Motor/Control Division

Frame	280S/M
Output	50 HP (37 kW)
Number of Poles	8
Frequency	50 Hz
Rated speed	740 rpm
Slip	1.33 %
Rated voltage	380 V
Rated current	73.9 A
L. R. Amperes	443 A
LRC	6.0
No load current	31.6 A
Rated torque	350 ft.lb
Locked rotor torque	160 %
Breakdown torque	200 %
Locked rotor time	57s (cold) 32s (hot)

Moment of inertia (J)	66.9 sq.ft.lb
Design	N
Insulation Class	F
Service factor	1.00
Temperature rise	80 K
Duty Cycle	S1
Starting Method	Direct On Line
Ambient temperature	-20Â°C to +40Â°C
Altitude	1000 m.a.s.l.
Degree of Protection	IP55
Enclosure	IC411 - TEFC
Mounting	B3L(E)
RotationÂ¹	Both (CW and CCW)
Noise levelÂ²	59.0 dB(A)
Approx. weightÂ³	1484 lb

(1) Looking the motor from the shaft end.; (2) Measured at 1m and with tolerance of +3dB(A).; (3) Approximate weight, subject to be changed after manufacturing process.; (4) At 100% of full load.

Efficiency

50%	75%	100%
93.9	94.1	93.9

Power factor

50%	75%	100%
0.67	0.76	0.81

Frame	280S/M
Output	50 HP (37 kW)
Number of Poles	8
Frequency	50 Hz
Rated speed	740 rpm
Slip	1.33 %
Rated voltage	400 V
Rated current	71.8 A
L. R. Amperes	431 A
LRC	6.0
No load current	34.0 A
Rated torque	350 ft.lb
Locked rotor torque	180 %
Breakdown torque	229 %
Locked rotor time	57s (cold) 32s (hot)

Moment of inertia (J)	66.9 sq.ft.lb
Design	N
Insulation Class	F
Service factor	1.00
Temperature rise	80 K
Duty Cycle	S1
Starting Method	Direct On Line
Ambient temperature	-20Â°C to +40Â°C
Altitude	1000 m.a.s.l.
Degree of Protection	IP55
Enclosure	IC411 - TEFC
Mounting	B3L(E)
RotationÂ¹	Both (CW and CCW)
Noise levelÂ²	59.0 dB(A)
Approx. weightÂ³	1484 lb

(1) Looking the motor from the shaft end.; (2) Measured at 1m and with tolerance of +3dB(A).; (3) Approximate weight, subject to be changed after manufacturing process.; (4) At 100% of full load.

Efficiency

50%	75%	100%
93.7	94.2	94.2

Power factor

50%	75%	100%
0.63	0.73	0.79

Frame	280S/M
Output	50 HP (37 kW)
Number of Poles	8
Frequency	50 Hz
Rated speed	740 rpm
Slip	1.33 %
Rated voltage	415 V
Rated current	70.9 A
L. R. Amperes	425 A
LRC	6.0
No load current	36.1 A
Rated torque	350 ft.lb
Locked rotor torque	200 %
Breakdown torque	250 %
Locked rotor time	57s (cold) 32s (hot)

Moment of inertia (J)	66.9 sq.ft.lb
Design	N
Insulation Class	F
Service factor	1.00
Temperature rise	80 K
Duty Cycle	S1
Starting Method	Direct On Line
Ambient temperature	-20Â°C to +40Â°C
Altitude	1000 m.a.s.l.
Degree of Protection	IP55
Enclosure	IC411 - TEFC
Mounting	B3L(E)
RotationÂ¹	Both (CW and CCW)
Noise levelÂ²	59.0 dB(A)
Approx. weightÂ³	1484 lb

(1) Looking the motor from the shaft end.; (2) Measured at 1m and with tolerance of +3dB(A).; (3) Approximate weight, subject to be changed after manufacturing process.; (4) At 100% of full load.

Efficiency

50%	75%	100%
93.4	94.1	94.3

Power factor

50%	75%	100%
0.60	0.71	0.77

Frame	280S/M
Output	50 HP (37 kW)
Number of Poles	8
Frequency	60 Hz
Rated speed	890 rpm
Slip	1.11 %
Rated voltage	460 V
Rated current	64.1 A
L. R. Amperes	429 A
LRC	6.7
No load current	31.8 A
Rated torque	291 ft.lb
Locked rotor torque	200 %
Breakdown torque	270 %
Locked rotor time	81s (cold) 45s (hot)

Moment of inertia (J)	66.9 sq.ft.lb
Design	N
Insulation Class	F
Service factor	1.25
Temperature rise	80 K
Duty Cycle	S1
Starting Method	Direct On Line
Ambient temperature	-20Â°C to +40Â°C
Altitude	1000 m.a.s.l.
Degree of Protection	IP55
Enclosure	IC411 - TEFC
Mounting	B3L(E)
RotationÂ¹	Both (CW and CCW)
Noise levelÂ²	63.0 dB(A)
Approx. weightÂ³	1484 lb

(1) Looking the motor from the shaft end.; (2) Measured at 1m and with tolerance of +3dB(A).; (3) Approximate weight, subject to be changed after manufacturing process.; (4) At 100% of full load.

Efficiency

50%	75%	100%
93.0	94.1	94.1

Power factor

50%	75%	100%
0.59	0.71	0.77

Features

Frame Material	Cast Iron
Impregnation Method	Constant Resin Flow
Regreasing System	At Drive end and Non-drive end
Main terminal box hole	2xM63x1,5
Terminal Block	BMC - 6 pins
Shaft Locking Device	Without
Drain	Rubber, automatic
Shaft Material	SAE 1040/45 Carbon Steel
Painting	RAL 5009 203A (ISO 12944 - C2)
Grounding Lugs	Double
Fan Cover material	Cast Iron
Tropicalized Painting	Without
Fan material	Plastic
Bearing cap	Yes- Bearing Cap
Balancing Method	1/2 Key
Drip Cover	Without
Overload protector (phenolic)	Without overload protector