AS/NZS 61009.1:1999

1 - AS/NZS 61009.1:1999 RESIDUAL CURRENT OPERATED CIRCUIT-BREAKERS WITH INTEGRAL OVERCURRENT PROTECTION FOR HOUSEHOLD AND SIMILAR...
4 - PREFACE
7 - CONTENTS
9 - 1 Scope
10 - 2 Normative references
12 - 3 Definitions
12 - 3.1 Definitions relating to currents flowing from live parts to earth
12 - 3.1.1 earth fault current:
12 - 3.1.2 earth leakage current:
12 - 3.1.3 pulsating direct current:
12 - 3.1.4 current delay angle:
12 - 3.2 Definitions relating to the energization of a residual current circuit-breaker
12 - 3.2.1 energizing quantity:
12 - 3.2.2 energizing input-quantity:
12 - 3.2.3 residual current
12 - 3.2.4 residual operating current:
12 - 3.2.5 residual non-operating current:
13 - 3.3 Definitions relating to the operation and functions of residual current circuit-breakers
13 - 3.3.1 switching device
13 - 3.3.2 mechanical switching device
13 - 3.3.3 fuse
13 - 3.3.4 circuit-breaker
13 - 3.3.5 residual current operated circuit-breaker:
13 - 3.3.6 residual current operated circuit-breaker without integral overcurrent protection (RCCB):
13 - 3.3.7 residual current operated circuit-breaker with integral overcurrent protection (RCBO):
13 - 3.3.8 RCBOs functionally independent of line voltage:
13 - 3.3.9 RCBOs functionally dependent on line voltage:
13 - 3.3.10 break time of a RCBO:
13 - 3.3.11 limiting non-actuating time:
13 - 3.3.12 time-delay RCBO:
14 - 3.3.13 closed position
14 - 3.3.14 open position
14 - 3.3.15 pole:
14 - 3.3.16 uninterrupted neutral:
14 - 3.3.17 main circuit (of a RCBO):
14 - 3.3.18 control circuit (of a RCBO):
14 - 3.3.19 auxiliary circuit (of a RCBO)
14 - 3.3.20 RCBO Type AC:
14 - 3.3.21 RCBO Type A:
14 - 3.3.22 test device:
15 - 3.4 Definitions relating to values and ranges of energizing quantities
15 - 3.4.1 rated value
15 - 3.4.2 overcurrent:
15 - 3.4.3 prospective current:
15 - 3.4.4 prospective peak current:
15 - 3.4.5 maximum prospective peak current (of an a.c. circuit):
15 - 3.4.6 short-circuit (making and breaking) capacity:
15 - 3.4.7 breaking current
16 - 3.4.8 applied voltage
16 - 3.4.9 recovery voltage
16 - 3.4.10 opening time:
16 - 3.4.11 Arcing time
16 - 3.4.12 break time
16 - 3.4.13 I2t (Joule integral)
17 - 3.4.14 I2t characteristic of a RCBO:
17 - 3.4.15 Co-ordination between overcurrent protective devices in series
17 - 3.4.16 conventional non-tripping current (Int)
17 - 3.4.17 conventional tripping current (It)
17 - 3.4.18 instantaneous tripping current:
17 - 3.4.19 clearance
17 - 3.4.20 creepage distance
18 - 3.4.21 Non-operating overcurrents in the main circuit
18 - 3.4.22 residual making and breaking capacity:
18 - 3.4.23 limiting values (Ux and Uy) of the line voltage for RCBOs functionally dependent on line voltage
18 - 3.5 Definitions relating to values and ranges of influencing quantities
18 - 3.5.1 influencing quantity:
18 - 3.5.2 reference value of an influencing quantity:
18 - 3.5.3 reference conditions of influencing quantities:
18 - 3.5.4 range of an influencing quantity:
18 - 3.5.5 extreme range of an influencing quantity:
19 - 3.5.6 ambient air temperature
19 - 3.5.7 reference ambient air temperature:
19 - 3.6 Definitions relating to terminals
19 - 3.6.1 terminal:
19 - 3.6.2 screw-type terminal:
19 - 3.6.3 pillar terminal:
19 - 3.6.4 screw terminal:
19 - 3.6.5 stud terminal:
19 - 3.6.6 saddle terminal:
19 - 3.6.7 lug terminal:
20 - 3.6.8 screwless terminal:
20 - 3.6.9 tapping screw:
20 - 3.6.10 thread forming tapping screw:
20 - 3.6.11 thread cutting tapping screw:
20 - 3.7 Conditions of operation
20 - 3.7.1 operation:
