Switch Disconnector Fuse | SDF | Difference Between SFU and SDF | L&T SDF | 3 Phase SDF Malayalam

Switch Disconnector Fuse | SDF | Difference Between SFU and SDF | L&T SDF | 3 Phase SDF Malayalam

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In this video, I have explained What is SDF Switch disconnector fuses in Malayalam. How to SDF works in Malayalam. Advantages and disadvantages of SDF over SFU.
L&T FN 63, 63A AC 23A model SDF or switch disconnector fuses. Things take take care while purchasing SDF or any electrical equipment.

SDF is a disconnector that is a mechanical device that fulfils the requirements specified for the isolation function in the open position, as specified in IEC 60947-1. But the purpose of an isolator is to cut off the supply from all or a discrete section of the installation by separating the installation or section from every source of electrical energy for safety reasons. Switches are mechanical devices which are capable of making, carrying and breaking currents under normal circuit conditions and also specified time operating in overload conditions. Switch Disconnector Fuses is a combination of properties of load switches, disconnectors and also protection offered by fuses.

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