BVR Wire Extrusion Line

BVR Wire Extrusion Line

BVR wire is a type of flexible wire specifically designed for distribution cabinets. It is a copper core polyvinyl chloride insulated flexible wire, which is used in situations where flexibility is required for fixed wiring. BVR wires are suitable for fixed installation of power devices with AC rated voltage of 450 / 750V and below. Like home lighting. Fixed wiring can be used for indoor exposed installation, conduit installation, and other occasions. For the convenience of differentiation during installation, it can be divided into seven colors: red, yellow, blue, green, black, white, and double. Due to its soft structure, BVR is also widely used in soft environments.

The only difference between BVR wire and BV wire is that the conductor diameter of R-type wire is soft copper wire. Namely: increase the number of conductors, reduce the diameter of a single conductor, and ensure that the diameter of a single conductor is less than 1 millimeter. In this way, BVR wires are very flexible, with significantly reduced installation angle requirements compared to BV wires. It is more convenient and fast to thread through conduit and trunking, reducing work intensity while greatly improving work efficiency.

The BVR wire extrusion line is a complete set of equipment specifically used for producing BVR type copper core polyvinyl chloride insulated wires. Through extrusion technology, PVC insulation material is uniformly coated on the surface of multi stranded copper conductors to manufacture building wires that comply with the national standard.

Composition of Production Line

The BVR wire extrusion line mainly includes the following core equipment:
Pay off Stand: Release copper/aluminum conductors to maintain stable tension.
Preheating Unit: Heat the conductor to improve insulation adhesion.
Extruder: Melt PVC/XLPE and evenly coat the conductor.
Cooling Tank: Segmented cooling and shaping insulation layer.
Haul off: Control the speed of the production line.
Take-up Reel: Automatic winding of finished wires.
Testing Equipment: Spark tester, laser diameter measuring system, etc.

Process Flow

Pay-off → Preheating → Extrusion coating → Cooling and shaping → Spark detection → Printing → Take-up.

BVR Wire Extrusion Line Datasheet

Model	50	60	70	80
Pay-off Type	Active or passive	Active or passive	Active or passive	Active or passive
Screw Diameter	φ50 mm	φ60 mm	φ70 mm	φ80 mm
Screw L/D Ratio	25:1	26:1	26:1	26:1
Extrusion Amount	70 kg/hr	110 kg/hr	160 kg/hr	220 kg/hr
Outlet Wire	φ0.75-4 mm	φ0.8-8 mm	φ1.5-12 mm	φ2-18 mm
Main Motor	11 KW	18.5 KW	37 KW	55 KW
Cooling Device	U type	U type	U type	U type
Storage Rack	Horizontal	Horizontal	Horizontal	Horizontal
Traction Power	4 KW	4 KW	4 KW	5.5 KW
Production Speed	500 m/min (Max.)	450 m/min (Max.)	400 m/min (Max.)	350 m/min (Max.)
Take-up Spool	φ400-630 mm	φ400-630 mm	φ500-630 mm	φ800-1000 mm
Coiling Method	Automatic	Automatic	Automatic	Automatic

BVR Wire Extrusion Line Application

The BVR wire extrusion line is a complete set of equipment specifically used for producing BVR type copper core polyvinyl chloride insulated wires. Through extrusion technology, PVC insulation material is uniformly coated on the surface of multi stranded copper conductors to manufacture building wires that comply with the national standard.