20 - 3.7.2 closing operation
20 - 3.7.3 opening operation
20 - 3.7.4 dependent manual operation
20 - 3.7.5 independent manual operation
20 - 3.7.6 trip-free RCBO
21 - 3.7.7 operating cycle
21 - 3.7.8 sequence of operations:
21 - 3.7.9 uninterrupted duty:
21 - 3.8 Constructional elements
21 - 3.8.1 main contact
21 - 3.8.2 arcing contact:
21 - 3.8.3 control contact
21 - 3.8.4 auxiliary contact
21 - 3.8.5 release
21 - 3.8.6 overcurrent release
21 - 3.8.7 inverse time-delay overcurrent release
21 - 3.8.8 direct overcurrent release
22 - 3.8.9 overload release
22 - 3.8.10 conductive part
22 - 3.8.11 exposed conductive part
22 - 3.9 Tests
22 - 3.9.1 type test
22 - 3.9.2 routine tests
22 - 4 Classification
22 - 4.1 According to the method of operation
22 - 4.1.1 RCBO functionally independent of line voltage (see 3.3.8)
22 - 4.1.2 RCBO functionally dependent on line voltage (see 3.3.9)
22 - 4.2 According to the type of installation
23 - 4.3 According to the number of poles and current paths
23 - 4.4 According to the possibility of adjusting the residual operating current
23 - 4.5 According to resistance to unwanted tripping due to voltage surges
23 - 4.6 According to behaviour in presence of d.c. components
23 - 4.7 According to time-delay (in presence of a residual current)
23 - 4.8 According to the protection against external influences
23 - 4.9 According to the method of mounting
24 - 4.10 According to the method of connection
24 - 4.11 According to the instantaneous tripping current (see 3.4.18)
24 - 4.12 According to the I2t characteristic
24 - 5 Characteristics of RCBOs
24 - 5.1 Summary of characteristics
25 - 5.2 Rated quantities and other characteristics
25 - 5.2.1 Rated voltage
25 - 5.2.2 Rated current
25 - 5.2.3 Rated residual operating current
25 - 5.2.4 Rated residual non-operating current
25 - 5.2.5 Rated frequency
25 - 5.2.6 Rated short-circuit capacity
26 - 5.2.7 Rated residual making and breaking capacity
26 - 5.2.8 RCBO type S
26 - 5.2.9 Operating characteristics in case of residual currents with d.c. components
26 - 5.2.10 Insulation co-ordination including clearances and creepage distances
26 - 5.3 Standard and preferred values
26 - 5.3.1 Preferred values of rated voltage
27 - 5.3.2 Preferred values of rated current
27 - 5.3.3 Standard values of rated residual operating current
27 - 5.3.4 Standard value of residual non-operating current
27 - 5.3.5 Standard values of rated frequency
27 - 5.3.6 Values of rated short-circuit capacity
28 - 5.3.7 Minimum value of the rated residual making and breaking capacity
28 - 5.3.8 Standard values of break time and non-actuating time for operation under residual current conditions
28 - 5.3.9 Standard ranges of overcurrent instantaneous tripping
29 - 6 Marking and other product information
31 - 7 Standard conditions for operation in service and for installation
31 - 7.1 Standard conditions
31 - 7.2 Conditions of installation
32 - 8 Requirements for construction and operation
32 - 8.1 Mechanical design
32 - 8.1.1 General
32 - 8.1.2 Mechanism
33 - 8.1.3 Clearances and creepage distances (see annex B)
35 - 8.1.4 Screws, current-carrying parts and connections
36 - 8.1.5 Terminals for external conductors
38 - 8.1.6 Non-interchangeability
38 - 8.2 Protection against electric shock
39 - 8.3 Dielectric properties
39 - 8.4 Temperature-rise
39 - 8.4.1 Temperature-rise limits
40 - 8.4.2 Ambient air temperature
40 - 8.5 Operating characteristics
40 - 8.5.1 Under residual current conditions
40 - 8.5.2 Under overcurrent conditions
42 - 8.6 Mechanical and electrical endurance
