GB 20044-2012 Electrical accessories—Portable residual current devices without integral overcurrent protection for household and similar use(PRCD) (English Version)
This standard specifies the classification, characteristics, marking and product information, standard conditions for operation and installation in service and for installation, requirements for construction and operation and tests of portable devices for household and similar uses (hereafter referred to as PRCD).
This standard applies to PRCDs, consisting of a plug, a residual current device (RCD) and one or more socket-outlets or a provision for connection, functionally independent of, or functionally dependent on, line voltage. They do not incorporate overcurrent protection. They are intended for single-phase circuits for rated currents not exceeding 16A for rated voltages not exceeding 250V a.c. They are intended to provide protection against shock hazard in case of direct contact, in addition to the protection provided by the fixed installations for the circuit downstream.
PRCDs have a rated residual operating current not exceeding 0.03A.
Plugs and socket-outlets will comply with the relevant standards.
This standard applies to portable devices performing simultaneously the functions of detection of the residual current, of comparison of the value of this current with the residual operating value and of opening of the protected circuit when the residual current exceeds this value.
They are not intended to be used as parts of fixed installations. Their connecting means may be plugs, socket-outlets, terminals or cables.
Notes:
1 The requirements for PRCDs are in line with the general requirements of GB 16916.1. PRCDs are essentially intended to be operated by unskilled persons and designed not to require maintenance. They may be submitted for certification purposes.
2 The RCD part of the PRCD is not intended to provide isolation which may be provided by the plug.
3 The use of an integral fuse is permitted, if necessary, for the relevant plug and socket-outlet system.
The requirements of this standard apply for environmental conditions as defined in 7.1. Additional requirements may be necessary for PRCDs used in locations having more severe environmental conditions.
PRCDs including batteries are not covered by this standard.
The present standard does not apply to PRCDs providing the additional function of detecting faults on the supply side and avoiding the closing of the PRCD on a faulty supply circuit.
Foreword I
1 Scope
2 Normative References
3 Terminologies and Definitions
3.1 Definitions Relating to Plugs and Socket-outlets
3.2 Definitions Relating to Residual Current Devices
3.3 Definitions Relating to Tests
4 Classification
4.1 According to the Type of Connection and Application
4.2 According to the Type of Terminals
4.3 According to the Method of Operation
4.4 According to the Working Condition of Residual Current Comprising a D.C. Component
4.5 According to the Ambient Air Temperature
5 Characteristics of PRCDs
5.1 Summary of Characteristics
5.2 Rated Quantities and Other Characteristics
5.3 Standard and Preferred Values
5.4 Coordination with Short-circuit Protective Devices (SCPDs)
6 Marking and Other Product Information
6.1 Each PRCD Shall be Marked in a Durable Manner with the Following Data
6.2 An Instruction Shall be Provided with the Following Information
7 Standard Conditions for Operation in Service and for Installation
7.1 Standard Conditions
7.2 Conditions for Installations
8 Requirements for Construction and Operation
8.1 Mechanical Design
8.2 Protection Against Electric Shock
8.3 Dielectric Properties
8.4 Temperature Rise
8.5 Operating Characteristic
8.6 Mechanical and Electrical Endurance
8.7 Performance at Short-circuit Currents
8.8 Resistance to Mechanical Shock and Impact
8.9 Resistance to Heat
8.10 Resistance to Abnormal Heat and to Fire
8.11 Test Device
8.12 Requirements for PRCDs Functionally Dependent on Line Voltage
8.13 Behavior of PRCDs in Case of Overcurrent in the Main Circuit
8.14 Resistance of PRCDs Against Unwanted Tripping Due to Surge Currents to Earth Resulting from Impulse Voltages
8.15 Behavior of PRCDs in Case of an Earth Fault Current Comprising a D.C. Component
8.16 Reliability
8.17 Resistance to Tracking
8.18 Electromagnetic Compatibility (EMC)
9 Tests
9.1 General
9.2 Test Conditions
9.3 Test of Indelibility of Marking
9.4 Test of Reliability of Screws, Current-carrying Parts and Connections
9.5 Test of Reliability of Terminals for External Conductors
9.6 Verification of Protection Against Electric Shock
9.7 Test of Dielectric Properties
9.8 Temperature-rise Test
9.9 Verification of the Operating Characteristic
9.10 Verification of Mechanical and Electrical Endurance
9.11 Verification of the Behavior of PRCD under overcurrent Conditions
9.12 Verification of Resistance to Mechanical Vibration and Impact
9.13 Heat Resistance Test
9.14 Tests for Resistance of Insulating Material to Abnormal Heating and Fire
9.15 Verification of the Trip-free Mechanism
9.16 Verification of the Test Device
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
9.18 Verification of Limiting Values of the Non-operating Current under Overcurrent Conditions
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
9.20 Verification of Resistance of the PRCD against Impulse Voltages
9.21 Verification of the Correct Operation with Residual Current having DC Component
9.22 Verification of Reliability
9.23 Verification of Ageing
9.24 Resistance to Tracking
9.25 Verification of the Effects of Strain on the Conductors
9.26 Verification of the Torque Exerted by Plug-in PRCDs on Fixed Socket-outlets
9.27 Tests of the Cable Anchorage
9.28 Flexing Test of Non-rewirable PRCDs
9.29 Verification of the Electromagnetic Compatibility (EMC)
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
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.
