Motor Terminal Box Diagram

This is done by wiring the terminal board as shown in the wiring diagram to the right.

Motor terminal box diagram.

All terminal blocks are supplied with 3 brass terminal links to enable a star or delta motor lead termination. Locate the wiring diagram for your motor on the faceplate or inside of the cover you have. Wiring diagrams sometimes called main or construction diagrams show the actual connection points for the wires to the components and terminals of the controller. Wiring diagrams show the connections to the controller.

A range of electric motor terminal blocks. Turn off the power coming into the motor and open the cover which encloses the terminals. Wiring diagram book a1 15 b1 b2 16 18 b3 a2 b1 b3 15 supply voltage 16 18 l m h 2 levels b2 l1 f u 1 460 v f u 2 l2 l3 gnd h1 h3 h2 h4 f u 3 x1a f u 4 f u 5 x2a r. I phase i mains.

Cable terminations a ex db motors with flameproof terminal boxes. Delta connection terminal motor. 4 90 inc vat 4 08 ex vat add to cart. Electric motor terminal block transformer cable terminal block size tb3.

The marking of the terminal board is also defined in iec 60034 8. Here you will either find numbered wires with wire nuts or a set of screw terminals. If our power supply is 200 vac 3 phase we need to connected the cooper bar terminal in delta position it mean a connection are u1 with w2 v1 with u2 and w1 with u2 it just need to follow the diagram shown in motor nameplate. By short circuiting the terminals w2 u2 and v2 and connecting the mains to the w1 u1 and v1 you get a star y connection.

Electric motor wire marking connections. Diagram inside the terminal box lid. Basic wiring for motor control technical data. It mean terminal cooper plate w2 u2 and v2 connect in one line.

Terminal markings and internal wiring diagrams single phase and polyphase motors meeting nema standards introduction the following represents the most up to date information on motor terminal marking for proper connection to power source for all alternating current motors manufactured in accordance with standards adopted by. For specific leeson motor connections go to their website and input the leeson catalog in the review box you will find connection data dimensions name plate data etc. Star y connection. The type of connectors will depend on the manufacturer and size of the motor.

From this motor picture we can see it have 4 connection and 2 voltage value if our power supply voltage is 415 vac for 3 phase we need to setting the motor terminal in star connection. The cables used should be capable of carrying the full load current of the motor see motor nameplate without overheating or undue voltage drop.