SFG operating mechanism
SFG operating mechanism can be divided into two types: K type single spring operating mechanism, A type double spring operating mechanism.
Manual operating mechanism
K type single spring operating mechanism: as a inlet control unit, the working principle of K type spring operating mechanism is spring press and release.
1,Earthing operation: driven by the handle, upper crank arm rotates and presses spring 2 to store energy, when the max energy reaches continue rotate the rank arm, the energy storage spring starts to release energy and drive the upper trigger, enables the connecting bar to drive the crank arm, crank arm rotates and drives the moving contactor for earthing.
2,Switch on operation: driven by the handle, lower crank arm 1 rotates, presses spring 2 to store energy, when the energy released, it drives the trigger 8, enables connecting bar to drive the crank arm, crank arm rotates and drives the moving contactor and load break switch turns on.
3,Switch off operation: rotate the main shaft crank arm counterclockwise by the handle, release the energy storage spring and the load break switch turns off.
A type spring dual-function operating mechanism: as a outlet control unit. Working principle of A type mechanism is same as K type, in addition, it has fuse striker trip function. For A type mechanism. Electromagnetic trip is also available for customers requirement.
1,Switch on operation: driven by the handle, lower crank arm 1 rotates to press switch on spring 12 and switch off spring 8 at the same time, to provide sufficient energy required by switching off. When the lower crank arm 1 buckles the pin and drives trigger to move, it makes the lower roller wheel tripped, and release the switch on spring and load break switch turns on.
2,Switch off operation: press the switch off button or push the trip pin 2 by the fuse striker, release the spring and load switch turns off.
3,Earth operation: earthing operation of A type mechanism is the same as that of K type.
Motorized operating mechanism
Motor operation can be added to both types of operating mechanisms, which means it can be operated manually or motorized.
Operating voltage: DC48V AC/DC 110V 220V
SFG operating mechanism features:
1,Delicate, convenient, durable structure
2,One gudgeon：opening /closing/grounding operation + switch -state indication
4,Breaking coil of parallel-connection and manual trip button are both optional parts
5,Integrated spring facility by dynamoelectric operating is available to choose
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