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YVF3-355~450系列低压大功率变频调速三相异步电动机

YVF3-355~450 Series Variable Frequency Medium Size Three Phase Asynchronous Motor

概述	Summary
机座号：H355~H450	Frame Size: H355~H450
额定功率：250~900kW	Rated Power: 250~900kW
极数：4~8极	Poles: 4p,6p,8p
防护等级：IP54	Protection Degree: IP54
绝缘等级：F	Insulation Class: F
额定电压：380V、660V	Rated Voltage: 380V、660V
变频范围：恒转矩：25~50Hz	Frequency range: constant torque: 25~50Hz
恒功率：4p：50~75Hz	constant power: 4p: 50~75Hz
6~8p：50~100Hz	6~8p: 50~100Hz
外形及安装尺寸同Y3低压大功率电机	Mounting dimensions are same as Y3 big power series
因独立风机电机的长度增加ΔL	Motor length increase by ΔL because of cool fan

结构特点 Structural characteristics

　　YVF3 系列电动机采用高强度铸铁结构，具有可靠性高、调速范围宽、精度高等特点，装有独立的冷却风机，保证电机在不同转速下均有良好的冷却效果。
The Y2VF series motors with high strengh cast iron structure, have the characteristics of high reliability, wide speed range, high precision. The Y2VP series motors have independent cooling fan to ensure good cooling effect under different speed.

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