relays are common in marine, off-shore, and off-highway designs; food processing, communications, and plants that process petroleum products; power-station and substation control panels; office automation equipment (such as
With the load of new substation grow with each passing day,more and more,which has different manufacturer,different types of the main transformer protection.Due to the protection of the different models,differential protection on differential current calculation is put in certain difference,ratio differe...
A circuit breaker is a switching device which can be operated manually as well as automatically for controlling and protection of electrical power system respectively. Before reading further, readWhat is a Circuit breakerandWhat is Switchgear. Circuit Breakers are classified into a number of types, ...
Online contact diagnostics can be performed after the unit is manufactured or while the unit is already operating in the substation. The overall condition of the switching apparatus, including its current paths and connecting terminals, is evaluated. The static method consists in injecting direct curre...