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[GB/T 16916.1-2014] Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCB) -- Part 1: General rules
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Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCB) -- Part 1: General rules [including MODIFICATION 1]
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Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCB)--Part 1: Genaral rules
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GB 16916.1-2014: [GB/T 16916.1-2014] Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCB) -- Part 1: General rules
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GB
NATIONAL STANDARD
ICS 29.120.50
K 31
Replacing GB 16916.1-2003
Residual current operated circuit-breakers without
integral overcurrent protection for household and
similar uses (RCCB) - Part 1.General rules
(IEC 61008-1.2002, MOD)
Issued on. MAY 06, 2014
Implemented on. JUNE 29, 2015
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the PRC.
Table of Contents
Foreword... 6
1 Scope... 11
2 Normative references... 13
3 Terms and definitions... 14
3.1 Definition of flowing from the live parts into the earth current... 14
3.2 Definition relating to the excitation of residual current circuit breaker... 15
3.3 Definition relating to the operation and functions of residual current circuit-breakers
... 16
3.4 Definitions relating to the values and ranges of energizing quantities... 19
3.5 Definitions relating to the values and ranges of influencing quantities... 23
3.6 Definitions relating to terminals... 24
3.7 Conditions of operation... 27
3.8 Definitions relating to test... 28
3.9 Definitions relating to insulation coordination... 28
4 Classification... 30
4.1 In accordance with the method of operation... 31
4.2 In accordance with the type of installation... 31
4.3 In accordance with the number of poles and current paths... 31
4.4 In accordance with the possibility of adjusting the residual operating current... 32
4.5 In accordance with resistance to unwanted tripping due to voltage surge... 32
4.6 In accordance with the behavior in presence of DC components... 32
4.7 In accordance with time-delay (in presence of a residual current)... 33
4.8 In accordance with the protection against external influences... 33
4.9 In accordance with the method of mounting... 33
4.10 In accordance with the method of connection... 33
4.11 In accordance with the type of terminal... 34
5 RCCB characteristics... 34
5.1 Summary of characteristics... 34
5.2 Rated quantities and other characteristics... 35
5.3 Standard and preferred values... 37
5.4 Coordination with short-circuit protective device (SCPD)... 41
6 Marking and other product information... 42
7 Standard conditions for operation in service and for installation... 45
7.1 Standard conditions... 45
7.2 Conditions of installation... 46
7.3 Pollution degree... 46
8 Requirements for construction and operation... 46
8.1 Mechanical design... 46
8.2 Protection against electric shock... 56
8.3 Dielectric properties and isolation capacity... 57
8.4 Temperature-rise... 57
8.5 Operating characteristics... 58
8.6 Mechanical and electrical endurance... 58
8.7 Performance at short-circuit current... 58
8.8 Resistance to mechanical shock and impact... 58
8.9 Heat resistance... 58
8.10 resistance to abnormal heat and to fire... 59
8.11 Test device... 59
8.12 Technical requirements for RCCBs functionally dependent on supply voltage... 59
8.13 Behavior of RCCBs in case of overcurrent in the main circuit... 60
8.14 Behavior of RCCBs in the case of current surges caused by impulse voltages... 60
8.15 Behavior of RCCBs in case of earth fault currents comprising a DC component. 60
8.16 Reliability... 61
8.17 Electromagnetic compatibility (EMC)... 61
9 Test... 61
9.1 General... 61
9.2 Test conditions... 62
9.3 Test of indelibility of marking... 63
9.4 Test of reliability of screws, current-carrying parts and connections... 64
9.5 Test of reliability of screw-type terminals for external conductors... 65
9.6 Verification of protection against electric shock... 67
9.7 Test of dielectric properties... 68
9.8 Test of temperature-rise... 78
9.9 Verification of the operating characteristics... 79
9.10 Verification of mechanical and electrical endurance... 83
9.11 Verification of the behavior of the RCCB under short-circuit conditions... 84
9.12 Verification of resistance to mechanical shock and impact... 96
9.13 Test of resistance to heat... 101
9.14 Test of resistance to abnormal heat and to fire... 102
9.15 Verification of trip-free mechanism... 103
9.16 Verification of the operation of the test device at the limits of rated voltage... 104
9.17 Verification of behavior of RCCBs functionally dependent on supply voltage,
classified under 4.1.2, in case of failure of the supply voltage... 104
9.18 Verification of limiting values of the non-operating current under overcurrent
conditions... 106
9.19 Verification of behavior of RCCBs in case of current surges caused by impulse
voltages... 107
9.20 None... 109
9.21 Verification of the correct operation at residual currents with DC components... 109
9.22 Verification of reliability... 111
9.23 Verification of ageing properties of electronic parts... 114
9.24 Electromagnetic compatibility (EMC)... 115
9.25 Anti-rust test... 115
Appendix A (Normative) Test sequence and number of samples to be submitted
for certification purposes... 138
Appendix B (Normative) Determination of clearances and creepage distances
... 144
Appendix C (Normative) Arrangement for the detection of the emission of
ionized gases during short-circuit tests... 150
Appendix D (Normative) Routine tests... 153
Appendix E (Informative) Method of determination of short-circuit power-factor
... 155
Appendix F (Informative) Glossary of symbols... 157
Appendix G (Informative) Examples of terminal designs... 158
Appendix H (Informative) Comparison between ISO and AWG copper
conductors... 162
Appendix I (Informative) Follow-up testing program for RCCBs... 163
Appendix J (Informative) SCPDs for short-circuit tests... 168
Appendix K (Normative) Special requirements for RCCBs having screwless-
type terminals for connecting external copper conductors... 170
Appendix L (Normative) Special requirements for RCCB with flat quick-connect
terminations... 181
Appendix M (Normative) Special requirements for the RCCBs with screw type
terminal to connect external untreated aluminum conductor AND aluminum
screw type terminal to connect copper or aluminum conductors... 189
References... 201
Foreword
The entire technical content of this part is mandatory.
