GB6830-2025

The tolerable limits of danger on telecommunication lines from power lines

电信线路遭受强电线路危险影响的容许值

GB 6830-2025 é uma norma nacional chinesa obrigatória que entrará em vigor: The tolerable limits of danger on telecommunication lines from power lines. Setor: Eletrônicos. Foco: Segurança de produtos. Entrada em vigor: 1 de nov. de 2026.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard applies to the danger effects on telecommunication lines caused by adjacent power lines, including AC power lines and AC electrified railway contact networks. It specifically covers scenarios involving fault states (such as single-phase short circuits to ground) and normal operating states of these power systems. Engineers must apply this standard when designing or assessing the proximity between high-voltage power infrastructure and telecommunication cables or optical fibers.

Requisitos técnicos

This standard defines the tolerable limits for danger arising from three primary coupling mechanisms: capacitive coupling, inductive coupling, and resistive coupling. For capacitive coupling, it specifies the maximum allowable current through the human body when touching telecommunication lines during specific power line faults or normal operations. For inductive coupling, it sets magnetic induction voltage limits for both telecommunication cables and optical cables. These limits vary based on the power line's state (fault vs. normal) and the cable's configuration (e.g., presence of insulation transformers, surge protectors, or remote feeding). Compliance requires ensuring that induced voltages and currents do not exceed the defined thresholds to prevent equipment damage and human injury. Additionally, the standard outlines how to evaluate combined effects when both inductive and resistive couplings occur simultaneously.

Métodos de ensaio

The standard outlines evaluation procedures rather than specific laboratory tests. It involves calculating induced longitudinal electromotive force and ground potential rise based on the electrical and physical parameters of the power lines and telecommunication lines. Engineers must calculate the resultant effects of simultaneous inductive and resistive coupling using the square root of the sum of squares method. Verification involves comparing these calculated coupling values against the specified tolerable limits.

Perguntas frequentes

What products and systems are regulated under GB 6830-2025?

This standard applies to power lines (such as AC power lines and AC electrified railway contact networks) and their potential danger effects on adjacent telecommunication lines (including buried/overhead cables and optical cables). It specifically evaluates danger during power line fault states and normal operating states.

Are there any major updates from the previous version of GB 6830?

Yes, the 2025 version is a mandatory revision replacing GB 6830-1986. Key updates include the addition of new terms (like electrical railway overhead contact system), the addition of tolerable limits for optical cable lines, the inclusion of safety voltage limits based on fault duration, and the removal of specific protection measures previously included in the 1986 version.

How does GB 6830-2025 differ from international standards?

GB 6830-2025 is a national standard specifically tailored for the Chinese infrastructure context, defining danger effect limits between domestic power lines and telecommunication lines. While it shares conceptual similarities with international electromagnetic compatibility (EMC) and safety standards, engineers must comply with this specific GB standard for local projects. Always verify local compliance requirements against this standard directly.

The summary above provides a high-level overview of GB 6830-2025. To ensure complete compliance for your telecommunication or power infrastructure projects entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 6830-2025 today to access all detailed parameter tables, formulas, and testing procedures.

Indicações de aplicabilidade

Tipo: Segurança
CCS: P30
ICS: 91.120.40
Órgão competente: Ministry of Industry and Information Technology
Comitê técnico: National Technical Committee on Telecommunications of Standardization Administration of China

Relações

Substitui:GB 6830-1986 (Vigente)