YR series high voltage three-phase asynchronous motors (Frame 355-1250) are the standard products in our factory with many years production experience, the configurations are more reasonable, the crafts are more advanced, with features of high efficiency, low noise and vibration, high reliability and convenience for mounting and maintaining.
The mounting dimensions, power grades, electrical performance of these motors all comply with the national standard GB755 Rotating electrical machines—rating and performance, national industry standard JB/T7594 and relevant IEC international standard. The motor suitable for the altitude does not exceed 1000m, ambient air temperature does not exceed 40°C and no serious dust, non corrosive and explosive gas environment. We can also produce motors suitable for the humid tropics and high altitude areas on the request of the order.
The rated frequency of the motor is 50Hz, the rated voltage is 6KV or 10KV. We can also supply 60Hz and other voltage motor based on the requirement of the order.
The basic design of the series motor is horizontal with mounting arrangement IMB3, the duty is S1 continuous.
The motor has a box structure. The frame is welded by steel plate which makes the motor has good rigidity, light weight. The easy disassembled protective top cover is installed on the top of the frame, which makes the series motors has the advantage of convenience for maintenance and repair.
The stators of our motors are mounted by outside press method. The stator windings are made of class F insulation materials. At each end there are reliable fastness and colligation. During processing, they are suffered many times of pulse voltage tests on windings interlayer and voltage endurance test to ground, and adopt German advanced vacuum pressure impregnation (VPI) solvent paint process, so the motor has excellent insulation, strong mechanical and perfect moisture protection.
The wound rotor is made of class F insulation materials.
The series motor adopts rolling bearing or sliding bearing, it depends on the power and speed of the motor. The normal protection degree of YR series motor is IP23, we can also supply YRQF series (IPW24), YRKS series (IP44 or IP54).
The main terminal box is located on the right of the motor (view from shaft extension end), it can also located on the left of the motor based on the order requirement. There is a separate ground terminal in the main terminal box.
These motors can be used to drive different general machines such as compressor, water pump, crusher, cutting machine, transportation equipment and other facilities, it is widely used in the mine, machine industry, petroleum and chemical industry, power plant, etc. If your ordered motors are used to drive blower, coal-grinder, rolling mill, windlass, please clarify the application and technique requests at the time of placing your order so that we can use special design to ensure the reliable operation of the motor.
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