ZRCHYAT铜芯实心阻燃聚烯烃绝缘填充式挡潮层聚乙烯护套双层纵包轧纹钢带铠装聚乙烯套市内通信电缆市内通信电缆用途：主要用于传输音频、150kHZ及以下的模拟信号和2048kbit/s及以下的数字信号。
三、产品结构:四、低烟无卤电缆产品表示方法1、低烟无卤电缆的型号由燃烧特性代号和电缆型号两部分组成燃烧特性代号名称代号阻燃A级ZA阻燃B级ZB阻燃C级ZC阻燃D级ZD耐火N无卤低烟WD用途代号名称代号电力省略控制K布线B材料代号名称代号铜导体省略交联聚乙烯绝缘YJ聚稀。
5． 电缆允许弯曲半径：非铠装电缆最小为电缆外径的6倍铜带屏蔽或钢带铠装电缆最小为电缆外径的12倍四：基本型号及名称1．聚乙烯绝缘聚氯乙烯护套本质安全电路甬计算机屏蔽电缆(包括本安用DCS电缆)IA-DJYPVP聚乙烯绝缘铜丝编织分屏总屏聚氯乙烯护套本安用计算机屏蔽(软)电缆IA-DJYP2VP2。
4．电缆安装敷设温度应不低于0℃5．耐火特性：符合IEC60331规定符合GB/T规定火焰温度750℃火焰温度750℃燃烧时间3h燃烧时间90min冷却时间12h附加电压额定电压附加电压额定电压附加电流2A附加电流3A6．敷设推荐的允许弯曲半径：非铠装、联锁或编织铠装电缆应不小于电缆外径的6倍铜带屏。
使用特性•工频额定电压U0/U:0.6/1kV。
单芯电缆不允许敷设在磁性管道中。
本产品适用于各种火灾危险较大，消防安全重要性较高场所的电气装备及控制系统作连接线。
一、产品特点及用途耐高温防火控制电缆具有较高的耐火性能，经受火焰直接燃烧下，在一定的时间内不发生短路和断路故障，在火灾发生时，有利于减少损失。
三相电源中流过每相负载的电流为相电流，用IAIBICA表示。
对于星型接法的电动机，相电流等于线电流，对于三角形接法的电动机，线电流等于根号3相电流在星形联接的负载中，流过端线的线电流等于流过负载的相电流，流过中线的中线电流等于各相电流的矢量和。
在三角形联接的负载中，相电压等于线电压（各相负载两端的电压仍称为相电压）。
一般总是三相负载对称的才接成三角形接法，此时三个线电流对称，三个相电流也对称，线电流等于相电流的“根号3”倍。
Rated voltage U0 / U for 450/750 v, conductor wire core long-term working temperature is 70 ℃, 95 ℃, the cable laying temperature below 0 ℃.
4、型号名称及使用范围序号型号产品名称主要使用范围1kvv铜芯聚氯乙烯绝缘聚氯乙烯护套控制电缆适用于弱电控制系统或强电磁场干扰区2kvvp铜芯聚氯乙烯绝缘聚氯乙烯护套铜丝编织屏蔽控制电缆3kvvp2铜芯聚氯乙烯绝缘聚氯乙烯护套铜带屏蔽控制电缆4kvv22铜芯聚氯乙烯绝缘聚氯乙烯护套钢带铠装控制电缆5。
HJYVP3/SA成束阻燃型聚乙烯绝缘、聚氯乙烯护套、铝塑复合带绕包总屏蔽呼叫通信电缆。
HJYJV/SA成束阻燃型交联聚乙烯绝缘、聚氯乙烯护套、呼叫通信电缆。
HJYJVp/SA成束阻燃型交联聚乙烯绝缘、聚氯乙烯护套、编织总屏蔽呼叫通信电缆。
1. Computer cable execution: refer to British BS5308 and JCS189. 2, computer control cable USES: this product is suitable for rated voltage up to and including 450/750 straight or 1000 v and below the power generation, metallurgy, petrochemical and other industrial and mining enterprises, distribution, electronic computer, automatic transmission and testing instruments and meters, etc. 3, computer cable type and scope of use: use JVV product model specifications, JVVR, JYV, JYVR, JYJV, JYJVR, JVPVJVVP, JYVP, JYJVP, JVVPR, JYVPR, JYJVPR, JVVP2, JVVP2R, JVVP3, 0.12 1.5 Mmm2 JVVP3R 1-100 for quad (3) for general industrial computer, low voltage transmission line e, etc. DJVPV, DJVVP DJYVP, DJYJVP DJYPV, DJYJPV, DJVPVP, DJYPVP, DJYJPVP, DJVP3V, DJVVP3, DJYVP3, DJYJVP3, DJYP3V, DJYJP3V, DJVP3VP3, DJYP3VP3, DJYJP3VP3, DJYJVP3, DJYP3V, DJYJP3V, DJVP2V, DJVVP2, DJYVP2, DJYJVP2, DJYP2V, DJYJP2V, D JVP2VP2 DJYP2VP2, DJYJP2VP2 note: this column model with "R" dropping out for structure of soft cable. 