HI GUYS IN THIS VIDEO I HAVE EXPLAIN ABOUT MANUAL-OFF-AUTO CONNECTION OF WATER PUMP MOTOR SO THAT YOU CAN TUN ON YOUR WATER PUMP MANUAL AND AUTO.
HERE I HAVE USE SOME MORE USEFUL COMPONENTS LIKE AS:
1. MINIATURE CIRCUIT BREAKER (MCB)
2. MAGNETIC CONTACTOR
3. OVERLOAD RELAY (OLR)
4. PUSH BUTTON SWTICH (NO) AND (NC)
5. SELECTOR SWITCH 2WAY MAN-OFF-AUTO
6. EMERGENCY STOP PUSH BUTTON SWITCH
7. PILOT LIGHT SIGNAL INDICATOR LIGHT LAMP
8. FLOAT SWITCH
IT’S VERY USEFUL CIRCUIT AND YOU CAN MAKE AND PREPARE VERY EASILY.
A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected.
A magnetic contactor is an electrically-controlled switch used for switching an electrical power circuit. A contactor is typically controlled by a circuit which has a much lower power level than the switched circuit, such as a 24-volt coil electromagnet controlling a 230-volt motor switch.
Thermal overload relays are protective devices. They are designed to cut power if the motor draws too much current for an extended period of time. To accomplish this, thermal overload relays contain a normally closed (NC) relay.
Indicator lamp consisting of a light to indicate whether power is on or a motor is in operation.
A pushbutton is a control device used to manually open and close a set of contacts.
(NO) pushbutton. Normally the contacts are open and no current flows through them.
Normally closed (NC) pushbuttons, are also used to open and close
emergency stop, emergency off and as an emergency power off, is a safety mechanism used to shut off machinery in an emergency, when it cannot be shut down in the usual manner.
Selector switches are operated by turning a knob instead of pushing a button. A very common selector switch is the MAN-OFF-AUTO switch. MAN stands for Manual and AUTO stands for Automatic.
A float switch detects the level of a liquid in a tank. Based on the water level, it will open or close an electrical circuit generally used to pump water in or out of the tank.
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