VDE-Kabel 246250 NYY-J 4x50 mm² SM Eca PVC-insulated earth cable drum content_copy

The cable of the brand VDE-Kabel, type NYY-J 4X50 SM, is a fixed installation power and control cable designed for use outdoors, in the ground, indoors, and in cable ducts. It is used for the transmission of electrical power and control signals in industrial, commercial, and municipal installations. The cable features a black-coloured PVC outer sheath and is equipped with a filler sheath that stabilizes the conductors inside. The conductors themselves are made of bare copper, manufactured according to VDE 0295. The conductor construction is sector-shaped and multi-strand (SM), with the 50 mm² conductors compacted to ensure optimal current flow and mechanical stability. The conductor insulation is also made of PVC, and the conductor identification follows VDE 0293-308, where the designation J indicates the inclusion of a green-yellow protective conductor.

Applications
This cable is suitable for use in underground installations, outdoor environments, and indoor spaces. It can be installed in cable ducts and is appropriate for applications in industry, construction, energy supply, and building automation. Installation must consider the specified temperature ranges: during installation, the temperature must not fall below -5 °C; after installation, operation is possible within a range of -30 °C to +70 °C. The maximum operating temperature is +70 °C, ensuring suitability for normal environmental conditions.

Functions and Equipment in Detail
The cable's construction ensures high mechanical strength and durability. The sector-shaped, multi-strand conductor structure (SM) ensures even current distribution and reduces mechanical stress during bending. The PVC outer sheath provides protection against external influences such as moisture, mechanical stress, and UV radiation. The conductor identification according to VDE 0293-308 enables clear identification of individual conductors, preventing incorrect connections. The integrated green-yellow protective conductor (J) meets the requirements for protective conductors in electrical installations.

Technology Explained Simply
The rated voltage of the cable is 0.6/1 kV, meaning it is suitable for applications with an operating voltage up to 1 kV. The test voltage of 4 kV is used for quality testing and ensures the cable remains stable even under increased electrical stress. Flame retardancy according to VDE 0472 Part 804, test method B (equivalent to IEC 332-1), guarantees that the cable does not burn independently and does not propagate flames. This is particularly important in enclosed spaces or cable ducts, where rapid fire spread must be avoided. The bending radius is 15 times the cable diameter for single-core conductors and 12 times for multi-core cables, which must be considered during installation to avoid damaging the conductor structure.

Compatibility and Accessories
The cable is designed for use in electrical installations complying with standards VDE 0295 and VDE 0293-308. It is compatible with standard connectors, cable lugs, and other installation components designed for PVC-insulated cables. Use in underground installations may require additional protective measures such as protective sheathing or protective conduits, depending on local conditions and regulations.

Installation and Mounting
Installation involves fixed laying in the ground, in cable ducts, or indoors. Laying must consider the specified temperature ranges and bending radius. The minimum temperature during installation is -5 °C to prevent damage to the PVC sheath. After installation, the cable is designed for operating temperatures up to +70 °C. Installation requires the use of appropriate tools and knowledge of electrical installation practices to ensure a safe and durable connection.

Operational Advantages
The cable offers high mechanical and thermal stability, enabling long service life and low maintenance frequency. The integrated protective conductor (J) meets the requirements for protective conductors in electrical installations and increases safety. Flame retardancy according to VDE 0472 Part 804, test method B, reduces fire risk and protects the surrounding environment in the event of a short circuit. The PVC insulation provides good protection against moisture and mechanical stress, increasing reliability in various environments. The sector-shaped, multi-strand conductor structure (SM) ensures even current distribution and reduces mechanical stress during bending, extending the cable's service life.

General
Nominal voltage	0,6/1 kV
Test voltage	4 kV
Installation temperature range	-5 °C
Temperature range after installation	-30 °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 Part 804, test type B (IEC 332-1)
Conductor material	Copper, bare -
Conductor construction	sector-shaped stranded (SM) -
Wire insulation	PVC -
Outer sheath	PVC black -
Conductor marking	according to VDE 0293-308 -
Protective conductor	J = with green-yellow protective conductor -

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