NA2XY-J Power Cable Extrusion Line

NA2XY-J Power Cable Extrusion Line

NA2XY-J is a power cable that complies with the German VDE standard (DIN VDE 0276). The suffix '- J' is its key feature. Its full name is aluminum core cross-linked polyethylene insulated polyvinyl chloride sheathed power cable (with integral grounding core). Simply put, it is a NA2XY cable with an independent grounding wire.
Analysis of Letter Meanings:
N: Compliant with German standards (Norm)
A: The conductor material is aluminum. Copper conductors are usually labeled as "K" or use other codes.
2X: The insulation material is cross-linked polyethylene (XLPE Insulation). This provides excellent heat resistance and electrical performance.
Y: The inner sheath or basic sheath material is polyvinyl chloride (PVC Sheath).
-J: This suffix represents * * "flexible wire" or "installation wire", but in the context of cables, it more accurately refers to a solid yellow green dual color protective grounding core wire. This is its most core feature.
Execution standard: DIN VDE 0276.
Rated voltage: commonly 0.6/1 kV.
Operating Temperature:
Long term allowable working temperature: ≤ 90 ° C (thanks to XLPE insulation)
Maximum temperature during short circuit (maximum duration of 5 seconds): ≤ 250 ° C
Key Features:
Core advantages:
Integrated grounding wire: The "- J" model already includes a yellow green dual color protective conductor (PE wire), which does not require additional grounding wires to be laid externally, saving costs and installation time.
Excellent performance: XLPE insulation provides high current carrying capacity, excellent heat resistance, and electrical performance.
Easy installation: Integrated grounding wire makes wiring more organized and reliable, reducing the risk of wiring errors.
Disadvantages:
Containing halogens: PVC sheaths produce black smoke and toxic gases when burned.
Limitations of aluminum conductors: The connection process requires high requirements and specialized terminals need to be used.

NA2XY-J Power Cable Extrusion Line

The NA2XY-J low-voltage 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 NA2XY-J 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.

NA2XY-J 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

NA2XY-J Power Cable Extrusion Line Application

NA2XY-J cable is mainly used for fixed installation in situations where independent protective grounding wire is required. It is commonly used in:
Industrial projects with German and European standards: Widely used in power distribution systems of German funded or European standard designed factories and workshops.
Equipment power supply connection: Provide power for three-phase equipment such as machine tools, pumps, fans, etc. that require separate PE lines.
Building power distribution: Used for connecting between distribution boxes, where the neutral wire and protective earth wire must be separated.
Applicable laying method: Suitable for laying cable trays, pipelines or pallets in indoor, tunnel, cable trench and other environments. Usually not used for direct burial (armor models such as NA2XSY-J should be selected for direct burial).

NA2XY-J Power Cable Extrusion Line

The NA2XY-J low-voltage power cable extrusion production line is a complete set of equipment specifically designed for producing NA2XY-J 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.