Duty cycle, Mechanical Engineering

Assignment Help:

Duty cycle

The concept of duty cycle is to be clearly understood before operating any machine. Unlike the arc welding power sources, the resistance welding power sources are designated for 1 minute integrating period. Suppose a machine is rated for 50 % duty cycle, it means that after operating the machine for ½ min. at full load, the machine has to be cooled for the next ½ min. The duty cycle at loads different to the full load can be calculated from the formula.

Duty cycle at Y kVA = (rated kVA / Y kVA) x rated KVA

This formula is applicable straight in the case of under loads but while overloading, we should not overlook the constraint imposed by the maximum capacities of the circuit elements e.g. diodes, contacts, etc., though the machine is going to be overloaded to that extent only for a very brief period allowed by this formula. In effect, this formula takes care of the heating of the winding only.


Related Discussions:- Duty cycle

Cyclic service for vessels, Q. Cyclic Service for vessels? The required...

Q. Cyclic Service for vessels? The required service for all vessels shall include consideration of cyclic service. Batch operation vessels, for example, quite frequently fall i

Governor, what is the formula of sensitivity of governor?

what is the formula of sensitivity of governor?

Combined gas turbine/Rankine cycle, b. Assuming a 20 MW simple cycle gas tu...

b. Assuming a 20 MW simple cycle gas turbine with a firing temperature of 1600K develop an analysis of a combined cycle. Assume that Tmax in the Rankine cycle is 560 C, Pmax = 60

Estimate the viscosity of this diluted , A diluted polymer solution with a ...

A diluted polymer solution with a density of 1130 kg/m3 was extruded through a capillary tube of 3.5 mm internal diameter and 1 m long. The following results were obtained at 25°C.

What is the maximum load the spring may carry, What is the maximum load the...

What is the maximum load the spring may carry: Any close coiled helical spring has mean diameter of 80 mm, has spring constant of 100 kN/m. It contains 10 coils. The maximum s

Designing the cast iron housing for a heavy duty machines, Provide the vari...

Provide the various considerations to be taken in designing the cast iron housing for a heavy duty machines?

Mechanism, how many links and joint does the automatic tool changer (ATC) m...

how many links and joint does the automatic tool changer (ATC) mechanism has?

Law of belting, if motion of the belt is reversed, how the law of the belti...

if motion of the belt is reversed, how the law of the belting shall be violated??

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