GB/T 20626.2-2018Specific environmental condition—Electrical and electronic products for plateau—Part 2: Selective types and testing specification (English PDF)

Foreword

GB/T 20626 "Special environmental conditions plateau electrical and electronic products" is divided into the following parts.

--- Part 1. General technical requirements;

--- Part 2. Selection and inspection specifications;

--- Part 3. Protection requirements for lightning, pollution, condensation.

This part is the second part of GB/T 20626.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This part replaces GB/T 20626.2-2006 "Special environmental conditions, plateau electrical and electronic products - Part 2. Selection and inspection Fan.

Compared with GB/T 20626.2-2006, the main technical changes in this section are as follows.

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

--- Revised the scope of application (see Chapter 1, Chapter 1 of the 2006 edition);

--- Normative reference documents, deleted GB 1094.3, GB/T 2900.1, GB/T 2900.8, GB/T 2900.12, GB/T 2900.16,

GB/T 2900.18, GB/T 2900.19, GB/T 2900.20, GB/T 2900.25, GB/T 2900.32, GB/T 2900.33,

GB 7251 (all parts), GB/T 20840.2, GB/T 20840.3, JB/T 8439" (see Chapter 2 of the 2006 edition), Added GB/T 2900 (all parts), GB/T 20626.3 (see Chapter 2);

--- Revised guidelines for terms and definitions (see Chapter 3, Chapter 3 of the 2006 edition);

--- Revised the environmental conditions of the plateau (see Chapter 4, Chapter 4 of the 2006 edition);

--- Modified external insulation (see 5.2.2, 5.2.2 of the 2006 edition);

--- Modified the action characteristics (see 5.2.7, 5.2.7 of the 2006 version);

--- Increased requirements for lightning, condensation and contamination (see 5.2.14);

--- Modified the type inspection items for high-voltage electrical appliances, high-voltage switchgear and low-voltage electrical appliances (see Table 1, Table 1 of the 2006 edition);

--- Revised the routine inspection project (see Table 2, Table 2 of the 2006 edition);

--- Revised the type inspection requirements (see 6.5.1, 6.4.1 of the 2006 edition);

--- Revised the routine inspection requirements (see 6.5.2, 6.4.2 of the 2006 edition).

1 Scope

This part of GB/T 20626 specifies the selection requirements, inspection specifications, marking, packaging and transportation of electrical and electronic products under high altitude environmental conditions. Loss and storage.

This section applies to high and low voltage electrical and electronic products used in altitudes ranging from 1000m to 5000m above sea level.

The low-voltage electrical appliances and low-voltage switchgear and control equipment involved in this part are suitable for altitudes above 2000m to 5000m. area.

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 2900 (all parts)

GB/T 14597 climatic and environmental conditions of electrical products at different altitudes

GB/T 20626.1 Special environmental conditions - Plateau electric and electronic products - Part 1. General technical requirements

GB/T 20626.3 Environmental conditions - Part 3. Electrical and electronic products - Part 3. Protection requirements for lightning, s.

3 Terms and definitions

The terms and definitions defined in GB/T 2900 (all parts) and GB/T 20626.1 apply to this document.

4 Plateau environmental conditions parameters

The parameters of the plateau environmental conditions are in accordance with GB/T 14597.

See Appendix A for the main effects of high altitude environmental conditions on electrical and electronic products.

Refer to Appendix B for the protection requirements of high-altitude environmental conditions for electrical and electronic products.

5 Selection requirements