Through analyzing,calculating and checking pinch rolls'pinching force,the pinch roll motors' maximum load torque and overload torque,and the mandrel motors' overload torque,results indicate that the key parameters chosen for coilers in No.

The following paper introduces the factors should be noticed by electrical engineers during using dry-type transformers,and illustrates the temperature control system,protection method and overload capacity of dry-type transformers,in order to offer a reference for the people who use dry-type transformers.

Based on the study of transformation equipment standards both at home and abroad,the long-term continuous overload capacity,the short-term overload capacity,and the emergency overload capa.

On treatment of station structure s stress overloading by rigid spread foundation;

<Abstrcat>Based on theory of induction motor synchronization,study relation with load rate,rotor excitation current,active and inactive power in allowing rotor-wound heat and overload ability via theory analysis and experiments.

Based on theory of induction motor synchronization, studies relation with load rate,rotor excitation current ,active and inactive power in allowing rotor-wound heat and overload ability via theory analysis and experiments.

From the texture,rated,overload ability,construction of transistor core,module composition and radiation,drive and separation,combined with dissection for IGBT,this paper analyzes the reliability of high power IGBT refer to puncture and explosion of high power IGBT in converter and chopping wave speed-regulation in practice.