
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。
This is the flame retardant standard for bundles of cables. According to the test regulations, the 3.5m long cable samples are fixed with iron wire on the trapezoid test frame, and the number of samples is determined according to the different classification requirements of non-metallic materials. The sample is hung vertically on the back wall of the furnace, and air is introduced into the furnace through the inlet on the bottom plate.
适用于市内、近郊及局部地区架空或管道敷设线路中,也可直埋。
3、对绞:把二根不同颜色的绝缘单线按照不同的节距扭绞成对,以最大限度地减少串音,并采用规定的色谱组合以便识别线对。
4、缆芯:由苦干个基本单位或超单位绞合而成,每个单位都用规定色谱扎带绕扎,以便识别不同单位。
In addition, once the hydrogen halide gas reacts with the water in the air, it will generate "hydrogen halide acid", which will seriously corrode equipment and buildings and cause "secondary disasters".

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。
8h工作制是接触器的基本工作制,约定发热电流参数就是按8h工作制确定的;不间断工作制较8h工作制严酷得多,接触器的触头容易出现氧化而线圈容易出现过热。
在不间断工作制下,接触器需要降容使用;断续周期工作制的负载率则分别为标准值的15%、25%、40%和60%;短时工作制下触头的通电时间标准值分别为10min、30min、60min和90min等四种。
使用类别接触器有四种标准使用类别,分别是AC-AC-AC-3和AC-4。
Model specification of frequency conversion cable: series code BP frequency conversion cable; Insulation code YJ crosslinked polyethylene insulation; V polyvinyl chloride sheath; E halogen-free low smoke polyolefin sheath; Shielding code P copper wire braided shielding; P1 copper wire wound shielding; P2 copper band shielding; P3 aluminum strip shielding; TP2 concentric conductor + copper band shielding structure; P1-2 double shielding of copper wire winding + copper tape wrapping; PX12 copper band shielding + tin coated copper wire braided double shielding; Armor code 22 steel belt armor; 32 steel wire armouring; Flame retardant code ZR common flame retardant type; WDZ low smoke halogen-free flame retardant type.
本工艺规范的主要型号有:额定电压450/750V:ZA-RV;WDZA-RY等。
额定电压0.6/1kV:ZA-RVV、ZA-RVV22、WDZA-RYY、WDZA-RYY23、WDNA-RYY、WDNA-RYY23。
自承式电缆屏蔽:用轧纹或不轧纹金属带纵包子缆芯包带之外,两边搭接。
屏蔽带表面涂敷的塑料薄膜与护层粘接自承式电缆护套:黑色低密度聚乙烯。
自承式电缆吊线:吊线为7股镀锌钢绞线,标称外径为6.3mm和4.75mm两种,其抗张强度分别不小于3000kg和1800kg,吊线用热塑性涂料涂敷,以防钢丝锈蚀。
ZR-KVVP2阻燃聚氯乙烯绝缘,阻燃聚氯乙烯护套铜带绕包屏蔽控制电缆同上。
ZR-KVV22阻燃聚氯乙烯绝缘,阻燃聚氯乙烯护套内钢带铠装控制电线敷设在室内、电缆沟中、管道内及地下,能承受较大的机械外力使用。

铜芯聚乙稀绝缘聚氯乙稀护套铜丝编织屏蔽计算机电缆规格导体种类绝缘标称厚度mm编织单线直径mm外护套标称厚度mm电缆外径≤mm硬导体软导体1x2x0.7510.60.151.48.29.41x2x1.010.60.151.48.710.11x2x1.51。
1, code DJ - (series code) electronic computer shielded cable Y - (insulation code) high-pressure polyethylene F - (insulation code) fluoroplastic V - (sheath code) polyvinyl chloride (R - said many strands of soft wire core P - (block code) copper mesh shielding P1 tin plated copper mesh shielding P2 copper tape screened P3 aluminum-plastic composite membrane shielding for example 1:2, product specifications order 7 (14) to 1.0 was computer shielded cable can be represented as: (1) total shielding DJYVP7 * 2 * 1.0mm2 (2) partial shielding multiple soft lines DJYPVR7 * 2 * 1.0mm2 (3) total shielding DJYPVP7 * 2 * 2 * 1
从事电力生产的同行,或许对变压器充电操作已是得心应手,新投变压器、检修后的变压器、变电站全停电恢复等都涉及到变压器充电问题。
而不幸的是,变压器停电容易,充电或许就不那么顺利了。
因为充电时有一种潜在的威胁——励磁涌流,它看不到摸不着,却会引起误动。
电工同行们一定要仔细认真,忙归忙但别慌,否则“一不小心跳闸了”,就前功尽弃、白白忙活一场了。
据统计,在影响电网安全事件中,与继电保护有关的占很大一部分。
而作为重要的输变电设备,跳闸后对系统有一定影响,其保护误动作尤其是变压器充电时误动作事件更是屡屡发生。
Armoured cable including armoured thermocouple, armored thermal resistance, the armored heater and sheathed wire, mainly used in chemical industry, smelting, machinery manufacturing, power generation and scientific experiments, such as temperature crib, transmission and special heating, dosage is sheathed hot galvanic couple.
MVV聚氯乙烯绝缘聚氯乙烯护套矿用电力电缆用途:矿井中电能传输线路,但不能承受机械外力作用MVV22煤矿用聚氯乙烯绝缘钢带铠装聚氯乙烯护套电力电缆用途:矿井中电能传输线路,能承受一定机械外力MVV32煤矿用聚氯乙烯绝缘细钢丝铠装聚氯乙烯护套电力电缆用途:矿井中电能传输线路,能承受一定的拉力MVV42。