Product characteristics and USES: this product has high fireproof performance, through direct combustion flame, in a certain period of time is not short circuit and short circuit fault, therefore, when the fire broke out, is beneficial to reduce the loss, low smoke zero halogen type cable belong to environmental protection cable, especially suitable for fire to demand higher power, large buildings, railways, shipping industry, such as product/HHTZH009.2 refractory properties accord with GB12666.6 (IEC331) 1-90 re ?? Ac rated voltage: U0/U 0.6/1 kv 2. ?? The highest working temperature for a long time: flame retardant PVC insulated and sheathed 70 ℃ and 105 ℃?? Fluorine plastic insulation and sheath 200 ℃ and 260 ℃ with cross-linked polyethylene insulation 90 ℃ 90 ℃ low smoke zero halogen flame retardant polyolefin low smoke zero halogen flame retardant crosslinked polyolefin 90 ℃ and 120 ℃. ?? Minimum ambient temperature: flame retardant PVC sheathed: fixed installation to 40 ℃, the fixed installation - 15 ℃ fluorine plastic insulation and sheath: fixed installation - 60 ℃; The fixed installation - 20 ℃ 4. Refractory characteristics: comply with IEC331 flame temperature 750 ℃, flame
The products are manufactured according to The standard of GB12706 and GB12666 or IEC,BS,DIN,ICEA,and JIS upon request.
In order to improve the of the cable, we choose high electrical insulation materials production, such as special cable 1.8/3 kv frequency conversion motor, with 10 kv crosslinked insulating materials, special cable adopts frequency conversion motor of 6/10 kv, 35 kv crosslinking insulation materials, conductive shielding, insulation shield and insulation adopts the imported materials. In the process of production, we put special emphasis on the purification of raw materials, shielding closely with extruded insulation materials, control the uniformity of the insulation eccentricity and insulation outside diameter, which can reduce the interface effect, improve the electrical cable properties.
ZR-KVV铜芯聚氯乙烯绝缘和护套（阻燃）控制电缆。
ZR-KVVR铜芯聚氯乙烯绝缘和护套（阻燃）控制软电缆。
ZR-KVVP铜芯聚氯乙烯绝缘和护套铜丝屏蔽（阻燃）控制电缆。
ZR-KVVRP铜芯绝缘和护套铜丝屏蔽（阻燃）控制软电缆。
ZR-HYA23：铜芯实心聚烯烃绝缘挡潮层聚乙烯护套钢带铠装阻燃聚乙烯护套市内通信电缆。
ZR-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阻燃聚氯乙烯护套市内通信电缆。
ZR-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阻燃聚乙烯护套市内通信电缆。
则:Vt=V0+（V1-V0）×[1-e(-t/RC)]或t=RC×Ln[(V1-V0)/(V1-Vt)]，电压为E的电池通过R向初值为0的电容C充电,V0=0，V1=E，故充到t时刻电容上的电压为：Vt=E×[1-e(-t/RC)]再如，初始电压为E的电容C通过R放电,V0=E，V1=0，故放到t时刻电容上的电压为：Vt=E×e(-t/RC)又如，初值为1/3Vcc的电容C通过R充电，充电终值为Vcc，问充到2/3Vcc需要的时间是多少？V0=Vcc/3，V1=Vcc,Vt=2*Vcc/3，故t=RC×Ln[(1-1/3)/(1-2/3)]=RC×Ln2=0.693RC注：Ln()是e为底的对数函数提供一个恒流充放电的常用公式：⊿Vc=I*⊿t/C.再提供一个电容充电的常用公式：Vc=E(1-e(-t/R*C))。
ZR-KVVP2铜芯绝缘和护套铜带屏蔽（阻燃）控制电缆。
ZR-KVVRP2-22铜芯绝缘和护套铜带屏蔽钢带铠装（阻燃）控制电缆。
电缆使用环境温度-40℃~+50℃，电缆敷设温度≥-10℃，在25℃时的温度≤95%，电缆敷设时弯曲半径：MHYV31、MHYVR型电缆≥10倍电缆外径其余型号电缆≥15倍电缆外径。
