Introduction to the fault checking and solution of circuit breaker

     A circuit breaker is a device that cuts or closes the current in a circuit and provides protection to the line. It has achieved a wide range of applications. But its failure is inevitable, we should check it in time and find a solution. Here to learn together the fault check and solution of the circuit breaker.

　　First of all, check the operating mechanism of the panel there is no sinking situation. If it sinks, it will have a great impact on the transmission mechanism, and the contact stroke associated with it will be obstructed, and the possibility of successful closing will be reduced, thus causing problems. So what are the solutions? In fact, you just need to adjust the screw of the lower screw loose panel, fix it, lift the panel gently upward, fix the screw again, and there will not be much problem.

　　The correct position of the stopper is also closely related to the normal operation of the circuit breaker. In the guide above the stop, we find that its position is not correct when you can adjust to avoid more serious things. Use the stop to top the outside of the half-shaft, which is to keep the half-shaft and jump buckle, thus avoiding many failures.

　　Failure is also likely to occur on the loss-of-voltage decoupler. When it is not in the correct suction position, its metal piece will make the decoupling mechanism move under the action of spring force. We should have to check the filter capacitor. Then see if the loss of voltage decoupler coil has an open circuit, see if there is any deformation of the metal above, and pay attention to the metal sheet and the top bar away from each other within about 0.5 to 1 mm. Among the above details, if the filter capacitor is bad, it is necessary to replace it in a timely manner, and the loss-of-voltage decoupler coil should also be replaced when it is open, the spring plate should be corrected for deformation, and the gap needs to be adjusted.

　　If the shunt release in the suction position, what will be the impact on the circuit breaker? It will appear to trip after closing. When we check, we mainly look at the contacts of its circuit break button has not been sintered together. If its metal deformation, or the gap is not right, the possibility of tripping is also very large.

　　For the inspection of the free release device, you need to observe whether the cover plate is deformed, and then observe the effective size of the live knuckle bolt inside the free release device mechanism is not within a reasonable range. If the cover plate is deformed, you can remove it for correction, the size of the problem requires you to remove the cover plate and remove the cotter pin, adjust the knuckle bolt, connect the center of the three axes just so that it is in the center of the three round holes in the cover plate. See the above failure analysis of each detail, I hope it can help friends better use, only careful inspection, can reduce the occurrence of failure.