In order to further improve the mechanical and electrical management level of each mine，Ensure the safe and stable operation of the power supply system，November 23-24，North Shaanxi Mining Company held the second special training course on relay protection setting，More than 30 mechanical and electrical professional technicians、Position electricians and others participated in the training。

"When the power supply system fails，The protection device closest to the fault point should operate first，Remove fault，While other non-faulty parts of the power supply system should continue to operate，The action that meets this requirement is called selective..."

In class，The teacher focuses on the difficulties of coal mine power grid protection、Current protection、Leakage protection、Four key points of power grid fluctuation protection，Combined with the actual situation of mine power supply management，The system explains the three factors that affect the safety and reliability of the power grid、Difficulties in eliminating security risks、Overcurrent protection setting value calculation、M88 Online Live CasinoConventional leakage protection setting value setting and other knowledge，Highly targeted and practical，Plays a role in answering questions。

“Encountered relay protection setting calculation before，Sometimes there are still some doubts，This training is very timely，Very comprehensive，Very thorough，Let us know it，Know why，Laid a solid foundation for us to do a good job in electromechanical work in the next step。" said Yuan Jihuan, technician of the transportation team of Hanjiawan Coal Company。

Carry out this special training，Enriches the professional knowledge reserve of trainees，Improved everyone’s enthusiasm for learning and technical skills。Everyone expressed their opinions，Will apply the knowledge learned in the classroom to practical work，Further improve the safety and stability of the power supply system，Strive to play a greater role，Promote mine safety production with practical actions。

At the time when the 100-day safety production standardization and labor competition activities are in full swing，Carry out this special training on mechanical and electrical management，will effectively promote the skill improvement of personnel in various positions，Further ensure the safe production of mines continues to improve smoothly，Sprint the fourth quarter for the company、Watch the "final battle" to create good conditions。(Gao Weihong Guo Hongxin)