耐火HAVP13X32X0.15+4X48X0.2电缆格昌都质里放心阻燃DJYVP22计算机线缆颓丧Specializing in the production for the telecommunications, computing facilities, instruments and meters connect with wire and cable series product -- -- -- -- -- - RVVP coal RVV series of products: coal mine product logo - logo - Ann Ann symbol certification - coal Ann query - AnBiao query on a coal production license MA for certification to provide coal mine product logo AnBiao certificate, MA certificate, Ann card flame retardant communication cable MHYV MHJYV MHYBV MHYA32 MHYYV MHYY32 flame retardant cable: MHYVR MHYBV MHYV32 MHYVR MHYVP MHYBV MHYVR32 coal mine fire retardant control cable: HYA22 zrc-hya zrc-hyat zrc-hyat23 HYA23 HYA53 HYAT HYAT23 HYAT53 HYAC HJVV HPVV HPVV22 PYV azv HYV22 PYV22 control cable: KVV KVVP kvvv22 kvp2 kvp2 kvp2-22 KVVR KVRP special cable HP KP H Your satisfaction - our unremitting pursuit!
软芯屏蔽控制电缆-KVVRP;ZR-KVVRP;ZRC-KVVRP;NH-KVVRP屏蔽双绞线RVSP屏蔽双绞电缆RVSP(屏蔽双绞线,屏蔽电缆,屏蔽双绞电缆本产品适用于交流额定电压450/750V及以下控制，监控回路及保护线路等场合。
Cable laying temperature lower than 0 ℃, bending radius: multi-core cable or 15 (D + D), a single cable 20 or more (D + D), (D for cable diameter, D) for the conductor diameter.
为了减少回路间的相互串扰和外部干扰，电缆采用屏蔽结构。
电缆的屏蔽要求是根据不同场合分别采用：对绞组合屏蔽、对绞组成电缆的总屏蔽、对绞组合屏蔽后总屏蔽等方法。
屏蔽材料有圆铜线，铜带、铝带/塑料复合带三种。
Purpose: this product is used for computer and automatic equipment connection cable, it has anti-interference, signal attenuation small performance. Common type, cold - resistant type, etc. 2. Product standards: three sql22 Q / 320831-320831. The main models: JVV - PVC insulated and sheathed computer cable JVPV - PVC insulated and sheathed cable shielding computer JVV - NH - PVC insulated and sheathed hardy computer cable JVPV - NH - PVC insulated and sheathed cable shielding hardy computer JFV - fluorine plastic insulation special composite plastic sheath heat-resistant computer cable JFVP - fluorine plastic insulation special composite plastic sheath cable shielding heat-resistant computer four. Section: 5. Logarithm: 1 ~ 61 pairs.
：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)。
Our factory was founded in 1971, is a production and sales of various kinds of flame retardant communication cable, shielded cable for mine, mine screen communication cable, mine telephone cable, shielding signal cable for mine, mine fire retardant signal cable, flame retardant signal cable, mining flame-retardant control cable, communication cable, mining cable, flame retardant mine communication cable, mine, mine communication cable, signal cable, mining control cable, cable for mine monitoring, sensors, cable, signal cable, control cable, computer cable, flame retardant cable, shielded cable. City communication cable, railway signal cable, power line, electrical equipment wire and cable, video line, system special cable. And other professional manufacturers. Companies with more than 300 employees, engineering and technical personnel more than 30 people, the factory covers an area of 20000 square meters, with fixed assets of 15 million yuan, the total number of companies have production and inspection equipment more than 120 units (pieces), annual output value of 150 million yuan.
