Dense places; In places with high safety requirements for dense cables or closed channels, automatic fire detection and alarm devices suitable for reliable operation of the environment should be equipped. The oil supply system of open oil charging cable should be equipped with automatic fire alarm and lock device which can reflect the state of oil spraying. Places with high safety requirements, such as dense cable parts of underground public facilities, terminal setting of multi-return oil-filled cables and other places, can be equipped with special fire fighting facilities such as water spray extinguishing.

HYV, HSYV indoor large logarithmic communication cable is introduced: SPC switching station MDF and exchange between users of audio connection, also can be used for other audio connections between communication equipment, can support the low rate of data transmission, application support voice, digital telephone, fax, program-controlled switches, digital equipment connection, telecom integrated system and main branch line, inner conductor wire diameter (mm) : 0.40, 0.50, 0.60, 0.70, 0.80, 0.90, logarithmic (on) : 10-500
四、型号、名称型号名 称 PVV 聚氯乙烯绝缘聚氯乙烯护套信号电缆 PYV 聚乙烯绝缘聚氯乙烯护套信号电缆 PVV22 聚氯乙烯绝。
KVVP-22铜芯聚氯乙烯绝缘和护套编织屏蔽钢带铠装控制电缆。
KVVP2-22铜芯聚氯乙烯绝缘和护套钢带铠装控制电缆。
技术指标:聚氯乙烯控制电缆线芯允许长期工作最高温度70℃,交联聚乙烯控制电缆线芯允许长期工作最高温度为90℃。

Dense places; In places with high safety requirements for dense cables or closed channels, automatic fire detection and alarm devices suitable for reliable operation of the environment should be equipped. The oil supply system of open oil charging cable should be equipped with automatic fire alarm and lock device which can reflect the state of oil spraying. Places with high safety requirements, such as dense cable parts of underground public facilities, terminal setting of multi-return oil-filled cables and other places, can be equipped with special fire fighting facilities such as water spray extinguishing.
就是说,一直按着SB1,电机一直反转,不会再有限位开关将SQ1所在支路断开,限位不起作用了。
从电路图来看,反相后,限位开关起不到该有的作用,这很明显。
但很多非专业人士,或不求甚解的人,总是会被“限位”二字迷惑:以为“限位”就是能限制住设备的位置,装了“限位”就不可能逃出限制范围。
笔者就遇到过一件至今想来依怕的事。
工地整改,要将塔吊的供电配电箱换一下。
在拆掉旧配电箱上的线路时,当时也确实是记下了相位顺序,用脑子记的,后来就按照记忆,在新配电箱上按照相位顺序接了线路。
MHYBV(HUYBV)矿用聚乙烯绝缘、镀锌钢丝编织铠装、阻燃聚氯乙烯护套通信电缆。
MHYAV(HUYAV)矿用聚乙烯绝缘、铝/聚乙烯粘结护层、阻燃聚氯乙烯护套通信电缆。
MHYA32(HUYA32)矿用聚乙烯绝缘、铝/聚乙烯粘结护层、镀锌钢丝铠装、阻燃聚氯乙烯护套通信电缆。
三、型号、名称、用途型号名称主要使用范围MHYVP煤矿用聚乙烯绝缘编织屏蔽聚氯乙烯护套通信电缆用于电场干扰较大的场所作信号传输,适用于固定敷设四、产品主要技术指标项目单位指标0.40.751.01.520℃时导体直流电阻不大于Ω/km43.824.518.112.1电。
全蒴市话缆;HYA,HYAT,HYAC,HYA22,HYA23,HYAT23,HYA53,HYAT53,ZRC-HYA,ZRC-HYAT,WDZ-HYA,ZRC-HYA23MHYV,MHYAV,MHYA32,MHY32MHY32,MHYVR,MHYVP,MHYVRPMKVV、MKVV22、MKVV3。

公司声明,有问题的电缆绝不出厂严把质量关BBP-VVPBP-VVPP2BP-VVPPP2BP-VVP3BP-YJVPBP-YJPVPP-YJPVP2BP-YJVP2BP-YJP2VP2BP-YJP2VPBP-YJVP2PBP-YJVP3BP-YJP3VPBP-YJP3VP2ZR-BPYJVPZR-B。
VV42 VLV42 聚氯乙烯绝缘粗钢丝铠装聚氯乙烯护套电力电缆 敷设在竖井,水下等垂 直场合,能承受相当的 。
Ratedpower-frequencyvoltageU0/U:0.6/1kV.•电缆导体的最高允许长期工作温度(PVC/XLPE):70℃/90℃.siblecontinuousoperatingtemperatureofconductor(PVC/XLPE):70℃/90℃•短路时(最长持续时间。
可惜事故没有如果,只有冰冷的后果。
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冰冷的现实刺疼了我们这些电工从业者:47岁的老电工最终还是走上了一条不归路。
“老电工(死者)在未切断电源和未使用安全防护用品的情况下,冒险进行壁灯(光管)变压器的维修作业时而导致触电死亡。
”据调查报告显示,死者所在的企业“建立了安全生产责任制、安全教育培训制度、安全隐患排查治理制度、安全用电管理制度、安全事故报告制度等安全管理制度,制定了高空作业人员和施工现场用电安全技术交底文件、事故应急救援预案,发放了劳保用品,简单记录了安全生产教育培训情况。
本产品具有较强的抗电磁干扰、抗雷击及均匀电场,改善供电品质的特性。
特别适用具有精密电子装置的场所,如计算机中心、航空航天监控中心、智能大厦等。
本产品按GB9330《塑料绝缘控制电缆》、IEC60227《额定电压450/750V及以下聚氯乙烯绝缘电缆》以及IEC60502《额定电压1-30KV挤包绝缘电力电缆及附件》等标准制造。
阻燃电缆发展电线电缆行业是中国仅次于汽车行业的第二大行业,产品品种满足率和****占有率均超过90%。
在世界范围内,中国电线电缆总产值已超过美国,成为世界上第一大电线电缆生产国。
伴随着中国电线电缆行业高速发展,新增企业数量不断上升,行业整体技术水平得到大幅提高。

注:ZR-阻燃G-隔氧层NH-耐火阻燃电力电缆按GB1270《额定电压35kV及以下铜芯、铝芯塑料绝缘电力电缆》标准生产,还可根据用户需要按国际电工委员会推荐标准IEC、英国标准、德国标准及美国标准生产。
In order to improve the quality of the cable, we choose high electrical insulation materials production, such as special cable 1.8/3 kv frequency conversion motor, with 10 kv crosslinked insulating materials, special cable adopts frequency conversion motor of 6/10 kv, 35 kv crosslinking insulation materials, conductive shielding, insulation shield and insulation adopts the imported materials. In the process of production, we put special emphasis on the purification of raw materials, shielding closely with extruded insulation materials, control the uniformity of the insulation eccentricity and insulation outside diameter, which can reduce the interface effect, improve the electrical cable properties.