Armoured communication cable armoring cable type: HYA53, HYAT53, HYA23 HYAT23, HYV22, HYA22 (rat, buried) armoring communication cable USES: armoured communication cable mechanical protective layer can be appended to the structure of the cable, with the mechanical strength of the cable, antierosion capability, is vulnerable to mechanical and designed and vulnerable to erosion area telephone cable. Any kind of laying can be adopted, which is more suitable for direct buried laying in rock area. Armored communication cable structure: 1. Basic cable: any filled and unfilled cable with single sheath or double sheath structure. 2. Armored communication cable mechanical protection layer: type 53 adopts 0.15mm thick corrugated steel belt, which is longitudinal wrapped on the basic cable and overlapped on both sides. The surface of the steel belt is coated with plastic to prevent corrosion and water intrusion. The type 23,22 has similar performance with double steel band wrapping. 3. Armored communication cable sheath: black high-molecular weight low-density polyurethane or polyurethane sheath. Sheath thickness may depend on the basic cable outer diameter. 5. The marking contents of armored communication cables include: wire diameter, number of wire pairs, cable model, length, manufacturer name and year of manufacture. 6. Armored communication cable electrical characteristics: the cable meets all the electrical re of the basic cable. 6. Cable length: mechanically protected cable is made according to the length of the corresponding basic cable
控制电缆KYJV;KYJR;KYJVP;KYJVRP1、执行标准：gb参照采用iec227耐电压优于iec227）2、使用特性：＊额定电压：uo/u：450/750v＊工作温度：一般型最高不超过70℃；交联聚乙烯最高不超过90℃＊最低环境温度：固定敷设-40℃；非固定敷设-15℃。
其他结构：根据使用场合、用户要求，可提供各种形式的电缆，以满足各种敷设环境条件的要求。
综合布线、安防工程、监控工程、弱电系统工程、银行监控、网络工程、音响工程、远程三表抄送、消防工程、楼宇防盗监控、门禁可视对讲等专用、音、视频电线电缆。
矿用通信电缆|MHYV矿用通信电缆|MHYA32矿用铠装通信电缆|MHYAV矿用通信电缆|MHYBV矿用通信电缆|矿用通讯电缆|矿用屏蔽通信电缆MHYVP|矿用屏蔽通信电缆MHYVRP|矿用通信电缆MHYV22矿用通信电缆执行标准:MT818.简要说明：命名代号：•煤矿用通信电缆……MH（HU）•铜。
技术特点1.电缆额定工作电压1000v.；2.导体结构采用多层复绞形式，电缆弯曲性能高；3.绝缘护套材料经改性后，具有高阻燃性，氧指数超过32；4.电缆的长期工作温度可达105℃,从而可使电缆载流量比普通电缆提高1.3倍；5.电缆符合IEC332-3《电缆成束燃烧试验》标准规定的A级水平。
并通过采样电阻将电流信息转化为电压信息，由变频器的主控芯片中的AD变换模块转化为数字信号。
再经过数字滤波和定标处理，为电流环调节提供电流反馈信息。
检测电路的硬件原理图如下所示：JCE电流传感器将电流信息转化为电压信息，还要将LEM检测回来的信号转化为适合控制芯片的电压范围，将电压信号变换为对称的正负电压，提供相应的偏移，转化到适合控制芯片的电压范围。
JCE对c三相电流均采样，经检测模块后存放在相应的寄存器中供主控系统采用。
This is the General Pure Cable in UL for the UL1581. The experiment required several samples to be laid on a vertical 8 foot high bracket and 20 minutes with the specified 20KW ribbon spray lamp (70,000 BTU/Hr). for flame not to spread to the upper end of the cable and self-extinguishing. UL1581 is similar to iec 60332-3c except that the number of cable roots is different. There is no smoke concentration specification for commercial grade cables, which is generally only used for horizontal running of the same floor, but not for vertical wiring of the floor.
4、型号、名称和使用范围型号名称使用范围铜芯铝芯VVVLV聚氯乙烯绝缘聚氯乙烯护套电力电缆敷设在室内、管道内、隧道内VYVLY聚氯乙烯绝缘聚乙烯护套电力电缆敷设在室内、管道内、管道中VV22VLV22聚氯乙烯绝缘钢带铠装聚氯乙烯护套电力电缆敷设在地下，能承受机械外力作用V。
KVV22铜芯聚氯乙烯绝缘聚氯乙烯护套钢带铠装kvv22电缆450/7504-370.75-10敷设在室内，电缆沟、管道直埋等能承受较大机械外力的固定场合。
KVVP阻燃铜芯聚氯乙烯绝缘聚氯乙烯护套kvvp电缆450/7504-370.75-10敷设在室内，电缆沟、管道等要求屏蔽的固定场合。
The armouring control cable is made of various material conductors in metal sleeves with insulating materials and is fabricated into a flexible solid assembly.