Valid

GB/T 7597-2026Method of sampling for oils used in electrical equipment (English PDF)

电力用油取样方法

Preview PDF

This is a limited preview

Buy now to download the full PDF (15 pages)

Need quotation for your management?

Get a formal quotation for GB/T 7597-2026 in 30 minutes.

Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

July 2, 2026

Implementation date

November 1, 2026

Scope

GB/T 7597-2026 is the English-translated version of 电力用油取样方法.

GB/T 7597-2026 is the Chinese national standard covering how oil is sampled from a transformer, a bushing or a switch — the point, the vessel, the purging, the exclusion of air and moisture, and the labelling, all of which decide whether the dissolved gas analysis that follows means anything.

A badly taken sample produces a confident wrong answer about the health of a transformer. It replaces GB/T 7597-2007 and takes effect on 1 November 2026. It was issued on 2 July 2026 and takes effect on 1 November 2026, replacing GB/T 7597-2007.

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.

Found what you need?

Document preview — GB/T 7597-2026

National Standard of the People's Republic of China

ICS: 75.100
Classification: E 38
Replacing: GB/T 7597-2007

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

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Sampling tools
5 Sampling points and sampling method
6 Transport and storage of the oil samples

3 Terms and definitions

4 Sampling tools

5 Sampling points and sampling method

6 Transport and storage of the oil samples

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 November 2026.

It replaces GB/T 7597-2007, which remains in force until that date.

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

Classification: ICS 75.100, CCS E 38.

3 Classification and status

GB/T 7597-2026 is classified under ICS 75.100, in the field of petroleum and related technologies. 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 E 38. 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.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Cited by

Editions of GB/T 7597

Edition	Title	Revision	Status
GB/T 7597-2026	Method of sampling for oils used in electrical equipment	current edition	Current
GB/T 7597-2007	Method of sampling for oils used in electrical equipment	previous edition	In force until 1 November 2026

This page sells the current edition, GB/T 7597-2026. Earlier editions are listed for reference only.

How to Download GB/T 7597-2026

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.