Since most of today's machinery is powered, they are equipped with overcurrent protection devices, and coal mining scraper conveyor are no exception. Reasonable overcurrent protection can prevent the equipment from being damaged due to overcurrent and protect the normal operation of the coal mining scraper conveyor.
The overload of the coal mining scraper conveyor is divided into continuous overload and short-term or transient overload. The former case is not allowed and cannot last long. The two situations are more complicated because some temporary short-term overload faults often occur. However, if it is not dealt with in time, it will develop into a continuous overload, or the coal mining scraper conveyor will resume normal operation immediately after self-exclusion.
In other words, short-term overload does not imply an accident, so in this case, coal mining scraper conveyor does not have to stop working. However, overcurrent protection cannot be judged and identified. Once the load current rises to the specified limit value, coal mining scraper conveyor will stop working immediately, so as to control the continuous overload of coal mining scraper conveyor. Consequences also limit the possibility of turning into good results.
In actual production, due to overcurrent protection, coal mining scraper conveyor will also cause many unnecessary downtimes, which will not eliminate the failure of the scraper chain during operation, which will greatly reduce the transportation efficiency of the equipment.
However, sometimes the overcurrent protection in the coal mining scraper conveyor cannot effectively protect the equipment, especially when the equipment fails. It can be seen that the addition of a motor overcurrent protector cannot completely protect the scraper conveyor, and has greater limitations.
