GB/T 4706.17-2024 English PDF (GB/T4706.17-2024)

GB/T 4706.17-2024: Safety of household and similar electrical appliances - Part 17: Particular requirements for motor-compressors
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GB/T 4706.17-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.120
CCS K 09
GB/T 4706.17-2024 / IEC 60335-2-34:2021
Replacing GB 4706.17-2010
Safety of household and similar electrical appliances - Part
17: Particular requirements for motor-compressors
(IEC 60335-2-34:2021, Household and similar electrical appliances - Safety -
Part 2-34: Particular requirements for motor-compressors, IDT)
ISSUED ON: JULY 24, 2024
IMPLEMENTED ON: AUGUST 01, 2026
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 4
Introduction ... 7
1 Scope ... 8
2 Normative references ... 9
3 Terms and definitions ... 10
4 General requirement ... 13
5 General conditions for the tests ... 13
6 Classification ... 15
7 Marking and instructions ... 16
8 Protection against access to live parts ... 17
9 Starting of motor-operated appliances ... 17
10 Power input and current ... 17
11 Heating ... 17
12 Void ... 18
13 Leakage current and electric strength at operating temperature ... 18
14 Transient over-voltages ... 18
15 Moisture resistance ... 18
16 Leakage current and electric strength ... 18
17 Overload protection of transformers and associated circuits ... 19
18 Endurance ... 19
19 Abnormal operation ... 19
20 Stability and mechanical hazards ... 26
21 Mechanical strength ... 26
22 Construction ... 26
23 Internal wiring ... 31
24 Components ... 31
25 Supply connection and external flexible cords ... 31
26 Terminals for external conductors ... 32
27 Provision for earthing ... 32
28 Screws and connections ... 32
29 Clearances, creepage distances and solid insulation ... 32
30 Resistance to heat and fire ... 33
31 Resistance to rusting ... 34
32 Radiation, toxicity and similar hazards ... 34
Annexes (informative) Detection limit of different matrix specimens ... 35
Annex C ... 35
Annex D ... 35
Annex AA (normative) Running overload tests for motor-compressors classified as
tested with Annex AA ... 36
Annex BB (normative) Winding wire insulation compatibility tests ... 42
Annex CC (normative) Tie cords and insulation compatibility tests ... 46
Annex DD (normative) Non-sparking "n" electrical apparatus and test condition for
"dc" devices... 49
Annex EE (normative) Fatigue test ... 50
Bibliography ... 52
Foreword
This document was drafted in accordance with the rules given in GB/T 1.1-2020
"Directives for standardization - Part 1: Rules for the structure and drafting of
standardizing documents".
This document is Part 17 of GB/T 4706 "Safety of household and similar electrical
appliances". The following parts of GB/T 4706 have been issued:
- Part 1: General requirements;
- Part 2: Particular requirements for electric irons;
- Part 121: Particular requirements for professional ice-cream makers.
This document replaces GB 4706.17-2010 "Safety of household and similar electrical
appliances -- Particular requirements for motor-compressors". Compared with GB
4706.17-2010, in addition to structural adjustments and editorial changes, the main
technical changes in this document are as follows:
- Change the applicable range of rated voltage of the appliance (see Chapter 1 of this
Edition; Chapter 1 of Edition 2010). Add examples of types of devices equipped
with motor-compressors (see Chapter 1 of this Edition);
- Add the term definitions and related test requirements for application categories
(see 3.1.102, Annex AA of this Edition);
- Add the definition of two-stage motor-compressor (see 3.5.102 of this Edition);
- Add the term and definition of motorette and winding wire compatibility test (see
3.8.102, Annex BB of this Edition);
- Add speed requirements for variable speed motor-compressor tests (see 5.6 of this
Edition);
- Add the requirement to declare the type of protection used by the motor (see 5.102,
6.104 of this Edition);
- Add test requirements for cascade systems containing two or more motor-
compressors (see 5.103 of this Edition);
- Add the fire protection signs for flammable refrigerants and their use requirements
(see 7.1 and 7.6 of this Edition);
- Add requirements for warning sign height (see 7.14 of this Edition);
- Add requirements to replace the heating test in Chapter 11 with Annex AA. Clarify
the heating test requirements for motor-compressors that do not need to undergo
the Annex AA test according to classification (see Chapter 11 of this Edition);
- Add optional fatigue test (see 18.101, Annex EE of this Edition);
- Add motor-compressor fault test with electronic circuit (see 19.11.2, AA.3 of this
Edition);
- Add requirements for motor-compressors when using flammable refrigerants for
related tests (see 19.13, 24.101 of this Edition);
- Add pressure test for subcritical refrigeration system and transcritical refrigeration
system using R744 refrigerant (see 22.7 of this Edition);
- Add insulation material compatibility test (see 22.9, Annex BB and Annex CC of
this Edition);
- Add the minimum insulation thickness requirements for easily accessible
reinforced insulation at different rated voltages (see 29.1, 29.3.4 of this Edition);
- Add the requirements for electrical clearances for motor-compressors applicable to
high altitudes (see 29.1 of this Edition);
- Change the operating overload test conditions (see AA.1, AA.2, AA.3 of this
Edition; Annex AA of Edition 2010).
