Load,Break,Switch,Inpower,appl business, insurance Load Break Switch
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Inpower applications, switches perform function to energize orunenergized an electric load. On the high end of the scale areload-break switches and disconnecting switches in power systems atthe highest voltages (several hundred thousand volts).Load-breakswitches are required to maintain the capability of interrupting theload current. The load break switch in a circuit with several hundredthousand volts, designed to carry a large amount of current withoutoverheating the open position, having enough insulation to isolatethe circuit in closed position, and equipped with arc interrupters tointerrupt the load current.Loadbreak switches of air break are of versatile switch gear fortransformer control & protection. They can also be used for Motorfeeder in conjunction with Vacuum contactors. They arehighly useful for Ring feeders for isolation of faulty section eithermanually or through remote control if fitted with motor operation.Load break switch in conjunction with HRC fuse can tackle high faultcurrent and offer very good protection against dead short circuitcapacity up to 40KA.The fault clearance and isolation through thiscombination will be achieved in a few milli seconds provided a properselection of LBS and fuse is done. HRC fuses are manufactured withsilver strips/silver coated Cu. Strips wires surrounded by granularquartz. When short-circuit occurs the metal element melts and themolten metal melts the surrounding quartz, making the combination aninsulating material, called fulgarite. There will be a number ofsections in the element which will create similar insulating media inquick succession and thus the arc will be extinguished in a matter offew milliseconds, say 5 to 8 milli-seconds, ie., less than 1/2 acycle.Electronic Engineering Services Article Tags: Load Break Switch, Load Break, Break Switch
Load,Break,Switch,Inpower,appl