Eisc-ss flame-retardant and explosion-proof essential cable eisc-ss-r flame-retardant. The main technical indicators of this company are compiled by referring to the information of IEC227 (1979) and British BS5308Part1. Purpose: this product is mainly used for laying places of essential requirements with rated ac voltage of 450/750v or less, strong anti-rf and anti-near field coupling ability. It is also suitable for distribution and transmission of essential circuits in industrial sectors with gas operation. Conditions of use: 1)? The rated voltage is 450/750v. 2)?? Cable conductor long-term allowed working temperature is 70 ℃. 3)?? The cable temperature under installation should not below 0 ℃, allowed recommended no armoured cable bending radius should not less than 6 times of cable diameter. The armored cable shall not be less than 12 times the outer diameter of the cable.
4.屏蔽通信电缆工作电容：平均值52±2nF/km5.屏蔽通信电缆远端串音防卫度：150kHZ时指定组合的功率平均值大于69dB/km。
HYAT实心绝缘填充型电缆用途：实心绝缘填充型电缆适用于本地电信网的城市与乡镇电信线路，也适用于接入公用网的专用网线路。
主要产品型号HYA、HYAC、HYAT、HYAT53、HYA531、 HYA（管道/架空）内导体线径（mm）：0.40、0.50、0.60、0.70、0.80、0.90对数 （对）：5—30002、 HYAC（架空 ） 内导体线径（mm）：0.40、0.50、0.60、0.63、0.70、0.80、。
MHY32（PUYV39、PUYV39-1）矿用聚乙烯绝缘阻燃聚氯乙烯护套单层钢丝铠装井筒信号电缆用于斜井或竖井中作主信号电缆MHYVRP（PUYVRP）矿用聚乙烯绝缘阻燃聚氯乙烯护套铜丝编织屏蔽信号软电缆用于井下平巷或斜巷作信号电缆MHYVP（PUYVP）矿用聚乙烯绝缘阻燃聚氯乙烯护套铜丝编织屏蔽。
JYP2V－3铜芯聚乙烯绝缘聚氯乙烯护套铜/塑复合膜总屏蔽电子计算机电缆。
1、用途：本产品供交流额定电压500V或直流电压1000V及以下配电装置中电器，仪表接线之用。
2、产品使用特性：电缆导体的长期允许工作温度应不超过70℃。
三相交流电路中，它分为三相对称负载或三相不对称负载电路。
电功率计算时还要看电器负载是什么性质的负载，其中包括有纯电阻性负载，白炽灯、电炉、电热水器等，它们属于纯电阻性负载，这种电路中的电压与电流是同相位，电压与电流之间的关系，不论用瞬时值、最大值还是有效值表示，均符合欧姆定律，但一般计算都用有效值，即I=U/R。
纯电阻电路中，电阻性负载的功率因数基本上等于1，电阻元件的功率分为瞬时功率、平均功率或有功功率。
Railway cable product technology: in TB/ t2476-1993, railway cable servtb /T3100.1 ~.5-2004 "railway digital cable" Q/ jtl051.33-2001 integrated shielding cable.
1952年，瑞典在北部发电厂敷设了380千伏超高压电缆,实现了超高压电缆的应用。
到80年代已制成1100千伏、1200千伏的特高压电力电缆。
我厂引进先进设备，先进技术。
电力电缆的基本结构由线芯（导体）、绝缘层、屏蔽层和保护层四部分组成。
HYAC- cableway communication cable - detailed introduction of chromatographic combination for identification. Self-supporting cable core structure: taking 25 pairs as the basic unit, more than 25 pairs of cables are assembled according to the unit, and each unit is designated as the unit binding band of chromatogram in order to identify different units. 100 pairs or more of cables plus 1% of the reserve pair. Self-supporting cable core tape: wrapped with polyester film tape. Self - bearing cable shield: with or without corrugated metal strip longitudinal package cable core belt, both sides lap. The plastic film coated on the surface of the shielding belt and the bonding of the protective layer claim to be cable sheath: black low density polymer. Messenger messenger wire: suspension wire for 7 strands galvanized steel ridge, nominal diameter of 6.3 mm and 4.75 mm, its tensile strength is not less than 3000 kg and 1800 kg respectively, suspension wire with thermoplastic paint coating, to prevent corrosion of steel wire. Messenger cable identification and marking: cable exterior sex 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
（5）综合护套铁路信号电缆的理想屏蔽系数≤0.8；铝护套铁路信号电缆的理想屏蔽系数≤0.3PTYV：聚乙烯绝缘聚氯乙烯护套铁路信号电缆PTYY：聚乙烯绝缘聚乙烯护套铁路信号电缆PTY22：聚乙烯绝缘聚氯乙烯护套钢带铠装铁路信号电缆PTY23：聚乙烯绝缘聚乙烯护套钢带铠装铁路信号电缆PTYA22：聚乙。
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 requirements of the basic cable. 6. Cable length: mechanically protected cable is made according to the length of the corresponding basic cable
全塑市话电缆主要电气性能：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。
TN-C系统TN-C系统在TN-C接地系统中，地线和中性线是合二为一的。
PEN线就是我们熟知的零线。
设备的外壳与PEN线相连。
所谓的外壳接地线，其实就是保护接零。
当系统中出现了严重的三相不平衡，即IIb和Ic不相等，则有：Ia+Ib+Ic不等于0，PEN会出现较大的电流。
有人会问那这样三相不平衡，家中电器外壳与PEN线相连不就有电压了吗？在TN-C接地系统中，变压器中性点出口处直接接地，相当于把零线电压给强制性地保持在零电位。
NH-FF氟塑料绝缘和护套耐火控制电缆。
NH-VDVD低烟低卤阻燃聚氯乙烯绝缘和护套耐火控制电缆。
NH-YDYD低烟无卤阻燃聚烯烃绝缘和护套耐火控制电缆。
NH-KVV阻燃聚氯乙烯绝缘和护套耐火控制电缆。
Manufacturing technology of frequency converter cable: in the production of special cable for frequency conversion motor, the key operation of insulated wire core and cable forming process are required. The insulation core will directly influence the electrical energy of the cable.
四．产品只要性能指标，在20℃时应符合下表要求： 型号 规格导体组成 根数/单线直径mm导体直流电阻Ω/km固有衰减 dB/km绝缘电阻MΩ/KM工作电容uF/kmMHYV1X22X21X45X2 7/0.28 ≤45 1.10≥3000≤0.06MHYV10X220X230X250X2 。
塑铜线类型BV线又分为：ZR-BV和-BV：铜芯聚氯乙烯绝缘阻燃电线：绝缘料加有阻燃剂，离开明火不自燃。
NH-BV：铜芯聚氯乙烯绝缘耐火电线：正常着火情况下还可以正常使用。
BV线学名：铜芯聚氯乙烯绝缘电线四、耐高温控制电缆氟塑料绝缘耐高温控制电缆用途：氟塑料绝缘耐高温控制电缆适用于交流额定电压450／750V及以下控制、监控回路以及电器仪表的连接线和自动控制系统的传输线。