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GB 4706.89-2008 English PDF (GB4706.89-2008)

GB 4706.89-2008 English PDF (GB4706.89-2008)

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GB 4706.89-2008: Household and similar electrical appliances -- Safety -- Particular requirements for high pressure cleaners and steam cleaners, for industrial and commercial use

GB 4706.89-2008
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.120
K 09
GB 4706.89-2008 / IEC 60335-2-79:1995
Household and Similar Electrical Appliances –
Safety – Particular Requirements
for High Pressure Cleaners and Steam
Cleaners, for Industrial and Commercial Use
(IEC 60335-2-79:1995, IDT)
ISSUED ON: JUNE 13, 2008
IMPLEMENTED ON: JULY 01, 2009
Issued by: General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration of PRC.
3. No action is required - Full-copy of this standard will be automatically and immediately delivered to your EMAIL address in 0~60 minutes.
Table of Contents
Foreword ... 4
IEC Foreword ... 6
1 Scope ... 9
2 Definitions ... 9
3 General Requirement ... 11
4 General Conditions for the Tests ... 11
5 Void ... 12
6 Classification ... 12
7 Marking and Instructions ... 13
8 Protection against Access to Live Parts ... 15
9 Starting of Motor-Operated Appliances ... 16
10 Input Power and Current ... 16
11 Heating ... 16
12 Void ... 17
13 Leakage Current and Dielectric Strength at Operating Temperature ... 17 14 Void ... 18
15 Moisture Resistance ... 18
16 Leakage Current and Electric Strength ... 19
17 Overload Protection of Transformers and Associated Circuits ... 19
18 Endurance ... 19
19 Abnormal Operation ... 20
20 Stability and Mechanical Hazards ... 23
21 Mechanical Strength ... 24
22 Construction ... 25
23 Internal Wiring ... 28
24 Components ... 28
25 Supply Connection and External Flexible Cords ... 29
26 Terminals for External Conductors ... 30
27 Provisions for Earthing ... 30
28 Screws and Connections ... 30
29 Creepage Distances, Clearances and Distances through Insulation ... 30 30 Resistance to Heat, Fire and Tracking ... 30
31 Resistance to Rusting ... 30
32 Radiation, Toxicity and Similar Hazards ... 30
Figures ... 31
Appendix A (Normative) Normative References ... 33
Foreword
All technical contents in this Part of GB 4706 are mandatory.
This Part equivalently adopted IEC 60335-2-79:1995 Household and Similar Electrical Appliances – Safety – Part 2: Particular Requirements for High Pressure Cleaners and Steam Cleaners, for Industrial and Commercial Use. (1995) Version I, No.1 Amendment (2000).
This Part shall be used in conjunction with GB 4706.1-1998 Safety of Household and Similar Electrical Appliances - Part 1: General Requirements.
The clearly-written “Applicable” part in this Part indicates that the corresponding clauses and sub-clauses in GB 4706.1-1998 are applicable; the clearly-written “Replacement” part in this Part shall be subject to the clauses and sub-clauses in this Part; the clearly-written “Modification” part in this Part indicates the relevant contents of the corresponding clauses and sub-clauses in GB 4706.1-1998 shall be subject to the modified contents of this Part, while other contents of such clauses and sub- clauses are still applicable; the clearly-written “Addition” part in this Part indicates in addition to conform to the corresponding clauses and sub-clauses in GB 4706.1-1998, it also conforms to the additional clauses and sub-clauses in this Part. In order to be consistent with the provisions of the international Electrotechnical Commission (IEC), the pressure units in this Part retain the pressure unit (bar) in the original document and enclosed in the brackets as adopt the Internal System of Units (Pa), and the former (bar) is placed after the latter (Pa).
Additionally, in order to comply with the national symbol usage rules, use the symbols to modify the formula in the original text of 22.106 in this Part as follows: modify the original formula “ where: W is outlet speed of water, m/s; ΔP is rated
pressure, bar.” into “ where: v is outlet speed of water, m/s; ΔP is rated pressure, Pa.” Thereof, the Coefficient 200 is modified into 200/105=0.002 according to the unit change of rated pressure. Similarly, modify the original formula in 22.106 of “ ” into “ ”; while the formula in the original text of “ ”
is modified into “ ” (torque symbol T is replaced by M).
The non-heading bold in the text of this Part is defined in Clause 2.
The appendix attributes of this Part shall be subject to the provisions of appendix attributes in GB 4706.1-1998.
The additional sub-clauses, notes and figures in this Part shall be started numbering from 101.
This Part was proposed by China Light Industry Council.
This Part shall be under the jurisdiction of Commercial Electric Dietary Processing Service Equipment Subcommittee of National Technical Committee for
Standardization of Automatic Electric Control for Household.
Drafting organizations of this Part: Beijing Service Machinery Research Institute, and Zhejiang Gongshang University.
Chief drafting staffs of this Part: Li Jiping, Liu Xu, Zhang Chengbin, Wu Linshu, Hong Yongping, and Shang Weidong.
Household and Similar Electrical Appliances –
Safety – Particular Requirements
for High Pressure Cleaners and Steam
Cleaners, for Industrial and Commercial Use
1 Scope
This clause of GB 4706.1-19981 is applicable except as follows:
Addition:
This Part applies to high pressure cleaners having a pressure not less than 25 × 105 Pa (25 bar) and not more than 250 × 105 Pa (250 bar) with an input to the drive for the high-pressure pump not exceeding 10 kW. It also applies to steam cleaners having a usable volume of the water container equal to or greater than 1.5L even if the pressure is less than 25 × 105 Pa (25 bar).
This Part also applies to fixed appliances within the limits of the previous paragraph. It is also applicable to appliances making use of other forms of energy for the motor; but it is necessary that their influence is taken into consideration.
Modification:
Replace the first two dashed paragraphs of note 3 by:
- appliances that are incorporated in process equipment;
- appliances intended to be used in locations where special conditions prevail, such as the presence of corrosive or explosive atmosphere (vapor or gas).
2 Definitions
This clause of GB 4706.1-1998 is applicable except as follows:
2.2.9 Such sub-clause is replaced as follows:
Normal operation

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