GB 16916 “Residual current operated circuit-breakers without integral
overcurrent protection for household and similar uses (RCCB)” is divided into 3
parts.
- Part 1.General rules;
- Part 21.Applicability of the general rules to RCCB functionality
independence of supply voltage;
- Part 22.Applicability of the general rules to the RCCB functionally
dependent on supply voltage.
This part is part 1 of GB 16916.
This part was drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB 16916.1-2003 “Residual current operated circuit-
breakers without integral overcurrent protection for household and similar uses
(RCCB) - General rules”.
As compared with GB 16916.1-2003, the main changes are as follows.
- In the Chapter 1 “Scope”, EXTEND the AC rated frequency from 50 Hz or
60 Hz to 50 Hz, 60 Hz, or 50/60 Hz, that is, adding the frequency range
which can be applied to both 50 Hz and 60 Hz; meanwhile, in 5.3.7
“Standard frequency”, ADD the standard frequency value 50/60 Hz;
- ADD 3.9 the definitions on insulation coordination;
- MODIFY the Table 1 and Table 2, in order to further define the limit values
of the A-type RCCB breaking time and not driving time;
- ADD the 5.3.13 the standard value of rated impulse withstand voltage (Uimp);
- In Chapter 6, MODIFY the marking of the rated frequency into. “rated
frequency; if RCCB is used for multiple frequencies (e.g. 50/60 Hz), it shall
mark it accordingly”; ADD that it may use the symbol to mark its application
for isolation”;
- In 8.1.1, DEFINE the requirements for the set method of RCCB with multi-
level setting values;
- In 8.1.2, ADD the requirements that it shall provide the isolation distance as
necessary to satisfy the isolation function when the RCCB is at
disconnected position, and PROVIDE one or two indication devices to
indicate the devices of the main contact;
- MODIFY the contents of 8.1.3, 9.7.7, 9.20 and Appendix B on insulation
coordination. ADD the requirements and verification of isolation function; in
Table 5, INCREASE the electrical gap between the open contacts of the
RCCB of the rated working voltage 230/400 V, 230 V and 400 V from 3 mm
to 4 mm; ADD 9.7.7 the verification of impulse withstand voltage (across
the electrical gap and across solid insulation) and the leakage current
between open contacts;
- MODIFY 8.1.4.4 the description methods on the materials of the current
carrying parts. Originally it clearly indicates that the material of the current
carrying part is copper and other alloys, AND it is currently modified to
indicate that it is metal, making examples that the material is copper and
other alloys. It is defined that when using iron alloy or appropriate coating
of iron alloy, it shall use the anti-rust test to verify whether it comply with the
anti-corrosion requirements. Therefore, ADD the new clause “9.25 Anti-rust
test”;
- MODIFY 9.5.1, specifying that the various types of conductors, hard
conductors (single core or twisted) and soft conductors shall be subjected
to the test, as well as the cross section range of the test conductors
corresponding to the conductor types; MODIFY the Table 12, defining the
tension force applied accordingly to the conductors of different cross
sections;
- ADD 9.7.7 “Verification of impulse withstand voltage (across the electrical
gap and across solid insulation) and the leakage current between open
contacts”, which includes the test methods of using impulse withstand
voltage to verify the electrical gap, the leakage current between the open
contacts (suitable for isolation), the insulation between open contacts, and
the basic insulation withstand voltage capability. INCLUDE also the original
9.20 “verification of insulation impulse withstand voltage performance” into
this test clause; ADJUST accordingly the test voltage value;
- MODIFY 9.9.2.3 a) test methods for the suddenly appeared residual
sinusoidal AC current. MODIFY the method of measuring the breaking time
into firstly close the switch S2 and then close the power switch S1.The
time measured by the test method includes the time to supply power to the
RCCB, making the measurement time more reasonable;
- MODIFY 9.9.2.4 the test procedure for the residual current in the range of
5IΔn to 500 A, from originally selecting 6 residual current values (5 A, 10 A,
20 A, 50 A, 100 A and 200 A) for test to arbitrarily selecting 2 residual current
values from the current range of 5 A ~ 200 A to conduct test, simplifying the
test procedures;
- In 9.11 the verification of RCCB working conditions under short-circuit
