General
Nominal voltage	0,6/1 kV
Test voltage	4 kV
Installation temperature range	-5 to +50 °C
Temperature range after installation	-30 to +70 °C
Operation temperature	+70 °C
Bending radius	12 x cable diameter
Flame retardancy	according to VDE 0472 T. 804 test type B
Conductor	bare copper according to VDE 0295, round solid (RE)
Wire insulation	PVC
Conductor marking	according to VDE 0293-308, 1 to 5 cores; from 7 cores black with white digits
Concentric conductor	made of bare copper wires, twisted with counter-twist of copper tape (copper wires inside, copper tape outside)
Outer sheath	PVC black

The cable of the brand VDE-Kabel, type NYCY 4X2,5 RE/2,5, is a fixed installation power and control cable, primarily used in industrial and switchgear installations as well as in power plants. It is particularly suitable for applications where enhanced mechanical protection against contact voltage is required. The cable features a concentric conductor, which provides additional protection and increases electrical safety. The construction is designed for use in demanding environments where high mechanical loads and electrical safety are paramount.

Applications
This cable is intended for use in industrial plants, switchgear installations, and power plants, where safe and reliable power supply and control are required. It is especially suitable for applications requiring enhanced protection against contact voltage, for example in areas with increased accident risk or in environments with high mechanical stress. Installation typically takes place in the ground or in concrete channels, where the mechanical stability and electrical insulation of the cable form the basis for safe operation.

Functions and Equipment in Detail
The conductor is made of bare copper according to VDE 0295, with the cores executed as round single-strand (RE). Core insulation is made of PVC, ensuring good electrical insulation and mechanical stability. Core identification follows VDE 0293-308, using the appropriate colours for 1 to 5 cores. From 7 cores onwards, identification is done with black cores and white numbers. A filler layer ensures even distribution of the cores in the cable cross-section. The concentric conductor consists of bare copper wires stranded around the common core sheathing, supplemented by a counter-winding made of copper tape, with the copper wires arranged in the inner layer and the copper tape in the outer layer. This design ensures effective shielding and additional protection against contact voltage.

Technology Explained Simply
The cable is rated for a nominal voltage of 0.6/1 kV, making it suitable for most industrial applications. The test voltage is 4 kV, highlighting the cable’s electrical strength. The maximum operating temperature is +70 °C, with the cable tolerating temperatures from -5 °C to +50 °C during installation. After installation, it can withstand temperatures from -30 °C to +70 °C. The bending radius is 12 times the cable diameter, allowing flexible installation without compromising mechanical integrity. Flame retardancy corresponds to test method B according to VDE 0472 Part 804 (equivalent to IEC 332-1), meaning the cable does not propagate live flame during a fire test and thus presents limited fire hazard.

Compatibility and Accessories
The cable is designed for use in existing and new industrial installations, particularly in switchgear and power plants. It can be connected using standard cable connectors, cable lugs, and other connection elements suitable for PVC-insulated cables with a cross-section of 2.5 mm². The use of concentric conductors enables better shielding and is particularly advantageous in installations with high electrical requirements.

Installation and Mounting
Installation typically occurs in the ground or in concrete channels. Installation must consider the specified temperature ranges and bending radius. The cable should not be excessively bent or stretched to maintain mechanical integrity. Core connections are made using appropriate cable lugs or connectors designed for a cross-section of 2.5 mm². Electrical connections must be secure and correctly executed to ensure reliable power supply.

Operational Advantages
The cable offers high mechanical stability and electrical safety, making it particularly suitable for demanding industrial applications. The use of a concentric conductor increases protection against contact voltage and improves shielding. PVC insulation ensures good electrical insulation and resistance to environmental influences. Flame retardancy according to VDE 0472 Part 804, test method B, reduces fire risk and increases operational safety. The maximum operating temperature of +70 °C enables reliable use even under high thermal loads.