YJV22 Armored Power Cable Extrusion Line

YJV22 Armored Power Cable Extrusion Line

YJV22 Cable Full Name: Copper Core XLPE Insulated Steel Tape Armored PVC Sheathed Power Cable. It is a very common type of armored cable in power systems, renowned for its excellent mechanical protection capabilities.
Letter Meanings:
YJ: Represents the cable's insulation material, which is cross-linked polyethylene (XLPE).
V: Represents the cable's inner/outer sheath material, which is polyvinyl chloride (PVC).
2: Represents steel tape armor. This is the core difference between it and ordinary YJV cables.
2: Represents the polyvinyl chloride outer sheath (PVC), which wraps around the armor layer to prevent corrosion.
(Simplified understanding: The first digit "2" indicates the armor layer is steel tape, and the second digit "2" indicates the outer sheath is PVC).
Operating Temperature:
Long-term allowable operating temperature: ≤90°C (same as YJV).
Short-circuit temperature (max. 5s duration): ≤250°C.
Main Features:
Core Advantages:
Strong Mechanical Protection: The internal double steel tape armor layer provides the cable with extremely high resistance to compression, impact, and rodent bites.
Suitable for Direct Burial: Due to its exceptional pressure resistance, YJV22 cable is the preferred model for direct burial installation, eliminating the need for additional protective conduits, thus saving costs and time.
Excellent Performance: Inherits all the electrical advantages of YJV cables, such as high current-carrying capacity and good heat resistance.
Disadvantages:
Heavy Weight and High Rigidity: The steel tape armor layer significantly increases the cable's weight and bending difficulty, requiring more manpower during installation and a larger minimum bending radius (typically ≥ 15-20 times the cable's outer diameter).
Contains Halogens: The PVC sheath produces black smoke and toxic gases when burned.
Higher Cost: More expensive than non-armored YJV cables.

YJV22 Armored Power Cable Extrusion Line

The YJV22 low-voltage armored power cable extrusion production line is a complete set of equipment specifically designed for manufacturing insulated cores and protective sheaths of power cables rated at 0.6/1 kV and below. Its core process involves melting solid plastics (such as PVC or XLPE) through heating and pressurization, then continuously and uniformly coating conductors (copper/aluminum wires) or assembled cable cores. After cooling and solidification, a smooth, dense, and uniformly thick insulating layer or protective sheath is formed.

Core Components

The YJV22 armored power cable extrusion production line is a highly coordinated automated system, primarily consisting of the following major components:
Pay-off Unit:
Supports and releases the conductor or cable core, providing stable and controllable tension to prevent thinning or twisting of the conductor.
Preheater:
Heats the conductor before it enters the die head to remove moisture, reduce internal stress, and improve adhesion between the plastic and the conductor.
Extruder:
Screw: Conveys, compacts, melts, and homogenizes the plastic.
Barrel: Heats and cools the plastic.
Drive Motor: Provides power to the screw.
Die Head: Connects the extruder to the die.
Die (Tip and Die): Determines the thickness, concentricity, and shape of the extruded layer.
Cooling Trough:
Rapidly cools and solidifies the high-temperature cable. Typically features segmented temperature control to ensure material stability and avoid internal stress.
Haul-off Unit:
Provides the driving force for the production line. Its speed must be extremely stable, as it is critical for ensuring uniform extrusion thickness.
Spark Tester:
An online quality inspection device that applies high voltage to the insulating layer to detect defects such as pinholes or impurities, triggering alarms and marking the locations.
Take-up Unit:
Winds the finished cable neatly onto a reel, maintaining constant tension and synchronizing with the haul-off speed.
Control System:
Uses a PLC / industrial computer to centrally control all parameters (temperature, speed, tension, etc.), ensuring stable and reproducible production.

YJV22 Armored Power Cable Extrusion Line Datasheet

Model	70	80	90	100	120
Screw Diameter (mm)	φ70	φ80	φ90	φ100	φ120
Screw L/D Ratio	26:1	26:1	26:1	25:1	25:1
Extrusion Amount (kg/hr)	140	200	250	320	450
Outlet Wire (mm)	2-15	3-25	5-35	8-60	10-80
Total Power (KW)	40	55	63	120	165
Production Speed(Max., m/min)	300	200	200	100	80
Take-up Spool	500/800	800/1250	800/1600	1000/2000	2000/2500
Storage Length	240 m	200 m	180 m	0	0

YJV22 Armored Power Cable Extrusion Line Application

The YJV22 low-voltage armored power cable extrusion production line is a complete set of equipment specifically designed for producing YJV22 armored cables & other insulation cores and sheaths of power cables with rated voltage of 0.6/1kV and below. The details are as follows:

Conductor Insulation

Function: Extrudes insulating material onto copper or aluminum conductors to form the primary insulation layer.
Common Materials: Cross-linked polyethylene (XLPE), polyethylene (PE), polyvinyl chloride (PVC), etc.
Requirements: Uniform thickness, high concentricity, absence of impurities, and no microvoids. The insulation extrusion process for high-voltage cables demands the highest technical precision.

Sheathing Extrusion

Function: Extrudes a protective sheath over the assembled cable core.
Purpose: Provides mechanical protection, corrosion resistance, moisture resistance, UV resistance, flame retardancy, etc.
Common Materials: Polyvinyl chloride (PVC), polyethylene (PE), polyolefins, etc.