NEMA ODP Single Phase Electric Induction Motor

ODP Single Phase Induction Motor

ODP (Open Drip Proof):An open motor in which the ventilating openings are so constructed that drops of liquid or solid particles falling on it, at any angle not greater than 15 degrees for the vertical, cannot enter either directly or by striking and running along a surface of the motor. Designed for reasonably dry, clean, and well ventilated (usually indoors) areas. Outdoor installations require the motor to be protected with a cover that does not restrict the flow of air to the motor.

NEMA ODP Single Phase Induction Motor

NEMA ODP series are single phase rolled-steel motors with open drip proof,are ac motors,INDUCTION MOTOR. The electrical motors are developed by ourselves independently according to NEMA. The output rated power and mounting dimensions of the electrical motor are perfectly in accordance with NEMA. The NEMA ODP motors have reasonable structure, small vibration and low noise,they are made in china.

ODP Vs. TEFC NEMA Price Difference

TEFC motors are generally more expensive. This is because they contain an extra piece of equipment — the fan — and they serve a specialized purpose. Also, TEFC motors have a thinner, larger casing to allow for better heat dissipation, which adds to the cost.

Differences between NEMA and IEC electric motors

IEC motors are commonly made with either finned cast aluminum or iron frames, while NEMA motors are made with the finned cast frames and rolled steel frame housings. There are only slight differences in frame sizes based on shaft height. The shaft diameters and lengths are different between NEMA and IEC as are the mounting base dimensions and mounting hole spacing.

An especially important difference is that NEMA motors commonly use a polyurea-based grease where most IEC motors use lithium grease. These greases are not compatible and should not be mixed. If a plant’s motor population is mixed between NEMA and IEC, care must be taken when someone is sent to regrease motors.

Typically, NEMA motors are made with a side-mounted conduit box (F1 position) with leads for connections. Most IEC motors have the conduit box at 12-o’clock (F3) with a terminal block for connections.

NEMA motors usually do not have a shaft seal except for some severe duty designs such as those made for IEEE-841 compliance where a noncontact rotating shaft seal is used. In some custom designs, a lip seal may be used on the shaft to prevent ingress of liquids. Many IEC motors are supplied with a standard lip seal.

NEMA motors often have a “weep hole” at the lowest point of each end plate to allow condensation to exit. On severe duty motors, this hole is changed to a breather drain. This practice is not common on IEC motors.

Over the past few years, NEMA has started to adopt IEC standards as part of MG 1. The levels of ingress protection (IP) for motors and for cooling (IC) are shown in the MG 1 standard. Recently, the vibration standards have been harmonized.

Technical Features Of NEMA ODP Single Phase Electric Induction Motor

1. Service Factor 1.15
2. Continuous Duty 40ºC Ambient
3. ODP (Open Drip Proof)
4. Class F Insulation With Class B Temp Rise
5. NEMA Design L
6. High Starting Torque and Low Starting Current
7. Rolled Steel Construction
8. Ball Bearings
9. Capacity Start/ Capacitor Run (1/3 thru 10 HP)
10. Rigid Base

Applications of NEMA ODP Single Phase Electric Induction Motor

1. Commercial Pumps
2. Swimming Pool Pumps
3. Fans
4. Conveyors
5. Air Conditioning Equipment A.K.A HVAC
6. Small Machine Tools
7. Blowers
8. Augers
9. Household Electric Appliances
10. Equipment Requiring Direct Drive
11. High Starting Torque