YE4 IE4 Three Phase Induction Motor (H80–355)

YE4 IE4 Motor Overview

The YE4 series is Yaoda Motor's IE4 efficiency platform for general industrial drives. It is produced as a totally enclosed, fan-cooled squirrel-cage three phase asynchronous motor in IEC frame sizes H80–355, and it meets the Grade 2 efficiency requirements of GB 18613-2020 together with the IE4 efficiency level defined in IEC 60034-30-1.

Against an IE3 motor of the same rating, the YE4 platform reduces losses at the same output and speed, which matters most on machinery that runs for long hours each year — pumps, fans, compressors, conveyors and similar production equipment. The models listed in the performance table below cover 0.55–355 kW in 2-, 4-, 6- and 8-pole versions at 380 V. Voltage, frequency, mounting arrangement and protection rating are confirmed for each project before the order is placed. The lower and higher efficiency platforms are covered by the YE3 IE3 induction motor and YE5 IE5 induction motor ranges.

Technical Specifications – YE4 IE4 Three Phase Induction Motor (H80–355)

The published table uses the model designation YE4-315M-4 for both the 132 kW and 250 kW entries. The correct model designation for these entries requires manufacturer confirmation before selection.

The table below lists the published YE4 models together with power, current, speed, efficiency, power factor, torque, weight and noise data. The ratings in this table are stated at 380 V, 50 Hz for the listed models. 60 Hz operation and other voltage configurations are project configurations; their ratings and test conditions are confirmed before order.

Manufacturing and Quality Inspection

YE4 motors are manufactured by Anhui Yaoda Motor Co., Ltd. in Chuzhou, Anhui Province — a 20,000 m² plant established in 2009 and organised into machining, winding, testing, assembly and logistics areas. Quality is controlled at each production stage rather than only at final inspection, under an ISO 9001 quality management system.

Stator Winding, Wire Embedding and Insulation

Stator winding, wire embedding, slot wedge installation and insulation treatment are carried out on automated winding and embedding lines, which keeps winding consistency and insulation strength stable from batch to batch. Insulation treatment for the relevant stator designs includes VPI impregnation capability; the insulation process applied to a specific YE4 model is stated in the order documentation rather than assumed for the whole series.

Machining, Assembly and Testing

Housings, end covers and shafts are CNC-machined against drawings before assembly, so mounting dimensions, shaft dimensions and fits stay within tolerance for replacement and OEM projects. Wound stators pass electrical and insulation testing before assembly, and finished motors are routine-tested before shipment. The type test laboratory covers no-load and load testing, temperature rise testing, vibration and noise inspection, insulation testing, efficiency verification and power factor testing, and motors are released with a test record.

Further detail on the production areas is published on the factory page. Buyers who need test records or inspection documents for a project can request them with the enquiry.

Industrial Applications

YE4 IE4 motors are specified where machinery runs for long hours and the cost of losses over the equipment life is significant. Typical duties include:

• Pumps — continuous duty, medium starting torque, often with variable-speed control;
• Fans and blowers — quadratic torque loads where speed control gives the largest energy saving;
• Compressors — high duty hours and stable load, where IE4 efficiency pays back fastest;
• Conveyors and material handling — frequent starting with high breakaway torque;
• General industrial machinery — machine tools, mixers, processing and production lines.

Selection still depends on the driven equipment, duty cycle, ambient conditions and mounting arrangement rather than on the efficiency class alone; those factors are reviewed together with the motor rating before a model is recommended.

OEM Specifications and Order Support

For OEM machinery and replacement projects, the following information is confirmed before quotation so that the motor matches the equipment rather than only the nameplate:

• Rated power and expected operating load;
• Voltage and frequency, including the site supply conditions;
• Poles or rated speed, and whether speed control is required;
• Mounting arrangement (foot, flange or double shaft end) and shaft dimensions;
• Protection rating for the actual environment;
• Operating conditions — duty cycle, ambient temperature, altitude, dust, moisture or corrosive atmosphere;
• Quantity and destination market, for documentation and packing.

Buyers comparing suppliers can also read our guide to choosing an IE3 or IE4 motor manufacturer for the factory processes, testing and documentation that are normally reviewed before ordering.

Configurations outside the published table (voltage, frequency, shaft and mounting details) are reviewed against the application and confirmed in the order documentation; they are not presented as standard supply.

Frequently Asked Questions

1. What information is required to select a YE4 IE4 motor?

Required power and actual load, voltage and frequency, poles or rated speed, mounting arrangement, protection rating for the environment, duty cycle, ambient temperature and altitude, plus the quantity and destination. For replacement projects, the nameplate data or dimensional drawing of the existing motor shortens the review considerably.

2. Can a YE4 motor replace an existing IE3 motor?

In most cases yes, provided the frame size, mounting arrangement and shaft dimensions match, or an adapter is acceptable for the equipment. The efficiency class improves, but the replacement still has to match the driven load, starting conditions and electrical supply — so the existing nameplate and application are reviewed before a model is confirmed.

3. Which voltage and frequency configurations are available?

The published performance data is stated at 380 V, 50 Hz. 60 Hz operation and other voltages are handled as project configurations, and the corresponding ratings are confirmed before the order is placed rather than quoted from the standard table.

4. What testing documents can be provided for YE4 motors?

Motors are released with a routine test record, and type test data can be discussed where a project requires it. Please state the required test items and document format with the enquiry so that they can be confirmed for the specific model and quantity.

5. Can mounting arrangements and shaft dimensions be customized?

Foot, flange and double shaft end arrangements are selectable within the series. Non-standard shafts, flange dimensions or special mounting interfaces are reviewed as project configurations against the drawing, and confirmed before production.

Request a Quotation

Please provide the required motor power, voltage, frequency, pole count or rated speed, mounting arrangement, application and quantity. For replacement projects, please attach the existing motor nameplate or dimensional drawing.

Send your motor requirements to our engineering team — we will confirm the suitable YE4 IE4 model, the available configuration and the documents required for your project.

Installation and Overall Dimensions (H80–355)

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