合江ZR-KVV5X2.5阻燃控制电缆价格呆滞
Solid insulated filled cables are suitable for urban and township
telecommunication lines of local telecommunication networks and for
special network lines connected to public networks. Mainly used for
pipeline laying. The inner and outer surfaces of the cable core and
the shield layer are filled with oil paste and poured to prevent
water intrusion. The mechanical and electrical properties of the
cable remain unchanged under conditions of 30~C - 60~C.
。。。。。。其线对的绝缘色谱及序号分别是以白、红、黑、黄、紫(a线)五种颜色作为领示色,蓝、桔、绿、棕、灰(b线)五种颜色作为循环色循环而成。缆心结构是将25个全色谱线对先绞合成10或25对基本单位,再将若干个基本单位(或子单位)绞合成50对或100对的超单位,然后由若干个超单位总绞合成缆心,构成大对数电缆。
ZR-YJV22ZR-YJLV22ZR-YJV23ZR-YJLV23交联聚乙烯绝缘阻燃聚氯乙烯/聚乙烯护套钢带铠装动力电缆敷设在室内、隧道内直埋土壤,电缆能承受机械外力作用。使用特征:●工频额定电压Uo/U为3.6/6KV-26/35KV。
型号及名称:序号 型号 名称1 KFF 氟塑料绝缘和护套控制电缆2 KFFP 氟塑料绝缘和护套屏蔽控制电缆3 KFFR
氟塑料绝缘和护套控制软电缆4 KFFRP 氟塑料绝缘和护套屏蔽控制软电缆5 KFV 氟塑料绝缘聚氯乙烯护套控制电缆6 KFVP
氟塑料绝缘聚氯乙烯护套屏蔽控制电缆7 KFVR 氟塑。
④在空气中敷设 a.单芯电缆平行敷设时的中心距离:185mm2及以下电缆直径的2倍:240mm2及以上为90mm
b.周围环境温度:30℃
c.不同环境温度下载流量的校正系数:环境温度(℃)202530354045校正系数1.121.061.000.94。
PLC从传统的继电器回路发展而来,Zui初的PLC甚至没有模拟量的处理能力,PLC从开始就强调的是逻辑运算能力。从系统的可扩展性和兼容性的方面来说:市场上控制类产品繁多,无论DCS还是PLC,均有很多厂商在生产和销售。对于PLC系统来说,一般没有或很少有扩展的需求,因为PLC系统一般针对于设备来使用。一般来讲,PLC也很少有兼容性的要求,比如两个或以上的系统要求资源共享,对PLC来讲也是很困难的事。
5、生产范围型号额定电压(V)导体标称截面(mm2)0.50.751.01.52.54610芯数ZR-KVVZR-KVVP450/750-2-612-142-10ZR-KVVP2-4-614-144-10ZR-KVV22-7-614-614-1。
敷设时电缆的温度应不低于0℃,敷设时弯曲半径应不小于电缆外径的10倍。有铠装层或铜带屏蔽结构的电缆,应不小于电缆外径的12倍。适用于交流额定电压U0/U=0.6/1KV供电回路中。电缆导体的Zui高工作温度为70℃短路时:电缆导体Zui高温度不超过160℃(持续时间不大于5S)电缆允许弯曲半径不小于15D注:D为电缆外径mm。
煤矿用阻燃通信电缆一、执行标准:MT818.14—1999和《煤矿用阻燃通信电缆检验细则》二、产品命名代号煤矿用阻燃通信电缆…………………………………MH聚乙烯绝缘……………………………………………Y铜质线芯………………………………………………省落铝—聚乙烯粘结护层…………………………………A聚乙烯。
产品型号、规格:型号标称截面(mm)芯数额定电压(V)执行标准:ZR-BV0.5-1851450/750及以下Q/X*ZR-BVR2.5-701450/750及以下ZR-RV0.5-951450/750及以下ZR-VV1.5-1851-5600/1000ZR-。
2.绝缘电气强度:导体之间1min1kv不击穿导体与屏蔽1min3kv不击穿3.绝缘电阻:每根芯线与其余线芯接地,控制电缆大于10000MΩ.km,HYAT电缆大于3000MΩ.km。4.工作电容:平均值52±2nF/km5.远端串音防卫度:150kHZ时指定组合的功率平均值大于69dB/km。
(4)为降低电缆接头在火灾事故中的故障机率,在安装中应尽量减少接头数量,以保证线路在火灾中能正常工作。如果需要做分支接线,应对接头做好防火处理。RVV全称聚氯乙烯绝缘聚氯乙烯护套软电缆。RVV电缆字母所代表含义字母R代表软线字母V代表绝缘体聚氯乙烯(PVC)RVV电线是弱电系统Zui常用的线缆,其芯线根数不定,两根或以上,外面有PVC护套,芯线之间的排列没有特别要求。
:9600bps,指每秒传送9600位,包含字符的数位和其它必须的数位,如起始位、停止位和奇偶校验位等。在自动化领域我们常用RTU模式,RTU模式中每个字节的格式:编码系统:8位二进制,十六进制0-9,A-F数据位:1起始位8位数据,低位先送奇/偶校验时1位;无奇偶校验时0位带校验时1位停止位;无校验时2位停止位错误校验区:循环冗余校验(CRC)从站地址设置:信息地址包括2个字符(ASCII)或8位(RTU),有效的从机设备地址范围0-247(十进制)。
Purpose of HYAT solid insulated filled cable: solid insulated
filled cable is suitable for the urban telecommunication line of
the local telecommunication network in the town of wuyu, and also
for the special network line connecting to the public network.
Mainly used for pipeline laying. The inner and outer surfaces of
the cable core and the shield layer are filled with oil paste and
poured to prevent water intrusion. The mechanical and electrical
properties of the cable remain unchanged under conditions of 30~C -
60~C. Structure: wire: annealed bare copper wire, copper wire
diameter 0. 32, 0. 40, 0. 50, 0. 60, 0. 70, 0. 80, 0. 90 (mm).
Insulating material: high density polypropylene or polypropylene,
colour of the insulated wire as indicated by full chromatograph.
Pair of insulated wires: twist two different colored insulated
wires into pairs at different pitch and use the specified
chromatographic combination to identify pairs. Core structure: with
25 pairs as the basic unit, more than 25 pairs of cables are
assembled according to the unit, each unit is wired with the unit
of specified chromatogram to identify different units. 100 pairs of
cables with more than one pair of cables plus 1% of the reserve
pair, but not more than 6 pairs. The gap in the core is filled with
oil paste. Core tape: wrap with a polygrease film tape. Shielding:
metal strip with or without striping, which is longitudinal wrapped
outside the core of the cable. Sheath: black low density polymer.
Double sheathed cables can also be provided. Identification and
marking: cable outer surface sexual identification mark, mark at no
more than alternate 1 m intervals, tag contents are: the diameter
of wire, line number, cable type, factory name and year of
manufacture, marking at no more than alternate 1 m intervals to
mark on the surface, but with the tag stagger. Other structures:
according to the needs of users, we can provide armored cables
HYAT53, HYAT55 and high frequency isolation cables YATG with
strengthened mechanical protection layer.
普通网线UTP、STP,严格来说也是不能满足RS485协议的传输要求。撇开网线的机械强度、耐环境性能不说,只说电性能,一般网线的特性阻抗通常为100欧姆,而RS485要求的匹配阻抗必须在120欧姆以上(个别的如ProfiBus则达到150欧姆)。
相关产品:阻燃通信电缆 , 矿用同轴电缆 , 组合电缆 , 矿用通信电缆 , 特种矿用电缆
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