成型导体（扇形、瓦形或半圆形）应当紧压。控制电缆应经受3000V，5min不击穿。根据双方协议，允许任何长度交货。十、包装标志及运输1、电缆应妥善包装在电缆盘上交货，电缆伸出的长度应不小于300mm,端头上应用电缆封套可靠密封。
ZR-BPGVFP2硅橡胶绝缘丁腈护套铜带绕包屏蔽耐高温变频电力电缆。ZR-BPGVFPP2硅橡胶绝缘丁腈护套铜丝编织铜带绕包屏蔽耐高温变频电力电缆。ZR-BPGVFP3硅橡胶绝缘丁腈护套铝聚酯复合膜绕包屏蔽耐高温变频电力电缆。
MHY32（PUYV39、PUYV39-1）矿用聚乙烯绝缘阻燃聚氯乙烯护套单层钢丝铠装井筒信号电缆用于斜井或竖井中作主信号电缆MHYVRP（PUYVRP）矿用聚乙烯绝缘阻燃聚氯乙烯护套铜丝编织屏蔽信号软电缆用于井下平巷或斜巷作信号电缆MHYVP（PUYVP）矿用聚乙烯绝缘阻燃聚氯乙烯护套铜丝编织屏蔽。
Soft core shielding control cable -KVVRP; ZR - KVVRP; ZRC - KVVRP; NH - KVVRP shielded twisted-pair RVSP RVSP shielded twisted-pair cable (shielded twisted-pair cable, shielded cable, shielding twisted-pair cable this product is fit for ac rated voltage up to and including 450/750 control, monitoring circuit and protection circuit, etc. Products use features: 1. The cable conductor long-term allowed working temperature is 70 ℃; 2. The cable temperature under installation should not below 0 ℃, allowed bending radius; The cable without armor layer should not be less than 6 times the outer diameter of the cable. The cable with armored layer or copper band shielding structure shall be no less than 12 times of the outer diameter of the cable, and the soft cable with shielded structure shall be no less than 6 times of the outer diameter of the cable. Instructions for ordering: 1. Product name, model, case number, quantity and rated voltage shall be indicated when ordering; 2. Delivery length and time; 3. Other special requirements
Flame retardant signal cable for coal mine: MHYVR MHYBV MHYV32 MHYVR MHYVP MHYBV MHYVR32
中断控制系统MCS-51单片机的中断功能较强，以满足不同控制应用的需要。51系列有5个中断源(52系列有6个中断源)，即外中断2个，定时中断2个，串行中断1个，全部中断分为**和低级共二个优先级别，优先级别的设置我们也将在后面进行详细的讲解。定时与控制部件MCS-51单片机内部有一个高增益的反相放大器，基输入端为XTAL1输出端为XTAL2。MCS-51芯片的内部有时钟电路，但石英晶体和微调电容需外接。
2结构和材料的区别耐火电缆的结构和材料与阻燃电缆也不相同。阻燃电缆的基本结构是：(1)绝缘层采用阻燃材料(2)护套及外护层采用阻燃材料；(3)包带和填充采用阻燃材料。而耐火电缆通常是在导体与绝缘层之间再加1个耐火层，所以从理论上讲可以在阻燃电缆的结构中加上耐火层，就形成了既阻燃又耐火的电缆，但实际并没有这个必要。
AVVR型300/300V铜芯聚氯乙烯绝缘聚氯乙烯护套安装用软电缆。KVVP2聚氯乙烯绝缘，聚氯乙烯护套铜带绕包屏蔽控制电缆同上。KVV22聚氯乙烯绝缘，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。
DJYP3V 聚乙烯绝缘铝塑复合带分屏蔽聚氯乙烯护套电子计算机用电缆。DJYVP3 聚乙烯绝缘铝塑复合带总屏蔽聚氯乙烯护套电子计算机用电缆。DJYP3VP3 聚乙烯绝缘铝塑复合带分屏蔽、总屏蔽聚氯乙烯护套电子计算机用电缆。
MKVV450/750V煤矿用聚氯乙烯绝缘聚氯乙烯护套控制电缆450/750V矿用控制电缆：|井筒信号电缆|MKVV22；MKVV32；MKVVR矿用控制电缆|煤矿用控制电缆|矿用阻燃控制电缆矿用控制电缆型号：MKVV；MKVV22；MKVV32；MKVVR；MKVVP矿用控制电缆电压：450/75。
综合护套铁路信号电缆的理想屏蔽系数≤0.8；铝护套铁路信号电缆的理想屏蔽系数≤0.3铁路信号电缆PTYA23用途：适用于额定电压交流500V或直流1000V及以下传输铁路控制信号PTYAHPTYAPZYAPTYVPTY22PTY23(PZY02PZY03PZY23PZY22)或直流1000V及以下的。
计算机电缆产品简介：本产品适用于额定电压500V及以下对于防干扰性要求较高的电子计算机和自动化连接用电缆。电缆地线芯绝缘采用具有抗氧化性能的K型B类低密度聚乙烯。聚乙烯的绝缘电阻高，耐电压好，介电系数小和介质损耗温度和变频率的影响也小，不但能满足传输性能的要求，而且能确保电缆的使用寿命。
