NYY-J underground cable: Guide for wholesalers and B2B buyers

As an electrician, purchaser or professional in industries such as construction, technical offices or laboratories, choosing the right underground cable is crucial for the safety, reliability and efficiency of your projects. The NYY-J underground cable is a robust and versatile solution for demanding applications, widely used in Germany, Austria, the Netherlands, Belgium, Sweden, Finland and France. This guide provides a detailed analysis of underground cables focussing on NYY-J, their technical specifications, applications and our range at ekabel24.de. Optimised for wholesale and B2B buyers, construction companies, technical offices and laboratories, this guide aims to help you make informed purchasing decisions.

What is an underground cable (NYY-J)?

An underground cable is a power cable specifically designed for use in demanding environments, such as direct burial, indoors, cable ducts or in water. The NYY-J cable is a proven choice for power distribution and control applications. The designation "NYY-J" is composed as follows:

• N: Standardised cable.
• Y: PVC (polyvinyl chloride) insulation of the conductors.
• Y: PVC outer sheath for durability and environmental protection.
• J: With green-yellow protective conductor for increased safety.

This design makes the NYY-J cable ideal for installations where high safety and quality standards apply.

Main features of the NYY-J underground cable

• Conductor: Bare copper, available in round solid (RE), round stranded (RM), sector-shaped solid (SE) or sector-shaped stranded (SM) versions.
• Insulation: High-quality PVC that provides excellent electrical insulation and resistance to environmental influences.
• Outer sheath: Black PVC, UV-resistant, moisture-resistant and mechanically robust.
• Protective conductor: Green/yellow protective conductor for increased safety.
• Rated voltage: 0.6/1 kV, suitable for low-voltage applications.
• Test voltage: 4 kV, for reliable performance under load.
• Temperature range:
  • During installation: -5 °C to +50 °C.
  • After installation: -30 °C to +70 °C.
  • Maximum operating temperature: +70 °C.
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• Bending radius:
  • Single core: 15 x cable diameter.
  • Multi-core: 12 x cable diameter.
• Flame resistance: Complies with IEC 60332-1, minimises fire propagation.

These properties make NYY-J cables ideal for demanding applications where environmental resistance and safety are critical.

Applications of NYY-J underground cables

NYY-J cables are versatile and are used in various industries, including:

• Construction companies: For powering buildings, infrastructure projects and temporary construction sites.
• Technical offices: When planning power distribution systems for urban developments or industrial complexes.
• Laboratories: For powering sensitive equipment in controlled environments.
• Wholesale and B2B buyers: A staple in wholesale for the construction, energy or industrial sectors.
• Renewable energies: In solar farms or wind turbines for underground power transmission.
• Utilities and municipalities: For street lighting, traffic control systems and public infrastructure.

Unlike cables for electric vehicles, NYY-J cables are ideal for static, long-life installations.

Why choose NYY-J underground cables for your project?

1. durability and environmental resistance

The PVC insulation and outer sheath provide protection against moisture, UV radiation and chemical influences, ideal for direct burial.

2. safety and compliance with standards

The green/yellow earth conductor increases safety through reliable earthing. Compliance with standards is essential.

3. versatility

With a wide range of cross-sections and core configurations, NYY-J cables can be customised to meet specific project requirements.

4. cost efficiency for B2B

NYY-J cables offer a good balance of performance and price, especially for wholesale.

5. easy installation

NYY-J cables are designed for easy installation in various environments.

NYY-J product range at ekabel24.de

At ekabel24.de, we offer a comprehensive range of NYY-J underground cables, including

• NYY-J 3x1.5 RE to 5x25 mm²: In stock for immediate delivery.
• NYY-J >16 mm²: On request for high-performance applications.
• Cut to size options: Sold by the metre to minimise waste.
• Other variants:
  • NYY-O: Without green/yellow protective conductor.
  • NYCY, NYCWY: With concentric conductors for shielding.
• Accessories: Cable covers, warning tapes and connectors.

Contact our sales team for quotations.

Technical considerations for buyers

1. cross-section and number of cores

Select the appropriate cross-section based on current carrying capacity and voltage drop.

2. installation environment

Consider ground conditions and mechanical risks.

3. copper surcharge

NYY-J cables are subject to a copper surcharge. Please contact us.

4 Standards and tests

Our cables are subjected to stringent tests.

5 Delivery times

Standard cables are dispatched within one working day.

Tips for maximum efficiency and project success

• Project planning: Co-operate with technical offices at an early stage.
• Wholesale: Take advantage of our flexible pricing and cut-to-size options.
• Sustainability: NYY-J cables are durable and recyclable.

Conclusion

The NYY-J underground cable is an indispensable element for reliable power distribution. At ekabel24.de, we offer an extensive range, backed up by fast delivery and support. Visit us for more information or a quote.