0.5-1.5mm2 1-84 pairs (3 lines) are used in electronic control devices, automation, digital inspection, computer circuits and other general industrial computer detection devices. Jvp22, jvp2-22, jvp2-22, jvp3-22, DJYVP22, DJYVP22, DJVVP22, djvvpvp22, djypvv22, djyjpvvvvvvvv22, DJVPVP22, DJVPVP22, djypvpvpvp22, DJYJPVP22 0.5-1.5mm2 5-64 pairs (3 line groups) djyvp3-22, djvp3-22, DJYJVP3-22, DJVP3V22 DJYP3V22 DJYJP3V22, DJYP3VP3-22, DJVP3VP3-22 djyjp3vp3-22, DJVVP2-22, DJYVP2-22, DJYJVP2-22, DJYP2V22, DJYJP2V22DJVP2V22, DJVP2VP2-22, DJYP2VP2-22, DJYJP2VP2-22
Our company guarantees that the products can operate reliably and safely under the correct installation, normal operation and maintenance.
Coaxial cable with hard copper wire as the core, outsourcing a layer of insulation materials. The insulating material is surrounded by tightly woven network conductors and covered with a protective material. There are two widely used coaxial cables. One is the 50 ohm cable, which is used for digital transmission. The other is the 75 ohm cable, used for analog transmission, or broadband coaxial cable. This distinction is made for historical reasons, not for technical reasons or manufacturers.
以变压器接线方式Y/△11为例，讲解星转角（Y△）问题：1.1为了便于理解本文假设：变压器高低压侧额定电流均为1A；变压器平衡系数为1；从相量图我们可以看到两侧电流之间会出现30的相位差，那怎么干掉这30°的相位差呢？当然是要通过保护装置的软件算法对相位进行校正。
微机型保护装置有2种相位校正方式：三角形侧向星形侧校正（△Y）和星形侧向三角形侧校正（Y△）。
版权所有。
我国广泛采用的是星形侧向三角形侧校正（Y△）方式，本文也只讲解星形侧向三角形侧校正（Y△）这种方式。
型号及名称：序号型号名称1KFF氟塑料绝缘和护套控制电缆2KFFP氟塑料绝缘和护套屏蔽控制电缆3KFFR氟塑料绝缘和护套控制软电缆4KFFRP氟塑料绝缘和护套屏蔽控制软电缆5KFV氟塑料绝缘聚氯乙烯护套控制电缆6KFVP氟塑料绝缘聚氯乙烯护套屏蔽控制电缆7KFVR氟塑料绝缘聚氯乙烯护套控制软电缆8K。
Computer cable sheath: one, the scope of application: this product is fit for ac rated voltage up to and including 300/500 v or 1000 v dc electronic computer network and automation control system of signal transmission, high anti-jamming performance re of the detection device and instrument connections. Second, implement standard SPTL/ three, use features: 1. The cable conductor of long term working temperature should be allowed no more than 70 ℃, in the process of using cable should prevent high temperature radiation or contact; Ambient temperature under installation should not below 0 ℃. 2. Allowable bending radius of cable laying and installation: non-armoured layer cables shall be no less than 6 times the outer diameter of the cable; The armoured or shielded cable shall not be less than 12 times the outer diameter of the cable. The soft cable of shield layer structure should not be less than 6 times the outer diameter of the cable.