GB/T 4706.74-2024Safety of household and similar electrical appliances - Part 74: Particular requirements for sewing machines (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document is part 74 of GB/T 4706 "Safety of Household and Similar Electrical Appliances". GB/T 4706 has been published as follows part.

--- Part 1: General requirements;

--- Part 2: Particular requirements for electric irons;

--- Part 121: Particular requirements for professional ice cream machines.

This document replaces GB 4706.74-2008 "Particular requirements for safety of household and similar electrical appliances - sewing machines" and Compared with GB 4706.74-2008, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

--- Changed the scope and adjusted the degree of lack of capability (see Chapter 1, Chapter 1 of the 2008 edition);

--- Changed the "light" logo (see 7.1, 7.1 of the 2008 edition);

--- Changed the specifications of sheathed flexible cords (see 25.7, 25.7 of the 2008 edition).

This document is equivalent to IEC 60335-2-28:2008 "Safety of Household and Similar Electrical Appliances Part 2-28.Special Requirements for Sewing Machines" Require".

The following minimal editorial changes were made to this document.

--- The standard name was changed to "Safety of Household and Similar Electrical Appliances Part 74: Particular Requirements for Sewing Machines" to enhance the standard system coordination.

Introduction

GB/T 4706 "Safety of Household and Similar Electrical Appliances" adopts most of IEC 60335.On this basis, GB/T 4706 refers to the structure of IEC 60335 is divided into several parts, consisting of general requirements and special requirements. Part 1 is general requirements, and the other parts are for products covered by special requirements, their safety requirements are general requirements used in combination with the special requirements.

The requirements include supplements and modifications to the corresponding clauses in the general requirements to provide complete requirements for each product.

This document is the protection requirements for electrical, mechanical, thermal, fire and radiation risks when the appliance is used normally in accordance with the instructions.

This document also covers abnormal conditions that may occur during use and considers how electromagnetic interference may affect the safe operation of the equipment.

This document has taken into account the requirements specified in GB/T 16895 "Low Voltage Electrical Installations". The appliance is connected to the power supply in accordance with the electrical wiring rules.

requirements are coordinated.

If multiple functions of an appliance involve other parts of GB/T 4706, the other parts shall apply to the appliance separately as long as it is reasonable.

Each function. If applicable, consider the impact of one function on other functions.

When no additional requirements are given in other parts for hazards already included in this document, GB/T 4706.1 applies.

GB/T 4706 is a standard covering appliance safety and takes precedence over general standards/horizontal standards covering the same subject.

This document is used in conjunction with GB/T 4706.1-2024 "Safety of Household and Similar Electrical Appliances Part 1: General Requirements".

The part marked "applicable" in the document indicates that GB/T 4706.1-2024 "Safety of Household and Similar Electrical Appliances - Part 1: General Requirements" the corresponding clauses in the "Requirements" shall apply to this document; for the parts marked "replace" in this document, the clauses in this document shall prevail;

The "Add" part indicates that in addition to complying with the corresponding clauses in GB/T 4706.1-2024, the additional clauses in this document must also be complied with.

Clause; The part marked "modified" in this document indicates that the corresponding clauses of GB/T 4706.1-2024 are modified.

Safety of household and similar electrical appliances Part 74.

Special requirements for sewing machines

1 Scope

This chapter of GB/T 4706.1-2024 is replaced by the following.

This document specifies the safety requirements for electric sewing machines.

This document applies to household and similar appliances with a rated voltage not exceeding 250V for single-phase appliances and 480V for other appliances.

Electric sewing machine.

Overlock machines and motorized components are also within the scope of this document.

Appliances not intended for normal household use but which may nevertheless present a hazard to the public also fall within the scope of this document.

Sewing machines operated by non-professionals in a light industrial environment.

As far as is practical, the common hazards presented by the various appliances covered by this document are those that are present in the home and its surroundings.

However, in general, this document does not consider.

---The following groups (including children).

- due to physical, sensory or mental impairment; or - Due to lack of experience and knowledge;

Conditions that render them incapable of using the appliance safely without supervision or instruction.

--- Condition of children's play equipment.

Note 101.Pay attention to the following situations.

--- For equipment intended for use on vehicles, ships or aircraft, additional requirements may be required;

--- National management departments may impose additional requirements on equipment.

Note 102.This document does not apply to.

---Appliances designed for industrial use;

--- Intended for use in special environments where there are often corrosive or explosive gases (such as dust, steam or methane, etc.).

2 Normative references

Except for the following contents, this chapter of GB/T 4706.1-2024 applies.

Increase.

IEC 60320-2-1 Appliance couplers for household and similar purposes Part 2-1.Sewing machine couplers householdandsimilargeneralpurposes-Part 2-1.Sewingmachinecouplers) Note. GB/T 17465.5-2017 Appliance couplers for household and similar purposes Part 2-1.Sewing machine couplers (IEC 60320-2-1:2000, MOD)

3 Terms and definitions

Except for the following contents, this chapter of GB/T 4706.1-2024 applies.

3.1.9 Replaces.

Normal operation

The sewing machine is empty of thread and fabric, the presser foot is in the raised position, the bobbin winder is unloaded, and the stitch length and zigzag stitch width are adjusted.