在测量电流时，应特别注意必须把电路断开，将表笔串联在电路中。在测量2500v交流或直流高压电压时，要注意人身安全，测试表笔应该分别插入“2500v”及“一”插孔中。测量电阻时必须将被测电路与电源切断，当电路中有电容存在时必须先将电容进行放电，以免损坏表头。电阻测量时，量程应该选择合适。在测量低电阻时要注意接触电阻，在测量高电阻时（大于10kΩ），应该注意不可以加入并联电路（不应将人手接触表笔的金属部分或电阻器的引线部分）。
Product introduction - mine control cable MKVV mine control cable MKVVR mine control cable shielding control cable MKVV32 MKVVP mining mine control cable MKVVRP mine shielding control cable for mine control cable MKVV22 mine flame-retardant control cable for mine monitoring control cable for mine cable type MKVV, MKVV22, MKVV32, MKVVR, MKVVP, MKVVRP 1, mine control cable standards and specifications: MT818-1999-2, flame-retardant control cable for mine purposes: This product is suitable for the control and monitoring circuit with rated ac voltage u0/u of 450/750v or below and the connecting line of the protection circuit and the electrical instrument in the distribution device. 3. Model specifications and scope of mine control cable products: Model specifications of the control cable for mining use: MKVV,MKVVP, mkvvvvvvvvvvp2-10mm2,2-61 cores are applicable to the weak current control system or mkvvvv22 of the strong electromagnetic field interference area. MKVV20 0.5-10mm2,4-61 core mkvvv32, mkvvvvv30 0.5-10mm2,7-61 core MKVVR 0.5-6mm2,2-61 core MKVRP 0.5-4mm2,2-61 core mkvvvvvvp22, mkvp2-221.5-10mm2, 4-22 core mkvp2, 1.5-10mm2 Is mainly used for 500 kv substation and power distribution device and strong electromagnetic interference zone MKVV - 1, MKVV22 0.5 was 10-1, 4, 2-61 core features: coal mine with control cable conductor long-term allowed working temperature is 70 ℃, the cable temperature under installation should not below 0 ℃. Permissible bending radius of control cables used in coal mines: for cables with armored or copper band shielding structures, the bending radius should not be less than 12 times of the outer diameter of the cables. For soft cable with shield layer structure, it should be no less than 6 times the outer diameter of the cable. The cable without armor layer should not be less than 6 times the outer diameter of the cable.
ZR-BPGGPP2硅橡胶绝缘和护套铜丝编织铜带绕包屏蔽耐高温变频电力电缆。ZR-BPGGP3硅橡胶绝缘和护套铝聚酯复合膜绕包屏蔽耐高温变频电力电缆。ZR-BPGVFP硅橡胶绝缘丁腈护套铜丝编织屏蔽耐高温变频电力电缆。
使用特性(1)电缆长期允许工作温度：-30℃～+60℃。(2)电缆的安装敷设温度不低于-5℃.(3)电缆弯曲半径：无铠装电缆最小弯曲半径应不小于电线外径的10倍。铠装电缆最小弯曲半径应不小于电缆外管的15倍。
Frequency conversion cables are mainly used for the connection between the frequency conversion power supply and the frequency conversion motor, as well as the transmission and distribution lines with rated voltage of 1KV and below, for the transmission and distribution of electricity.