Standard No.:	DL/T 574-2010
English Name:	Guide to the Operation and the Maintenance of Tap-changers in the Transformer
Chinese Name:	变压器分接开关运行维修导则
Professional Classification:	DL    Professional Standard - Electricity
Issued by:	National Energy Administration
Issued on:	2010-05-01
Implemented on:	2010-10-1
Status:	superseded
Superseded by:	DL/T 574-2021 Guide for the operation and maintenance of tap-chargers in the power transformer
Superseded on:	2021-10-26
Superseding:	DL/T 574-1995 Guide to the Operation and the Maintenance of On-load Tap-changes
Language:	English
File Format:	PDF
Word Count:	43000 words
Price(USD):	1290.0
Delivery:	via email in 1~10 business day

1 Scope This standard specifies the requirements for acceptance, operation and maintenance of tap-changers (on-load tap-changers and off-circuit tap-changers) used for power transformers. This standard is applicable to resistance filtered oil-immersed and dry on-load tap-changers (hereinafter referred to as "on-load changers") and off-circuit tap-changers (hereinafter referred to as "off-circuit tap-changers") for power transformers with rated voltage 35(20)kV~750kV. 2 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to this standard.

Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 General Provisions 5 Installation and Acceptance 6 Operation Management 7 Maintenance Management 8 Reasons of Common Abnormal Conditions, Check and Treatment 9 Maintenance Process of Common On-load Tap Changer