电缆中间接头制作方法图解
电缆终端头是将电缆与其他电气设备连接的部件，电缆中间头是将两根电缆连接起来的部件，电缆终端头与中间头统称为电缆附件。
电缆附件应与电缆本体一样能长期安全运行，并具有与电缆相同的使用寿命。
良好的电缆附件应具有以下性能：
a. 线芯联接好: 主要是联接电阻小而且联接稳定，能经受起故障电流的冲击;长期运行后其接触电阻不应大于电缆线芯本体同长度电阻的1.2倍;应具有一定的机械强度、耐振动、耐腐蚀性能;此外还应体积小、成本低、便于现场安装。
b. 绝缘性能好: 电缆附件的绝缘性能应不低于电缆本体，所用绝缘材料的介质损耗要低，在结构上应对电缆附件中电场的突变能完善处理，有改变电场分布的措施。
由于电力电缆制造长度有限，在一条电力电缆线路中间总有若干接头，只有将各电力电缆连接起来才能正常工作，这种用来连接电力电缆的附件称为电力电缆中间接头，通称电力电缆中间接头或简称接头。
电力电缆中间接头的外壳称为电力电缆中间接头盒。
电力电缆中间头、终端头制作方法英文回答：Making a mid-head and termination head for power cables involves several steps and techniques. Here, I will explain the process in detail.First, let's discuss the mid-head making process. The mid-head is used to connect two power cables together. To make a mid-head, you will need the following materials: cable jointing kits, heat shrink tubes, cable lugs, and a heat gun.1. Prepare the cables: Strip the insulation from the ends of both cables to expose the conductors. Clean the exposed conductors with a wire brush to remove any dirt or corrosion.2. Connect the cables: Insert the cable lugs onto the conductors of both cables and crimp them using a crimpingtool. Make sure the connection is secure and the lugs are properly attached.3. Insulate the connection: Slide a heat shrink tube over the connection and position it in the middle. Use a heat gun to shrink the tube and create a tight seal around the joint. This will provide insulation and protect the connection from moisture and other external factors.4. Test the connection: Once the mid-head is made, it is important to test the connection to ensure it is working properly. Use a multimeter to check for continuity and verify that there are no faults or short circuits.Now, let's move on to the termination head making process. The termination head is used to connect the power cable to the equipment or device it is intended for. The process involves similar steps:1. Prepare the cable: Strip the insulation from the end of the cable to expose the conductors. Clean the exposed conductors with a wire brush.2. Connect the cable: Insert the cable lug onto the conductor and crimp it using a crimping tool. Ensure a secure connection.3. Insulate the connection: Slide a heat shrink tube over the lug and position it near the end of the cable. Use a heat gun to shrink the tube and provide insulation.4. Attach the termination head: Depending on the type of termination head, follow the manufacturer's instructions to attach it securely to the cable. This may involve using screws, bolts, or other fastening methods.5. Test the connection: Similar to the mid-head, it is important to test the termination head connection to ensure it is functioning correctly. Use a multimeter to check for continuity and verify that there are no faults or short circuits.中文回答：制作电力电缆的中间头和终端头涉及到几个步骤和技术。
高压电缆中间接头制作本工程高压电缆中间头采用冷缩产品，制作工艺较复杂，其制作由受过专门培训的人员进行。
（1）材料工具准备：材料：中间接头组件、特别接头鼻子、接地线鼻子、铜套管、硅胶、无水酒精、清洁擦拭绵纸、砂纸、自粘性绝缘胶带、相色带等。
工具：兆欧表、电缆拨切刀、压接钳、钢锯、钢卷尺及常用电工工具。
（2）工艺流程：①首先要用2500V兆欧表测电缆的绝缘电阻，应满足有关的技术规定；再将多余的电缆切除，电缆末端搁平、调直、锯齐；最后将热缩管穿进电缆，其端头外露长度应能方便施工。
②电缆中间接头结构前期处理：a、剥外护层：根据技术要求测定电缆外护套的剥切长度，并予以剥除。
一根电缆外护套的剥除长度为：580mm，另一根为350mm，以方便接头操作。
b、剥屏蔽层和半导电层：用扎线在离电缆外护套断口 30mm处将铠装扎紧，其余铠装层割除；从铠装断口起保留20mm内护层，其余内护层去掉；再从待连接的两根电缆由末端向两端各量取270mm，剥除这部分的铜屏蔽层，用半导电带将铜屏蔽切断处扎紧，保留40mm半导电层，其末端230mm长剥除半导电层。
c、剥绝缘层：量取电缆连接管长度L，以L/2长度将两电缆端部绝缘及内屏蔽层剥去，并将绝缘端部倒尖角、毛刺；用细纱纸或纱布，将绝缘层表面砂平、打光、绝缘层与半导电层相接处平滑过渡，不允许成齿状。
③接线端子和绝缘体安装：a、套中间接头：将铜屏蔽保留较长的一根电缆的绝缘层、半导电层和铜屏蔽层用清洁巾清理干净，套入中间接头，衬管条伸出的一端要先套入电缆，再将铜网套入另一根电缆。
b、压接连接管，确定中心：用塑料袋将中间接头和电缆绝缘临时保护好。
用砂布将线芯表面砂毛，然后用清洁巾将连接管内外表面分别套入待连接两根电缆的线芯，挤紧后先压连接管两端，再在连接管中间压接两道（共压接4道）；将连接管表面的毛刺、尖角等砂平，用清洁巾将连接管表面清洗干净，并将中间接头靠近连接管端头部位清理干净，特别注意不能在中间接头端头位置留有金属渣或其他导电物；确定已连接好的两根电缆绝缘端部的中心，由中心位置向电缆一端量取250mm，做好记号。
