GB/T 20626.1-2017Specific environmental condition—Electric and electronic products for plateau—Part 1:General technical requirements (English PDF)

Foreword

GB/T 20626 "special environmental conditions plateau electrical and electronic products" is divided into three parts.

--- Part 1. General technical requirements;

--- Part 2. Selection and inspection specifications;

--- Part 3. Lightning, contamination, condensation protection requirements.

This section GB/T 20626 Part 1.

This section drafted in accordance with GB/T 1.1-2009 given rules.

This Part replaces GB/T 20626.1-2006 "Special Environmental Conditions Plateau Electrical and Electronic Products Part 1: General technical requirements Seeking ", and GB/T 20626.1-2006 compared to the main technical changes are as follows.

--- Remove the introduction (see the 2006 edition of the introduction);

--- The definition of "regular electrical and electronic products" has been modified (see 3.1, 2006 version 3.1);

--- The definition of "altitude classification" has been modified (see 3.3,2006 version 3.3)

--- Delete 5.2 (see the 2006 version of Chapter 5);

--- Deleted 0m elevation clearances altitude correction factor (see Table 2);

--- Increasing the formula for altitude correction factor, the frequency withstand voltage and impact withstand voltage of Table 3 altitude correction coefficient values The amendment (see formula (1) and Table 3);

--- Increased 2500m, 3500m, 4500m altitude power frequency withstand voltage and impact withstand voltage altitude correction coefficient value (see table 3);

--- Removed 8.1.2 and 8.1.3 (see the 2006 version of Chapter 8).

1 Scope

GB/T 20626 provisions of this part of the high altitude environmental conditions of electrical and electronic products of the plateau environmental conditions and atmospheric parameters of the atmosphere Pieces, technical requirements, testing, marking, packaging, transportation and storage.

This section applies to altitude above 1000m to 5000m plateau areas using high and low voltage electrical and electronic products.

This section refers to the low-voltage electrical equipment and low-voltage switchgear and control equipment for the altitude of 2000m above to 5000m high The original area.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document.

Electrotechnical terminology - High voltage test techniques and insulation coordination GB/T 2900.19-1994

GB/T 11804 Environmental conditions for electrical and electronic products terms

Climatic and Environmental Conditions of Elevators at Different Elevations GB/T 14597-2010

GB/T 20626.3 Special environmental conditions Highland Electrical and Electronic Products Part 3: Thunder and lightning, contamination, condensation protection requirements

3 Terms and definitions

GB/T 11804 defined and the following terms and definitions apply to this document.

4 Plateau environmental conditions parameters and standard atmospheric conditions