A load break switch (LBS) is a disconnect switch that has been designed to provide making or breaking of specified currents. It is typically used in high-voltage applications, such as those with loads of more than 107 HP. LBSs are placed in between the metering cubicle and the distribution transformer to provide a safe and reliable way to disconnect the load from the power supply.
In case of low-voltage (LT) applications, the source is directly connected to the LBS through a cable. This is because the load currents in LT applications are typically much lower than those in high-voltage applications.
LBSs have a number of advantages over other types of disconnect switches:
Here are some additional details about LBSs:
Construction: LBSs are typically constructed of metal, such as steel or aluminum. This makes them strong and durable.
Operating mechanism : LBSs are typically operated manually, but they can also be operated remotely.
Arc suppression: LBSs typically have arc suppression devices, such as arc horns or vacuum interrupters. These devices help to extinguish the arc that is created when the contacts are separated, preventing it from spreading and causing damage to the switch.
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