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JB/T 8740-2025Electrochemical rectifying equipment (English PDF)

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Issued by

Ministry of Industry and Information Technology

Level / Type

National · Recommended

Issue date

July 2, 2025

Implementation date

February 1, 2026

Scope

JB/T 8740-2025 (Electrochemical rectifying equipment) is available as an English-translated PDF.

JB/T 8740-2025 — This standard specifies the model, ratings, and technical requirements of rectifier equipment for electrochemical applications. It describes the corresponding test methods and specifies inspection rules, tolerances, marking, packaging, transportation, and storage.

This standard applies to the manufacture of semiconductor diode rectifier equipment, thyristor rectifier equipment, and high-frequency switching rectifier equipment used as DC power supplies for electrolysis in the electrochemical industry.

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Document preview — JB/T 8740-2025

National Standard of the People's Republic of China

ICS: 29.200
Classification: K 81
Replacing: JB/T 8740-1998

Issued by: Ministry of Industry and Information Technology

What this standard covers1
Document data2

What this standard covers

This standard specifies the model, ratings, and technical requirements of rectifier equipment for electrochemical applications. It describes the corresponding test methods and specifies inspection rules, tolerances, marking, packaging, transportation, and storage. This standard applies to the manufacture of semiconductor diode rectifier equipment, thyristor rectifier equipment, and high-frequency switching rectifier equipment used as DC power supplies for electrolysis in the electrochemical industry. It is used as a reference for the manufacture of rectifier equipment for graphitized electric furnaces and silicon carbide electric furnaces with similar load characteristics.

Document data

International classification (ICS): 29.200.

Chinese classification (CCS): K81.

Supersedes the earlier edition JB/T 8740-1998.

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

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