Overview of load Isolation Switch

Promulgator : TAIXIDate : 2017-05-19Views : 428

Definition of Load Isolation Switch:
Load switch is a normal circuit in the working state, to break and close their own circuit switch device, which load switch which contains the arc device, the internal structure is also very simple.

The role of load isolation switch:
The function of the load isolation switch is mainly the combination of the fuse and the isolation switch. After the disconnection switch is disconnected, the current is running normally. It is the beginning of the fuse, the circuit fault current, so the load switch has some protective effect. Words.
But the load switch must be followed by the contactor can protect the motor circuit, to ensure that the operation will not overload, protect the components, to avoid burning, this is its main role is to protect the electrical.

Difference of load isolation switch and isolation switch:
We know that the load disconnect switch can turn off the load current, but can not break short-circuit current, short circuit fault is with its fuse in series with the protection. The load disconnect switch has a clearly visible disconnect gap as the isolation switch, so it can also isolate the power supply.

Installation of Load isolation switch:
In general, the installation of the load disconnect switch and isolation switch installation is roughly the same, but in the adjustment, the need to note the following:
(1) The main blade and the auxiliary blade of the load disconnecting switch should be in the order that the auxiliary blade is closed before closing, and the main blade is closed. When the main blade is opened, the main blade is disconnected and the auxiliary blade is disconnected.
(2) After the switch is opened, the distance between the blades should be in accordance with the requirements of the manufacturer. If the requirements are not reached, the position of the operating rod on the sector can be changed or the length of the rod can be adjusted.
(3) There is a small plug on the main blade of the switch, which should be inserted into the nozzle of the arc extinguishing device. Operation of the nozzle should not be violent collision, otherwise it should be handled.
(4) If a load switch with a fuse is installed, check that the rated current of the fuse is in accordance with the design before installation. The fuse tube should be inserted into the jaws during installation.