Overview of the Simo YR Series (H355-1000) High Voltage Three-Phase Asynchronous Motor
Taking the YR3551-4 as an example: “YR” indicates a wound rotor asynchronous motor; “3551” denotes a frame size of 355mm center height with the first length of the core; and “4” represents the number of poles.
The Simo YR Series (H355-1000) high voltage three-phase asynchronous motor is a wound rotor asynchronous motor available in 6KV and 10KV variants. The protection level of this motor series is IP23, and the cooling methods include IC01, IC11, IC21, or IC31 (refer to GB/T1993). The motors with frame sizes from H355 to H630 are manufactured according to JB/T7594-94 and JB/T10445-2004 standards, while those with frame sizes from H710 to H1000 follow the GB/T13957-1992 standards.
Advantages of the Simo YR Series Motors
The Simo YR Series motors offer several advantages: high efficiency, energy savings, low noise, minimal vibration, lightweight design, reliable performance, and ease of installation and maintenance.
These motors can provide a high starting torque with a relatively low starting current and can be used in applications where speed regulation within a certain range is required. They are suitable for scenarios where the feeder line capacity is insufficient to start squirrel-cage motors, where extended or frequent starting is needed, or where small-range speed control is required. Typical applications include driving winches, rolling mills, and wire-drawing machines.
Motor Structure and Specifications
The YR Series motors adopt an F-class insulation structure. The bearing design follows IP54 standards, with grease lubrication used for H355-630 frame sizes and forced oil lubrication with sliding bearings for H710-1000 frame sizes.
The motor structure and installation type are IMB3, and the motor is rated for continuous operation under S1 duty. The rated frequency is 50Hz, and the rated voltage options include 6KV and 10KV. Other voltage levels or special requirements can be negotiated at the time of ordering.
Quality Assurance for Simo Motors
Simo Motor (Group) Co., Ltd. is a leading large enterprise in China specializing in the production of medium and large-sized, high and low-voltage, AC and DC motors. The company integrates motor design and manufacturing, electrical control, mechanical processing, mold making, casting, and transportation into a comprehensive power system provider. Simo Motor has consistently ranked among the top in the national motor industry for production and sales and has maintained rapid growth for seven consecutive years. In 2004, it was listed among the top 500 Chinese machinery companies, and in 2005, it ranked 58th in the Chinese electrical industry. The company was the first in the industry to obtain ISO9001-1994 quality system certification in 1995 and achieved ISO9001-2000 certification from the China Quality Certification Center (CQC) in August 2005. In May 2006, Simo Motor passed ISO14000 environmental management system and OHSAS18000 occupational health and safety management system certifications, as well as European “CE,” American “UL,” and China’s “CCC” certifications, earning AAA-level credit ratings for quality. Its leading products have won numerous honors, including “National, Provincial, and Municipal Famous Brand Products” and “China Light of the Nation Famous Brand Products.”
Simo Motors’ Commitment to Quality
To enhance the quality of all types of electromechanical products and strengthen pre-sales and after-sales service, Simo Motor strictly implements the “Quality Assurance Statement” of the Mechanical Industry’s Machine Tool Research and Design Institutes and thoroughly enforces all terms of this statement. The company adheres to the following quality commitments:
- Strictly adhere to relevant national standards and produce, inspect, and deliver products according to the standards and technical requirements specified in contracts. Products that do not meet quality standards will not be shipped.
- After final assembly and online testing, all products undergo a 72-hour operational test before inspection. Products must pass relevant standards for operation and reliability to improve product reliability and eliminate early failures.
- Under normal sales conditions, the company guarantees on-time delivery of the above-mentioned products. Functional components are guaranteed to be delivered within three months, with the possibility of earlier delivery under special circumstances. In case of delays, the “97 New Measures for Quality Improvement” will be implemented to compensate.
- If customers encounter quality issues during product use, Simo Motor guarantees a response within 24 hours of receiving notification. For on-site service requests, service will be initiated within 48 hours, and technicians will not leave until the issue is resolved.
- Products shipped from the factory will be accompanied by complete technical documentation. For any quality-related issues, the company offers a “three guarantees” service, including repair, replacement, and refund if the product does not meet factory standards after repair.
- Simo Motors provides lifetime maintenance at cost for all products sold.
Ordering Information for Simo YR Series (H355-1000) High Voltage Three-Phase Asynchronous Motors
When placing an order, customers must specify the following requirements:
- Motor model (e.g., YR3551-4)
- Installation type (e.g., IMB3)
- Rated power (e.g., 220kW)
- Protection level (e.g., IP23)
- Rated voltage (e.g., 6000V)
- Cooling method (e.g., IC01)
- Rated frequency (e.g., 50Hz)
- Insulation class (e.g., F-class)
- Synchronous speed (e.g., 1500r/min)
- Environmental conditions (e.g., altitude 1000m, ambient temperature 40°C)
For special requirements, such as double shaft extensions, reverse terminal box positions, reverse shaft rotation, tropical or outdoor anti-corrosion models, or others, these should be clearly stated in the contract and discussed with our factory in advance.
Before ordering, please refer to the product catalog to confirm the model specifications needed. Whenever possible, select standard products listed in the catalog. Be sure to specify the motor model, power, speed regulation, voltage, frequency, noise level, and installation type in the order contract. If no noise level is specified, products will be supplied at noise level 2.
