(2)在水平巷道或倾角45°以下的井巷内,应采用聚氯乙烯绝缘钢带或细钢丝铠装聚氯乙烯护套电力电缆、交联乙烯钢带或细钢丝铠装聚氯乙烯护套电力电缆。(3)在进风斜井、井底车场及其附近、中央变电所至采区变电所之间,可以采用铝芯电缆;其他地点必须采用铜芯电缆。

HJYV/SA成束阻燃型聚乙烯绝缘、聚氯乙烯护套、呼叫通信电缆。HJYVP/SA成束阻燃型聚乙烯绝缘、聚氯乙烯护套、编织总屏蔽呼叫通信电缆。HJYVP2/SA成束阻燃型聚乙烯绝缘、聚氯乙烯护套、铜塑复合带绕包总屏蔽呼叫通信电缆。
3、技术指标:聚氯乙烯绝缘电缆长期允许工作温度不超过70℃,电缆的敷设温度应不低于0℃,外径(D)小于25mm电缆的允许弯曲半径,应不小于电缆外径的4倍;外径(D)为25mm及以上的电缆的允许弯曲半径,应不小于电缆外径的6倍。
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。本产品是阻燃类产品。二、执行标准 MT818.《煤矿用阻燃通信电缆》及企业标准Q/JG。

b.周围环境温度:25℃c.土壤热阻系数:1.0K•m/Wd.直埋深度:0.7me.不同环境温度下载流量校正系数:环境温度(℃)1520253035校正系数1.111.051.000.940.88额定电压35KV及以下交联聚乙烯绝缘动力电缆①电缆导体的长期允许工作温度:≤90℃②。
了解接触器我们也要了解停止按钮,启动按钮,熔断器,还有接触器我们各自要了解清楚各自的原理,下面讲一下。停止按钮停止按钮接线要接常闭触点,什么叫常闭?你们可以这样理解,停止按钮如果我们不按它,停止按钮一直是通的,按下停止按钮断开,松开停止按钮还是通的,这样很好理解吧。启动按钮启动按钮我们接线要接常开触点,常开你也可以跟停止按钮一样理解,启动按钮我们不按一直是断开的,按动启动按钮,线路通,松开以后线路断开,启动按钮和停止按钮也就是一瞬间的断开和联通,这样理解吧。
钢丝铠装通信电缆HYA33HYAT33WDZ-HYA53HYY33HYYT33HYY33。充油通信电缆HYATZRC-HYATWDZ-HYATHYYT。全塑市话电缆执行标准:YD/T。全塑市话电缆结构特点: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。
BV line, BVR line, RVSP double stranded shielded cable, RVS double stranded cable, RVB parallel line, RV line RVSP Shielded twisted-pair cable RVSP (shielded twisted-pair cable, shielded cable, shielding twisted-pair electric (HYVP, RVVP) RVVP twisted-pair shielded cable < < shielded wire > > is shielded twisted-pair cable RVSP series on the basis of RVS coupled with a layer of copper wire shielding net, so the transmission loss, shielding the outside world better than RVS series, but because of the copper wire shielding network, its cost is also much higher than RVS series. Are often used to those who has a high requirement on the transmission. Technical indicators: polyvinyl chloride insulated cable long-term allowed working temperature over 70 ℃, the cable temperature under installation should not below 0 ℃, outer diameter (D) is less than 25 The allowable bending radius of mm cable shall not be less than 4 times the outer diameter of the cable. Diameter (D) of 25 mm and above of permissive bending radius of cable, not less than 6 times of cable diameter. The product description: this product is fit for ac rated voltage up to and including 450/750 power, electrical appliances, instruments, instrumentation, telecommunications equipment, lighting circuit and automatic device fixed installation, connection with a soft line, installed with a soft line and strong with shielded wire, according to the needs of use also can produce this kind of wire and cable fire retardant class (ZR), high flame retardant class (GZR), heat-resistant class (90 ℃, 105 ℃, 200 ℃, 250 ℃), low temperature resistant, nylon sheath, refractory (NH ), the company's main products: power cable control computer cable wire and cable wire and cable we specialized in wire and cable production and sales. Our products are high quality and low price, complete variety, there are all kinds of wire and cable, domestic orders can be delivery. We will with the high quality service to your satisfaction. If you have please telephone subscribers.
KFVRP22氟塑料绝缘聚氯乙烯护套钢带铠装屏蔽控制软电缆。KFFV22氟塑料绝缘和内护套聚氯乙烯外护套钢带铠装控制电缆。KFFRV22氟塑料绝缘和内护套聚氯乙烯外护套钢带铠装控制软电缆。KVVP铜芯聚氯乙烯绝缘聚氯乙烯护套编织屏蔽控制电缆。

注:ZR-阻燃G-隔氧层NH-耐火三、生产范围型号芯数标称截面(mm2)型号芯数标称截面(mm2)额定电压(KV)额定电压(KV)0.6/10.6/16/6(6/10)8.7/10(8.7/15)26/35(26/45)CUALCUALCUA。
如果由于现场的限制,必须要进行星型连接或者树形连接,可以使用深圳市富永通科技有限公司的485集线器和485中继器解决相关问题。5.485总线必须要接地。在很多技术文档中,都提到485总线必须要接地,但是没有详细的提出如何接地。
HJVV5x2x0.4 HPVV5x2x0.4HJVV5x2x0.5 HPVV5x2x0.5 HJVV10x2x0.4 HPVV10x2x0.4HJVV10x2x0.5 HPVV10x2x0.5 HJVV20x2x0.4 HPVV20x2x0.。
在MCU中都是以二进制的形式进行计算的.2.在编程时,我们通常用到的有十进制的数值形式和十六进制的数值形式,如52,0xfe;3.数值的大小由数据的类型来决定。常用的有“unsignedint”和“unsignedchar”."unsignedchar"的范围是"0-255",与单片机端口的8位的最大值(0xff)相对应。"unsignedint"的范围是"0-65535",与之对应的是"0xffff"。
形式导体标称直径mm。聚氯乙烯绝缘矿用电话执行标准:YD/T。产品用途:本产品适用于固定敷设在矿井、巷道等作通信干线及分线箱与电话机的连接线。HUVV铜芯聚氯乙烯绝缘聚氯乙烯扩套矿用电话电缆敷设在矿井中,一般场合对绞式聚乙烯绝缘聚氯乙烯护套市内通信电缆型号名称CPEV-S绞式聚乙烯绝缘聚氯乙烯护套市内通信电缆。
Cable conductor of long term working temperature should be allowed no more than 70 ℃, the cable in use should be to prevent high temperature radiation or; The environment temperature under installation should not below 0 ℃.

IA-DJVVP3R IA-DJYVP3R IA-DJYJVP3R 本安型、铝塑复合膜总屏蔽软结构 。IA-DJVPVPR IA-DJYPVPR IA-DJYJPVPR 本安型、编织分对屏蔽、总屏蔽(铜丝或镀锡丝)软结构。
符合IEC331规定符合GB12666.6规定燃烧时间750℃火焰温度950℃~1000℃火焰温度75℃~800℃火焰时间3h燃烧时间90min燃烧时间90min冷却时间12h附加电压额定电压附加电压额定电压附加电压 额定电压附加电流3A附加电流 3A附加电。