产品描述本公司可向客户提供下述产品1.矿用阻燃通信电缆MHYVMHYAVMHY322.矿用阻燃信号电缆MHYV(PUYV)MHYVR(PUYVR)MHYVP(PUYNP)MHYVRP(PUYVRP)MHY32(PUYV32)线芯截面(分三种结构)0.75mm2分为:1/根0.977/根0.3742/。

五、代号名称和含义项目代号说明耐火特性NH耐火电缆A或B系列代号K控制电缆绝缘材料V聚氯乙烯、阻燃聚氯乙烯Y聚乙烯YD低烟无卤聚烯烃(YDJ低烟无卤交联聚烯烃)YJ交联聚乙烯F氟塑料分200℃和260℃护套材料V聚氯乙烯、阻燃聚氯乙烯F氟塑料分200℃和260。
铠装通信电缆主要电气性能:1.直流电阻:20℃,0.4≤148?/km0.5≤95.0?/km0.6≤65.8?/km0.8≤36.6?/km2.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,充气电缆大于10000MΩ.km,填充式电缆。
销售生产各类煤矿用阻燃通信电缆、矿用通讯电缆,矿用信号电缆,煤矿用阻燃信号电缆、矿用阻燃控制电缆,煤矿用阻燃通讯电缆、矿用电缆、矿用通信电缆、矿用信号电缆、矿用通讯电缆、矿用通信电缆,矿用控制电缆,矿用监控电缆、传感器电缆、信号电缆、本安防爆电缆、控制电缆、计算机电缆、阻燃电缆、耐火电缆,市内通信电。

它的含卤量约为含卤阻燃电缆的1/3左右。
发烟量也接近于公认的“低烟”水平。
根据《电线电缆燃烧试验方法》的规定,采用成束燃烧试验方法考核的阻燃电缆分为A、B、C3类,其中A类电缆试验条件最苛刻,性能较B、C类更优,价格也最贵。
plc网络是由几级子网复合而成,各级子网的通信过程是由通信协议决定的,而通信方式是通信协议最核心的内容。
通信方式包括存取控制方式和数据传送方式。
所谓存取控制(也称访问控制)方式是指如何获得共享通信介质使用权的问题,而数据传送方式是指一个站取得了通信介质使用权后如何传送数据的问题。
自由口通讯一般是指RS232的串行通讯方式,其通讯距离较短,速率较慢,一般在现场的某些仪表会采用这种方式,比较典型的是西门子的PC-PPI通讯;2.总线一般指RS485的串行通讯方式,其通讯距离和速率要远高于RS232通讯方式,一般现场的PLC或变频器等设备用此协议较多,比较典型的是西门子的Profibus-DP,Modicon的Modbus等;3.以太网采用的是国际通用的以太网通讯协议,具备相当高的速率,但其问题是设备成本较前两种方法要高很多,没有总线方式普及。
其它铠装通信电缆型号HYA22HYV22HYAT22HYY23HYYT23HYA23HYAT23。
钢丝铠装通信电缆HYA33HYAT33WDZ-HYA53HYY33HYYT33HYY33。
充油通信电缆HYATZRC-HYATWDZ-HYATHYYT。
Frequency converter cable symmetry design a: special cable for 1.8/3 kv and below frequency conversion motor, and symmetric 3 + 1 core and 4 core cable can only be used for the main power input cable, but it is best to use the symmetric structure of cable. Inverter and variable frequency motor and cable must adopt symmetrical cable structure, symmetrical cable structure with three core and 3 + 3 core two kinds, 3 + 3 core cable structure is a small four to three core insulation wire core in the fourth core (neutral) is decomposed into three smaller insulation wire core section, the three big three symmetrical string cable core cable, special cable for 6/10 kv frequency conversion motor, the cable structure and 6/10 kv power cable, ordinary ordinary power cable is three insulation wire core adopts copper tape screened after cabling.
钢带表面经涂塑处理,以防腐蚀和水份侵入。
23,22型采用双层钢带绕包也有相似的性能。
铠装通信电缆护套:黑色高分子量低密度聚乙烯或聚氯乙稀护套。
护套厚度可取决于基本电缆外径。
识别和长度标记:电缆外表有**性识别标记,标记间间隔不大于1m,铠装通信电缆标记内容有:导线直径、线对数量、电缆型号、长度、制造厂厂名代号及制造年份。
DJYJV(R)P2交联聚乙烯绝缘铜带绕包总屏聚氯乙烯护套计算机用屏蔽(软)电缆。
DJYJP2V(R)交联聚乙烯绝缘铜带绕包分屏聚氯乙烯护套计算机用屏蔽(软)电缆。
DJYJP2V(R)P2交联聚乙烯绝缘铜带绕包分屏总屏聚氯乙烯护套计算机用屏蔽(软)电缆。

视频信号传输线有同轴电缆(不平衡电缆)、平衡对称电缆(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。
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.
两相3.6°步进电机定子主极为4(在定转子间会产生不平衡电磁力,不鼓励使用此结构)时,依式Nr=m(nP±1/2),当P=2,m=2,n=6时,得Nr=25。
小图为两相,定子4主极,3.6°的步进电机结构,其外形为42mm步进电机,用于5寸48TPI的FDD(软盘驱动器)上。
当为三相时,由式Nr=m(nP±1/2),m=4,n=4,P=3,得Nr=50。
定子主极数为mP=12,步距角θs为1.2°。
JVVP22,JVVP2-22,JVVP3-22,DJYVP22,DJYJVP22,DJVVP22,DJYPV22,DJYJPV22,DJVPV22,DJVPVP22,DJYPVP22,DJYJPVP220.5-1.5mm25-64对(3线组)DJYVP3-22,DJVVP3-22,DJYJVP3-。

ˎ̥RVVRVVP电缆的规格RVV有以下规格:标称面积mm2根数/线径mm0.5.22.577/0.2RVV有:二芯三芯四芯五芯六芯七芯八芯RVVP有以下规格:标称面积mm2根数/线径mm0.7/0.080./0.100.08。
电缆名称—-计算机电缆 :电缆屏蔽—-铜丝编织屏蔽P—-铜带屏蔽P2—-铝塑复合带屏蔽P3电缆绝缘—-聚氯乙烯V—-聚乙烯Y—-交联聚乙烯YJ—-氟塑料F、F46电缆铠装—-钢带铠装22、23—-钢丝铠装32、33、42、43电缆导体—-单根导体A—-7根导体B—-多根导体R电缆阻燃—-普通阻燃ZR。
通俗地讲,电线万一失火,能够把燃烧限制在局部范围内,不产生蔓延,保住其他的各种设备,避免造成更大的损失。
阻燃电缆概述阻燃电缆的含义:在规定试验条件下,试样被燃烧,在撤去火源后,火焰在试样上的蔓延仅在限定范围内并且自行熄灭的特性,即具有阻止或延缓火焰发生或蔓延的能力。