transformer cooling, Electrical Engineering

Assignment Help:
An oil-filled transformer has a c.m.r. of 500 kVA which allows it to run
continuously in an ambient of 35°C with an oil temperature rise of
50°C. The transformer has a time constant of 1.5. hours and the ratio of
copper losses to iron losses at c.m.r. is 1.5:1.
After switch-on, the transformer supplies a load of 600 kVA for one
hour and the load then rises to 750 kVA. Calculate the period of time
that the transformer can supply this load without exceeding its rated
maximum temperature. Sketch the heating curves for the two loads.

Related Discussions:- transformer cooling

Damping coefficient, define the physical significance of damping coefficien...

define the physical significance of damping coefficient

Applied electronics, What is coupling? Explain the types of coupling

What is coupling? Explain the types of coupling

What is inductor, What is Inductor Inductor, also known as a choke, is ...

What is Inductor Inductor, also known as a choke, is another passive type electrical component designed to take benefit of this relationship by forming a much stronger magnetic

Explain the configuration of a step-by-step switching system, With neat dia...

With neat diagrams explain the configuration of a step-by-step switching system. Schematic diagram for such an exchange is given in Figure.  Every subscriber is connected to a

How numbering plan is achieved in modern telephony, Q. How numbering plan i...

Q. How numbering plan is achieved in modern telephony? Ans: The purpose of numbering plan is to uniquely identify every subscriber connected to a telecommunication network.

Determine the equivalent impedance, Q. A 75-kVA, 230/115-V, 60-Hz transform...

Q. A 75-kVA, 230/115-V, 60-Hz transformer was tested with these results: • Open-circuit test: 115 V, 16.3 A, 750 W • Short-circuit test: 9.5 V, 326 A, 1200 W Determine:

Explain piezoelectricity, Explain piezoelectricity. Piezoelectricity: ...

Explain piezoelectricity. Piezoelectricity: It gives us a means of converting electrical energy to mechanical energy and vice versa. While an electric field is applied to

Unijunction transistor, UniJunction Transistor: (abbreviated as UJT)...

UniJunction Transistor: (abbreviated as UJT), also called the double base diode, is a 2 layer, 3 terminal solid state switching device. The device has a unique characteristi

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd