This process specification provides for rated voltage 450/750v, single core 1.5-500mm2 PVC insulated or polyolefin insulated flame-retardant fire resistant soft cable; And 0.6/1kv single core 4~500mm2, 2~5 cores 1.5~240mm2 polychlorinated insulated or polyolefin insulated flame-retardant fire resistant flexible cables process specifications, technical requirements, and acceptance rules. The main models of this process specification are: rated voltage 450/750v: za-rv; WDZA - RY, etc. Rated voltage 0.6/1kv: za-rvv, za-rvv22, wdza-ryy, wdza-ryy23, wdna-ryy, wdna-ryy23. 2? Usage characteristics, classification and nomenclature of cables 2.1? Service characteristics 2.1.1 cable rated operating voltage: 450/750v, 600/1000v. 2.1.3 temperature under installation should not below 0 ℃. 2.1.4 small bending radius of cables: unarmored cables: the flame retardant type is 6 times the outer diameter of cables, and the fire resistant type is 12 times the outer diameter of cables; The armored cable is 20 times the outer diameter of the cable. 2.2? The cable type consists of 5 parts: serial code, insulation, sheath material code, outer sheath and performance code.
JYP2V－1JYP2V－2JYP2V－3多对屏蔽控制电缆电子计算机(包括DCS系统)用多对屏蔽控制电缆执行标准：企业标准(等效采用英国BS5308—86)用途：适用于发电、冶金、石化等上矿企业集散系统、电子计算机系统、自动化系统的信号传输及检测仪器、仪表等连接用多对屏蔽电缆。
以此类推25对色标排列：白兰、白橙、白绿、白棕、白灰、红兰、红橙、红绿、红棕、红灰、黑兰、黑橙、黑绿、黑棕、黑灰、黄兰、黄橙、黄绿、黄棕、黄灰、紫兰、紫橙、紫绿、紫棕、紫灰全塑市话电缆缆芯采用全色谱线对。
HYAT：铜芯实心聚烯烃绝缘填充式挡潮层聚乙烯护套市内通信电缆。HYAC：铜芯实心聚烯烃绝缘自承式挡潮层聚乙烯护套市内通信电缆。HYA53：铜芯实心聚烯烃绝缘挡潮层聚乙烯护套钢塑带铠装聚乙烯护套市内通信电缆。
Spin cassette XF5-273 communication cable transfer box, adopting advanced technology at home and abroad, in accordance with the international advanced standard production in the eighty s of cable wiring equipment, for the city, the town of telecommunication network backbone cable and wiring cable transfer. Features: 1. The connection jumper adopts rotary clamp-type connection and is sealed with silica gel on the metal clip, because it is not only reliable and durable, but also easy to operate and repair without stripping. 2. The wiring terminals in the handover box shall be arranged in 25 pairs as a basic unit, consistent with the basic units of the local telephone cables and marked with Numbers on the terminals to facilitate construction and maintenance. 3. The structure, arrangement and installation dimensions of the wiring modules are exactly the same as those of 3M products and can be used for each other. 4. The box body is treated by electrostatic spraying, beautiful and generous, with clear lines, good anti-corrosion and waterproof performance and long service life. Main technical parameters: the environment temperature: - 40 ℃ ~ + 65 ℃ atmospheric pressure: 70 ~ 106 kpa relative humidity: 95% or less is random ends and insulation resistance between terminals and ground > 5 x 104 Μ Ω. When connecting any two ends and any terminals and grounding to 1000V ac, there shall be no breakdown or flying arc in 1min. Contact resistance between wire and terminal < 5 x lO - 3 Ω.
