Duty cycle, Mechanical Engineering

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.

Posted Date: 9/17/2012 5:21:01 AM | Location : United States







Related Discussions:- Duty cycle, Assignment Help, Ask Question on Duty cycle, Get Answer, Expert's Help, Duty cycle Discussions

Write discussion on Duty cycle
Your posts are moderated
Related Questions
Q. Design pressure of Vessels? The design pressure shall be as specified on the Vessel Data Sheet. The design pressure for a vessel in vacuum service shall be full vacuum (1

A rectangular plate has two holes of dimensions shown and is released from the position shown. The plate is hinged about a horizontal axis and can rotate in the vertical plane. An

HEAT ENGINE - Thermodynamics: HE A T ENGINE. A heat engine is a thermodynamics system that operates in a cycle in which heat can be transferred from heat source to heat si

Spot welding of different metals Though, mild steel is t he metal most commonly used, any prime metal or alloy can be successfully spot welded provided that machine with suitab



what is the meaning of 6061 and why its called as 6061?

Force - Mechanics: Sometime we push the wall, then there are no changes in position of wall, but no doubt we apply a force, as the applied force is not sufficient to move the

The cylindrical tank with hemispherical ends shown in Fig. have volatile liquid and its vapor. The liquid density is 800 kg/m3, and its vapor density is negligible. The pressure in

Example of Equilibrium of body on the rough inclined: Magnitude of minimum force ' p ' that is required to move the body up the plane. At the time when ' p ' is acted with the