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Power Cable Equipment Solutions

Applicable cables: Power wiring, power cable, control cable

Construction BV Wire
Definition and Applications
BV wire is a type of PVC copper-core wire insulate. It is primarily used for conducting electricity and transmitting electrical energy within buildings, finding extensive application in power supply systems, lighting systems, air conditioning systems, and communication systems. The versatility of BV Wire is evident in the following areas:
1. Power Supply Systems:
BV Wire is crucial for the internal power supply systems of buildings, facilitating the transfer of electricity from the power source to various electrical devices. It connects power sources, switches, sockets, and lighting fixtures to ensure the supply and control of electrical energy.
2. Lighting Systems:
BV Wire plays a pivotal role in the lighting systems of buildings, transmitting electrical energy to light fixtures for their proper functioning. As one of the main consumers of electrical power within buildings, the role of BV Wire in lighting systems is indispensable.
3. Air Conditioning Systems:
BV Wire is also vital in the air conditioning systems of buildings. These systems consist of components such as compressors, air conditioning units, ducts, power control panels, and terminal devices, all of which rely on BV Wire to receive and operate with electrical energy.
4. Communication Systems:
Beyond power transmission, BV Wire can also be used for the transmission of communication signals. For instance, telephone and computer lines can be routed through electrical wiring.

Specifications and Applications
BV Wire comes in various specifications, each suited for different sectors such as residential, commercial, and industrial settings. Selecting the appropriate specification of BV Wire based on actual needs ensures the proper operation of electrical circuits.
1. Residential BV Wire:
Residential BV Wire typically uses specifications like 1.5 mm², 2.5 mm², and 4 mm². It is mainly used for home power supply and lighting systems, including sockets and light fixtures.
2. Commercial BV Wire:
Commercial BV Wire usually employs specifications such as 4 mm², 6 mm², and 10 mm². Due to the higher power demands in commercial buildings, larger wire cross-sectional areas are necessary.
3. Industrial BV Wire:
Industrial BV Wire generally uses specifications like 10 mm², 16 mm², and 25 mm². Due to the high power demands in industrial areas, larger wire cross-sectional areas are necessary to meet the requirements of heavy loads.
4. High-Voltage BV Wire:
High-voltage BV Wire is used for the transmission of high-voltage electrical energy and typically employs specifications such as 35 mm², 50 mm², and 70 mm². These wires are used to connect substations and major power supply networks.

Considerations for Selecting BV Wire
The selection of BV Wire should take into account several factors, including power supply capacity, load requirements, line length, and safety standards. Choosing the correct specification of electrical wiring is essential for ensuring the safety and stable operation of electrical circuits.

Common Models and Standards of BV Wire
There are various models of BV Wire, each suitable for different application scenarios and adhering to specific standards. Examples include 60227 IEC 01(BV), 60227 IEC 02(RV), and BVV. These models and standards ensure the reliability and safety of BV Wire under different environmental conditions and usage requirements.

Conclusion
BV Wire is an essential method of conducting and transmitting electrical energy within buildings. It plays a significant role in power supply systems, lighting systems, air conditioning systems, and communication. Different sizes of wires are mainly used in different areas such as domestic, commercial and industrial, etc. Choosing the right size of wiring according to the actual needs can ensure the normal operation of the circuit.

Conductor  Drawing  



1. Large Drawing:
Copper rods with a diameter of 6mm are drawn down to approximately 2.6mm.


2. Medium Drawing:
Copper rods with a diameter of 2.6mm are drawn down to approximately 0.8mm.


3. Fine Drawing:
Copper wires with a diameter of 0.8mm are drawn down to approximately 0.2mm.


4. Copper Wire Annealing: 
Vacuum furnace can be used for centralized annealing or continuous drawing annealing.


5. Medium Drawing: 
Can be performed using single-head drawing or multi-head drawing, with a preference for multi-head drawing. 

Conductor Stranding  



1. Frame Twisting:
This method is used for twisting large cross-sectional conductors. It features a single-pitch pay-off reel, which results in low efficiency. The lack of a back twist function means that the twisted product retains stress from the twisting process, making the conductor relatively stiff.


2. Cage Twisting:
Suitable for large or medium cross-sectional conductors, this technique also uses a single-pitch pay-off cage, leading to low efficiency. However, it includes a back twist function, which eliminates stress from the twisting process, resulting in a more flexible conductor.


3. Bundle Twisting:
Designed for small cross-sectional conductors, this method employs an angular bow double-pitch structure, offering high efficiency. Similar to frame twisting, it lacks a back twist function, so the twisted product retains stress, and the conductor is relatively stiff.


4. Customers select the twisting process and the number of machines based on their production requirements.

Core Wire Extrusion  



1. Core Extrusion Line Configuration:
A 90-120 extruder is generally selected, compatible with materials including PVC, PE, TPE, TPU, LSZF, XLPE, and XLPVC etc.


2. Auxiliary Equipment Configuration:
* Double-head passive payoff
* Front tension capstan (caterpillar or double-wheel type)
* Straightening wheel
* Strip injection machine (optional)
* Movable water cooling tank
* Printer
* 15-meter water cooling tank
* Double-wheel capstan or caterpillar capstan
* Accumulator frame (optional)
* Large spool take-up


3. Optional Testing Equipment can be selected for additional specific needs:
* Spark tester
* Laser diameter gauge
* Etc.

Cabling     



1. Cabling Main Twister Configuration: 
For large or medium cable cross-sectional areas cabling, a planetary stranding machine is typically used; 


For small cable cross-sectional areas cabling, a cantilever stranding type is used for multi core wire stranding.


2. Auxiliary Equipment Configuration:
* Taping machine
* Armor wrapping machine (optional)
* Capstan
* Take-up
* Pay-off, the number of pay-off heads depending on customer demand.


3. Optional Testing Equipment can be selected for additional specific needs:
* Spark tester
* Etc.

Braided Shielding  Layer  



1. Standard Power Cable Production Configuration:
Standard power cables are manufactured without a braiding process. However, by integrating a braiding machine, the production line can be expanded to accommodate various other cable types.


2. Braiding Machine Configuration:
Braiding machines with 16 to 24 spindles are typically employed.


3. Optional Braiding Machine Features:
Braiding machines can be equipped with either mechanical pitch control or electronic pitch control. 

Sheath Extrusion  



1. Sheathe Extrusion Line Configuration: 
A 90-150 extruder model is typically selected, suitable for PVC, PE, TPE, TPU, LSZF, XLPE, and XLPVC etc.


2. Auxiliary Equipment Configuration: 
* Single-head large spool passive pay-off
* Front tension capstan (caterpillar or double-wheel type)
* Powder machine
* Movable water tank
* Oil ink printer (or inkjet coder)
* 15-meter water tank
* Caterpillar capstan
* Large spool take-up
* Etc.


3. Testing Equipment: 
* Spark testers
* Diameter gauges devices
* Etc.