Appendix A (Normative) Test Sequences and Number of Samples to be Submitted for Verification of Conformity to This Standard
A.1 Verification of Conformity
A.2 Test Sequences
A.3 Number of Samples to be Submitted for Full Test Sequence
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
Appendix B (Normative) Routine Tests
B.1 Tripping Test
B.2 Electric Strength Test
B.3 Performance of the Test Device
B.4 Stray Wire Test
B.5 Correct Continuity Test
Appendix C (Normative) Determination of Clearances and Creepage Distances
Figure 1 Examples of Types of Connection Classified According to
Figure 2 Standard Test Finger
Figure 3 Gauge for Checking Non-accessibility of Live Components through Shutters and of Live Components of Socket-outlets with Increased Protection
Figure 4 Test Circuit for the Verification of the Following Items
Figure 5 Test Circuit for the Verification of the Correct Operation of PRCDs, in the Case of Residual Pulsating Direct Currents
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
Figure 7 Example of Device for Breaking Capacity and Normal Operation Tests
Figure 8 Circuit Diagrams for Breaking Capacity and Normal Operation Tests
Figure 9 Gauge for Checking Non-accessibility of Live Components of Socket-outlets, through Shutters, after Normal Operation Test
Figure 10 Test Circuit for the Verification of the Rated Making and Breaking Capacity and of the Coordination
Figure 11 Tumbling Barrel
Figure 12 Compression Test Device
Figure 13 Ball-pressure Test Device
Figure 14 Arrangement and Dimensions of the Electrodes for the Tracking Test
Figure 15 Device for Testing the Cable Retention
Figure 16 Device for Flexing Test
Figure 17 Arrangement for Mechanical Strength Test on PRCDs Provided with Cables (9.12.4)
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)]
Figure 19 Stabilizing Period for Reliability Test (9.22.1.3)
Figure 20 Reliability Test Cycle (9.22.1.3)
Figure 21 Example for Test Circuit for Verification of Ageing of Electronic Components (9.23)
Figure 22 a) Current Ring Wave 0.5μs/100kHz
Figure 22 b) Example of Test Circuit for the Verification of Resistance to Unwanted Tripping
Figure 23 Minimum Creepage Distances and Clearances as a Function of Peak Value of Voltage
Figure 24 Minimum Creepage Distances and Clearances as a Function of Peak Value of Operating Voltage
Figure 25 Low-temperature Test Cycle
Table 1 Standard Values of Rated Current and Corresponding Preferred Values of Rated Voltages
Table 2 Standard Values of Break Time for A.C. Residual Currents
Table 3 Standard Conditions for Operation in Service
Table 4 Minimum Cross-sectional Area of Flexible Cable Suitable for Non-rewirable Plugs and Non-rewirable Socket-outlets of PRCDs
Table 5 Clearances and Creepage Distances
Table 6 Connectable Cross-sections of Copper Conductors for Screw-type Terminals
Table 7 Degree of Protection of PRCD Parts
Table 8 Temperature-rise Values
Table 9 Type Test
Table 10 Cross-sectional Area for Test Conductor
Table 11 Screw Thread Diameters and Exerted Torque
Table 12 Conductor Make-up
Table 13 Test to Verify the Behavior of PRCDs Under Overcurrent Conditions
Table 14 Tests of Resistance to Mechanical Vibration and Impact
Table 15 Torque Applied to the Spanner for the Test in 9.
Table 16 Tripping Current Range for PRCD in case of Residual Pulsating Direct Current
Table 17 Make-up of Cables Suitable for the Retention Test of Rewirable PRCDs
Table 18 Maximum Permissible Temperatures under Abnormal Conditions
Table A.1 Test Sequences
Table A.2 Number of Samples to be Submitted for Full Test Sequence
Table A.3 Reduction of number of samples
Table A.4 Reduction of Additional Test Sequences
Table A.5 Reduction of Additional Test Sequences
GB 20044-2012 Electrical accessories—Portable residual current devices without integral overcurrent protection for household and similar use(PRCD) (English Version)
Standard No.
