NA2X2Y Armored Power Cable Extrusion Line

NA2X2Y Armored Power Cable Extrusion Line

NA2X2Y is an armored power cable that complies with the German VDE standard (DIN VDE 0276). Its full name is aluminum core cross-linked polyethylene insulated steel tape armored polyvinyl chloride sheathed power cable. It is a commonly used German armored cable in situations that require mechanical protection.
Analysis of Letter Meanings:
N: Compliant with German standards (Norm)
A: The conductor material is aluminum. Copper conductors are denoted as K.
2X: The insulation material is cross-linked polyethylene (XLPE Insulation).
2Y: The first number 2 represents that the armor layer is made of steel strip; The second Y represents that the outer sheath material is polyvinyl chloride (PVC Sheath).
Execution standard: DIN VDE 0276.
Rated voltage: commonly 0.6/1 kV.
Operating Temperature:
Long term allowable working temperature: ≤ 90 ° C (XLPE insulation)
Maximum temperature during short circuit (maximum duration of 5 seconds): ≤ 250 ° C
Key Features:
Core advantages:
Powerful mechanical protection: The internal double steel belt armor layer gives it extremely strong resistance to pressure, impact, and rodent bites.
Directly buried installation: It is the preferred model for direct burial installation, without the need for additional protective pipes, saving costs and construction time.
Excellent performance: Inheriting all the advantages of XLPE insulation (high current carrying capacity, good heat resistance).
Disadvantages:
Heavy weight and high hardness: Steel tape armor greatly increases the weight and bending difficulty of the cable, with a minimum bending radius of 15-20 times the outer diameter of the cable.
Containing halogens: PVC sheaths produce black smoke and toxic gases when burned.
Higher cost: Higher cost than non armored cables.

NA2X2Y Armored Power Cable Extrusion Line

The NA2X2Y 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 NA2X2Y 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.

NA2X2Y 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

NA2X2Y Armored Power Cable Extrusion Line Application

The NA2X2Y cable is specifically designed for applications that require significant mechanical stress and may be subject to external damage.
Directly buried underground laying: This is its most classic application. Underground transmission lines used in parks, streets, construction sites, etc., directly buried in cable trenches or soil.
Tunnel and cable trench laying: used in tunnels and cable trenches where there is a risk of heavy objects falling or personnel stepping on them.
Industrial premises: Used in harsh environments such as factories, mines, ports, etc., where there may be mechanical impact or equipment compression.
Areas with many ants and mice: Steel belt armor can effectively prevent termites or mice from biting and damaging.

NA2X2Y Armored Power Cable Extrusion Line

The NA2X2Y low-voltage armored power cable extrusion production line is a complete set of equipment specifically designed for producing NA2X2Y 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.