General
Nominal voltage	0,6/1 kV
Test voltage	4 kV
Operation temperature	+70 °C
Installation temperature range	-5 to +70 °C
Temperature range after installation	-30 to +70 °C
Bend radius single-core	15 x cable diameter
Bending radius multi-core	12 x cable diameter
Flame retardancy	VDE 0472 T. 804 test type B
Conductor type	sector-shaped stranded
Conductor marking	according to VDE 0293-308
Outer sheath	PVC black
Wire insulation	PVC
Conductor material	Copper
Conductor cross section	150 mm²
Number of cores	4
Protective conductor

The cable of the brand VDE-Kabel, type NYY-J 4X150 SM, 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 a construction suitable for durable and safe power supply in various environments. The designation NYY-J indicates a cable with PVC insulation and outer sheath, where the letter J denotes the integrated green-yellow protective earth conductor. The specification 4X150 means the cable has four conductors, each with a cross-section of 150 mm². The suffix SM stands for sector-shaped multi-strand conductors, describing a special conductor arrangement used for larger cross-sections to improve bending and installation properties.

Applications
This cable is designed for use in outdoor installations, underground installations, buildings, and cable ducts. It is particularly suitable for applications requiring high mechanical and chemical resistance, as well as good resistance to environmental influences. Use outdoors or underground is possible due to the robust PVC sheathing and protection class, which offers high resistance to moisture and mechanical stress. The cable construction meets requirements for permanent installation in various environments, including industrial and commercial facilities.

Functions and Equipment in Detail
The conductors are made of bare copper, manufactured according to VDE 0295, and constructed in a sector-shaped, multi-strand configuration (SM). This design enables better flexibility and even distribution of mechanical stresses within the cable. 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 the green-yellow conductor identified as the protective earth (J). The outer sheath is made of black PVC, providing high mechanical strength and weather resistance. A filler layer ensures even distribution of the conductors within the cable cross-section and prevents individual conductors from shifting.

Technology Explained Simply
The rated voltage is 0.6/1 kV, meaning the cable is designed for use in low-voltage networks up to 1 kV. The test voltage of 4 kV serves as a safety margin and ensures electrical insulation even under increased stress. The operating temperature is limited to a maximum of +70 °C, with the cable tolerating temperatures from -5 °C to +70 °C during installation. After installation, it 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 conductors, enabling flexible installation. Flame retardancy corresponds to VDE 0472 Part 804, Test Method B (equivalent to IEC 332-1), meaning the cable does not propagate flame during a fire test and thus presents limited fire hazard.

Compatibility and Accessories
The cable is compatible with standard sockets, switches, distributors, and other electrical components in the low-voltage range. It can be integrated into existing installations that have the same rated voltage and required cross-sections. The use of cable reels or spools is common, with length varying by supplier. The cable construction allows installation in cable ducts, underground conduits, or directly in the ground, while complying with relevant regulations and standards (e.g., VDE 0100).

Installation and Mounting
Installation requires compliance with applicable regulations, particularly VDE 0100 and relevant installation standards. Installation is typically done using cable reels, with bending radii and maximum permissible pulling forces to be observed. Cable ends should be stripped before connection to ensure correct polarity and a secure electrical connection. Underground installation usually requires protective conduit or sufficient earth cover to prevent mechanical damage.

Advantages in Operation
The cable offers high mechanical strength, good weather resistance, and reliable electrical insulation. The integrated green-yellow protective earth conductor (J) ensures safe grounding and meets requirements for protection against electric shock. The PVC sheathing provides high protection against moisture, UV radiation, and chemical influences. Flame retardancy according to VDE 0472 Part 804, Test Method B, reduces fire risk in case of short circuits. The sector-shaped, multi-strand conductor construction (SM) improves flexibility and facilitates installation, especially for larger cross-sections.