识别和长度标记HYAT23铠装通信电缆用途:铠装通信电缆机械保护层可以加到任何结构的电缆上,以增加电缆的机械强度,提高防侵蚀能力,是为易受机械破坏及易受侵蚀的地区而设计的电缆。
可以采用任何一种方式敷设,更适用于岩石地区的直埋敷设。
HYAT23铜芯实芯聚乙烯绝缘石油膏填充双面涂塑铝带屏蔽镀锌钢带铠装聚乙烯护套通信电缆。
HAVP扩音对讲电缆;扩音系统专用电缆HAVP2X32X0.15+2X48X0.2,火灾报警系统专用电缆HAVP2X32X0.15+2X48X0.2。
3、产品型号规格及范围:产品型号规格范围使用场合MKVV,MKVVP,MKVVP20.5-10mm2,2-61芯适用于弱电控制系统或强电磁场干扰区MKVV22,MKVV200.5-10mm2,4-61芯MKVV32,MKVV300.5-10mm2,7-61芯MKVVR0.5-6mm2,2-61芯MK。
XF5-273型旋卡式通信电缆交接箱|卡接式交接箱30对交接箱、50对交接箱、100对交接箱、150对交接箱、200对交接箱、300对交接箱、400对交接箱、500对交接箱 50对100对200对300对400对600对1200对2400对通信电缆交接箱HPVV5*。

Total shielding DJYVPDJYPVDJYPVP polyethylene insulation PVC sheathed electronic computer cable group polyethylene insulation shield PVC sheathed electronic computer cable polyethylene insulation group total shield PVC sheathed electronic computer cable 1, fixed for laying indoors, in cable trench or pipe 2, cable long-term working temperature: - 20 ℃ + 65 ℃, the cable laying temperature not lower than 0 ℃, the bending radius should not less than 10 times of cable diameter DJYVPR DJYPVR DJYPVRP polyethylene insulation total shield PVC sheathed computer with a soft cable group polyethylene insulation shield PVC sheathed computer with a soft cable polyethylene insulation group total shield PVC sheathed computer with a soft cable shows that: (1) flame retardant cable (oxygen index greater than 30) need to add code "out" in front of the model. For example, zr-djypv zr-djypvp et al. (2) armored (steel belt armored) cables need to add code "22" in the lower right corner of the model, such as: DJYPV22 djypvpppvp22, etc. This cable is mainly used for ac or dc 300V and below working system, it can work normally when 500V or below.
LED灯现在的应用非常广泛,因具有低耗能,高亮度,环保等优点,速度取代了白炽灯和灯管。
为什么有的LED灯关了以后还是会微亮呢?今天我们分析一下原因。
一,开关接的是N零线,当开关断开以后,灯具仍然连着火线,就会发出微弱的光亮。
单控开关的正确的接线解决方案:调整线路,让开关控制火线。
二,双控接线有很多种接法,有个别接法不合理,也可能引起关电以后灯具微亮。
上图也能正常控制LED灯,不合理。
解决方案:调整线路,改成正确的接线。
2.电缆(电线)敷设安装允许弯曲半径应不小于电缆(电线)外径的6倍。
KVV控制电缆用途: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。
产品使用特性:电缆导体的长期允许工作温度应不超过70℃。
最高传输频率分别为30MHz与100MHz。
本规范以YD/T标准为准。
HYA型市内通信电缆采用全色谱高密度聚乙稀绝缘,铝塑综合护套(即电缆的纵包屏蔽铝带与护套粘结成一体,形成密封护层),具有电气性能优越,施工方便的特点。
识别和长度标记:电缆外表面有**性识别标记,标记间隔不大于1m,标记内容有:导线直径,线对数量,电缆型号,制造厂厂名代号及制造年份,长度标记以间隔不大于1m标记在外表面上,但与上述标记错开。
其他结构:根据用户需要,可提供有加强机械保护层的铠装电缆HYAT53,HYAT55及高频隔离电缆YATG。
USES of RVVP shielding cable: this product is suitable for ac rated voltage 300/300v and below electrical, instrumentation, electronic e and automation e.

Product introduction - plastic insulated control cable | | KVV control cable KVVR control cable | | KVVP control cable shielding control cable KVVP | | KVVRP shielding control cable KVVP2 control cable | | KVVP2-22 control cable KVV22 sheathed control cable | control cable KVV | control cable KVVR | control cable KVVP | control cable KVVRP | control cable KVV22 product details: plastic insulated control cable: GB9330-88 scope of application: This product is fit for ac rated voltage up to and including 450/750 control, monitoring circuit and protection circuit using features: 1, the conductor long-term allowed working temperature is 70 ℃. 2, when laying environment temperature 0 ℃ or higher. 3. Minimum bending radius: 4. For unarmored cable, it shall be no less than 6 times the outer diameter of the cable. 5. The cable with armor or copper shield shall not be less than 12 times the outer diameter of the cable. 6. The soft cable with screen shielding structure shall not be less than 6 times the outer diameter of the cable.
RS485 cable product description: the characteristic impedance of 100 ohms, conductor is 2 * 2 * 24 awg multi-strand tin electrolytic copper wire twisted and become, insulating sheath like installation of design and color recognition, aluminum foil/polyester with total shielding, additional stranded tinned copper wire grounding conductor, industrial gray PVC outer sheath, 1 of the RS - 485 communication cable, the characteristic impedance of 120 ohms, conductor is 2 * 24 awg stranded tinned copper wire, PE insulation, covered with aluminum foil/polyester composite with + 90% tin plated copper wire this double shielding, comes with a grounding conductor is RS - 485 communication cable.
众所周知,电工作业的特殊时期往往存在较大的风险,而交叉作业即属于特殊作业的一种。
本文结合一起电工交叉作业引起的事故,和各位同仁分享电工交叉作业的风险分析和预控措施。
春节往往是检修作业、春检的高峰时期,各种作业重叠、交叉,存在极大的风险。
2016年4月,某水电站外包施工单位作业人员在大坝左岸效能区钢栈桥(俗称马道)用电焊机、氧焊机将原来施工期的临时木制悬梯改造为**钢制悬梯时,电焊作业过程中,产生的高温金属熔融物掉落到可燃的挤塑型聚苯乙烯保温板上,引燃保温板。
2YJVYJLVYJYYJLY交联聚乙烯绝缘聚氯乙烯/聚乙烯护套钢带铠装电力电缆敷设在室内、隧道及管道中,电缆不能承受机械外力作用。
YJV22YJLV22YJV23YJLV23交联聚乙烯绝缘聚氯乙烯/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,电缆能承受机械外力作用。
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ZR-KVVRP 聚氯乙烯绝缘和护套阻燃铜丝屏蔽控制软电缆。
KVVRP22 聚氯乙烯绝缘和护套编织屏蔽铠装控制软电缆。
ZR-KVVRP22 聚氯乙烯绝缘和护套编织屏蔽铠装阻燃控制软电缆。