GB 20044-2012 (GB20044-2012) & related versions
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[GB/T 20044-2012] Electrical accessories -- Portable residual current devices without integral overcurrent protection for household and similar use (PRCD)
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GB 20044-2012
| Valid |
GB 20044-2012
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| GB 20044-2005 | English | RFQ |
ASK
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14 days
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Electrical accessories -- Portable residual current devices without integral overcurrent protection for household and similar use (PRCDs)
|
GB 20044-2005
| Obsolete |
GB 20044-2005
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GB 20044-2012: PDF in English
ICS 29.120.50 K
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
Replacing GB 20044-2005
Electrical Accessories - Portable Residual Current
Devices without Integral Overcurrent Protection
for Household and Similar Use (PRCD)
(IEC 61540. 1999, MOD)
ISSUED ON. DECEMBER 31, 2012
IMPLEMENTED ON. DECEMBER 1, 2013
Jointly Issued by General Administration of Quality Supervision,
Inspection and Quarantine (AQSIQ);
Standardization Administration (SAC) of the
People's Republic of China.
GB
Contents
Foreword ... I
1 Scope .. 1
2 Normative References .. 2
3 Terminologies and Definitions ... 3
3.1 Definitions Relating to Plugs and Socket-outlets ... 3
3.2 Definitions Relating to Residual Current Devices ... 5
3.3 Definitions Relating to Tests ... 11
4 Classification ... 11
4.1 According to the Type of Connection and Application ... 11
4.2 According to the Type of Terminals ... 12
4.3 According to the Method of Operation ... 12
4.4 According to the Working Condition of Residual Current Comprising a D.C.
Component ... 12
4.5 According to the Ambient Air Temperature ... 12
5 Characteristics of PRCDs ... 12
5.1 Summary of Characteristics ... 12
5.2 Rated Quantities and Other Characteristics ... 13
5.3 Standard and Preferred Values ... 14
5.4 Coordination with Short-circuit Protective Devices (SCPDs) ... 14
6 Marking and Other Product Information ... 15
6.1 Each PRCD Shall be Marked in a Durable Manner with the Following Data .. 15
6.2 An Instruction Shall be Provided with the Following Information .. 17
7 Standard Conditions for Operation in Service and for Installation ... 17
7.1 Standard Conditions ... 17
7.2 Conditions for Installations .. 18
8 Requirements for Construction and Operation ... 18
8.1 Mechanical Design .. 18
8.2 Protection Against Electric Shock .. 28
8.3 Dielectric Properties ... 30
8.4 Temperature Rise ... 30
8.5 Operating Characteristic ... 30
8.6 Mechanical and Electrical Endurance ... 30
8.7 Performance at Short-circuit Currents .. 30
8.8 Resistance to Mechanical Shock and Impact ... 30
8.9 Resistance to Heat ... 30
8.10 Resistance to Abnormal Heat and to Fire ... 31
8.11 Test Device .. 31
8.12 Requirements for PRCDs Functionally Dependent on Line Voltage ... 31
8.13 Behavior of PRCDs in Case of Overcurrent in the Main Circuit ... 31
8.14 Resistance of PRCDs Against Unwanted Tripping Due to Surge Currents to Earth
Resulting from Impulse Voltages .. 31
8.15 Behavior of PRCDs in Case of an Earth Fault Current Comprising a D.C.
Component ... 31
8.16 Reliability... 31
8.17 Resistance to Tracking ... 32
8.18 Electromagnetic Compatibility (EMC) .. 32
9 Tests .. 32
9.1 General ... 32
9.2 Test Conditions ... 32
9.3 Test of Indelibility of Marking ... 34
9.4 Test of Reliability of Screws, Current-carrying Parts and Connections .. 34
9.5 Test of Reliability of Terminals for External Conductors ... 35
9.6 Verification of Protection Against Electric Shock ... 36
9.7 Test of Dielectric Properties ... 37
9.8 Temperature-rise Test .. 39
9.9 Verification of the Operating Characteristic ... 40
9.10 Verification of Mechanical and Electrical Endurance ... 43
9.11 Verification of the Behavior of PRCD under overcurrent Conditions ... 45
9.12 Verification of Resistance to Mechanical Vibration and Impact ... 51
9.13 Heat Resistance Test ... 53
9.14 Tests for Resistance of Insulating Material to Abnormal Heating and Fire ... 54
9.15 Verification of the Trip-free Mechanism ... 55
9.16 Verification of the Test Device ... 55
9.17 Verification of the Behavior of PRCDs Functionally Dependent on Line Voltage,
Classified under 4.3.2 in case of Fault of the Line Voltage .. 56
9.18 Verification of Limiting Values of the Non-operating Current under Overcurrent
Conditions ... 57
9.19 Verification of Resistance against Unwanted Tripping due to Surge Currents to
Earth Resulting from Impulse Voltages for PRCDs of I∆n≥0.010A ... 57
9.20 Verification of Resistance of the PRCD against Impulse Voltages ... 58
9.21 Verification of the Correct Operation with Residual Current having DC
Component ... 58
9.22 Verification of Reliability .. 59
9.23 Verification of Ageing .. 62
9.24 Resistance to Tracking ... 62
9.25 Verification of the Effects of Strain on the Conductors ... 63
9.26 Verification of the Torque Exerted by Plug-in PRCDs on Fixed Socket-outlets .. 63
9.27 Tests of the Cable Anchorage ... 63
9.28 Flexing Test of Non-rewirable PRCDs .. 64
9.29 Verification of the Electromagnetic Compatibility (EMC) ... 65
9.30 Tests Replacing Verifications of Creepage Distances and Clearances for Electronic
Circuits Connected between Active Conductors (Phases and Neutral) and/or between
