Premium Efficient

31NDM-3-20-9

20HP, 8P, 3Ph, 208-230/460V 60Hz, 190/380V 50Hz , 324TD, TEFC, F1, D-Flange, Premium Efficient Motor

PRODUCT GROUP

Premium Efficient

HP / OUTPUT

20

RPM

900

PHASE

3

VOLTAGE

208-230/460V 60Hz, 190/380V 50Hz

FRAME

324TD

FLANGE

D-Flange

DEGREE OF PROTECTION

IP55

MOUNTING POSITION

F1

ENCLOSURE

TEFC

Part Number

31NDM-3-20-9

Product Family

Premium Efficient

Series

31N Series

Horsepower

20

Phase

3

Synchronous Speed

900

Nominal Speed

880

Frequency

60

Voltage

208-230/460V 60Hz, 190/380V 50Hz

Frame

324TD

Frame Material

Cast Iron

Flange

D-Flange

Flange Type

-

Feet

YES

Removable Feet

NO

Rotatable Feet

NO

Double Drilled Feet

NO

Winding Connection

Double Delta / Delta

Full Load Torque (lb-ft)

119.4

Lock Rotor Torque (%)

210

Break Down Torque (%)

230

Full Load Amps

62.6 A @ 208V, 56.6 A @ 230V, 28.3 A @ 460V, 22.7 A @ 575V

LRA (%)

Lock Rotor Amps

290 A @ 230V, 145 A @ 460V

Efficiency @ 100% Load

91.7

Power Factor @ 100% Load

73

kW @ 50 Hz

Synchronous Speed @ 50 Hz

750

Nominal Speed @ 50 Hz

725

Voltage @ 50 Hz

Values

Full Load Torque (lb-ft) @ 50 Hz

Lock Rotor Torque (%) @ 50 Hz

Break Down Torque (%) @ 50 Hz

Full Load Amps @ 50 Hz

67.6 A @ 190V, 33.8 A @ 380V

LRA (%) @ 50 Hz

Efficiency @ 100% Load 50 Hz

Power Factor @ 100% Load 50 Hz

Design Code

B

Duty Rating

Code Letter

B

Service Factor @ 60 Hz

1.15

Service Factor @ 50 Hz

1

Insulation Class

F

Inverter Rated

Bearings (DE / ODE)

6312 (DE), 6212 (ODE)

Impregnation Method

Dip and Bake

PTC Thermistors

Space Heater

Junction Box Material

Cast Iron

Fan Guard Material

Steel

Shaft Seal

Mounting Position

F1

Degree of Protection

IP55

Enclosure

TEFC

Finish

Blue

Net Weight (lbs)

650

Ship Weight (lbs)

690

Warranty Period

3-Years