天津西门子：总线电缆；ProfibusDP电缆.2芯紫色电缆铝箔、金属丝编织双层屏蔽，实心裸铜线导体，2芯并合成对，芯线红绿二色，绿色环保PVC外护套，外观紫色。
ProfibusDP电缆采用实心裸铜线导体作芯线，加厚铝箔和加密裸金属丝编织层，屏蔽效果好，紫色PVC外护套。
In order to evaluate the flame-retardant performance of wire cables, iec 60332-1, iec 60332-2 and iec 60332-3 were formulated respectively. Iec60332-1 and iec60332-2 are respectively used to evaluate the flame retardant capability of a single cable when it is laid on an incline and vertically (corresponding to GB12666.3 and GB12666.4 in China). Iec60332-3 (domestic equivalent to gb12666.5-90) is used to evaluate the flame retardant capability of beam cable when it is vertical, compared with that of beam cable when it is vertical.
例如：额定电压600/1000V交联聚乙烯绝缘聚稀烃护套阻燃B类低烟无卤电缆，3芯，240mm2，表示为WDZB-YJY600/1000V3*240Q/TEC16.额定电压600/1000V交联聚乙烯绝缘聚稀烃护套阻燃B类耐火低烟无卤电缆，3芯，240mm2，表示为WDZBN-YJY600/1000。
DJVP2VDJYP2VDJYJP2V铜带分对屏蔽DJVP3VDJYP3VDJYJP3V铝塑带分对屏蔽DJVVPDJYVPDJYJVP编织总屏蔽DJVVP2DJYVP2DJYJVP2铜带总屏蔽DJVVP3DJYVP3DJYJVP3铝塑带总屏蔽DJVPVPDJ。
HYAT22：铜芯实心聚烯烃绝缘填充式挡潮层聚乙烯护套钢带铠装聚氯乙烯护套市内通信电缆。
HYAT23：铜芯实心聚烯烃绝缘填充式挡潮层聚乙烯护套钢带铠装聚乙烯护套市内通信电缆。
HYA市内通信电缆(广泛使用于城域网通信网络建设中，以架空和管道安装为主，主要传输音频信号)。
两相电机时，齿槽转矩由四次谐波构成，设计时主要考虑消除四次谐波。
定子与转子齿距进行微小变化，使部分交链磁通减小，距角特性的峰值转矩减小。
目前，销售的两相步进电机，除特殊用于制动等方面，一般均采用微调节距或改变形状构造，减小齿槽转矩。
下图为两相步进电机的例子，齿槽转矩使距角特性产生畸变。
两相电机的齿槽转矩为距角特性周期的1/4，即变成四次谐波。
定子电流与**磁铁转子磁通的距角特性的理论值为虚线所示的正弦波，此曲线叠加上齿槽转矩产生的四次谐波，合成为粗线描述的畸变转矩曲线，距角特性畸变，则成为非正弦波，引起位置定位精度变差，振动和噪音变大。
在一定条件下，也可用于传输2048kbit/s以上的数字信号。
适用于矿山、电厂、市内、近郊及局部地区。
特别适用于500KV及以下的发电厂，变电站控制线路。
采用塑料绝缘特种屏蔽控制电缆可抑制外界电、磁场的干扰。
(2)短路时，(最长持续时间不超过5s)电缆导体的最高温度不超过160℃。
双绞屏蔽线RVSP2、产品介绍：RVSP系列在RVS的基础上再加上一层铜丝屏蔽网，常被用于那些对传输的信号要求很高的场合。
常被用于那些对传输的信号要求很高的场合。
视频信号传输线有同轴电缆(不平衡电缆)、平衡对称电缆(电话电缆)、光缆。
平衡对称电缆和光缆一般用于长距离传输，对于宾馆酒店等建筑一般采用同轴电缆传输视频基带信号的传输方式。
当采用75－5同轴电缆时，一般传输距离在300m时，应考虑使用电缆补偿器。
使用条件1：使用温度（℃):-40～+602:相对温度:40℃时达98%3:安装敷设温度不低如:-15℃4:充许最小弯曲半径:室内不小于5倍,室外10倍结构1:镀锡铜丝线芯2:聚氯乙烯绝缘/2芯对绞电缆3:薄膜绕包/镀锡铜丝编织网屏蔽4聚氯乙烯护套额定电压:300V/300V300V。