GB/T 15579.6-2026Arc welding equipment - Part 6: Limited duty equipment (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

Drafting.

This document is Part 6 of GB/T 15579 "Arc Welding Equipment". GB/T 15579 has already published the following parts.

---Part 1: Welding Power Sources;

---Part 3: Arc initiation and stabilization devices;

---Part 4: Periodic Inspections and Tests;

---Part 5: Wire Feeding Device;

---Part 6: Load-limiting devices;

---Part 7: Welding Torch (Gun);

---Part 8: Gas Circulation Devices for Welding and Plasma Cutting Systems;

---Part 9: Installation and Use;

---Part 10: Electromagnetic Compatibility (EMC) Requirements;

---Part 11: Welding Pliers;

---Part 12: Welding Cable Coupling Devices;

---Part 13: Welding Clamps;

---Part 14: Calibration, Validation and Conformity Testing.

This document supersedes GB/T 15579.6-2018 "Arc Welding Equipment - Part 6: Load Limiting Equipment", and is consistent with GB/T 15579.6-Compared to 2018, aside from structural adjustments and editorial changes, the main technical changes are as follows.

a) The content related to "isolation between input circuit and welding circuit" has been deleted (see 6.3.2 in the 2018 version);

b) Added explanation of the indexing sequence number for U1 (see Figure 2);

c) The test conditions for the temperature measurement method have been changed (see 7.3.1, 2018 version of 7.3.1);

d) The temperature limits classified by insulation class have been changed (see Table 1, 2018 edition);

e) The overload experiment has been removed (see 10.4 in the 2018 version);

g) The requirements for the control loop have been changed (see Chapter 13, Chapter 13 in the 2018 edition);

h) The principles for the composition of the nameplate have been changed (see Figure 5, Figure 5 in the 2018 version);

i) Added an example of welding power source symbol (optional) (see 17.3).

This document is modified to adopt IEC 60974-6:2015 "Arc welding equipment - Part 6: Equipment for limiting load".

The technical differences between this document and IEC 60974-6:2015, and the reasons therefor, are as follows.

---Since IEC 60974-1:2012 has been superseded by IEC 60974-1:2021, the references required in this document have been changed.

GB/T 15579.1-2024(IEC 60974-1:2021,IDT);

---Since IEC 60974-5:2013 has been superseded by IEC 60974-5:2019, the references required in this document have been changed.

GB/T 15579.5-2023(IEC 60974-5:2019,IDT);

---Since IEC 60974-7:2013 has been superseded by IEC 60974-7:2019, the references required in this document have been changed.

GB/T 15579.7-2023 (IEC 60974-7:2019, IDT).

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed by the China Electrical Equipment Industry Association.

This document is under the jurisdiction of the National Technical Committee on Standardization of Welding Machines (SAC/TC70).

Introduction

Arc welding equipment mainly includes power supplies powered by the power grid or battery packs, as well as power supplies used for arc welding and similar processes driven by mechanical equipment (such as arc welding).

Welding power sources and plasma cutting systems, etc.), auxiliary equipment, welding accessories, etc.

GB/T 15579 "Arc Welding Equipment" specifies the safety requirements, performance requirements, and electromagnetic compatibility requirements for arc welding equipment, consisting of 14 parts.

composition.

---Part 1: Welding Power Sources. The purpose is to specify the safety and performance requirements for welding power sources.

---Part 2: Liquid Cooling Systems. The purpose is to specify the safety requirements and structural specifications for liquid cooling systems of auxiliary equipment such as welding torches (guns).

Structural requirements.

---Part 3: Arc Ignition and Stabilization Devices. The purpose is to specify the safety requirements for auxiliary equipment arc ignition and stabilization devices.

---Part 4: Periodic Inspections and Tests. The purpose is to specify the procedures for periodic inspections and tests of welding power sources and to ensure post-repair maintenance.

Electrical safety requirements.

---Part 5: Wire Feeding Device. The purpose is to specify the safety and performance requirements for wire feeding devices used in welding accessories.

---Part 6: Equipment for Limiting Loads. The purpose is to specify the connection to a single-phase common low-voltage power supply system for use by non-specialists.

The design specifies the safety and performance requirements for the arc welding and cutting power supply and auxiliary equipment used under limited load conditions.

---Part 7: Welding Torch (Gun). The purpose is to specify the safety and structural requirements for welding accessories, specifically welding torches (guns).

---Part 8: Gas Circulation System for Welding and Plasma Cutting Systems. The purpose is to specify the flammable gas or oxygen supply for auxiliary equipment.

---Part 9: Installation and Use. This section specifies the requirements for the installation and use of arc welding equipment.

---Part 10: Electromagnetic Compatibility (EMC) Requirements. The purpose is to specify the electromagnetic compatibility requirements for arc welding power supplies and auxiliary equipment.

---Part 11: Welding clamps. The purpose is to specify the safety and performance requirements for welding clamps, a welding accessory.

---Part 12: Welding Cable Couplers. The purpose is to specify the safety requirements and performance of welding cable couplers for welding accessories.

Require.

---Part 13: Welding Clamps. The purpose is to specify the safety and performance requirements for welding clamps, a welding accessory.

---Part 14: Calibration, Qualification, and Conformity Testing. The purpose is to specify the qualification requirements for arc welding and its external monitoring equipment, and the arc...

Requirements for actual verification and operation of welding equipment.

Arc Welding Equipment Part 6: Load Limiting Equipment

1 Scope

This document specifies the arc welding and cutting procedures for limited loads connected to a single-phase common low-voltage power supply system and designed for use by non-professionals.

Safety and performance requirements for power supplies and auxiliary devices, and power supplies for mechanical equipment with an output power not exceeding 7.5kVA.

Note 1.This type of equipment is typically used by non-professionals in residential areas.

This document does not apply to the following arc welding and cutting power sources.

---Equipped with arc initiation and arc stabilization devices;

---Equipped with a liquid cooling system;

---Equipped with a pneumatic system;

---Three-phase input power supply;

---Power supplies for industrial and professional use only.

---Applications requiring mechanical guidance;

---Submerged arc welding;

---Plasma air gouging;

---Plasma welding.

The above situations are specified in other parts of GB/T 15579.

Note 2.Requirements for power supplies, wire feeders, welding torches (guns), and welding clamps for industrial and professional use are specified in IEC 60974-1, IEC 60974-5, and IEC 60974-7, respectively.

And IEC 60974-11.

Note 3.This document does not include electromagnetic compatibility (EMC) requirements, which can be found in IEC 60974-10.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 15579.1-2024 Arc welding equipment - Part 1: Welding power sources (IEC 60974-1:2021, IDT) GB/T 15579.5-2023 Arc welding equipment - Part 5: Wire feeders (IEC 60974-5:2019, IDT) GB/T 15579.7-2023 Arc welding equipment - Part 7: Welding torches (guns) (IEC 60974-7:2019, IDT) GB/T 16842-2016 Test apparatus for testing protection of people and equipment by enclosures (IEC 61032:1997, IDT) ISO 2503 Gas welding equipment - Cylinder pressure regulators and pressure regulators with flow meters for welding, cutting and related processes.

300 bar (30 MPa)

Note. GB/T 7899-2006 Gas cylinder pressure regulators for welding, cutting and similar processes (ISO 2503:1998, MOD) (sources) Note. GB/T 15579.1-2024 Arc welding equipment - Part 1: Welding power sources (IEC 60974-1:2021.IDT)