GB/T 2315-2017Specified failure load series and coupling dimensions for electric power fittings (English PDF)

Foreword

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

This standard replaces GB/T 2315-2008 "power fittings nominal breaking load series and connection type size", and GB/T 2315-2008 compared to the main technical changes are as follows.

--- Added "Groove connection" "ring connection" "ball and socket connection" definition (see 3.2 ~ 3.4);

--- The nominal damage load increased from 13 levels to 18 levels, and lists the nominal damage load corresponding to the mark and so on (See Chapter 4, Chapter 4 of the 2008 edition);

--- Increasing the size of the groove connection size, according to the new markings listed bolt aperture requirements (see 5.1.1, 2008 edition 5.1.1);

--- The tensile strength of the material marked as 55 and above shall be changed from ">=500MPa" to ">=650MPa" (see 5.1.1, 2008 edition 5.1.1);

--- Groove-connected bolts should be consistent with the standard from "GB/T 3098.1" to "DL/T 764" (see 5.2.1, 2008 edition 5.1.2);

--- Added the requirement of "GQ" mark after "640kN and above nominal breaking load fittings" (see 5.1.3, 5.2.2 and 5.3.3);

--- Increasing the groove connection, ring connection size deviation requirements (see 5.1.4,5.2.3);

--- Increased the size of the ring connection range, according to the new label lists the ring diameter and other requirements (see 5.2.1, 2008 version 5.2.1);

--- Modify the standard of ball joint connection size from "GB/T 4056" to "GB/T 4056 and DL/T 1579" (see 5.3.2, 2008 edition of 5.3.1).

1 Scope

This standard specifies the power fittings nominal sabotage load series and groove, ring and ball socket connection size.

This standard applies to overhead power line power fittings (hereinafter referred to as fittings).

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.

GB/T 2314 electrical fittings general technical conditions

GB/T 2317.1 Test methods for electrical fittings - Part 1: Mechanical tests

GB/T 4056 insulator string ball socket connection size

DL/T 764 power fittings with pin hole hexagon head bolts

DL/T 1579 rod suspension composite insulator end fittings technical specifications

3 Terms and definitions

The following terms and definitions apply to this document.

4 Nominal damage load series

Nominal damage load series is divided into 18 levels, the marking, bolt diameter and tensile strength of materials in Table 1.