GB 20044-2012
Status
valid
Language
English
File Format
PDF
Word Count
30000 words
Price(USD)
280.0
Implemented on
2013-12-1
Delivery
via email in 1 business day
Detail of GB 20044-2012
Standard No.
GB 20044-2012
English Name
Electrical accessories—Portable residual current devices without integral overcurrent protection for household and similar use(PRCD)
This standard specifies the classification, characteristics, marking and product information, standard conditions for operation and installation in service and for installation, requirements for construction and operation and tests of portable devices for household and similar uses (hereafter referred to as PRCD).
This standard applies to PRCDs, consisting of a plug, a residual current device (RCD) and one or more socket-outlets or a provision for connection, functionally independent of, or functionally dependent on, line voltage. They do not incorporate overcurrent protection. They are intended for single-phase circuits for rated currents not exceeding 16A for rated voltages not exceeding 250V a.c. They are intended to provide protection against shock hazard in case of direct contact, in addition to the protection provided by the fixed installations for the circuit downstream.
PRCDs have a rated residual operating current not exceeding 0.03A.
Plugs and socket-outlets will comply with the relevant standards.
This standard applies to portable devices performing simultaneously the functions of detection of the residual current, of comparison of the value of this current with the residual operating value and of opening of the protected circuit when the residual current exceeds this value.
They are not intended to be used as parts of fixed installations. Their connecting means may be plugs, socket-outlets, terminals or cables.
Notes:
1 The requirements for PRCDs are in line with the general requirements of GB 16916.1. PRCDs are essentially intended to be operated by unskilled persons and designed not to require maintenance. They may be submitted for certification purposes.
2 The RCD part of the PRCD is not intended to provide isolation which may be provided by the plug.
3 The use of an integral fuse is permitted, if necessary, for the relevant plug and socket-outlet system.
The requirements of this standard apply for environmental conditions as defined in 7.1. Additional requirements may be necessary for PRCDs used in locations having more severe environmental conditions.
PRCDs including batteries are not covered by this standard.
The present standard does not apply to PRCDs providing the additional function of detecting faults on the supply side and avoiding the closing of the PRCD on a faulty supply circuit.
Contents of GB 20044-2012
Foreword I
1 Scope
2 Normative References
3 Terminologies and Definitions
3.1 Definitions Relating to Plugs and Socket-outlets
3.2 Definitions Relating to Residual Current Devices
3.3 Definitions Relating to Tests
4 Classification
4.1 According to the Type of Connection and Application
4.2 According to the Type of Terminals
4.3 According to the Method of Operation
4.4 According to the Working Condition of Residual Current Comprising a D.C. Component
4.5 According to the Ambient Air Temperature
5 Characteristics of PRCDs
5.1 Summary of Characteristics
5.2 Rated Quantities and Other Characteristics
5.3 Standard and Preferred Values
5.4 Coordination with Short-circuit Protective Devices (SCPDs)
6 Marking and Other Product Information
6.1 Each PRCD Shall be Marked in a Durable Manner with the Following Data
6.2 An Instruction Shall be Provided with the Following Information
7 Standard Conditions for Operation in Service and for Installation
7.1 Standard Conditions
7.2 Conditions for Installations
8 Requirements for Construction and Operation
8.1 Mechanical Design
8.2 Protection Against Electric Shock
8.3 Dielectric Properties
8.4 Temperature Rise
8.5 Operating Characteristic
8.6 Mechanical and Electrical Endurance
8.7 Performance at Short-circuit Currents
8.8 Resistance to Mechanical Shock and Impact
8.9 Resistance to Heat
8.10 Resistance to Abnormal Heat and to Fire
8.11 Test Device
8.12 Requirements for PRCDs Functionally Dependent on Line Voltage
8.13 Behavior of PRCDs in Case of Overcurrent in the Main Circuit
8.14 Resistance of PRCDs Against Unwanted Tripping Due to Surge Currents to Earth Resulting from Impulse Voltages
8.15 Behavior of PRCDs in Case of an Earth Fault Current Comprising a D.C. Component
8.16 Reliability
8.17 Resistance to Tracking
8.18 Electromagnetic Compatibility (EMC)
9 Tests
9.1 General
9.2 Test Conditions
9.3 Test of Indelibility of Marking
9.4 Test of Reliability of Screws, Current-carrying Parts and Connections
9.5 Test of Reliability of Terminals for External Conductors
9.6 Verification of Protection Against Electric Shock
9.7 Test of Dielectric Properties
9.8 Temperature-rise Test
9.9 Verification of the Operating Characteristic
9.10 Verification of Mechanical and Electrical Endurance
9.11 Verification of the Behavior of PRCD under overcurrent Conditions
9.12 Verification of Resistance to Mechanical Vibration and Impact
9.13 Heat Resistance Test
9.14 Tests for Resistance of Insulating Material to Abnormal Heating and Fire
9.15 Verification of the Trip-free Mechanism
9.16 Verification of the Test Device
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
9.18 Verification of Limiting Values of the Non-operating Current under Overcurrent Conditions
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
9.20 Verification of Resistance of the PRCD against Impulse Voltages
9.21 Verification of the Correct Operation with Residual Current having DC Component
9.22 Verification of Reliability
9.23 Verification of Ageing
9.24 Resistance to Tracking
9.25 Verification of the Effects of Strain on the Conductors
9.26 Verification of the Torque Exerted by Plug-in PRCDs on Fixed Socket-outlets
9.27 Tests of the Cable Anchorage
9.28 Flexing Test of Non-rewirable PRCDs
9.29 Verification of the Electromagnetic Compatibility (EMC)
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
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.
