General
Cable type	NYY-J 4X185 SM
Conductor material	Copper
Circuit board construction	sector-shaped stranded (SM)
Wire insulation	PVC
Outer sheath	PVC black
Protective conductor	ja (J)
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	according to VDE 0472 Part 804, test type B (IEC 332-1)

The cable NYY-J 4X185 SM from VDE-Kabel is a fixed installation power and control cable designed for use outdoors, in the ground, indoors, and in cable ducts. It is particularly suitable for applications requiring high mechanical and chemical resistance as well as secure power supply. The cable includes a protective conductor (J) and is therefore suitable for use in electrical installations according to VDE regulations that require grounding.

Applications
This cable is used in industrial electrical engineering, construction, and energy supply. It is intended for installation in ground channels, underground outdoors, in concrete structures, or in enclosed cable ducts. Indoor use is also possible, provided the environmental conditions meet the specified temperature and humidity requirements. The protection class and materials ensure high resistance to mechanical stress, moisture, and environmental influences.

Functions and Equipment in Detail
The cable consists of four conductors, each with a cross-section of 185 mm², made of bare copper. The conductors are sector-shaped multi-strand (SM), which enables optimal current conduction and reduced bending sensitivity. The conductor insulation is made of PVC, offering good insulation performance and chemical resistance. Conductor identification follows VDE 0293-308, with standardized color coding for the first five conductors. The protective conductor is marked green-yellow, ensuring compliance with VDE standards for grounding systems.

Technology Explained Simply
The rated voltage is 0.6/1 kV, meaning the cable is designed for voltages up to 1 kV in alternating current. The test voltage of 4 kV serves quality control and ensures the cable operates safely even under increased electrical stress. The maximum operating temperature is +70 °C, with cable installation permitted at temperatures from -5 °C. After installation, the cable can be operated at temperatures from -30 °C to +70 °C, enabling broad application in various climate zones. The bending radius is 15 times the cable diameter for single-core conductors and 12 times for multi-core, allowing flexible installation even in tight radii. Flame retardancy according to VDE 0472 Part 804, test method B (equivalent to IEC 332-1), ensures the cable does not propagate live flame during fire exposure, minimizing fire load.

Compatibility and Accessories
The cable is suitable for use with standard cable glands, cable lugs, and other connection elements designed for PVC insulation and copper conductors. It can be installed together with other cables of the same rated voltage and protection class, provided mechanical and electrical requirements are met. Use of cable drums or reels is common, with installation preferably done in a continuous pull to avoid mechanical damage.

Installation and Mounting
Installation requires compliance with VDE regulations and local construction and electrical installation standards. Installation typically occurs underground, with minimum depth and protection against mechanical damage (e.g., from traffic or construction activities) to be considered. Bending radii must be observed to avoid damage to conductors or insulation. Cable ends must be connected after installation, with connection techniques (e.g., soldering, cable lugs) meeting the requirements of the respective installation.

Operational Advantages
The cable offers high electrical conductivity due to the copper conductor and reliable insulation via PVC. The sector-shaped conductor design reduces bending sensitivity and allows more compact installation. Flame retardancy increases operational safety, especially in enclosed spaces or installations with increased fire risk. High mechanical strength and resistance to environmental influences ensure long service life and low maintenance requirements.