NA2XSY Armored Power Cable Extrusion Line

NA2XSY Armored Power Cable Extrusion Line

NA2XSY 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 halogen-free polyolefin sheathed steel wire armored power cable. It is a high-performance German standard armored cable that combines halogen-free characteristics and steel wire armor, suitable for demanding environments.
Analysis of Letter Meanings:
N: Compliant with German standards (Norm).
A: The conductor material is aluminum. Copper conductors are usually labeled as K.
2X: The insulation material is cross-linked polyethylene (XLPE Insulation). Provide excellent heat resistance and electrical performance.
S: Representing halogen-free sheath material. This is the core difference from NA2X2Y.
Y: In addition, the sheath material is specifically Halogen free Polyolefin Sheath.
Execution standard: DIN VDE 0276.
Rated voltage: commonly 0.6/1 kV.
Working Temperature:
Long term allowable working temperature: ≤ 90 ° C (thanks to XLPE insulation)
Maximum temperature during short circuit (maximum duration of 5 seconds): ≤ 250 ° C
Main Features:
Core advantages:
Environmental Safety (LSZH): Halogen free, Low Smoke, Low Toxicity. It is a mandatory requirement for densely populated areas to not produce corrosive smoke and toxic gases during combustion.
Extremely high tensile strength: The steel wire armor layer enables it to withstand enormous mechanical tensile forces, making it suitable for vertical laying, large spans, or underwater environments.
Excellent electrical performance: XLPE insulation provides high current carrying capacity and heat resistance.
Good weather resistance: The halogen-free polyolefin sheath is UV resistant and moisture resistant, and can be used outdoors.
Disadvantages:
Heavy weight and high cost: Steel wire armor and halogen-free materials make it one of the highest cost and weight types in German standard cables.
Difficulty in bending: The hardness is extremely high, and the minimum bending radius is very large (usually ≥ 20 times the outer diameter of the cable).
High installation process requirements: Especially for the armor grounding of single core cables, there are special requirements.

NA2XSY Armored Power Cable Extrusion Line

The NA2XSY 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 NA2XSY 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.

NA2XSY 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

NA2XSY Armored Power Cable Extrusion Line Application

The NA2XSY cable is designed for applications that require extremely high mechanical strength and the highest safety standards, and is a "high-performance" solution:
Vertical trunk lines in electrical shafts of high-rise buildings, hospitals, subway stations, and airports in densely populated public places. Steel wire armor is load-bearing and has halogen-free characteristics to ensure fire safety.
Large span overhead laying: Transmission lines crossing canyons and rivers, with steel wire armor providing tensile strength.
Underwater laying: Underwater routes for lakes and rivers that can withstand the impact and tension of water flow.
High risk industrial environment: areas such as chemical and petroleum platforms that require both mechanical protection and non-toxic and non corrosive cables.
Tunnels and mines: Enclosed spaces where there may be a risk of heavy objects falling and evacuation is difficult.

NA2XSY Armored Power Cable Extrusion Line

The NA2XSY low-voltage armored power cable extrusion production line is a complete set of equipment specifically designed for producing NA2XSY 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.