This document identically adopts IEC 60335-2-34:2021 "Household and similar
electrical appliances - Safety - Part 2-34: Particular requirements for motor-
compressors".
The following minimal editorial changes were made to this document:
- The name of the standard was changed to "Safety of household and similar
electrical appliances - Part 17: Particular requirements for motor-compressors" to
enhance the coordination of the standard system.
Attention is drawn to the possibility that some of the elements of this document may be
the subject of patent rights. The issuing authority shall not be held responsible for
identifying any or all such patent rights.
This document was proposed by China Light Industry Federation.
This document shall be under the jurisdiction of National Technical Committee on
Home Appliances of Standardization Administration of China (SAC/TC 46).
The drafting organizations of this document: China Household Electrical Appliances
Research Institute, Guangdong Meizhi Refrigeration Equipment Co., Ltd., Gasperella
Safety of household and similar electrical appliances - Part
17: Particular requirements for motor-compressors
1 Scope
This clause of GB/T 4706.1-2024 is replaced by the following:
This document specifies the safety requirements for electric motor-compressors for
household and similar purposes.
This document deals with the safety of sealed (hermetic and semi-hermetic type) motor-
compressors, their protection and control systems, if any, which are intended for use in
equipment for household and similar purposes and which conform with the standards
applicable to such equipment. It applies to motor-compressors tested separately, under
the most severe conditions that may be expected to occur in normal use, their rated
voltage being not more than 250 V for single-phase motor-compressors and 600 V for
other motor-compressors.
This document also covers
- multi-speed motor-compressors, that are motor-compressors, the speed of which
can be set to different values;
- variable capacity motor-compressors that are motor-compressors where the
capacity of the compressor is controlled at fixed speeds.
NOTE 101 Examples of equipment which contain motor-compressors are
- tumble dryers (IEC 60335-2-11);
- refrigerating appliances, ice-cream appliances and ice-makers (IEC 60335-2-24);
- electrical heat pumps, air-conditioners and dehumidifiers (IEC 60335-2-40);
- commercial dispensing appliances and vending machines (IEC 60335-2-75);
- commercial refrigerating appliances and ice-makers with an incorporated or remote refrigerant
unit or compressor (IEC 60335-2-89);
- electrical equipment for measurement, control, and laboratory use (IEC 61010-2-011);
- professional ice-cream makers (IEC 60335-2-118);
- refrigerating systems and heat pumps (ISO 5149-2).
- the components in the circuit comply with the requirements of Clause 24 using at
least the current and a power factor not exceeding that measured during the test.
NOTE 2 If a given motor-compressor, self-resetting motor-compressor protection system
combination is intended for use with more than one refrigerant, only one 15-day test is required, the
choice of the refrigerant being made by the motor-compressor manufacturer.
NOTE 3 These test procedures can be modified, if necessary, to evaluate motor-compressor
protection systems which incorporate special or unique features.
Motor-compressors with a self-resetting motor-compressor protection system and
designed for more than one rated voltage are also tested at the lowest voltage for 3 h.
NOTE 4 A separate sample can be used for the test at the lowest voltage.
