类型 轴流风扇 电机功率 0（w） 电压 220-240（V） 电流 0（A） 适用范围 110-380 风量 300CFM 风叶直径 200mm 转速 3000 1.SCOPE（范围）This specification to model NO:（产品机型）DFH1238B242.STANDARD ENVIRONMENTAL CONDITIONS（通用环境）Temperature 25℃and relative humidity 60％shall be standard if no doubtArises in the judgement,however,it is permitted that rests are conducted inThe environment of temperature 5-35℃,relative humidity 45-85％（推荐温度25℃，相对湿度60％下使用，但在温度5-35℃相对湿度45-85％的条件下，产品能正常工作）3.STRUCTURE AND FORM（产品结构）3-1Structure（结构）axial motor fan（轴流风机）3-2Housing（框架）BLACK PBT3-3Blade（扇叶）BLACK PBT3-4Bearing（轴承结构）BALL Bearing3-5Lead （线材）UL1007/24AWG/L=260MM4．RATED AND OPERATING CONDITLONS（额定条件）4-1Rated voltage（额定电压）(VDC)24.04-2Rated current（额定电流）(A)0.24A±10％4-3Startup voltage（启动电压）(VDC)12.04-4Rated input power（输入功率）(W)5.764-5Operating voltage（电压范围）(VDC)21.6-26.44-6Operating temperarure（工作温度）(℃)-10℃--+70℃4-7Storage temperature（收藏温度）(℃)-40℃--+80℃4-8Speed（转速）(RPM)2800±10％5.AIR FLOW-AIR PRESSURE CHARACTERISTIC（风量-风压特性）Applicable conditions:Shall be applied in the state when the standard, environmental conditions and voltage are fixed.（注意事项：不变化环境及工作电压）ITEM（测试项目）CONDITIONS（测试条件）STANDARD（测试标准）5-1Max.air flowAir pressure=0 109.49CFM5-2Max.air pressureAir flow=0 6.86mmH2O5-3Air flow.air Pressurecharacteristics AS performanceCurves 6.PERFORMANCE(性能指标)Applicable conditions:shall be applied under the standard environmental conditions and rated conditions（测试条件：标准环境条件及额定条件下）Item（测试项目）Conditions（测试条件）Standard（测试标准）6-1Noise噪音Shall be measure in aroundisolated room ofBackground noise 20DB orLess,in a distance of lm from intake direction 42.07dBa 6-2 Insulation Resistance绝缘阻抗When test voltage of DC250v is impressed betweenterrninal(+)and horsing Min 10 megohm6-3Dielectrice Withstand Voltage绝缘强度When voltage of AC 500v is Impressed between terminal(+)and housing Shall be free of Abnormality 7.SPECIAL TEST（专用试验） 7-1VibrationResistance振动试验 5-3hz,0.04