Water inlet motor protection circuit
Source: InternetPublisher:风向西瓜 Keywords: protection circuit motor protection motor relay Updated: 2020/05/16
Use a relay to protect the circuit of a water-immersed motor as shown in the figure. When the commercial button SB2 is pressed, KM is powered and self-suppressed, and the motor M starts
to run. If water enters the motor at this time and submerges the probe A. Through the water, A is connected to the casing, relay K is closed, and the normally closed contact
is disconnected. KM is released when power is lost, and motor M stops. At the same time, HA sounds the alarm.
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