Couplings are devices that are used forcable connections. The result is a line that is fed to various electrical installations. The couplings are quite different in parameters. The nominal voltage rating is 5 kV on average. End modifications are the closing link in the chain.
Обычная муфта состоит из манжеты, контактного rod, as well as insulators. Some modifications have a winding. In order to learn more about these devices, you should consider the types of couplings, as well as specific configurations.
Couplings (cable,heat-shrinkable) are the connecting link, and the chain on them is not closed. On the device they are different. Models are used for telephone lines. Also there are modifications for multi-core trunk cables. Cuffs in many models are installed with a lid. Contact rods are installed in various diameters. On average, the nominal voltage of the device is 5 kV. It is also important to note that there are modifications that have a cable lug.
Installation of cable sleeves can be carried outdifferent ways. Most often this happens by soldering. However, modifications with special clamping mechanisms are on the market. In this case, much depends on the size of the coupling. If we talk about the parameters, the coefficient of heating of the veins in the models fluctuates around 70%. The operating voltage at a constant frequency, as a rule, does not exceed 18 kV. The maximum temperature for short circuits is on average about 140 degrees. Many couplings have a fire hood.
As mentioned earlier, cable end sleevesare the closing link in the chain. The difference is in the presence of a compound. It represents a lead conductor. In some cases, the models use a cable lug. Insulators are most often used in a through type. Also, models use different grounding drives. In this case, the belt insulation is located near the bandage. Many couplings have a tube. Oil pressure in the middle of the device can be maintained at 220 KPa. The maximum temperature in case of a short circuit does not exceed 130 degrees. The nominal voltage of the devices is about 5 kV. To install the device, tightening bolts or clamps are used. Also there are modifications, the installation of which is carried out by soldering.
Couplings of 1 kV are often used for connectiontelephone cables. In this case, steel cuffs are used. Directly the hulls are made of cast iron. If we talk about the parameters, the oil pressure of the device is kept at about 120 MPa. Tightening bolts are used to connect the cores.
Для магистральных линий муфта кабельная (connecting) per 1 kV is not suitable. The maximum temperature parameter for short circuits in devices does not exceed 130 degrees. The tips of the models are installed behind the winding. Insulators are often applied through-type. Some devices have a handset. End modifications are characterized by the presence of a compound.
Couplings of 5 kV are used for strandedcables. The tips in the devices can be placed behind the tube. In this case, the oil pressure of the model can withstand about 150 KPa. Some devices have a bandage. It is also important to note that insulators are often used in a through type. The coefficient of heating of the veins averages 75%. By type of installation, the models differ.
Cable clutches 10 kV are designed forhigh-voltage lines. The hulls of the models are often of cast iron type. Insulators in this case are used different. The oil pressure of the device is maintained at an average of 330 KPa. The maximum temperature at a short circuit is about 180 degrees. The contact rods of the models are located under the insulators. The end modifications have a compound. Winding in the devices used steel. The operating voltage of the models with variable frequency does not exceed 30 kV.
Coupling cable (connecting) of this typesuitable for stranded wires. The cuff of the model is leaden. It is installed near the lower insulators. The winding in this case is applied in different lengths. According to the type of compound, the models differ. On average, the maximum pressure of the device is kept at 130 KPa. The rated voltage of this coupler is 7 kV. In turn, the heating coefficient does not exceed 75%.
The operating voltage of the clutch at a variable frequencyis 16 kV. There are connecting bolts for the installation of the device. The casing of the coupler is provided with a fireproof type. It is also important to note that the model has a ground drive. The bandage in this case is located above the winding. The cover of the model is made of cast iron.
Кабельные муфты данного типа используются для ground connection of high-voltage lines. The winding of the model is made of cotton strips. In this case, a steel cuff is installed. Insulators in the model are used only through type. Special fasteners are used to secure the device. It is also important to note that the coupler has a tip that is located under the bandage. The compound itself is an epoxy type.
The nominal voltage of the device is 1 kV.According to the documentation for the clutch, the oil pressure can withstand a maximum of 210 KPa. The operating voltage at a constant frequency does not exceed 30 kV. For the distribution cable line, the model is not suitable. In addition, it should be noted that the device uses a fire hood.
This coupling has a large contactkernel. The bandage in this case is located near the insulators. The cuff of this device is steel. In turn, the body is made of cast iron. Insulators in the model are only of the belt type. There is a special bracket for fixing the device. The cable lug in the device is installed together with the grounding drive. The rated voltage of the clutch is 5 kV. The initial heating temperature of the core does not exceed 80 degrees.
Oil pressure specified device withstandsabout 130 kpa. The coefficient of heating veins in the model is insignificant. It is also important to note that the device is often used to connect stranded cables. The compound in this case is missing. The operating voltage at a variable frequency is about 12 kV. The casing is missing in this case.
These cable boxes are often used whenrepair work on the main lines. The casing in this case is used fire type. To install the device, there are special locks. The cuff of the model is provided for the lead type. Directly contact rod located under the tip. The wire insulator of the model is together with the winding. It is made of cotton tapes. In turn, the insulators are made of polyethylene. The bandage in this case is missing.
The rated voltage of the coupling does not exceed 7 kV.The coefficient of heating veins is at 80%. The operating voltage of the device at a constant frequency is 14 kV. The initial temperature of the cable cores is on average 130 degrees. It is also important to mention that the oil pressure system can withstand about 200 kPa.
These cable sleeves are designed fordistribution lines. The cover in this case is used mast type. Directly plastic insulators are under the grounding conductor. The sleeve cuff is used in a lead type. The contact rod has a small diameter. The cable lug is mounted in the coupling housing under the cover.
The winding in the device is applied fromcotton tapes. Directly lead tube is located above the belt insulators. The oil pressure system can withstand a maximum of about 120 kPa. In turn, the limiting temperature during a short circuit is 180 degrees. The operating voltage at a constant frequency of the model is 15 kV. Tightening bolts are provided to install the device.
Указанная муфта кабельная концевая (heat shrinkable) is designed for telephone lines. Insulators for this model are made of polyvinyl chloride. In this case, the cuff is installed above the contact rod. Directly cable lug is used in large diameter. It is also important to note that the coupling has bushing insulators. The rated voltage of the system is 5 kV. The initial heating temperature of the cores does not exceed 70 degrees.
Operating voltage at constant frequency inthe average is 15 kV. Tightening bolts for connecting cables in the device are missing. Directly installation of cable sleeves is carried out by soldering. Compound in this case is not provided. It is also important to note that the coupling has a bandage with a protective fireproof casing.
