JFB-503J 三相恒功率并联电热带生产厂家
| 产品结构与工作原理Product Structure and Working Principle三根平行的绝缘铜线为电源母线，在内护套绝缘层外缠绕电热丝，并将该电热丝每隔一定距离分别依次与三根电源母线循环连接，在每二相间形成连续并联电阻。当母线通以三相电后，各并联电阻同时发热，因而形成一条连续的加热带。Three parallel insulation copper wires form power generatrix. Electric heating threads are wound around the inner jacket insulation layer ln every certain distance, the heating thread is welded in turn to the three power generatrix circularly. This makes every 2 phases into acontinuous parallel connection resistance. When the generatrix is connected to 3 -phase power supply, the every parallel resistance heats at the same time This makes a continuous heating belt. |
| (2)产品规格和主要技术特性Product Types and Main Technical Characteristics表 2-2： JFB-口/3型电热带主要技术参数表Table 2-2: Main Technical Parameters of JFB- 口 /3 Type Electric heat cable型号Type额定电压Rated Voltage(v)额定功率RatedPower(w/m)绝缘电阻Insulation Resistance(MΩ /hm)电气强度Electricity Intensity(v/min)绝缘层材料Insulation Material产品高耐温Highest Temp-erature(℃)防爆标志Explo-sionProof Label小弯曲半径Min.BendingRadius(mm)介质高维持温度HighestMaintenance Temperature of Media(℃)单电源大使用长度Max.UseLengthof SinglePower(m)加强型ReinforcedJFB-30/3J38030≥502750F46200ExeIIT4普通型Common30加强型Reinforced35120320JFB-40/3J40100240JFB-50/3J5080190JFB-60/3J6060160(3)产品特点及应用场合Product Characteristics and Applications三相电热带除有单相电热带相同特点外，还有以下优点：Besides the above characteristics the three phase heating cables have following advantages:①率的三相电热带的大允许使用长度是单相电热带的三倍。The most tolerable length of the three-phase heat cable is three times longer than the length of the single-phase heating cable of the same wattage.②三相带截面大，传热导面积大，能提高传输效率。Bigger section area of three phase heating cable can broaden heat transmitting area and thisincreases the transmitting efficiency.三相并联带一般适用于大管径，管网系统管线和罐体的伴热保温。 |
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