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 type	Round solid (RE)
Wire insulation	PVC
Outer sheath	PVC black
Protective conductor	with green/yellow protective conductor (J)
Conductor marking	according to VDE 0293-308

The copper earth cable NYY-J 4X6 RE from VDE-Kabel is a fixed installation power and control cable designed for use outdoors, in the ground, in indoor spaces, and in cable ducts. It is suitable for applications requiring a robust and long-lasting connection over long distances, for example in industry, construction, or for supplying outdoor installations. The cable features a green-yellow protective conductor (J), ensuring compliance with VDE and EU protective conductor regulations.

Applications
This cable is suitable for use in underground installations, outdoors, and in enclosed indoor spaces. It can be installed in cable ducts and is designed for permanent installations. Installation in the ground requires sufficient depth and protective measures against mechanical damage, although the cable itself is mechanically resilient due to its PVC outer sheath. Operating conditions include temperatures from -5 °C to +70 °C during installation and from -30 °C to +70 °C after installation, enabling broad applicability in various climate zones.

Functions and Features in Detail
The cable consists of bare copper conductors manufactured according to VDE 0295. The conductors are round and single-strand (RE), ensuring high mechanical stability and minimal deformation during installation. The cores are insulated with PVC, providing good electrical insulation and chemical resistance. Core identification follows VDE 0293-308, with color and number coding enabling identification of individual cores. The green-yellow protective conductor (J) is integrated as standard to ensure electrical safety.

Technology Explained Simply
The rated voltage is 0.6/1 kV, allowing use in low-voltage networks up to 1 kV. The test voltage of 4 kV ensures the cable’s electrical strength. The maximum operating temperature is +70 °C, defining thermal load capacity under normal operating conditions. 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 damage. Flame retardancy corresponds to VDE 0472 Part 804, Test Method B (equivalent to IEC 332-1), meaning the cable does not produce flames during a fire test and does not propagate flame beyond a defined area.

Compatibility and Accessories
The cable is compatible with standard cable lugs, connectors, and terminals designed for PVC-insulated cables. It can be installed in cable ducts, conduits, or directly in the ground. Connections to other cables or devices are made using appropriate connection techniques such as soldering or screw connections, ensuring compliance with electrical and mechanical requirements. Installation does not require special tools, but proper handling and securing are necessary to ensure long-term functionality.

Installation and Mounting
Installation is carried out by direct underground laying, in cable ducts, or in conduits. Underground installation requires a minimum depth, which varies depending on the environment and local regulations. Bending radii must be observed to avoid damaging the conductors. Connections at ends or branch points are made using suitable cable glands or connectors designed for the cable type and cross-section. Electrical testing after installation is recommended to verify the integrity of the connection.

Operational Advantages
The cable offers high mechanical strength due to its PVC outer sheath and bare copper conductors. PVC insulation ensures good electrical insulation and chemical resistance. The integrated green-yellow protective conductor enhances operational safety. Flame retardancy according to VDE 0472 Part 804, Test Method B, reduces fire risk. Outdoor and underground use is ensured by the robust construction and temperature resistance from -30 °C to +70 °C after installation. The cable type is designed for permanent installations and requires no special maintenance during normal operation.