MHYV cable, communication cable for mine use, mine cable, communication cable, mine cable for mine use, MHY32 cable, PUYV cable, MHYVP cable, MHYVR cable, flame retardant coal mine in communication cable, cable, mine monitoring cable, PUYVR cable, mine telephone lines, cable for mine monitoring, mine, mine telephone cable, execution: the enterprise standard Q/TX002-2006 is suitable for the coal mine with copper together flame retardant sheath fixed and class communication cable. MHYBV(PUYBV) coal mine with poly-insulated galvanized steel wire braided armor fire retardant poly-chloride sheath communication cable 5-50
煤矿用控制电缆允许的弯曲半径：对有铠装或铜带屏蔽结构的电缆应不小于电缆外径的12倍。
对有屏蔽层结构的软电缆，应不小于电缆外径的6倍。
对无铠装层的电缆应不小于电缆外径的6倍。
产品在全国几十个煤业集团及矿山上使用，获得了较高的评价和赞誉。
山东省：济南、青岛、聊城、德州、东营、淄博、潍坊、烟台、威海、日照、临沂、枣庄、济宁、泰安、莱芜、滨州、菏泽陕西省：西安、延安、铜川、渭南、咸阳、宝鸡、汉中、榆林、商洛、安康山西省：太原、大同、朔州、阳泉、长治、晋城、忻州、吕梁、晋中、临汾、运城。
2、可根据需要生产钢带铠装本安型号控制电缆，需在型号右下角加注代号“22”，如ia-K2YVV22表示钢带铠装。
3、需阻燃型加特征代号“ZR”如ZR-ia-K2YY等。
允许以不短于20米的短段交货，其数量不超过交货长度的10%；2、根据双方协议，可以任何长度的电缆交货。
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.
三相鼠笼式异步电动机是当前工矿企业中应用最广泛的电动机，其电机绕组的接线方法分星形接法Y和三角形接法Δ，下面介绍错误接线带来的后果。
定子绕组星形运行的电动机，其每相绕组承受的电压即相电压是电动机额定电压(电源线电压)的1/3倍(0.58倍)。
若错接成三角形运行，即相电压升高至厂家规定的1.73倍。
，电源电压380伏，星形运行，相电压为220伏，接成三角形，则相电压升高至380伏。
由于绕组的相电压升高，铁芯将高度饱和，铁芯磁通的励磁电流将急剧增加，再加上负载电流，定子绕组电流大大增加，将使绕组铜损急剧增大，最终导致定子绕组过热烧毁。
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
矿用信号电缆…PU•铜质线芯……省略•聚乙稀绝缘……Y•钢丝编织铠装……31•铜丝编织屏蔽…P•粗钢丝铠装……39•细钢丝铠装……39-1•蓝阻燃聚氯乙烯护套……V矿用防爆电缆（矿用信号电缆）PUYV,PUYVP,PUYVR,PUYV39,PUYV39-1矿用信号电缆命名代号：•矿用信号电缆…PU•。
耐火电缆和阻燃电缆分别符合耐火和阻燃性能要求。
特别适用于精密电子装置场所，如智能大厦、计算机中心和航空航天监控中心等。
最低环境温度：固定敷设不低于-60℃；聚氯乙烯护套电缆不低于-40℃。
2.电缆安装敷设温度应不低于0℃(氟塑料、硅橡胶、丁腈护套电缆不低于-25℃)。
煤矿用控制电缆允许的弯曲半径：对有铠装或铜带屏蔽结构的电缆应不小于电缆外径的12倍。
对有屏蔽层结构的软电缆，应不小于电缆外径的6倍。
对无铠装层的电缆应不小于电缆外径的6倍。
产品在全国几十个煤业集团及矿山上使用，获得了较高的评价和赞誉。
产品介绍-矿用信号电缆|MHYV矿用信号电缆|MHYVR矿用信号电缆|MHYVP矿用信号电缆|MHY32矿用信号电缆|MHYVRP矿用信号电缆MHYVR（PUYVR）（1×21×42×23×24×25×26×28×210×2?）聚乙烯绝缘聚氯乙烯护套矿用信号电缆，用于矿场作普通信号传输，可移动使用。
Integrated stranded railway signal cable implementation standard GB/ t2476-1993. Railway signal cables are suitable for transmission of railway control signals, audio signals or fixed cables for fixed installation in rated voltage ac 500V or dc 1000V or below. Product name, model, specification and scope: plastic insulation and PVC sheathed railway signal cable PTYAH; PTYA; PZYA; PTYV; PTYY,; PTY22; PTY23; (PZY02; PZY03; PZY23 PZY22) 1/0.8mm (1/1.0mm) 2-48 core is suitable for railway signal communication, fire alarm signal, telegraph and other automatic device systems with rated voltage ac 500V or dc 1000V or below. Polyethylene polythene insulation composite sheath steel tape armoured PVC sheathed railway signal cable PTYA23 PTYA22 PTY23 PTY22 PTYAH23 PZYA23 PZYA22 PZY23 PZY22 0.8 mm (1/1.0 mm) 4-61 core is fit for ac rated voltage 500 v or dc voltage 1000 v and below audio signal transmission and fixed installation of railway signal and group control automation assembly line, is of general automatic transmission railway signal, can also transmit frequency shift automatic block and business phone and other audio signal. 4, using features: cable in - 40 ℃ to + 50 ℃ environment use. Cable conductor long-term working temperature shall not exceed 70 ℃. Ordinary sheath of the cable laying under the environment temperature is not lower than 5 ℃, resistance to sheath for - 10 ℃. The bending radius shall not be less than 15 times of the outer diameter of the cable (when laying) and shall be applicable to any horizontal disturbance
一种工程技术设备，一般专（业）用性较强，也就是只涉及一定的领域，有限的空间。
于是可以通过人机界面，在这一小片天地里，仅用手指“指点江山”了。
当我们得意之余，忽然发现如果没有键盘的帮助，便不能“激扬文字”。
设备操作中，需要发挥这种灵感的机会不多，但仍然不可缺少。
于是聪明而老练的计算机工作者，便举起了以软带硬的“大旗”，在屏幕上立即画出一个我们正好需要的小键盘。
如果想要输入数字，屏幕上会弹出一个数字键盘；如果想要输入字符，屏幕上也会弹出一个字符键盘，仍然用手指“故伎重演”就是了。
Model, rated voltage, number of cores, nominal cross section and this number.
20年后，电路设计一般是：进户线6—10mm2，照明2.5mm2，插座4mm2，空调6mm2专线。
单芯电线1.5平方电线，用于灯具照明，单芯电线2.5平方电线，用于插座。
单芯电线4平方电线用于3匹空调以上，单芯电线6平方电线用于总进线，双色线用于接地线。
3. 绝缘厚度：3.3线芯绝缘厚度为0.5，绝缘后外径为3.5毫米。
0.85线芯绝缘厚度为0.7绝缘后外径为2.5毫米。
4. 成缆时把四根线芯排列为红，绿，蓝，白，排流线，排流线要和线芯一起绞合，千万不要纵放，成缆时不要加填充物，缆芯外用铝箔绕包，而后再绕包一层聚酯膜，在外有一层铜丝编织屏蔽（屏蔽铜丝不镀锡）。
Development of low-smoke halogen-free cable technology: market technology status and development trend of low-smoke halogen-free flame-retardant cable materials