42 - 8.7 Performance at short-circuit currents
42 - 8.8 Resistance to mechanical shock and impact
42 - 8.9 Resistance to heat
43 - 8.10 Resistance to abnormal heat and to fire
43 - 8.11 Test device
43 - 8.12 Requirements for RCBOs functionally dependent on line voltage
44 - 8.13 Behaviour of RCBOs in case of a single-phase overcurrent through a three-pole or four-pole RCBO
44 - 8.14 Resistance of RCBOs to unwanted tripping due to current surges caused by impulse voltages
44 - 8.15 Behaviour of RCBOs in case of earth fault currents comprising a d.c. component
44 - 8.16 Reliability
45 - 9 Tests
45 - 9.1 General
45 - 9.1.1 The characteristics of RCBOs are checked by means of type tests.
45 - 9.1.2 For certification purposes, type tests are carried out in test sequences
46 - 9.1.3 Routine tests to be carried out by the manufacturer on each device are given in annex D.
46 - 9.2 Test conditions
47 - 9.3 Test of indelibility of marking
47 - 9.4 Test of reliability of screws, current-carrying parts and connections
48 - 9.5 Test of reliability of terminals for external conductors
50 - 9.6 Verification of protection against electric shock
50 - 9.7 Test of dielectric properties
50 - 9.7.1 Resistance to humidity
51 - 9.7.2 Insulation resistance of the main circuit
52 - 9.7.3 Dielectric strength of the main circuit
53 - 9.7.4 Insulation resistance and dielectric strength of auxiliary circuits
54 - 9.7.5 Secondary circuit of detection transformers
54 - 9.7.6 Capability of control circuits connected to the main circuit in respect of withstanding high d.c. voltages due to insulati
54 - 9.8 Test of temperature-rise
54 - 9.8.1 Ambient air temperature
54 - 9.8.2 Test procedure
55 - 9.8.3 Measurement of the temperature-rise of parts
55 - 9.8.4 Temperature-rise of a part
55 - 9.9 Verification of the operating characteristic
55 - 9.9.1 Verification of the operating characteristic under residual current conditions
57 - 9.9.2 Verification of the operating characteristic under overcurrent conditions
58 - 9.10 Verification of mechanical and electrical endurance
58 - 9.10.1 General test conditions
59 - 9.10.2 Test procedure
59 - 9.10.3 Condition of the RCBO after test
60 - 9.11 Verification of the trip-free mechanism
60 - 9.11.1 General test conditions
60 - 9.11.2 Test procedure
60 - 9.12 Short-circuit tests
60 - 9.12.1 General conditions for test
61 - 9.12.2 Test circuit for short-circuit performance
63 - 9.12.3 Values of test quantities
63 - 9.12.4 Tolerances on test quantities
63 - 9.12.5 Power factor of the test circuit
64 - 9.12.6 Measurement and verification of I
64 - 9.12.7 Calibration of the test circuit
64 - 9.12.8 Interpretation of records
65 - 9.12.9 Condition of the RCBO for test
66 - 9.12.10 Behaviour of the RCBO during short-circuit tests
66 - 9.12.11 Test procedure
70 - 9.12.12 Verification of the RCBO after short-circuit test
70 - 9.12.13 Verification of the rated residual making and breaking capacity (I Dm )
71 - 9.13 Verification of resistance to mechanical shock and impact
71 - 9.13.1 Mechanical shock
72 - 9.13.2 Mechanical impact
74 - 9.14 Test of resistance to heat
75 - 9.15 Test of resistance to abnormal heat and to fire
76 - 9.16 Verification of the operation of the test device at the limits of rated voltage
77 - 9.17 Verification of the behaviour of RCBOs functionally dependent on line voltage, classified under 4.1.2.1, in case of failure
77 - 9.17.1 Determination of the limiting value of the line voltage (U x )
77 - 9.17.2 Verification of the automatic opening in case of failure of the line voltage