condition, MODIFY the test circuit and description method. COMBINE the
originally 5 short circuit tests respectively in single phase circuit, three
phase circuit, and three phase four wire circuit, respectively, into one short
circuit test diagram, and ADD an additional test circuit diagram and
impedance Z structure diagram for IT test; in 9.11.2.1 the general test
conditions, ADD item j). “oscillogram description”, defining the methods on
how to determine the external voltage, the recovery voltage, and the
expected short-circuit current, etc., and ADD Figure 30 “Example of short
circuit test setting oscillogram”;
- In 9.11.2.3, ADD a short circuit test to verify the applicability of RCCB in IT
systems;
- MODIFY 9.14 abnormal heat and flame test; MODIFY the number of
samples and application prohibition parts, the test is conducted on 3 test
specimens AND the glow-wire cannot be directly applied to the following
parts. terminals, arc chamber and electromagnetic trip part;
- In 9.17, DEFINE the test methods to verify the multi-phase power supply
requirements for the products as classified in 4.1.2.2;
- Further DEFINE the test methods to verify the correct action in 9.21.1.4
when the residual pulsating DC current is superimposed 0.006 A smooth
DC current;
- DELETE the original Appendix E “Test to verify the RCCB compliance with
electromagnetic compatibility (EMC) technical requirements, supplemental
test procedures, and test specimen quantity list”, INCLUDE the
corresponding contents into the newly added clause 9.24 “Electromagnetic
compatibility” as well as the newly added EMC test procedures H, I and J
in the Table A.1, Table A.2 and Table A.3 in Appendix A, including the test
items, the number of test specimens and the qualification judgment number,
etc.; and ADD T2.6 the test items such as “the common mode conducted
disturbance below 150 kHz frequency range”;
- ADD new Appendix. Specific requirements for RCCB with thread-less
terminals, Specific requirements for RCCB with flat fast connection
terminals, and Special requirements for RCCB with threaded connection
terminals connecting external untreated aluminum wires and the aluminum
threaded connection terminal to connect copper or aluminum conductors;
- RENUMBER the Appendix alphabetically.
This part, through the redrafting method, modifies and adopts the International
Electrotechnical Commission IEC 61008-1.2012 “Residual current operated
circuit-breakers without integral overcurrent protection for household and
similar uses (RCCB) - Part 1.General rules”.
The main differences between this part and IEC 61008-1.2012 are as follows.
- In this part, as for the RCCB for which the IΔn ≤ 0.03 A action function is
related to the power supply voltage AND which cannot be automatically
disconnected when the power supply voltage fails, RETAIN the technical
requirements that it can still act when the power supply voltage decreases
to 50 V as mentioned in GB 16916.1-2003.Therefore, ADD note 2 below
4.1.2.2, AND the test method shall follow 9.9.5.
- In paragraph 5 of 9.7.7.5 of IEC 61008-1.2012, it is mistakenly written as
follows. “Under conditions of 9.9.2.3, the RCCB shall trip when passing
through 1.25IΔn current...”; it is corrected in this part as follows. “Under
conditions of 9.9.2.3a), the RCCB shall trip when passing through 1.25IΔn
current...”. This mistake also appears in 9.19.2.3, 9.22.1.3a), 9.22.1.5,
9.22.2 and 9.23, which shall be modified accordingly.
- In 9.11.2.1, MODIFY “SCPD (SEE 3.4.8)” into “SPCD (SEE 3.4.10);
MODIFY “impedance L” into “impedance Z”.
- In Table A.1, MODIFY “9.1.5 Trip-free mechanism” into “9.15 Trip-free
mechanism”.
- In Table I.1 (Table IE.1 of IEC 61008-1.2012), MODIFY “9.20 Verification of
electrical gap by impulse withstand voltage” into “9.7.7.2 Verification of
electrical gap by impulse withstand voltage”; ADD the descriptions. “it shall
also conduct test between each pole in order”.
- As compared with IEC 61008-1.2012, in Table A.3 of Appendix A in this part,
ADD one group of 3 test specimens for the minimum In rating and maximum
IΔn rating to the E test procedure; whilst DELETE one group of 3 test
specimens for the minimum In rating and maximum IΔn rating from the G
test procedure. It is believed this is more reasonable, because it shall
respectively use the test specimens for maximum rating In and the minimum
rating In to conduct the short circuit test, whilst for the reliability test, it is
enough to conduct test against the test specimen of the maximum rating.