Appendix A (Normative) Test Sequences and Number of Samples to be Submitted for Verification of Conformity to This Standard
A.1 Verification of Conformity
A.2 Test Sequences
A.3 Number of Samples to be Submitted for Full Test Sequence
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
Appendix B (Normative) Routine Tests
B.1 Tripping Test
B.2 Electric Strength Test
B.3 Performance of the Test Device
B.4 Stray Wire Test
B.5 Correct Continuity Test
Appendix C (Normative) Determination of Clearances and Creepage Distances
Figure 1 Examples of Types of Connection Classified According to
Figure 2 Standard Test Finger
Figure 3 Gauge for Checking Non-accessibility of Live Components through Shutters and of Live Components of Socket-outlets with Increased Protection
Figure 4 Test Circuit for the Verification of the Following Items
Figure 5 Test Circuit for the Verification of the Correct Operation of PRCDs, in the Case of Residual Pulsating Direct Currents
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
Figure 7 Example of Device for Breaking Capacity and Normal Operation Tests
Figure 8 Circuit Diagrams for Breaking Capacity and Normal Operation Tests
Figure 9 Gauge for Checking Non-accessibility of Live Components of Socket-outlets, through Shutters, after Normal Operation Test
Figure 10 Test Circuit for the Verification of the Rated Making and Breaking Capacity and of the Coordination
Figure 11 Tumbling Barrel
Figure 12 Compression Test Device
Figure 13 Ball-pressure Test Device
Figure 14 Arrangement and Dimensions of the Electrodes for the Tracking Test
Figure 15 Device for Testing the Cable Retention
Figure 16 Device for Flexing Test
Figure 17 Arrangement for Mechanical Strength Test on PRCDs Provided with Cables (9.12.4)
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)]
Figure 19 Stabilizing Period for Reliability Test (9.22.1.3)
Figure 20 Reliability Test Cycle (9.22.1.3)
Figure 21 Example for Test Circuit for Verification of Ageing of Electronic Components (9.23)
Figure 22 a) Current Ring Wave 0.5μs/100kHz
Figure 22 b) Example of Test Circuit for the Verification of Resistance to Unwanted Tripping
Figure 23 Minimum Creepage Distances and Clearances as a Function of Peak Value of Voltage
Figure 24 Minimum Creepage Distances and Clearances as a Function of Peak Value of Operating Voltage
Figure 25 Low-temperature Test Cycle
Table 1 Standard Values of Rated Current and Corresponding Preferred Values of Rated Voltages
Table 2 Standard Values of Break Time for A.C. Residual Currents
Table 3 Standard Conditions for Operation in Service
Table 4 Minimum Cross-sectional Area of Flexible Cable Suitable for Non-rewirable Plugs and Non-rewirable Socket-outlets of PRCDs
Table 5 Clearances and Creepage Distances
Table 6 Connectable Cross-sections of Copper Conductors for Screw-type Terminals
Table 7 Degree of Protection of PRCD Parts
Table 8 Temperature-rise Values
Table 9 Type Test
Table 10 Cross-sectional Area for Test Conductor
Table 11 Screw Thread Diameters and Exerted Torque
Table 12 Conductor Make-up
Table 13 Test to Verify the Behavior of PRCDs Under Overcurrent Conditions
Table 14 Tests of Resistance to Mechanical Vibration and Impact
Table 15 Torque Applied to the Spanner for the Test in 9.
Table 16 Tripping Current Range for PRCD in case of Residual Pulsating Direct Current
Table 17 Make-up of Cables Suitable for the Retention Test of Rewirable PRCDs
Table 18 Maximum Permissible Temperatures under Abnormal Conditions
Table A.1 Test Sequences
Table A.2 Number of Samples to be Submitted for Full Test Sequence
Table A.3 Reduction of number of samples
Table A.4 Reduction of Additional Test Sequences
Table A.5 Reduction of Additional Test Sequences
