General
Degree of protection	with green-yellow protective conductor
Nominal voltage	0,6/1 kV
Test voltage	4 kV
Installation temperature range	-5 to +70 °C
Temperature range after installation	-30 to +70 °C
Operation temperature	+70 °C
Bend radius single-core	15 x cable diameter
Bending radius multi-core	12 x cable diameter
Flame retardancy	VDE 0472 Teil 804, Prüfart B (IEC 332-1)
Conductor material	Copper, bare
Circuit board construction	Round solid (RE)
Wire insulation	PVC
Outer sheath	PVC, black
Conductor marking	according to VDE 0293-308, J = with green-yellow protective conductor
Cable type	NYY-J
Number of cores	7
Cross-section per conductor	4 mm²

The cable of the brand VDE-Kabel, type NYY-J 7X4 RE 500m, is a fixed installation power and control cable designed for use outdoors, underground, indoors, and in cable ducts. It is a copper earth cable with PVC insulation and a black PVC outer sheath, manufactured according to VDE 0295 as round single-strand (RE). The designation J indicates that the cable includes a green-yellow protective conductor, which is required for electrical safety during installation and operation. The cable construction includes a filler layer that stabilizes the conductors and ensures an even cable shape.

Applications
This cable is suitable for use in various environments, including outdoor areas, underground installations, indoor spaces, and cable ducts. It is particularly suitable for applications requiring high mechanical stability and resistance to environmental influences, such as in industry, construction, or building electrical supply. Installation typically occurs underground or in enclosed ducts, with the cable structure meeting requirements for mechanical strength and electrical insulation.

Functions and Equipment in Detail
The cable conductors are made of bare copper, manufactured according to VDE 0295. The conductors are insulated with PVC, with conductor identification according to VDE 0293-308. For up to five conductors, identification is done by color, with J indicating the presence of a green-yellow protective conductor. For six or more conductors, identification is done by black conductors with white numerals. The outer sheath is also made of PVC and is black, providing high resistance to UV radiation and mechanical stress. The filler layer ensures even distribution of the conductors and prevents cable deformation during installation.

Technology Explained Simply
The cable is rated for a nominal voltage of 0.6/1 kV, making it suitable for most industrial and commercial applications. The test voltage is 4 kV, highlighting the electrical strength of the insulating material. The maximum operating temperature is +70 °C, with installation temperatures ranging from -5 °C to +70 °C. After installation, the cable can be operated at temperatures from -30 °C to +70 °C, enabling broad use in various climate zones. The bending radius is 15 times the cable diameter for single-core conductors and 12 times for multi-core conductors, allowing flexible installation without damaging the cable. Flame retardancy corresponds to test method B according to VDE 0472 Part 804 (equivalent to IEC 332-1), meaning the cable does not propagate flame during a flame test and thus presents a low fire hazard.

Compatibility and Accessories
The cable is compatible with standard installation techniques for earth cables and can be installed in cable ducts, underground, or outdoors. It is designed for use with electrical devices, machines, and systems requiring fixed installation. The use of special connection elements, such as cable lugs or plug connectors, is required to ensure a secure electrical connection. The cable construction does not require special accessories beyond standard installation tools and connection elements.

Installation and Mounting
Installation is typically performed by qualified personnel who comply with electrical engineering regulations and applicable standards. Installation must respect the specified bending radius to avoid damaging the conductors. Underground cable installation requires sufficient depth and protective measures against mechanical damage, such as using protective conduits. Electrical connections are made using appropriate cable lugs or plug connectors, ensuring connection security and electrical insulation.

Operational Advantages
The cable offers high mechanical strength and good electrical insulation, ensuring long service life and high reliability in operation. The PVC insulation and outer sheath provide high resistance to environmental influences, including moisture, UV radiation, and mechanical stress. Flame retardancy according to VDE 0472 Part 804 (test method B) reduces fire hazard and increases operational safety. The use of a green-yellow protective conductor (J) ensures safe earthing and protects personnel from electrical hazards.

Protection class, nominal voltage, PVC, copper conductor, earth cable, flame retardancy are the central technical features characterizing the cable. The combination of these properties makes it a robust and reliable product for various applications in electrical engineering.