K41 - Transformer

GB/Z 1094.20-2026 in English

Power transformers—Part 20：Energy efficiency

VALID

Issued on:2026-07-02 | Implemented on:2026-07-02

GB/T 25438-2026 in English

Technical parameters and requirements for three-phase oil-immersed tridimensional wound core power transformers

TO BE VALID

Issued on:2026-07-02 | Implemented on:2027-02-01

GB/T 46985.3-2025 in English

Safety of power converters for use in photovoltaic power systems—Part 3:Particular requirements for electronic devices in combination with photovoltaic elements

VALID

Issued on:2025-12-31 | Implemented on:2026-04-01

GB/T 10230.2-2025 in English

Tap-changers—Part 2：Application guidelines

VALID

Issued on:2025-10-31 | Implemented on:2026-05-01

DL/T 462-2025 in English

Technical Conditions for Series Reactors Used in High Voltage Shunt Capacitor Banks

VALID

Issued on:2025-06-30 | Implemented on:2025-12-30

DB54/T 0480-2025 in English

VALID

Issued on:2025-06-20 | Implemented on:2025-07-20

JB/T 3837-2025 in English

Identification method of transformer's product type

VALID

Issued on:2025-05-09 | Implemented on:2025-11-01

JB/T 8314-2025 in English

Test guide for tap-changers

VALID

Issued on:2025-05-09 | Implemented on:2025-11-01

JB/T 8749.2-2025 in English

Voltage regulators — Part 2：Induction voltage regulators

VALID

Issued on:2025-05-09 | Implemented on:2025-11-01

JB/T 8749.3-2025 in English

Voltage regulators — Part 3：Contact voltage regulators

VALID

Issued on:2025-05-09 | Implemented on:2025-11-01