T/ZZB 2592-2021 On-load adjustable capacity dry-type transformer
T/ZZB 2592-2021 On-load adjustable capacity dry-type transformer
Basic Information
Scope
Main technical content: This document specifies the terms and definitions, product models, basic requirements, technical requirements, test methods, inspection rules, nameplates, markings, packaging, transportation and storage, quality commitments, etc. of on-load tap-changer dry-type transformers (hereinafter referred to as transformers). This document is applicable to transformers that use electrical steel strip; with a voltage rating of 10 kV and a rated frequency of 50 Hz; conversion types including "Dy (Yy) conversion", "Dy (Yz) conversion", and "Dy (Dy) conversion"; rated capacities ranging from (200-630) kVA and (50-200) kVA for synchronous switching; and three-phase on-load tap-changer dry-type transformers for indoor use. Products with other conversion types or capacities can be implemented with reference to this document.