Today my new department (Protection Control and Monitoring) went out to work on a circuit breaker (CB).
A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation.
Circuit breakers are made in varying sizes, from small devices that protect low-current circuits or individual household appliance, up to large switchgear designed to protect high voltage circuits feeding an entire city. The generic function of a circuit breaker, a fuse, as an automatic means of removing power from a faulty system is often abbreviated as OCPD (Over Current Protection Device). To learn more about a circuit breaker follow he link https://en.wikipedia.org/wiki/circuit_breaker
My team and i working on the circuit breaker.
The circuit breaker was not opening on remote (automatically) so after about about an hour of investigation. My team discovered that the problem was from the control room. Which lead to my department applying for permission to work in the control room.
My Senior Manager explain our findings to the Engineer on duty in system operations.