For motor-compressors where the design of the protection system or control system is
such that the windings are de-energized permanently, the motor-compressor and motor-
compressor protection system (if any), together with all their associated components
which operate under locked-rotor conditions, are re-energized. This procedure is
repeated as rapidly as possible until 10 operations have been performed, with a
minimum off time of 6 s. A longer off time is permitted if a delay feature longer than 6
s is part of the protection system or control system.
If the motor-compressor is designed for more than one rated voltage, the test is
performed at all rated voltages.
If the motor-compressor is designed for a voltage range, the test is performed at the
upper and lower voltage limit.
Motor-compressors without a motor-compressor protection system are left energized as
described above for 15 days. The housing temperature is recorded on the 12th and 15th
days. If during these three days, the temperature has not increased by more than 5 K,
the test can be terminated.
19.102 The test of 19.101 is repeated for one operation of a non-self-resetting motor-
compressor protection system or 3 h minimum for a self-resetting motor-compressor
protection system under the following conditions:
- with motor starting capacitors and motor running capacitors open-circuited one at
a time;
- with motor starting capacitors and motor running capacitors short-circuited one at
a time, unless they have been tested and shown to comply with the requirements
for protection class S2 capacitors of IEC 60252-1.
NOTE 1 The test with the capacitors open-circuited need not be conducted for motor-compressors
where the open-circuited capacitors remove the start winding from the circuits.
GB/T 4706.17-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.120
CCS K 09
GB/T 4706.17-2024 / IEC 60335-2-34:2021
Replacing GB 4706.17-2010
Safety of household and similar electrical appliances - Part
17: Particular requirements for motor-compressors
(IEC 60335-2-34:2021, Household and similar electrical appliances - Safety -
Part 2-34: Particular requirements for motor-compressors, IDT)
ISSUED ON: JULY 24, 2024
IMPLEMENTED ON: AUGUST 01, 2026
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 4
Introduction ... 7
1 Scope ... 8
2 Normative references ... 9
3 Terms and definitions ... 10
4 General requirement ... 13
5 General conditions for the tests ... 13
6 Classification ... 15
7 Marking and instructions ... 16
8 Protection against access to live parts ... 17
9 Starting of motor-operated appliances ... 17
10 Power input and current ... 17
11 Heating ... 17
12 Void ... 18
13 Leakage current and electric strength at operating temperature ... 18
14 Transient over-voltages ... 18
15 Moisture resistance ... 18
16 Leakage current and electric strength ... 18
17 Overload protection of transformers and associated circuits ... 19
18 Endurance ... 19
19 Abnormal operation ... 19
20 Stability and mechanical hazards ... 26
21 Mechanical strength ... 26
22 Construction ... 26
23 Internal wiring ... 31
24 Components ... 31
25 Supply connection and external flexible cords ... 31
26 Terminals for external conductors ... 32
27 Provision for earthing ... 32
28 Screws and connections ... 32
29 Clearances, creepage distances and solid insulation ... 32
30 Resistance to heat and fire ... 33
31 Resistance to rusting ... 34
32 Radiation, toxicity and similar hazards ... 34
Annexes (informative) Detection limit of different matrix specimens ... 35
Annex C ... 35
Annex D ... 35
Annex AA (normative) Running overload tests for motor-compressors classified as
tested with Annex AA ... 36
Annex BB (normative) Winding wire insulation compatibility tests ... 42
Annex CC (normative) Tie cords and insulation compatibility tests ... 46
Annex DD (normative) Non-sparking "n" electrical apparatus and test condition for
"dc" devices... 49
Annex EE (normative) Fatigue test ... 50
Bibliography ... 52
Foreword
This document was drafted in accordance with the rules given in GB/T 1.1-2020
"Directives for standardization - Part 1: Rules for the structure and drafting of
standardizing documents".
This document is Part 17 of GB/T 4706 "Safety of household and similar electrical
appliances". The following parts of GB/T 4706 have been issued:
- Part 1: General requirements;
- Part 2: Particular requirements for electric irons;
- Part 121: Particular requirements for professional ice-cream makers.
This document replaces GB 4706.17-2010 "Safety of household and similar electrical
appliances -- Particular requirement...