2. Short circuit protection: The air switch is a switch that trips as long as there is a short circuit and the switch forms a loop.
3. The principle of the air switch is that when the line is short-circuited or severely overloaded, the short-circuit current exceeds the instantaneous tripping setting current value, and the electromagnetic tripping device generates enough suction force to attract the armature and hit the lever to make the hook around the shaft seat Rotate upwards to release the lock, and the lock breaks the three main contacts under the action of the reaction spring to cut off the power supply.
4. Loss of voltage protection Undervoltage protection: The coil of the contactor is generally connected in parallel with the electrical equipment. If there is a voltage loss or undervoltage, the electrical equipment will be burnt due to lack of phase, and the contactor has loss of voltage and undervoltage During protection, if the voltage is not enough or the phase is missing, the contactor will trip and use electrical equipment to disconnect. So as to protect the electrical equipment from burning due to lack of phase or undervoltage.
Therefore, the electrical self-locking circuit of the hydraulic baler is particularly important and requires key protection.