SAA HB 102-1997 (CJC 6-1997) PDF

Full title and description

SAA HB 102-1997 (CJC 6-1997) — Coordination of power and telecommunications — Low Frequency Induction (LFI): Application Guide to the LFI Code. This handbook provides guidance on the Code (CJC 5) for low frequency induction, covering the theory of LFI, calculation methods, selection of engineering solutions and mitigation measures, evaluation of contributory and ameliorative factors, worked examples, and field tests and measurements.

Abstract

This application guide explains mechanisms of low frequency induction from power lines into nearby telecommunications infrastructure, presents procedures for calculating induced voltages, gives criteria for selecting appropriate mitigation options, and describes field test and measurement techniques. Extensive appendices provide shielding factors, conductor and sheath resistance data, worked examples and practical test records to support engineering decisions.

General information

• Status: Current (handbook edition in force; incorporates Amendment 1:1998).
• Publication date: 1997 (published 11 May 1997); Amdt 1 issued 1998.
• Publisher: Standards Australia.
• ICS / categories: Electrical power transmission and distribution; Telecommunications; Electromagnetic compatibility — (e.g., ICS areas covering power transmission and distribution, telecommunications systems and EMC).
• Edition / version: HB 102:1997 (CJC 6) — Handbook, incorporating Amendment 1:1998.
• Number of pages: Typically listed as 85 pages in several product records (some listings show alternate page counts for packaged editions — vendors may list 85–94 pages).

Scope

The handbook is an application guide to the LFI Code (CJC 5 / SAA HB101-1997). It is intended to assist power system engineers, telecommunications engineers and planners in assessing and managing induced power-frequency voltages on telecommunications lines that run in proximity to overhead high-voltage power lines. The scope includes theoretical background, calculation procedures, selection of acceptable induced-voltage limits, evaluation of contributing factors, worked examples, and recommended field test and measurement procedures.

Key topics and requirements

• Theory and mechanism of low frequency induction (LFI) from power lines to metallic telecommunications conductors.
• Calculation procedures for induced voltages including mutual impedance, shielding factors, sheath resistance and earth characteristics.
• Selection of appropriate induced-voltage limits and engineering criteria for different categories of power lines and telecommunications services.
• Evaluation of contributory and ameliorative factors and guidance for choosing mitigation measures (separation, bonding/earthing practices, shielding, route selection, equipotential bonding, use of insulating devices).
• Worked examples with step-by-step calculations and a detailed example case.
• Field tests and measurement procedures, safety precautions, test circuits, interpretation of results and ancillary tests (soil resistivity, shielding factor determination).
• Extensive appendices with shielding factor tables, conductor/sheath resistance data, conversion charts, latent reduction factors and a fault-docket template for recording power earth faults.

Typical use and users

Used by power utility engineers, telecommunications network planners and contractors, consulting electrical engineers, standards committees, and regulators. Typical applications include design and route planning where overhead power lines run parallel to telecommunications cables, pre-construction assessments, mitigation design, field testing after installation, and post-fault investigations.

Related standards

Closely related to SAA HB 101-1997 (CJC 5) — the LFI Code (code of practice for mitigation of hazardous induced voltages). Also referenced by later standards and guidance on overhead line design and earthing, for example AS/NZS 7000 (overhead line design), AS 2067 (substations & high-voltage installations) and related telecommunication earthing/earth potential rise practice documents.

Keywords

low frequency induction, LFI, induced voltages, power-telecom coordination, shielding factor, sheath resistance, earth fault, field testing, mitigation, bonding, earthing, SAA HB 102, CJC 6

FAQ

Q: What is this standard?

A: SAA HB 102-1997 (CJC 6-1997) is a Standards Australia handbook titled "Coordination of power and telecommunications — Low Frequency Induction (LFI): Application Guide to the LFI Code" that provides practical guidance and worked examples supporting the LFI Code (CJC 5 / SAA HB101).

Q: What does it cover?

A: It covers the theory of LFI, calculation methods to estimate induced voltages, evaluation of factors affecting induction, selection of mitigation measures, detailed worked examples, and recommended field test and measurement procedures, supported by extensive appendices of data.

Q: Who typically uses it?

A: Power system and telecommunications engineers, utility planners, consultants, contractors performing route design or remediation where power lines and telecom lines run in proximity, and standards or regulatory staff referencing LFI practices.

Q: Is it current or superseded?

A: The handbook is published as HB 102:1997 and is commonly listed by standards providers as the current handbook edition; it incorporates Amendment 1 (1998). Users should confirm the current status with Standards Australia or an official distributor before relying on it for regulatory compliance.

Q: Is it part of a series?

A: Yes — it is part of a suite of coordination guidance on power and telecommunications and is an application guide companion to the LFI Code (SAA HB101:1997 / CJC 5). Other related handbooks address crossings, earthing examples and additional coordination topics.

Q: What are the key keywords?

A: Low frequency induction, induced voltages, shielding factor, sheath resistance, earthing/bonding, field testing, mitigation, SAA HB 102, LFI Code.