AS/NZS 3175.1:1994

1 - AS/NZS 3175.1:1994 APPROVAL AND TEST SPECIFICATION - RESIDUAL CURRENT-OPERATED CIRCUIT-BREAKERS WITHOUT INTEGRAL OVERCURRENT
4 - PREFACE
6 - CONTENTS
8 - Introduction
8 - 1. Scope
9 - 2. Normative references
10 - 3. Definitions
10 - 3.1 Definitions relating to currents flowing from live parts to earth
10 - 3.2 Definitions relating to the energization of a residual current circuit-breaker
11 - 3.3 Definitions relating to the operation and to the functions of residual current circuit -breakers
13 - 3.4 Definitions relating to values and ranges of energizing quantities
15 - 3.5 Definitions relating to values and ranges of influencing quantities
15 - 3.6 Definitions relating to terminals
17 - 3.7 Conditions of operation
18 - 3.8 Test
18 - 4. Classification
18 - 4.1 According to the method of operation
18 - 4.2 According to the type of installation
19 - 4.3 According to the number of poles and current paths
19 - 4.4 According to the possibility of adjusting the residual operating current
19 - 4.5 According to resistance to unwanted tripping due to voltage surges
19 - 4.6 According to behaviour in presence of d.c. components
19 - 4.7 According to time-delay (in presence of a residual current)
19 - 4.8 According to the protection against external influences
19 - 4.9 According to the method of mounting
19 - 4.10 According to the method of connection
20 - 5. Characteristics of RCCB’s
20 - 5.1 Summary of characteristics
20 - 5.2 Rated quantities and other characteristics
22 - 5.3 Standard and preferred values
26 - 5.4 Coordination with short-circuit protective devices (SCPD’ s)
27 - 6. Marking and other product information
29 - 7. Standard conditions for operation in service and for installation
29 - 7.1 Standard conditions
29 - 7.2 Conditions of installation
30 - 8. Requirements for construction and operation
30 - 8.1 Mechanical design
37 - 8.2 Protection against electric shock
37 - 8.3 Dielectric properties
38 - 8.4 Temperature-rise
39 - 8.5 Operating characteristic
39 - 8.6 Mechanical and electrical endurance
39 - 8.7 Performance at short-circuit currents
39 - 8.8 Resistance to mechanical shock and impact
39 - 8.9 Resistance to heat
39 - 8.10 Resistance to abnormal heat and to fire
39 - 8.11 Test device
40 - 8.12 Requirements for RCCB’s functionally dependent on line voltage
40 - 8.13 Behaviour of RCCB’s in case of overcurrents in the main circuit
40 - 8.14 Resistance of RCCB’ s against unwanted tripping due to impulse voltages
41 - 8.15 Behaviour of RCCB’s in case of earth fault currents comprising a d.c. component
41 - 8.16 Reliability
41 - 9. Tests
41 - 9.1 General
42 - 9.2 Test conditions
43 - 9.3 Test of indelebility of marking
43 - 9.4 Test of reliability of screws, current-carrying parts and connections
44 - 9.5 Test of reliability of terminals for external conductors
46 - 9.6. Verifiation of protection against electric shock
47 - 9.7 Test of dielectric properties
51 - 9.8 Test of temperature-rise
52 - 9.9 Verification of the operating characteristic
54 - 9.10 Verification of mechanical and electrical endurance
56 - 9.11 Verification of the behaviour of the RCCB under short-circuit conditions
67 - 9.12 Verification of resistance to mechanical shock and impact
70 - 9.13 Test of resistance to heat
72 - 9.14 Test of resistance to abnormal heat and to fire
73 - 9.15 Verification of the trip-free mechanism
73 - 9.16 Verification of the operation of the test device at the limits of rated voltage
74 - 9.17 Verification of the behaviour of RCCB’ s functionall y dependent on line voltage, classified under 4.1.2.1,
75 - 9.18 Verification of limiting values of the non-operating current under overcurrent conditions
76 - 9.19 Verification of resistance against unwanted tripping due to an impulse voltage
76 - 9.20 Verification of resistance of the insulation against an impulse voltage
78 - 9.21 Verification of the correct operation at residual currents with d.c. components
79 - 9.22 Verification of reliability
82 - 9.23 Verification of aging of el ectronic components
108 - Annex A Test sequence and number of samples to be submitted for certification purposes
108 - A.1 Test sequences
109 - A.2 Number of samples to be submitted for full test procedure
109 - A.3. Number of samples to be submitted for simplified test procedures in case of submitting simultaneously a range of RCCB’s
112 - Annex B Determination of clearances and creepage distances
115 - Annex C Arrangement for the detection of the emission of ionized gases during short-circuit tests
118 - Annex D Routine tests
118 - D.1 Tripping test
118 - D.2 Electric strength test
118 - D.3 Performance of the test device
119 - Annex IA Methods of determination of short-circuit power-factor
119 - Method I - Determination from d. c. components
120 - Methods II - Determination with pilot generator
121 - Annex IB Glossary of symbols
122 - Annex IC Examples of terminal designs
126 - Annex ID Correspondence between ISO and AWG copper conductors

Specifies essential safety requirements for residual current-operated circuit-breakers intended for household and similar uses for approval and test purposes. This Standard is technically equivalent to and reproduced from IEC 1008-1:1990, including Amendment 1:1992. In Australia This Standard will replace AS 3190-1994, in part, ten years from date of publication.

This International Standard applies to residual current operated circuit-breakers functionally independent of, or functionally dependent on, line voltage, for household and similar uses, not incorporating overcurrent protection (hereafter referred to as RCCB's), for rated voltages not exceeding 440 V a.c. and rated currents not exceeding 125 A, intended principally for protection against shock-hazard.These devices are intended to protect persons against indirect contact, the exposed conductive parts of the installation being connected to an appropriate earth electrode. They may be used to provide protection against fire hazards due to a persistent earth fault current, without the operation of the overcurrent protective device.RCCB's having a rated residual operating current not exceeding 30 mA are also used as a means for additional protection in case of failure of the protective means against electric shock.This standard applies to 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.NOTES1 The requirements for RCCB's are in line with the general requirements of IEC 755. RCCB's are essentially intended to be operated by uninstructed persons and designed not to require maintenance. They may be submitted for certification purposes.2 Installation and application rules of RCCB's are given in IEC 364.NOTE 201 The adoption of IEC Standards for portable and socket-outlet devices is under consideration. However, until they are published, this Standard and AS/NZS 3112, for socket-outlet devices, and this Standard and AS 3190, for portable devices, may be used by testing to selected clauses.3 RCCB's within the scope of the present standard are considered as suitable for isolation (see 8.1.3).Special precautions (e.g. lightningarresters) may be necessary when excessive overvoltages are likely to occur on the supply side (for example in the case of supply through overhead lines) (see IEC 364-4-443).NOTE 4 - For RCCB's having a degree of protection higher than IP20 special constructions may be required.Particular requirements are necessary for- Residual current operated circuit-breakers with integral overcurrent protection (see IEC 1009);- RCCB's incorporated in or intendedonly for association with plugs and socket-outlets or with appliance couplers for household or similar general purposes.NOTE 5 - For the time being, for RCCB's incorporated in, or intended only for socket-outlets or plugs, the requirements of this standard in conjunction with the requirements of IEC 884-1 may be used as far as applicable.The requirements of this standard apply for normal environmentalconditions (see 7.1) . Additional requirements may be necessary for RCCB's used in locations having severe environmental conditions.RCCB's including batteries are not covered by this standard.

First published as Joint Standard AS/NZS 3175.1:1994.