- RENUMBER the Appendix alphabetically.
This part specifies the terms and definitions, technical requirements and tests
of the various types of RCCBs. When used for a particular type of RCCB, this
part shall be used together with GB 16916.21-2008 “Residual current operated
circuit-breakers without integral overcurrent protection for household and
similar uses (RCCB) - Part 21.Applicability of the general rules to RCCB
functionality independence of supply voltage” and GB 16916.22-2008 Residual
current operated circuit-breakers without integral overcurrent protection for
household and similar uses (RCCB) - Part 22.Applicability of the general rules
to the RCCB functionally dependent on supply voltage”.
This part was proposed by China Electrical Equipment Industry Association.
This part shall be under the jurisdiction of the National Low Voltage Electrical
Apparatus Standardization Technical Committee (SAC/TC 189).
The responsible drafting organizations of this part. Shanghai Electric Appliance
Research Institute, SEARI Electric Technology Co., Ltd.
The participating drafting organizations of this part. Zhejiang Zhengtai Electric
Appliance Co., Ltd., Schneider Electric (China) Investment Co., Ltd., Shanghai
Liangxin Electric Appliance Co., Ltd., Shanghai Electrical Equipment Testing
Institute, Suzhou Electric Appliance Research Institute Co., Ltd., Shanghai
Noark Electric Co., Ltd., Zhejiang Delixi Electric Co., Ltd., Foretech Electric
(Jiangsu) Co., Ltd., Sassin International Electric Shanghai Co., Ltd., JBANG
Electric Co., Ltd., Huatong Electromechanical Co., Ltd., Shanghai People
Enterprise Group Wenzhou Electric Co., Ltd., Legrand Low-voltage Electric
(Wuxi) Co., Ltd., TOLLEA Technology Group Co., Ltd., Yuyao Jiarong
Electronic Appliance Co., Ltd., Zhejiang Garcia Electrical Appliance Co., Ltd.
The main drafters of this part. Zhou Jigang, Liu Jinyan, Gong Junchang.
The participating drafters of this part. Wang Xianfeng, Zhou Lei, Fan Jianguo,
Yi Ying, He Xiuming, Yan Pengbin, He Leru, Zhao He, Su Hanlin, Bo Guanyong,
Feng Xinmin, Jin Lingman, Fu Kai, Ye Xiangfa, Qian Jiacan, Wu Manhuai.
This part replaces the standard previously issued as follows.
- GB 16916.1-1997, GB 16916.1-2003.
Residual current operated circuit-breakers without
integral overcurrent protection for household and
similar uses (RCCB) - Part 1.General rules
1 Scope
This part of GB 16916 specifies the terms and definitions, technical
requirements and tests of various types of RCCB.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this document.
GB 2099.1 Plugs and socket-outlets for household and similar purposes -
Part 1.General requirements (GB 2099.1-2008, IEC 60884-1.2006, MOD)
3 Terms and definitions
The following terms and definitions apply to this document.
The terms “voltage” and “current” used in this part are RMSs.
It refers to the current of pulsating wave form which assumes, in each period
of the rated power frequency, the value 0 or a value not exceeding DC 0.006
A, during one single interval of time, expressed in angular measure, of at
least 150°.
4 Classification
The RCCB is classified as follows.
5 RCCB characteristics
The rated operational voltage (hereinafter referred to as the rated voltage) of
the RCCB is the voltage value assigned by the manufacturer to which its
performance is referred.
The rated impulse withstand voltage of the RCCB shall be equal to or higher
than the standard value of the rated impulse withstand voltage as specified in
Table 3.
6 Marking and other product information
Each RCCB shall be marked in a durable manner with all or part of the following
(for small product) data.
For RCCBs operated by means of two buttons, the push-button designed for
the opening operation only shall be RED and/or be marked with the symbol “O”.
Red shall not be used for any other push-button of the RCCB. If a push-button
is used for closing the contact AND is evidently identified as such, its depressed
position is sufficient indicate the closed position.
7 Standard conditions for operation in service and for installation
The RCCB complying with the requirements of this part shall be capable of
operating under the standard conditions as shown in Table 4.
8 Requirements for construction and operation
The moving contacts of all poles of multi-pole RCCB shall be so mechanically
coupled that all poles except for the switched neutral, if any, make and break
substantially together, whether operated manually or automatically.
If the cover is used as a guiding means for push-buttons, it shall not be possible
to remove the buttons from the outside of the RCCB.
9 Test
Unless otherwise specified, the RCCB is installed individually in accordance
with manufacturer’s instructions and in free air, at an ambient temperature
between 20 °C and 25 °C, AND is protected against undue external heating or
cooling.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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