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Dowei Electric MV Motor TEFC

Dowei Electric MV Motor TEFC

Product catalog summary

General Description:
The MV Motor by Ningbo Dowei Electric Co., Ltd. adheres to international standards such as IEC 60034, IEC 60072, EN60034-1, NEMA MG1, and ISO 9001. It is designed for seismic conditions and complies with standards like ETGI-1.020 and IEEE Std 693. The motor is suitable for high-altitude applications up to 5000m and is typically used in industries such as Oil & Gas, Petrochemical, Mining, Metallurgy, and Nuclear power. Optional features include stator winding/bearing RTD, vibration probe, transmitter, neutral terminal box, and EXPO purging unit.

Typical Specification:
The MV/HV CACA Cooling TEFC Motor is rated for hazardous and safe areas with an output range of 185-20000kW and frame sizes from H315-630. It offers various speeds from 3000 to 300 RPM and features air-to-air cooling with an IP 55 enclosure. The motor supports voltages from 3kV to 13.8kV and dual frequency operation at 50/60Hz. It is certified for hazardous areas with IECEx/ATEX certification and has a service factor of 1.0. The enclosure is made of steel with epoxy anti-corrosion coating, and it operates in ambient temperatures from -40 to +60°C.

Bearing and Lubrication:
Sleeve bearings are used for H500 & above 2-pole and H630 4-pole motors, while anti-friction bearings are used for others. A pressure grease relief valve allows for re-lubrication without stopping the motor. Vibration standards comply with 60034-14.

Additional Features:
The motor is suitable for gas groups IIA/IIB/IIC in both Zone 1 & 2, with a temperature group T3 as standard. Grounding provisions are included both inside the terminal box and externally on the frame. The nameplate is made of stainless steel and includes efficiency and power factor data. Variable frequency options are available, with 0-60Hz for 2-pole 50Hz motors and 0-100Hz for 4-pole and above 50Hz motors.

Stator and Rotor:
The stator has a 20-year design life, using high-quality low-loss silicon electrical steel with a Class F insulation system and Class B temperature rise. The rotor is made of die-cast aluminum as standard, with a copper bar rotor as an option. It features a high-quality round steel shaft and a non-sparking fan for low vibration and noise.

Terminal Box and Coating:
The terminal box is oversized for easy cable connection and can be rotated 90 degrees. Each motor undergoes standard type/routine testing. The motor is coated with standard epoxy paint, with other options available upon request, and offers variable colors.

Catalog excerpts

Power Transmission & Distribution One stop equipments solution

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• Seismic design, ETGI-1.020, IEEE Std 693, NCh2369 • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1 • High altitude correction per IEC & IEEE & NEMA, ~ 5000m • Typical application for Oil & Gas, Petrochemical, Mining, Metallurgy, Nuclear power • Optional: Stator Winding/Bearing RTD, Vibration probe, Transmitter, Neutral terminal box, EXPO purging unit Typical Specification: MV/HV CACA Cooling TEFC Motor General Rating Output Frame size Speed Mechanical Protection Torque Design Server Factor Enclosure Mounting Anti-corrosion Ambient Temperature Sea Level Bearing and Lubrication Vibration...

Open the catalog to page 2

IIA/IIB/IIC, both Zone 1 & 2, Temperature group Grounding provisions inside terminal box plus external grounding provisions on frame Stainless steel engraved nameplate with nominal efficiency and power factor data included Variable Frequency(If required) 0-60Hz for 2pole 50Hz motors. 0-100Hz for 4pole and above 50Hz motors. 20 years design life. High quality low losses silicon electrical steel. Class F insulation system with Class B temperature rise, VPI treated. Class H insulation available on request; Temperature rise class B Die cast aluminum rotor as standard and cooper bar rotor as option,...

Open the catalog to page 3

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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