78 - 9.17.3 Verification of the correct operation, in presence of a residual current, for RCBOs opening with delay in case of failure
78 - 9.17.4 Verification of correct operation of RCBOs with three or four current paths, in presence of a residual current, the neutr
78 - 9.17.5 Verification of the reclosing function of automatically reclosing RCBOs
78 - 9.18 Verification of the limiting value of overcurrent in case of a single-phase load through a three-pole or four-pole RCBO
79 - 9.19 Verification of resistance against unwanted tripping due to current surges caused by impulse voltages
79 - 9.19.1 Current surge test for all RCBOs (0,5 µs/100 kHz ring wave test)
79 - 9.19.2 Verification of higher resistance against unwanted tripping (8/20 µs surge current test, applicable to S-type RCBOs only)
80 - 9.20 Verification of resistance of the insulation against an impulse voltage
81 - 9.21 Verification of the behaviour of RCBOs in case of an earth fault current comprising
81 - 9.21.1 Type A residual current devices
82 - 9.22 Verification of reliability
82 - 9.22.1 Climatic test
84 - 9.22.2 Test with temperature of 40 °C
85 - 9.23 Verification of ageing of electronic components
111 - Annex A - Test sequence and number of samples to be submitted for certification purposes
111 - A.1 Test sequences
112 - A.2 Number of samples to be submitted for full test procedure
112 - A.3 Number of samples to be submitted for simplified test procedures in case of submitting simultaneously a range of RCBOs of th
116 - Annex B - Determination of clearances and creepage distances
119 - Annex C - Arrangement for the detection of the emission of ionized gases during short-circuit tests
122 - Annex D - Routine tests
122 - D.1 Tripping test
122 - D.2 Electric strength test
122 - D.3 Performance of the test device
123 - Annex E - Special requirements for auxiliary circuits for safety extra-low voltage
124 - Annex F - Co-ordination between RCBOs and separate fuses associated in the same circuit
125 - Annex G - Additional requirements and tests for RCBOs consisting of a circuit-breaker and a residual current unit designed .....
125 - G.1 General
125 - G.2 Definitions
125 - G.3 Marking and other product information
127 - G.4 Constructional requirements
128 - G.5 Type tests and verifications
128 - G.6 Routine tests on the r.c. unit
129 - Annex H - List of tests, additional test sequences and numbers of samples for verification of compliance of RCBOs with the....
129 - H.1 EMC tests already included in the product standard
130 - H.2 Additional tests of EMC product family standards to be applied
131 - Annex IA - Methods of determination of short-circuit power-factor
131 - Method I - Determination from d.c. components
132 - Method II - Determination with pilot generator
133 - Annex IB - Glossary of symbols
134 - Annex IC - Examples of terminals
138 - Annex ID - Correspondence between ISO and AWG copper conductors
139 - Annex IE - Follow-up testing programme for RCBOs
139 - IE.1 General
139 - IE.2 Follow-up testing programme
143 - ANNEX ZZ - VARIATIONS TO IEC 61009-1:1996 FOR APPLICATION IN AUSTRALIA AND NEW ZEALAND
143 - ZZ1 INTRODUCTION
143 - ZZ2 VARIATIONS

Specifies requirements for current operated circuit-breakers with integral overcurrent protection with rated voltages not exceeding 440 V a.c., rated currents not exceeding 125 A and rated short-circuit capacities not exceeding 25000 A for operation at 50 Hz or 60 Hz. This Standard is technically equivalent to and has been reproduced from IEC 61009-1:1996.

