GB/T 4706.71-2024Safety of household and similar electrical appliances - Part 71: Particular requirements for stationary circulation pumps for heating and service water installations (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 71 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 4706.71-2008 "Particular requirements for fixed circulation pumps for household and similar electrical appliances for safety of heating and water supply devices" Compared with GB 4706.71-2008, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

--- Deleted the 300W limit in the scope and clarified the definition of the population not considered (see Chapter 1, Chapter 1 of the 2008 edition);

--- Change "flow rate" to "flow rate" (see 3.1.9, 7.12.1, 19.7, 3.1.9, 7.12.1, 19.7 of the 2008 edition);

--- Added the requirements for instructions for use (see 7.12);

--- Added the requirements for installation instructions (see 7.12.1);

--- Changed the provisions for the placement of the appliance in the heating test (see 11.2, 11.2 of the 2008 edition);

--- Changed some notes to the text (see 7.12.1, 11.3, 11.8, 7.12.1, 11.3, 11.8 of the 2008 edition).

This document is equivalent to IEC 60335-2-51:2019 "Household and similar electrical appliances - Safety - Part 2-51.Heating and water supply appliances" Special requirements for fixed circulation pumps.

The following minimal editorial changes were made to this document.

--- The name of the standard is changed to "Safety of Household and Similar Electrical Appliances Part 71: Characteristics of Fixed Circulation Pumps for Heating and Water Supply Installations Special Requirements for Standardization and Enhance the Coordination of the Standard System.

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 the corresponding clauses in GB/T 4706.1-2024 are applicable to this document; the part marked "replaces" in this document indicates that the corresponding clauses in GB/T 4706.1-2024 are applicable to this document.

For the parts marked as "added" in this document, in addition to complying with GB/T 4706.1-2024, the provisions in this document shall prevail.

In addition to the corresponding clauses, the clauses added in the clauses of this document must also be complied with; the part of this document marked "modified" means that in GB/T 4706.1-the relevant provisions of 2024 will be modified.

Safety of household and similar electrical appliances Part 71.

Particular requirements for stationary circulating pumps for heating and water supply installations

1 Scope

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

This document specifies the safety requirements for electrically powered stationary circulation pumps for household and similar purposes.

This document applies to single-phase appliances with a rated voltage not exceeding 250V and other appliances with a rated voltage not exceeding 480V for heating Electric stationary circulating pumps for domestic and similar purposes in water systems or water supply systems.

NOTE 101 The hydraulic and electrical sections of the pump may be contained in the same housing so that the water flows through the motor as a coolant, or they may be separate.

This document also applies to appliances not intended for normal household use but which may nevertheless present a hazard to the public, such as those intended for use in shops, light industry and agriculture.

Equipment used by non-professionals in the field.

As far as is practical, the common hazards presented by the various appliances covered by this document are present in all persons in and around the home.

However, in general, this document does not consider the following situations.

--- The following groups of people (including children) cannot use the appliance safely without supervision or guidance.

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

--- Children's play equipment.

Note 102.Pay attention to the following.

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

--- National authorities may impose additional requirements on equipment.

Note 103.This document does not apply to.

--- Liquid circulation pump other than water medium;

--- Pumps other than circulating pumps (GB/T 4706.66);

--- Circulation pumps specially designed for industrial use;

--- Circulation pumps intended for use in special environments, such as those where corrosive or explosive gases (e.g. dust, steam or methane) are present place.

2 Normative references

This chapter of GB/T 4706.1-2024 is applicable.

3 Terms and definitions

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