BS EN 60143-3 is the third part of an international standard used for Series capacitors for power systems.
BS EN 60143-3 applies to internal fuses designed to isolate faulty capacitor elements, to allow operation of the remaining parts of that capacitor unit and the bank in which the capacitor unit is connected. Such fuses are not a substitute for a switching device such as too a circuit-breaker, or for external protection of the capacitor bank, or any part thereof.
The object of BS EN 60143-3 is:
Note: External fuses for series capacitors are treated in IEC 60143-1:2004, Annex A: "Test requirements and application guide for external fuses and units to be externally fused".
BS EN 60143-3 on Series capacitors for power systems is useful for:
Internal fuses situated on capacitors racks are useful in clearing the fault that takes place in capacitor units or any other accessories that failed.
BS EN 60143-3 provides the performance requirements which can be used according to their operational requirements.
BS EN 60143-3 can be your best guide in conducting the test method for internal fuses that are used in electronic capacitors. This test method helps in discharging the current flow from elements or units connected with the faulty element or unit. BS EN 60143-3 is useful in identifying the power frequency fault current.
By applying BS EN 60143-3 you can construct these fuses according to the range of current and voltages which are dependent on the capacitor designs. This ensures sustainability and prevents the capacitors from failure.
EN 60143-3:2015
IEC 60143-3:2015