47.Ĭontinued legacy: Whitney’s wife, Donna, has become active with Iowa State after her husband’s death. He was a recipient of the Outstanding Young Alumnus Award from the ISU Alumni Association, as well as a recipient of the Professional Achievement Citation from the Iowa State University College of Engineering. Working alongside Jobs and Jef Raskin, Whitney helped to develop the Apple II, the world’s first accessible and highly successful personal computer.Īn untimely exit: After his Apple years, Whitney became an entrepreneur himself in 1981, launching several companies in Silicon Valley, California. Whitney served as the executive vice president for engineering. Before the HP 35, handheld calculators were only capable of addition, subtraction, multiplication, and division.įurther innovations: In 1978, Whitney joined Steve Jobs and Steve Wozniak as one of the earliest employees of Apple Computer. Named for its 35 buttons, the HP 35 was the first pocket calculator able to perform trigonometric functions. At Hewlett Packard, Whitney led a team of engineers that invented the world’s first handheld electronic scientific calculator, the HP 35. Major and graduation year: Electrical Engineering, BS ’61 MS ’62 PhD ’64Ĭalculating efforts: Alumnus Thomas Whitney joined Hewlett Packard in 1967. INVENTOR OF THE WORLD’S FIRST SCIENTIFIC HANDHELD CALCULATOR
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