How To Minimize Unnecessary Economic Losses When Replacing High-voltage Disconnect Switches

In power system maintenance, replacing high voltage isolator circuit breakers is often accompanied by complexity and potential cost risks. Without comprehensive control over the work process, environment, and safety measures, it is likely to lead to equipment damage, rework, or prolonged power outages, resulting in unnecessary economic losses and operational disruptions.

Before replacing high voltage isolator switch circuit breakers, a professional team will rigorously verify the line load status. hv isolator circuit breakers do not have arc-extinguishing capabilities and are not suitable for interrupting load current. Before disconnection, it must be ensured that the relevant circuit breakers have been pre-disconnected, and that the operating environment is in a state of no current or minimal current.

During the work, insulated tools appropriate for the voltage rating must be used. Operators should be equipped with insulated gloves, insulated shoes, and dedicated insulated operating rods, and stand on a safety insulated mat. If the work site involves live busbars or complex busbar structures, a dedicated person should be assigned to monitor the work, and a safety zone should be established to prevent equipment damage or personal injury caused by misoperation, electric shock, or arcing.