General
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
Protective conductor	ja (J)
Number of cores	7
Core cross section	2,5 mm²
Conductor marking	according to VDE 0293-308
Cable type	NYY-J
Application	Fixed installation power and control cable for outdoor, ground, indoor, cable channels
Filler compound

The cable of the brand VDE-Kabel, type NYY-J 7X2.5 RE, is a fixed installation power and control cable designed for use outdoors, in the ground, indoors, and in cable ducts. It is a copper earth cable with PVC insulation and a black PVC outer sheath, manufactured according to VDE standards. The designation NYY-J indicates a cable with a green-yellow protective conductor, where the 7 cores each have a cross-section of 2.5 mm². The conductors are round and single-strand (RE), ensuring high mechanical stability and minimal deformation during installation.

Applications
This cable is suitable for a wide range of applications in electrical installation, particularly where permanent and robust installation is required. It is commonly used in building electrics, industry, outdoor installations, and municipal engineering. Installation can be done directly in the ground, in cable ducts, or indoors, with the protection class and materials enabling use even under harsh conditions.

Functions and Equipment in Detail
The cores are made of bare copper, manufactured according to VDE 0295, and insulated with PVC. Core identification follows VDE 0293-308; for up to five cores, color coding is used, with the designation J indicating the inclusion of a green-yellow protective conductor. From six cores onwards, identification is done via black cores with white digits. A filler layer ensures even distribution of cores within the cable cross-section and supports mechanical stability. The black PVC outer sheath protects the cable from external influences such as moisture, mechanical stress, and UV radiation.

Technology Explained Simply
The rated voltage is 0.6/1 kV, enabling use in low-voltage installations up to 1000 V. The test voltage of 4 kV ensures the cable remains stable even under increased electrical loads. The maximum operating temperature is +70 °C, with installation permitted at temperatures from -5 °C to +70 °C. After installation, the cable can be operated at temperatures from -30 °C to +70 °C. The bending radius is 15 times the cable diameter for single-core conductors and 12 times for multi-core, enabling flexible installation even in tight radii. Flame retardancy corresponds to VDE 0472 Part 804, Test Method B (equivalent to IEC 332-1), meaning the cable does not produce a flammable flame during a flame test and thus presents a low fire hazard.

Compatibility and Accessories
The cable is suitable for use with standard cable lugs, connectors, and terminals designed for PVC insulation and copper conductors. It can be installed in combination with other cables of the same type or compatible systems, provided electrical and mechanical requirements are met. The use of protective conductors (J) is required to comply with safety regulations in electrical installations.

Installation and Mounting
Installation is typically done using cable reels, with laying possible directly in the ground or in cable ducts. Bending radii must be observed to avoid mechanical damage. Installation should consider ambient temperature to ensure optimal performance and service life of the cable. Core connections are made using suitable connectors designed for a cross-section of 2.5 mm².

Operational Advantages
The cable features high mechanical strength, resistance to moisture and UV radiation, and good electrical conductivity. The PVC insulation provides sufficient electrical insulation, and flame retardancy increases operational safety. The use of a green-yellow protective conductor (J) meets safety requirements for electrical installations according to VDE 0100. The combination of robust construction and low fire hazard makes this cable a reliable choice for permanent installations.

Protection Class
The cable is suitable for outdoor and underground use, with PVC insulation and outer sheath resisting mechanical and chemical stress. The protection class is not explicitly specified as an IP rating, but use in soil and outdoors is ensured by the materials and construction. The temperature resistance from -30 °C to +70 °C after installation enables use in various climate zones.

Cable Type and Standards
The type NYY-J corresponds to a fixed installation power and control cable with protective conductor, manufactured according to VDE 0295 and VDE 0293-308. Flame retardancy according to VDE 0472 Part 804, Test Method B, meets international standards and ensures safe use in electrical installations. The use of copper conductors and PVC insulation is standard in the electrical industry and ensures high reliability.

Operating Temperature
The maximum operating temperature is +70 °C, with installation permitted at temperatures from -5 °C to +70 °C. After installation, the cable can be operated at temperatures from -30 °C to +70 °C, enabling broad application.

Bending Radius
The bending radius is 15 times the cable diameter for single-core conductors and 12 times for multi-core, enabling flexible installation even in tight radii.

Flame Retardancy
The flame retardancy corresponds to VDE 0472 Part 804, Test Method B (equivalent to IEC 332-1), meaning the cable does not produce a flammable flame during a flame test and thus presents a low fire hazard.