The AKH 280S KFF1 electric motor is a three-phase, 50 kW industrial motor designed for continuous S1 duty cycle operation. Built with a durable cast iron enclosure and a steel plate fan cover, it features a Totally Enclosed Blower Cooled (TEBC - IC416) cooling system with forced ventilation operating at 230/400V. This IEC standard motor operates at 60 Hz with frequency inverter (VFD) starting and control, achieving an IE2 High Efficiency level up to a maximum frequency of 60 Hz. It is rated for altitudes up to 1000 m.a.s.l. and ambient temperatures ranging from -20°C to 40°C. The unit includes Class F insulation, IP55 protection, and a RAL 7032 finish color. It is equipped with an FF 300 steel flange, a special shaft end, and features D.E. and N.D.E. bearings with shields and ZZ-C3 internal clearance, designed for a L10h bearing life of 25,000 hours. Sealing consists of a Viton lip seal ring and an N.D.E. lip seal.
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| Manufacturer | AKH |
|---|---|
| Country | |
| Part number | 280S KFF1 |
| Inner Code | 4823481 |
| Product type | 280S KFF1 electric motor |
|---|---|
| Power | 50 kW |
| Poles | 04 |
| Frame Size | 280S |
| Voltage | 400/690 V with 6 Cables |
| Mounting | B5T |
| Catalogue Number | 52521.12/002 |
| Altitude | 1000 m.a.s.l. |
| Bearing L10h Life | 25.000 hours |
| Cooling | TEBC - Totally Enclosed Blower Cooled - IC416 |
| Duty Cycle | S1 - Continuous |
| Enclosure Material | Cast Iron |
| Frequency | 60 Hz |
| Insulation Class | F (DT=F) |
| Maximum Ambient Temperature | 40°C |
| Minimum Ambient Temperature | -20°C |
| Phases | Three-Phase |
| Protection Degree | IP55 |
| Rotation Direction | CW – Clockwise |
| Standard | IEC |
| Starting Method / Efficiency Level | Frequency Inverter - VFD / IE2 – High Efficiency |
| Forced Ventilation Voltage | 230/400V |
| Finish Color | RAL 7032 |
| Shaft End | With Special Shaft End |
| D.E. Bearing | Shield and Internal Clearance: ZZ-C3 |
| N.D.E. Bearing | Shield and Internal Clearance: ZZ-C3 |
| Protection | Thermistor 150ºC Shutdown - Winding |
| Fan Cover Material | Steel Plate |
| Maximum Frequency | 60 Hz |
| Certification | CE |
| Cables Entries | Turned to Fan Cover |
| Balancing | Normal with 1/2 Key |
| Flange | FF 300 steel flange |
| Sealing | Viton Lip Seal Ring |
| N.D.E. Sealing | Lip Seal |