This International Standard applies to residual current operated circuit-breakers with integral overcurrent protection functionally independent of, or functionally dependent on, line voltage for household and similar uses (hereafter referred to as RCBOs), for rated voltages not exceeding 440 V a.c., rated currents not exceeding 125 A and rated short-circuit capacities not exceeding 25 000 A for operation at 50 Hz or 60 Hz.These devices are intended to protect people against indirect contact, the exposed conductive parts of the installation being connected to an appropriate earth electrode and to protect against overcurrents the wiring installations of buildings and similar applications. 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.RCBOs having a rated residual operating current not exceeding 30 mA are also used as a means for additional protection in the case of failure of the protective means against electric shock.This standard applies to devices performing simultaneously the function 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, and also of performing the function of making, carrying and breaking overcurrents under specified conditions.NOTES1 The content of the present standard related to the operation under residual current conditions is based on IEC 1008.The content of the present standard related to protection against overcurrents is based on IEC 898.2 RCBOs are essentially intended to be operated by uninstructed persons and designed not to require maintenance. They may be submitted for certification purposes.3 Installation and application rules of RCBOs are given in IEC 364.RCBOs of the general type are resistant to unwanted tripping, including the case where surge voltages (as a result of switching transients or induced by lightning) cause loading currents in the installation without occurrence of flashover.RCBOs of the S type are considered to be sufficiently proof against unwanted tripping even if the surge voltage causes a flashover and a follow-on current occurs.NOTES4 Surge arresters installed downstream of the general type of RCBOs and connected in common mode may cause unwanted tripping.5 RCBOs within the scope of the present standard are considered as suitable for isolation (see 8.1.3).Special precautions (e.g. lightning arresters) 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 6 For RCBOs having a degree of protection higher than IP20 special constructions may be required.This standard also applies to RCBOs obtained by the assembly of an adaptable residual current device with a circuit-breaker. The mechanical assembly shall be effected in the factory by the manufacturer, or on site, in which case the requirements of annex G shall apply. It also applies to RCBOs having more than one rated current, provided that the means for changing from one discrete rating to another is not accessible in normal service and that the rating cannot be changed without the use of a tool.Supplementary requirements may be necessary for RCBOs of the plug-in type.Particular requirements are necessary for RCBOs incorporated in or intended only for association with plugs and socket-outlets or with appliance couplers for household and similar general purposes.NOTE 7 For the time being, for RCBOs incorporated in, or intended only for plugs and socket-outlets, the requirements of this standard in conjunction with the requirements of IEC 884-1 may be used, as far as applicable.This standard does not apply to: RCBOs intended to protect motors, RCBOs the current setting of which is adjustable by means accessible to the user in normal service.The requirements of this standard apply for normal environmental conditions (see 7.1). Additional requirements may be necessary for RCBOs used in locations having severe environmental conditions.RCBOs including batteries are not covered by this standard.A guide for the co-ordination of RCBOs with fuses is given in annex F.

First published in part as part of AS C111-1938.
Redated 1946.
Second edition 1951.
Third edition 1956.
Fourth edition 1968.
Revised and redesignated AS 3111-1974.
AS 3190 first published 1974.
Second edition AS 3111-1980.
Second edition AS 3190-1980.
Third edition AS 3111-1983.
Third edition AS 3190-1983.
Fourth edition AS 3190-1990.
Fifth edition 1994.
Fourth edition AS 3111-1994.
AS 3111-1994 and AS 3190-1994 jointly revised, amalgamated and redesignated in part as AS/NZS 61009.1:1999.