Accidental locking device
Accidental locking device is a locking device that prevents electrical malfunction. Such as mechanical locking device, electrical locking device, microcomputer error-proof locking device, electromagnetic lock , program lock, etc.
Five preventions
Prevent mis-opening and mis-closing of switches, Knife switches ; Prevent pulling and closing Knife switches with load; Prevent live hanging (closing) of grounding wires (Knife switches); Prevent closing switches with grounding wires (Knife switches), Knife gate; prevent accidental entry into live spaces.
management content and requirements
usage principles and technical requirements
1 Strict implementation of " two votes and three systems " is an organizational measure to prevent misoperation; the correct installation and use of the anti-misoperation locking device is a technical measure to prevent misoperation. The two are lacking. Not even one.
2 All high-voltage electrical equipment that may cause misuse should be equipped with an anti-accidental locking device, and should correspond to the operating requirements and location of the equipment.
3 Electrical anti-accidental locking devices must adhere to "simultaneous design, simultaneous construction, and simultaneous production" with primary electrical equipment. Newly invested electrical equipment is not allowed to be put into operation without anti-accidental locking devices.
4 The anti-accidental locking device must have the "five prevention" functions.
5 The anti-accidental locking device should be simple in structure, reliable, easy to operate and maintain, and should not increase the complexity of normal operation and accident handling; it should not affect the main technical performance of the primary equipment (such as opening and closing time, speed, etc.) and the secondary circuit (relay). Electrical protection, control loop ) reliability.
6 The anti-accidental locking device should be waterproof, dustproof, foreign matter-proof, rust-proof, and non-sticky. The outdoor anti-accidental locking device should be waterproof, moisture-proof, and mildew-proof.
7 The DC power supply used in the anti-accidental locking device should be separated from the power supply of the relay protection and control circuits, and the AC power supply used should be an uninterrupted power supply system.