Active Conductors and the Earth Circuit when the Contacts are in the Closed Position . 66
9.31 Requirements for Capacitors and Specific Resistors and Inductors Used in
Electronic Circuits Connected between Active Conductors (Phases and Neutral) and/or
between Active Conductors and the Earth Circuit when the Contacts are in the Closed
Position... 69
Appendix A (Normative) Test Sequences and Number of Samples to be Submitted for
Verification of Conformity to This Standard ... 90
A.1 Verification of Conformity .. 90
A.2 Test Sequences ... 90
A.3 Number of Samples to be Submitted for Full Test Sequence... 90
A.4 Number of Samples to be Submitted for Simplified Test Sequences in case of
Submitting Simultaneously a Range of PRCDs of the Same Fundamental Design .. 90
Appendix B (Normative) Routine Tests ... 98
B.1 Tripping Test ... 98
B.2 Electric Strength Test ... 98
B.3 Performance of the Test Device .. 98
B.4 Stray Wire Test ... 98
B.5 Correct Continuity Test ... 98
Appendix C (Normative) Determination of Clearances and Creepage Distances .. 100
Figure 1 Examples of Types of Connection Classified According to 4.1 ... 70
Figure 2 Standard Test Finger... 71
Figure 3 Gauge for Checking Non-accessibility of Live Components through Shutters and
of Live Components of Socket-outlets with Increased Protection .. 72
Figure 4 Test Circuit for the Verification of the Following Items ... 73
Figure 5 Test Circuit for the Verification of the Correct Operation of PRCDs, in the Case of
Residual Pulsating Direct Currents ... 76
Figure 6 Test Circuit for the Verification of the Correct Operation of PRCDs, in the Case of
Residual Pulsating Direct Currents Superimposed by a Smooth Direct Current ... 77
Figure 7 Example of Device for Breaking Capacity and Normal Operation Tests .. 78
Figure 8 Circuit Diagrams for Breaking Capacity and Normal Operation Tests ... 79
Figure 9 Gauge for Checking Non-accessibility of Live Components of Socket-outlets,
through Shutters, after Normal Operation Test ... 79
Figure 10 Test Circuit for the Verification of the Rated Making and Breaking Capacity and
of the Coordination .. 80
Figure 11 Tumbling Barrel ... 81
Figure 12 Compression Test Device .. 81
Figure 13 Ball-pressure Test Device ... 81
Figure 14 Arrangement and Dimensions of the Electrodes for the Tracking Test ... 82
Figure 15 Device for Testing the Cable Retention ... 82
Figure 16 Device for Flexing Test .. 83
Figure 17 Arrangement for Mechanical Strength Test on PRCDs Provided with Cables
(9.12.4) ... 83
Figure 18 Test Device for the Verification of the Minimum I2t and Ip Values to be Withstood
by the PRCD [9.11.2.1 a)] ... 84
Figure 19 Stabilizing Period for Reliability Test (9.22.1.3) ... 85
Figure 20 Reliability Test Cycle (9.22.1.3) .. 86
Figure 21 Example for Test Circuit for Verification of Ageing of Electronic Components
(9.23) ... 86
Figure 22 a) Current Ring Wave 0.5μs/100kHz ... 87
Figure 22 b) Example of Test Circuit for the Verification of Resistance to Unwanted
Tripping .. 88
Figure 23 Minimum Creepage Distances and Clearances as a Function of Peak Value of
Voltage ... 88
Figure 24 Minimum Creepage Distances and Clearances as a Function of Peak Value of
Operating Voltage ... 89
Figure 25 Low-temperature Test Cycle ... 89
Table 1 Standard Values of Rated Current and Corresponding Preferred Values of Rated
Voltages .. 14
Table 2 Standard Values of Break Time for A.C. Residual Currents ... 14
Table 3 Standard Conditions for Operation in Service .. 18
Table 4 Minimum Cross-sectional Area of Flexible Cable Suitable for Non-rewirable Plugs
and Non-rewirable Socket-outlets of PRCDs .. 23
Table 5 Clearances and Creepage Distances ... 25
Table 6 Connectable Cross-sections of Copper Conductors for Screw-type Terminals ... 27
Table 7 Degree of Protection of PRCD Parts .. 29
Table 8 Temperature-rise Values ... 30
Table 9 Type Test .. 33
Table 10 Cross-sectional Area for Test Conductor ... 34
Table 11 Screw ...
......
| Standard ID | GB 20044-2012 (GB20044-2012) | | Description (Translated English) | [GB/T 20044-2012] Electrical accessories. Portable residual current devices without integral overcurrent protection for household and similar use (PRCD) | | Sector / Industry | National Standard | | Classification of Chinese Standard | K31 | | Classification of International Standard | 29.120.50 | | Word Count Estimation | 91,946 | | Older Standard (superseded by this standard) | GB 20044-2005 | | Quoted Standard | GB 1002-2008; GB/T 1633-2000; GB 2099.1-2008; GB/T 2423.4-2008; GB/T 4207-2003; GB 4208-2008; GB 4343.1-2009; GB/T 5013.1-2008; GB/T 5023.1-2008; GB/T 5169.10-2006; GB/T 5465.2-2008; GB/Z 6829-2008; GB 8898-2011; GB/T 14472-1998; GB 16916.1-2003; GB 16895 | | Adopted Standard | IEC 61540-1999, MOD | | Drafting Organization | Shanghai Electrical Apparatus Research Institute | | Administrative Organization | National Standardization Technical Committee of low-voltage electrical | | Regulation (derived from) | National Standards Bulletin No. 41 of 2012 | | Proposing organization | China Electrical Equipment Industry Association | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This Chinese standard specifies the household and similar use portable residual current device classification, characteristics, logos, and product information on the use and installation of standard working conditions, structure and operation requirements |
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