YE4-280S -4T1 Three-phase Asynchronous IP 55 Protection Motor 75kw 380V

Xi’an Simo Motor Co., Ltd. is one of the leading manufacturers and suppliers of YE4-280S -4T1 Three-phase Asynchronous IP 55 Protection Motor 75kw 380V in China. With abundant experience, we are committed to providing high quality customized products with competitive price. We warmly welcome you to buy bulk premium products made in China here and get quotation from our factory.

Brief Introduction

When a production line runs around the clock, the drive at its heart decides how much energy the plant consumes and how often the maintenance team is called out. The SIMO YE4 series is a premium-efficiency three-phase asynchronous motor engineered for exactly that kind of duty: continuous operation, high load factors and long service intervals. Buyers who compare a conventional induction motor with an ip 55 protection motor usually notice the difference first in efficiency, then in temperature rise and in noise - and the YE4 range is built to win that comparison at every frame size.

Design and construction. The series uses a rigid cast-iron frame with integrally cast feet, deep cooling fins and a generously dimensioned terminal box that accepts cable entry from either side. Stator windings are copper, vacuum-impregnated and insulated to Class F (155 °C), which leaves a wide thermal margin under continuous load. Rotors are dynamically balanced to keep vibration and bearing load low. Protection is IP55 as standard, so the motor tolerates dust, splash and humid plant atmospheres without extra enclosures. Bearings are C3-clearance rolling bearings - 6317/C3 at the drive end and 6313/C3 at the non-drive end on the 250 frame - lubricated for long intervals and easy to regrease in service.

Efficiency and performance. Efficiency is the reason most customers specify this family. A 75 kW, 4-pole unit reaches 96.0% at full load with a power factor of 0.87, drawing 136 A at 380 V and running at 1490 r/min. The design meets the energy-efficiency grading required by GB 18613 and is verified against JB/T 13299, with CE marking for export markets. Lower losses mean lower winding temperature, longer insulation life and a measurably smaller electricity bill across a ten-year operating period.

Inverter duty. The windings withstand the voltage spikes and higher harmonic content produced by PWM drives, so the motor can be paired with a variable-frequency inverter for speed control without derating at normal ambient temperatures. That makes the series a natural fit for flow regulation in pumping and fan systems, where running slower instead of throttling usually saves far more energy than any single component upgrade.

Range and flexibility. Frame sizes, pole numbers and voltages span the whole range, so a plant can standardise on one motor family for every duty on site. Whether the requirement is a 75 kW workhorse for a screw compressor or an ip 55 protection motor for a centrifugal pump, the same insulation system, bearing practice and test routine apply. Foot, flange and vertical mounting arrangements, terminal-box positions and winding variants for 50 Hz or 60 Hz supplies are all specified at the time of order.

Typical applications. Water supply and treatment, HVAC air-handling units, fans and cooling towers, pumps, compressors, conveyors, mixers, machine tools and general mechanical drives. The combination of IP55 protection, Class F insulation and modest temperature rise suits both indoor plant rooms and reasonably sheltered outdoor installations, and the low starting current keeps demand charges predictable on weak supplies.

Reliability and support. Each motor is routine-tested for winding resistance, insulation strength, no-load current, speed and vibration before dispatch, and the test record travels with the unit. The 250 frame weighs 562 kg, so handling and alignment are straightforward with standard lifting points. Spare bearings, terminal-box gaskets and winding data are held as catalogue items, which keeps unplanned stops short, and technical support can advise on load calculations, VFD operation and replacement sizing.

Ordering. Please quote frame size, power, pole number, voltage, frequency, mounting arrangement and any special requirements such as space heaters, encoders, brakes or tropicalised windings. Drawings, test certificates and lead times are issued with every quotation. For pricing, stock availability or engineering advice - including an ip 55 protection motor for a like-for-like replacement - contact Xi'an Simo Motor Co., Ltd. 

Main Technical Parameters

Production Details

Frame

• Compact and robust iron casting frame

• Universal IEC installation dimensions available

• Customizable outlook and dimensions

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Stator

• 99.9% pure copper winding for stator to ensure the output power and efficiency

• Excellent insulation system with 5 more processing flows

• All the windings are fitted in by handwork to ensure all slots are full and avoid any winding flaw.

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Rotor

• Aluminum casting rotor with high quality silicon steel rotor core to assure induction efficiency

• Well and precisely machined shafts with good capacity of strength and toughness

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Testing

• All motors must pass the piece testing before painting and packaging

• Type tests will be regularly performed for each series, more often for new developed series and variants.

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Package and delivery

• All motors will be packaged well before delivery

• Plastic cover inside, vacuum tin foil outer and then solid wood box

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Applications

This series of motor is commonly used to drive water pumps, fans, compressors, conveyors and other transmission machinery in energy conservation and environmental protection transformation projects, national water conservancy projects, etc.

Power 

Pump

Sugar

Water conservation

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