EN 50289-1-2:2001

Communication cables - Specifications for test methods - Part 1-2: Electrical test methods - DC resistance

This Part 1-2 of EN 50289 details the test methods to determine the DC resistance characteristics of the conductors of cables used in analogue and digital communication systems. These characteristics are described by the conductor resistance, loop resistance and resistance unbalance. It is to be read in conjunction with Part 1-1 of EN 50289, which contains essential provisions for its application.

Kommunikationskabel - Spezifikation für Prüfverfahren - Teil 1-2: Elektrische Prüfverfahren - Gleichstromwiderstand

Dieser Teil 1-2 der EN 50289 beschreibt die Prüfverfahren zur Bestimmung der Gleichstromeigenschaften der Leiter von Kabeln, welche in analogen und digitalen Kommunikationssystemen eingesetzt werden. Diese Eigenschaften werden durch den Leiterwiderstand, den Schleifenwiderstand und die Widerstands-unsymmetrie beschrieben. Dieser Teil ist in Verbindung mit EN 50289-1-1 zu lesen, in dem grundlegende Festlegungen zur Anwendung dieser Norm getroffen sind.

Câbles de communication - Spécifications des méthodes d'essai - Partie 1-2: Méthodes d'essais électriques - Résistance continue

La présente partie 1-2 de la Norme européenne EN 50289 donne en détail la méthode d'essai pour la détermination des caractéristiques de résistance continue des conducteurs des câbles utilisés dans les systèmes de communication analogiques et numériques. Ces caractéristiques sont données par la résistance du conducteur, la résistance de boucle et le déséquilibre de résistance. Elle doit être lue conjointement avec la partie 1-1 de la Norme européenne EN 50289 qui contient les dispositions essentielles pour cette application.

Communication cables - Specifications for test methods - Part 1-2: Electrical test methods - DC resistence

General Information

• Status: Published
• Publication Date: 20-May-2001
• ICS: 33.120.20 - Wires and symmetrical cables
• Technical Committee: CLC/TC 46X - Communication cables
• Drafting Committee: IEC/TC 46 - IEC_TC_46
• Parallel Committee: IEC/TC 46 - IEC_TC_46
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 30-Nov-2022
• Completion Date: 23-Sep-2025
• Mandate: M/212 - ICT - metallic and optical cables and cabling systems
• Ref Project: SIST EN 50289-1-2:2002 - Communication cables - Specifications for test methods -- Part 1-2: Electrical test methods - DC resistance

Relations

• Replaced By: EN 50289-1-2:2023 - Communication cables - Specifications for test methods - Part 1-2: Electrical test methods - DC resistance
• Effective Date: 22-Jan-2023

Overview

EN 50289-1-2:2001 is a European standard developed by CLC that specifies the electrical test methods for determining the DC resistance characteristics of communication cables. This standard applies primarily to conductors used in analogue and digital communication systems. It provides precise methods to measure the conductor resistance, loop resistance, and resistance unbalance of cable conductors to ensure their quality and performance.

This part (1-2) of the EN 50289 series complements Part 1-1, which details general provisions necessary for implementing these tests. Together, they ensure standardized and reliable testing procedures for communication cables critical in data transmission systems.

---

Key Topics

• Scope and Purpose
  Focuses on test methods to evaluate DC resistance in communication cables, essential for verifying cable performance and reliability in communication networks.

• Definitions

  • Resistance: Electrical DC resistance of a conductor, including the effects of twisting in finished pairs.
  • Loop resistance: The combined DC resistance of two conductors forming a loop, accounting for twisting effects.
  • Resistance unbalance: The percentage difference between resistances of two symmetrical conductors, crucial for minimizing signal degradation.

• Test Equipment Requirements
  Testing instruments must measure resistance within ±0.5% accuracy of expected values to ensure high-quality results.

• Test Sample Preparation
  Length of the cable under test (CUT) must be measured accurately within 1%, and cable ends should be prepared to reduce contact resistance, guaranteeing valid test outcomes.

