Classification and application of load isolation switches

What is the isolation switch (switch)? Isolation switch in the line and have what effect? Is the main isolation switch device installed on a switch outside of each element, its role is in the maintenance of the line components will be disconnected from the power grid, in order to avoid the influence of other elements affected.
Classification of isolated switches (load isolation switches):
According to the installation location can be divided into indoor and outdoor isolating switch type isolating switch, isolating switch 1;
2, according to the each phase of isolation switch insulator number can be divided into single column type isolating switch, isolating switch and three double column type isolating switch;
3, the isolation switch in accordance with its no grounding knife gate can be divided into the grounding knife switch and the isolation switch without grounding knife switch;
4, the isolation switch according to the operation mode can be divided into single pole type isolation switch and three pole type isolation switch;
5, the isolation switch according to the movement of the knife gate can be divided into horizontal rotation of the isolation switch and vertical rotation of the isolation switch and insert type isolation switch.
Isolation switch use 1, isolated power supply
That is to say when we checked on one of the components in the line, we can use the power of this isolation switch components partition, which is in a power-off state, convenient operation and maintenance work personnel.
Isolation switch use 2, reverse gate
What is the inverted gate usually electrical equipment in the state can be divided into operation, standby, and maintenance of the three state. And the process of transforming a state of equipment into another state is called a reverse gate, which is performed by a reverse gate operation, which we can use to help us complete.
Isolation switch use 3, pull, close circuit
Generally speaking, isolation switch circuit can pull the voltage transformer and arrester circuit, busbar and capacitor current, and direct bus devices connected to the excitation current is less than 2A, no-load transformer and pull capacitance current not exceeding 5A load on the line.
It should be noted that there is no arc extinguishing device isolation switch, so it does not allow the load to pull, and the circuit, which in pull, when the circuit needs to be completed in the circuit breaker