共需要4个大功率回路。照明回路数量一般以建筑面积180㎡为界——未超过180㎡的，使用1个回路；超过180㎡的，使用2个回路；之后每180㎡，增加一个回路。最后加一个主开关。这样一来，我们配电箱里的开关数量就已经确定了。继续以上面那个三室两厅的户型为例：共需要1个主开关+1个照明回路+4个大功率回路+6个插座回路=12个开关。确定开关极数家用开关的极数只有三种：1P，1P+N和2P。2P开关最安全，但是太宽了，配电箱里装不下。
绝缘线对：把二根不同颜色的绝缘线按不同的节距扭绞成对，并采用规定的色谱组合以便识别线对。缆芯结构：以25对为基本单位，超过25对的电缆按单位组合，每个单位用规定色谱的单位扎带绕扎，以便识别不同的单位。100对及以上线对的电缆加有1％的预备线对，但最多不超过6对。
二、电缆的型号、名称和用途序号型号名称使用范围1VVVLVVYVLY聚氯乙烯绝缘聚氯乙烯/聚乙烯护套电力电缆敷设在室内、隧道及管道中，电缆不能承受机械外力作用VV22VLV22VV23VLV23聚氯乙烯绝缘聚氯乙烯/聚乙烯护套钢带铠装电力电缆敷设在室内、隧道内直埋土壤，电缆能承受机。
产品型号：TRVVSP中度柔性双护套双绞屏蔽拖链电缆电缆结构：导体：超细精绞无氧铜丝符合VDE0295CLASS6标准绝缘：特殊混合PVC柔性绝缘线芯：两两绞合短节距成对,成对结构后分层集束,防扭结结构设计护层：(可选)无纺布总屏蔽：无氧铜丝编织屏蔽(70%以上密度)护套：丁腈柔性护套颜色：黑色(R。
生产的品种有通信电缆与信号电缆两种，型号为MHYV。 通信电缆规格为1～80对，从井筒干线电缆到工作面用1～2对的电缆都齐全。 信号电缆为1～19对，可用于任何监控系统。 电缆具有阻燃、抗静电的性能，特别适合高瓦斯矿井使用。
NH-VV：铜芯聚氯乙烯绝缘聚氯乙烯护套耐火电力电缆NH-VV22：铜芯聚氯乙烯绝缘聚氯乙烯护套钢带铠装电缆火力电缆NH-KVV：铜芯聚氯乙烯绝缘聚氯乙烯护套耐火控制电缆NH-KVV22：铜芯聚氯乙烯绝缘聚氯乙烯护套钢带铠装耐火电力电缆NH-BVV：铜芯聚氯乙烯绝缘聚耐火电缆（电线）NH-BVV22。
HYAT23 armoured 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 vulnerable to erosion area and design of 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.
就拿我们这个加气块厂的电气控制来说，这是个中型的dcs系统，PLC与PLC之间用的是交换机来进行数据转换，这就牵扯到IP地址的设定问题，以及怎样确定上位机和PLC之间通讯是否正常，所以计算机知识你也要具备，最少我会用ping命令去查看是否正常。自己感觉这个步子迈的有点大。作为一个5年工龄的维护电工，在这行也没少见东西，但是真真正正的去学习自动控制还是啥也不知道，那段时间自己恶补了好多计算机知识，用U盘装系统，安装西门子200的软件，卸载再安装反复的折腾。
（3）低卤低烟阻燃PVC绝缘和护套：70℃；无卤低烟阻燃绝缘和护套：90℃和125℃两种。3.最低环境温度：（1）阻燃聚氯乙烯绝缘和护套：固定敷设-40℃；非固定敷设-15℃；（2）氟塑料绝缘和护套：固定敷设-60℃；非固定敷设-20℃；4.电缆安全敷设温度不应低于0℃。
Crane or forklift should be used for the loading and unloading of cables. It is forbidden to run flat or lay flat. For installation of large cables, cable laying cart should be used to avoid external damage or abrasion caused by manual dragging. If the cable cannot be laid in time for some reason, it should be stored in a dry place to prevent sunlight from exploding and water entering the end of the cable. Note: the installation of wire and cable should be familiar with the performance of wire and cable installation personnel or full-time technical personnel, if there are still unclear matters, ball related technical department or technical department of our factory.
The armouring control cable is fabricated into a flexible assembly by different material conductors in metal sleeves with insulating materials.
Low smoke zero halogen flame retardant cable insulation using crosslinked poly (do not contain halogen, sheath used do not contain halogen polyethylene thin hydrocarbon material, so the set of all materials do not contain halogen, chung cable cable released when small amounts of smoke, it won't produce a strong acid mist, functioning, toxicity is small.