1. Operation – The process of moving a moving contact from one position to another, typically used in the context of electrical switches or circuit breakers. 2. Split (Gate) Operation – The action of moving a switch from the engaged (closed) position to the open (split) position, usually to isolate a circuit or component. 3. Close (Gate) Operation – The process of moving a switch from the open (sub) position back to the closed (co-location) position, allowing current to flow through the circuit. 4. “Score†Operation – A type of operation performed immediately after closing the switch, without any intentional delay, often used in testing or specific control sequences. 5. Operation Cycle – A continuous sequence of operations that starts at one position, moves to another, and returns to the original position. If there are multiple positions involved, all intermediate positions must be covered. 6. Sequence of Operations – A defined series of actions carried out in a specific order, with set time intervals between each step, commonly used in automation and control systems. 7. Automatic Reclosing (Gate) Operation – A sequence where the switch automatically re-closes after a predetermined time following an interruption, often used in power distribution systems to restore service quickly. 8. Close (On) – A combined operation used to energize a loop or circuit by closing the switch, enabling the flow of electrical current. 9. Break (Break) – A sub-operation performed when the circuit is live, used to disconnect or interrupt the current flow safely. 10. Automatic Reclosing – The automatic reclosing (gate) operation that occurs while the system is energized, typically triggered after a fault has been cleared. 11. Opening and Closing – A general term referring to both the breaking and making of an electrical connection, essential for controlling circuits. 12. Short-Circuit Breaking – The act of interrupting a short-circuit fault current, which can be very high and requires specialized equipment to handle safely. 13. Short Circuit Closing – The process of connecting a circuit under short-circuit conditions, often during testing or specific operational scenarios. 14. Near-Zone Fault Interrupt – The interruption of a short-circuit current that occurs in close proximity to the source, requiring precise timing and response from protective devices. 15. Contact Opening Distance – The total distance between the moving and static contacts of a switch when it is in the open (sub) position, indicating the insulation capability. 16. Stroke – The distance the moving contact travels from its initial position to the fully closed position of the switch, representing the mechanical movement range. 17. Overtravel – The additional movement of the moving contact beyond the point of contact closure during a closing operation, ensuring proper contact pressure and stability. 18. Opening Speed – The speed at which the moving contact moves during the opening (breaking) process, affecting the performance and safety of the switch. 19. Contact Separation Speed – The rate at which the moving contact separates from the static contact during the opening process, influencing the arc formation and interruption capability. 20. Closing Speed – The speed at which the moving contact moves toward the static contact during the closing operation, impacting the overall performance and reliability of the switch. 21. Contact Speed – The instantaneous speed of the moving contact as it makes contact with the static contact during the closing process, critical for reliable operation. 22. Breaking Speed – The velocity at which the moving contact moves apart from the static contact during the opening of the switch, crucial for effective current interruption. 23. Closing Speed – The speed at which the contacts move during the closing process, which is essential for ensuring proper engagement and minimizing wear. Mini colorimeter,Carry a colorimeter during business trips,Connect the phone colorimeter CHNSpec Technology (Zhejiang)Co.,Ltd , https://www.chnspec360.com