• Testing Procedure

  • Connection setups for measuring conductor resistance, loop resistance, and resistance unbalance.
  • Current density during tests should not exceed 1 A/mm² to avoid heating effects.
  • Ambient temperature must be recorded during measurements.

• Results Expression and Temperature Compensation
  Resistance values are normalized to a reference length and corrected to a standard temperature of 20°C using a correction factor, particularly for copper conductors. This ensures consistency and comparability across tests.

• Test Report Requirements
  The report must include:

  • Temperature and cable length during testing.
  • Corrected resistance values.
  • Measurements of conductor resistance, loop resistance, and resistance unbalance.

---

Applications

EN 50289-1-2:2001 is highly valuable for:

• Cable Manufacturers
  Ensures production of communication cables with verified electrical resistance characteristics, optimizing signal integrity and cable performance.

• Quality Assurance Labs
  Enables consistent and accurate testing procedures that conform to European standards for communication cables.

• Infrastructure Providers and Installers
  Validates cable suitability for analogue and digital communications installations, reducing failure rates and improving network reliability.

• Telecommunications Industry
  Supports compliance with standard testing protocols, facilitating interoperable and high-quality communication infrastructure.

By accurately assessing DC resistance characteristics, this standard contributes to minimizing signal loss and interference in communication systems.

---

Related Standards

• EN 50289-1-1:2001 Communication cables - Specifications for test methods - General electrical test requirements: Provides foundational requirements for applying the Part 1-2 test methods and should be used in conjunction with EN 50289-1-2.

• EN 50290-1-2 Communication cables - Terms and definitions: Offers terminology essential for understanding testing procedures and interpreting results within EN 50289 series.

• Additional relevant standards in the EN 50289 series cover other electrical and mechanical tests for communication cables ensuring comprehensive quality assessment protocols.

---

Keywords: EN 50289-1-2:2001, communication cables, DC resistance test methods, conductor resistance, loop resistance, resistance unbalance, cable testing standards, electrical test methods, analogue communication cables, digital communication cables, cable quality assurance, CLC standards, European cable testing.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2002
Communication cables - Specifications for test methods - Part 1-2: Electrical test
methods - DC resistence
Communication cables - Specifications for test methods -- Part 1-2: Electrical test
methods - DC resistance
Kommunikationskabel - Spezifikation für Prüfverfahren -- Teil 1-2: Elektrische
Prüfverfahren - Gleichstromwiderstand
Câbles de communication - Spécifications des méthodes d'essai -- Partie 1-2: Méthodes
d'essais électriques - Résistance continue
Ta slovenski standard je istoveten z: EN 50289-1-2:2001
ICS:
33.120.20 äLFHLQVLPHWULþQLNDEOL Wires and symmetrical
cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50289-1-2
NORME EUROPÉENNE
EUROPÄISCHE NORM May 2001
ICS 33.120.20
English version
Communication cables -
Specifications for test methods
Part 1-2: Electrical test methods -
DC resistance
Câbles de communication - Kommunikationskabel -
Spécifications des méthodes d'essai Spezifikation für Prüfverfahren
Partie 1-2: Méthodes d'essais électriques - Teil 1-2: Elektrische Prüfverfahren -
Résistance continue Gleichstromwiderstand
This European Standard was approved by CENELEC on 2000-12-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any
other language made by translation under the responsibility of a CENELEC member into its own
language and notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50289-1-2:2001 E
Foreword
This European Standard was prepared by SC 46XC, Multicore, Multipair and Quad Data
communication cables, of Technical Committee CENELEC TC 46X, Communication cables.
The text of the draft was submitted to the formal vote and was approved by CENELEC as
EN 50289-1-2 on 2000-12-01.
The following dates were fixed:
- latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2002-01-01
- latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2004-01-01
This European Standard has been prepared under the European Mandate M/212 given to CENELEC by the
European Commission and the European Free Trade Association.
__________
– 3 – EN 50289-1-2:2001
Contents
Foreword . 2
1 Scope . 4
2 Normative references . 4
3 Definitions . 4
4 Test method. 4
4.1 Equipment .4
4.2 Test sample .5
4.3 Procedure .5
5 Expression of test results . 5
5.1 Expres
...