Black is the hot side of the line, white the neutral side, green (or rarely bare) wire is the ground.
Megger the body and the earth point. It should be zero
break is connected with parallel to motor winding if the brake is d.c. is supply it must be connected with rectifier unit,when motor in ideal position the brake holds the shaft which is connected with gear and when motor starts the break coil will energise and motor shat became free and motor will run like this brake work
A DC shunt motor is a motor using DC supply with the the inductor connected parallel to the armature.
Ac motor have slip ring, to remove the slip ring,connected to the commutator its a dc motor.
If transformer then it refers to that, the primary is charged, but secondary is open, (no load is connected) If motor, it refers to that no load is connected to motor, the shaft is decoupled from the load, but running with out any load.
If the motor is connected to an ungrounded delta supply service there will be no effect on the operation of the motor. If the motor is connected to a wye system supply service and the B phase grounds out, the motor's overload protection would take the motor off line from the electrical supply.
Because everything always has to be grounded, for safety. If a 'ground' is not available, as in an aircraft, all the external containers for the different items of equipment are all connected together to the local 'earth'.
the blower motor relay is located next to the blower motor it is connected to the motor by a purple and black wires
A motor is grounded with a lug in the motor's junction box. The ground wire in the supply cable is connected to this point. This lug grounds the whole motor frame so if a fault to ground occurs, the fault current will return to the distribution panel where the motor's supply breaker will trip and open the circuit.
connecting motor to frame on bottom left and right of motor.
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The question is mine......take one dynamo and a motor (both of them are DC).. If The Dynamo is 12v and the motor is 9v...and connect together.....means the rotating shaft of a motor is connecting using a belt then the other end connected to the rotating shaft of the dynamo ......connect the wire parallel......let start... take a cotton thread of 15 cm ...then round the thread on dynamo rotating shaft the pull it....the current from dynamo flows to motor that action make the motor rotates but not constant.....
If the motor terminal has six terminals in the terminal box, then it can be connected either in delta or star. If there are only 3 terminal wires then the motor can not be connected in star.(it means that the motor is designed to be connected in delta only)
The wiring diagram ahows that the power feeds the motor all the time but its turned on by connecting the negative side on thru a relay. if a short is found in the wire and it grounds out then the motor will try and run. So either a wire is grounded between the antenna and the relay. Or the relay could be bad.
It's very likely your electronics are broken. I had this problem as well, found out that it wasn't grounded properly, so just relayed it to a part of the car that was properly grouned as it couldn't get rid of all it's energy. Looked around on the net and found an answer that worked for me, appears to be a bad earth connection. Cut black wire that goes to the motor. Should be 5 wires, Green, Mauve,White, Yellow and black. The black is the earth. Find a good position close by (usually hole on bracket near the motor for new earth point. Using bolt and preferable crimp connectors connect both ends of the black wire to the new earth. My experience was if i only connected the wire to the motor the blowers didn't work - hence I connected both ends of the black wire!
The connecting rod caps can lock up the motor if they are installed backwards. This makes it important to mark the connecting rod caps when removing them to prevent this problem from happening.
This box and circuitry is the relay for the pump.