GB/T 22072-2018Specifications and technical requirements for dry-type amorphous alloy core distribution transformers (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB/T 22072-2008 "dry amorphous alloy iron core distribution transformer technical parameters and requirements", and GB/T 22072- The main technical changes in.2008 are as follows.

--- Modifications to normative references (see Chapter 2);

--- Adjusted the no-load current and sound level of the 10kV voltage class (see 4.1 and 5.3, Chapter 4 of the.2008 edition)

And 5.11);

--- Increased performance parameters and sound level levels for products at 20kV and 35kV (see 4.2, 4.3 and 5.3).

1 Scope

This standard specifies the terms and definitions, performance parameters, technical requirements, inspection rules and methods of dry amorphous alloy iron core distribution transformers.

Marking, packaging, transportation and storage.

This standard applies to the system nominal voltage of 6kV, 10kV, 20kV and 35kV, rated frequency is 50Hz, rated capacity is 30kVA~2500kVA, three-phase dry amorphous alloy core non-excitation voltage regulating distribution transformer used indoors (hereinafter referred to as "variable voltage" "").

For other rated capacity products, please refer to the use of this standard.

This standard does not apply to inflatable transformers.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 191 packaging storage and transportation icon

GB/T 1094.1 Power transformers - Part 1. General

GB/T 1094.10 Power transformers - Part 10. Sound level determination

GB/T 1094.11 Power transformers - Part 11. Dry transformers

GB/T 1094.12 Power transformers - Part 12. Load guides for dry power transformers

GB/T 2828.1. Sampling procedures for sampling by sampling - Part 1 . Batch-to-batch sampling plan, searched by AQL

GB/T 2900.95 Electrical terminology transformers, voltage regulators and reactors

GB/T 5273 high-voltage electrical terminal size standardization

GB/T 5465.2 Graphical symbols for electrical equipment - Part 2. Graphical symbols

JB/T 501 Power Transformer Test Guide

3 Terms and definitions

The following terms and definitions as defined in GB/T 1094.1, GB/T 1094.11 and GB/T 2900.95 apply to this document.