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UNE 21123 Cable


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UNE standards are released by AENOR, the Spanish Association for Standardisation and Certification. As it is a member of ISO, IEC and CENELEC, many of its standards are set in conjunction with European and international conventions.
UNE 21123 refers to the design and cross-sectional area of cables used by utilities on power distribution circuits with a voltage rating of up to and including 600/1000V.


There are a number of sub-sections to UNE 21123 standard covering variations on the cable construction.

UNE 21123-1 PVC (Polyvinyl Chloride) insulated and sheathed
UNE 21123-2 XLPE (Cross-linked Polyethylene) insulated and PVC sheathed
UNE 21123-3 EPR (Ethylene Propylene Rubber) insulated and PVC sheathed
UNE 21123-4 XLPE insulated and Polyolefin sheathed
UNE 21123-5 EPR insulated and Polyolefin sheathed

Cables manufactured in accordance with UNE 21123 are general wiring cables, however the different sub-sections of this standard ensures their suitability for different industries. For example, Part 5 is used widely within the Oil & Gas industries.
Eland Cables supplies a comprehensive range of specialist and general wiring cables. This includes the RZ1MZ1-K, a cable manufactured in accordance with UNE 21123 and used across various industries such as Oil, Gas & Petrochemical and Transmission, Distribution & Power Networks.
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About Eland Cables

About Eland Cables

Established in 1975, Eland Cables is a supplier of power, data, instrumentation and control cables and cable accessories to the world's most demanding industries and to some of its most prestigious projects. Our reputation is built on an unswerving focus on quality, technical expertise and customer service.


Our focus on quality has resulted in our in-house specialist cable testing facility securing the ISO 17025 accreditation. This certifies the competence, impartiality and performance capability of our laboratory and its evaluations. In turn, it means peace of mind for our customers with regard to the quality of the cables they source from us.

Expert tecHnical support

Our highly-qualified technical team is on hand to provide technical support with all aspects of cable selection, technical specification, regulatory requirements, and bespoke cable design and manufacture.

Complete Cable Solutions

We are a key contributor to projects in over 100 countries every year, adding value through comprehensive technical support, reliable logistics, innovative solutions, and a customer-centric approach.


The Cable Lab®

UKAS-accredited specialist cable testing laboratory

About Eland Cables

The Cable Lab® our in-house cable testing facility, is UKAS-accredited to ISO 17025, which is the single most important standard for calibration and testing laboratories around the world. Accreditation to this international standard demonstrates our laboratory's technical competence and the accuracy of its results.

For our customers, it means peace of mind. They can have full confidence in the quality of our products and can demonstrate due diligence in selecting their cable supplier.

Our customers can also rely on the Cable Lab's services for an independent, objective and comprehensive quality assessment of cables procured from third parties.