Switching operation
Türkçe: Şalt manevrası
Opening and closing switchgear in a defined order to energise, de-energise or earth a section.
// EXPLANATION
The sequence is critical: when de-energising, the breaker opens first and then the disconnector; when energising, the reverse. Pre-operation checks (proving dead, earthing, warning signs) are tied to a written procedure.
// ALSO KNOWN AS
switching operationswitching sequenceswitching
// RELATED TERMS
Circuit breakerA switching device that can make and break normal load current and short-circuit current, opening the circuit on command from a protection relay during a fault.
DisconnectorA safety switch that opens a de-energised circuit to create a visible air gap; it has no capability to interrupt current.
MV switchgear cellA compartment where medium-voltage breakers, disconnectors, measuring and protection equipment are grouped inside a metal enclosure.
