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HGF 250 kW 8P 355L/A/B 3Ph 400 V 50 Hz IC411 - TEFC - B3R(E)

Product: 13046661

The motors of the HGF line stand out for their high performance and low maintenance costs. The HGF motors are ideal for operation in a variety of applications that require high mechanical strength and durability.

Product features
Standard IEC 60034-1
Frequency 50 Hz
Voltage 400 V
Number of poles 8
Degree of Protection IP55
Synchronous speed 750 rpm
Output rating 250 kW
Mounting Foot-mounted
Flange Without
Mounting B3R(E)
Terminal box¹ Right position
Enclosure IC411 - TEFC


Product details

Electric Motors

Frame 355L/A/B
Output 250 kW
Number of Poles 8
Frequency 50 Hz
Rated speed 742 rpm
Slip 1.07 %
Rated voltage 400 V
Rated current 462 A
L. R. Amperes 2541 A
LRC 5.5
No load current 160 A
Rated torque 2370 ft.lb
Locked rotor torque 120 %
Breakdown torque 240 %
Locked rotor time 37s (cold) 21s (hot)
Moment of inertia (J) 418 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 -20°C to +40°C
Altitude 1000 m.a.s.l.
Degree of Protection IP55
Enclosure IC411 - TEFC
Mounting B3R(E)
Rotation¹ Both (CW and CCW)
Noise level² 70.0 dB(A)
Approx. weight³ 5612 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.


50% 75% 100%
94.6  95.3  95.3 

Power factor

50% 75% 100%
0.67  0.76  0.82 


Frame Material Cast Iron 
Impregnation Method Constant Resin Flow 
Regreasing System At Drive end and Non-drive end 
Space Heater Voltage 110-127/200-240 V 
Main terminal box hole 2xM80x2 
Terminal Block With terminal block W50 
Accessories Terminal Box With 
Shaft Locking Device With 
Drain Rubber, automatic 
Shaft Material SAE 4140 Carbon Steel 
Painting RAL 5009 214P (ISO 12944 - C5 I and C5 M) 
Grounding Lugs Double 
Fan Cover material Cast Iron 
Tropicalized Painting Without 
Fan material Aluminum 
Bearing cap Yes- Bearing Cap 
Winding thermal protection PT100 - 3 wires 2 per phase  
Bearing thermal protection PT100 - 3 wires 1 on DE bearing 
PT100 - 3 wires 1 on NDE bearing 
Balancing Method 1/2 Key 
Drip Cover Without 



Bearing details

  Drive End Non Drive End
Bearing type 6322 C3  6319 C3 
Sealing Taconite Labyrinth  Taconite Labyrinth 
Lubrication interval 4500 h  4500 h 
Lubricant amount 60 g  45 g 
Grease Type Mobil Polyrex EM 

Foundation loads

Max. traction Max. compression
8582 lb  14193 lb