Contactors and relays are core executive components of the cold storage electrical control system. The integrity of their contacts directly determines the normal on-off of the electrical circuit. Contact ablation is a common hidden danger, which is likely to cause abnormal equipment operation and safety risks.

         Contact ablation is mostly caused by current overload, poor contact of contacts, frequent start-stop or arc erosion, which will increase contact resistance, cause on-off failure, further lead to electrical circuit faults, affect the normal start-stop and operation of the unit, and even cause equipment shutdown and electrical short circuit in severe cases.

         It is necessary to regularly check the state of contactor and relay contacts, timely clean the contact oxide layer, replace ablated components, standardize equipment start-stop operations, avoid current overload, eliminate hidden dangers of contact ablation, and ensure the stable operation of the cold storage electrical system.