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GB/T 35697-2026General technical specification for on-line monitoring devices on overhead transmission lines (English PDF)

架空输电线路在线监测装置通用技术规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

July 2, 2026

Implementation date

February 1, 2027

Scope

GB/T 35697-2026 is the English-translated version of 架空输电线路在线监测装置通用技术规范.

GB/T 35697-2026 is the Chinese national standard covering the devices that monitor an overhead transmission line in service — conductor temperature and sag, ice and wind loading, insulator leakage, tower tilt and the video that shows what is actually happening on a span nobody can reach quickly.

It fixes the functions, the environmental and electrical requirements, the power supply and communication, the data and the tests. It replaces GB/T 35697-2017, and at 37,500 words it is the reference document for the whole class of equipment.

It was issued on 2 July 2026 and takes effect on 1 February 2027, replacing GB/T 35697-2017.

This page is published from the official record of the 2026 edition; the clause text of a standard this recent is not yet in circulation, and the figures, limits and tables it contains are those of the document itself, delivered in full with the English translation.

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Document preview — GB/T 35697-2026

National Standard of the People's Republic of China

ICS: 29.240.20
Classification: K 40
Replacing: GB/T 35697-2017

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and composition
5 Operating conditions
6 Technical requirements
7 Test methods and decision criteria
8 Inspection rules
9 Marking, packaging, transport and storage
Annex A (informative) Field application scenarios and configuration principles of typical monitoring devices
Annex B (normative) Main performance indexes of typical monitoring devices
Annex C (normative) Technical requirements for the power supply
Annex D (informative) Power consumption requirements for the monitoring device
Annex E (normative) Test method for the performance index (accuracy)
Annex F (informative) Installation, commissioning and acceptance

3 Terms and definitions

4 Classification and composition

5 Operating conditions

6 Technical requirements

7 Test methods and decision criteria

8 Inspection rules

9 Marking, packaging, transport and storage

Foreword

This document was issued on 2 July 2026 by the State Administration for Market Regulation and the Standardization Administration of the People's Republic of China, and takes effect on 1 February 2027.

It replaces GB/T 35697-2017, which remains in force until that date.

The document is under the responsibility of the China Electricity Council.

Classification: ICS 29.240.20, CCS K 40.

3 Classification and status

GB/T 35697-2026 is classified under ICS 29.240.20, in the field of electrical engineering. ICS is the International Classification for Standards, the same scheme used by ISO and by the national bodies of most countries, which is what allows a Chinese standard to be placed beside its foreign counterparts on subject rather than on number.

Its Chinese Standard Classification code is CCS K 40. CCS is the domestic scheme, a letter for the sector and two digits for the subject within it, and it is the code by which the standard is filed and searched in China.

The GB/T prefix marks a recommended national standard. It is not, in itself, law: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it. In practice that covers most of the cases in which it will be read — a purchase specification, an inspection agreement or a certification scheme.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 62 pages — is available in the English PDF.

Referenced standards

Cited by

GB/T 25095-2020Monitoring system of operating status for overhead transmission lines

Editions of GB/T 35697

Edition	Title	Revision	Status
GB/T 35697-2026	General technical specification for on-line monitoring devices on overhead transmission lines	current edition	Current
GB/T 35697-2017	General technical specification for on-line monitoring devices on overhead transmission lines	previous edition	In force until 1 February 2027

This page sells the current edition, GB/T 35697-2026. Earlier editions are listed for reference only.

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