GB 8965.4-2022Protective clothing—Arc flash protective clothing (English PDF)

Foreword

This document is drafted in accordance with the provisions of GB/T 1.1-2020 "Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents".

This document is Part 4 of GB 8965 "Protective clothing". GB 8965 has released the following parts.

- GB 8965.1-2020 Protective clothing - Flame retardant protective clothing;

- GB 8965.2-2022 Protective clothing - Flame-retardant protection - Part 2: Protective clothing for welders;

- GB 8965.3-2022 Protective clothing - Clothing to protect against molten metal splash;

- GB 8965.4-2022 Protective clothing - Arc flash protective clothing.

1 Scope

This document specifies the requirements, marking and packaging of arc flash protective clothing for electrical work and related workplaces; describes test methods.

This document is applicable to protective clothing, that is used to protect against arc flash instant energy and thermal injury, in electrical operations and related workplaces.

This document does not apply to insulating protective clothing, electromagnetic protective clothing, shielding clothing for live work in electrical work and related places.

This document does not include personal arc flash protection supplies, such as arc protection masks, arc protection hoods, arc protection gloves, arc protection shoe covers.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, for dated reference documents, only the version corresponding to the date applies to this document; for undated reference documents, the latest version (including all amendments) applies to this document.

GB/T 2912.1 Textiles - Determination of formaldehyde - Part 1: Free and hydrolyzed formaldehyde (water extraction method)

GB/T 3291.1 Textiles - Terms of textile material properties and test - Part 1: Fiber and yarn

GB/T 3291.2 Textiles - Terms of textiles material properties and test - Part 2: Fibric

GB/T 3291.3 Textiles - Terms of textile material properties and test - Part 3: General

GB/T 3916-2013 Textiles - Yarns from packages - Determination of single-end breaking force and elongation at break using constant rate of extension (CRE) tester

GB/T 3917.3 Textiles - Tear properties of fabrics - Part 3: Determination of tear force of trapezoid-shaped test specimens

GB/T 3920 Textiles - Tests for color fastness - Color fastness to rubbing

3 Terms and definitions

The terms and definitions as defined in GB/T 12903, GB/T 3291.1 ~ 3291.3, GB 8965.1-2020, as well as the following terms and definitions, apply to this document.

4 Requirements

5 Test methods

5.1 The arc thermal performance value and breakopen threshold of single-layer or multi-layer arc flash protective clothing fabrics shall be tested, in accordance with the provisions of Appendix B. During the testing, the arc thermal performance value and breakopen threshold energy of the fabric shall be tested at the same time.

5.2 The unit area mass of arc flash protective clothing fabrics is tested according to method 3 in GB/T 4669-2008.

5.5 The tearing strength of the fabric is tested according to GB/T 3917.3. If the arc flash protective clothing fabric is composed of multiple layers, only the tearing strength of the outermost layer of fabric is tested.

5.6 The bursting strength of the fabric is tested according to the requirements of GB/T 7742.1; the test area is 7.3 cm².

5.7 The moisture permeability of fabrics is tested in accordance with GB/T 12704.1.

5.8 The pilling test of woven fabrics shall be tested in accordance with GB/T 4802.1; the pilling test of knitted fabrics shall be tested in accordance with GB/T 4802.3.

5.9 The dimensional change rate and relaxed dimensional change rate of the fabric are tested in accordance with the requirements of GB/T 8628 and GB/T 8630, using the 4 N program in GB/T 8629-2017.

5.10 The thermal stability of fabrics and linings is tested, in accordance with Appendix A of GB 8965.1-2020, at a temperature of (180 ± 2) °C.

5.11 The color fastness of fabrics to soaping is tested, in accordance with GB/T 3921.

5.16 The decomposable carcinogenic aromatic amine dyes in fabrics and linings are tested, according to the requirements of GB/T 17592 and GB/T 23344.

5.17 The odor of fabrics and linings shall be tested, according to the provisions of 6.7 in GB 18401-2010.

5.20 For the seam breaking strength of arc flash protective clothing, it is tested according to the method specified in GB/T 21294 for woven fabric clothing. The seam strength of clothing made of knitted fabric materials is tested, according to the method specified in FZ/T 70007. The test locations are the crotch seam and armpit of the pants; take a sample from each part.

6 Marking and packaging