BS EN 60898-1:2019+A11:2024
$215.11
Electrical accessories. Circuit-breakers for overcurrent protection for household and similar installations – Circuit-breakers for a.c. operation
Published By | Publication Date | Number of Pages |
BSI | 2024 | 154 |
PDF Catalog
PDF Pages | PDF Title |
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2 | undefined |
16 | CONTENTS |
22 | FOREWORD |
24 | 1 Scope |
25 | 2 Normative references |
26 | 3 Terms and definitions 3.1 Devices |
27 | 3.2 General terms |
29 | 3.3 Constructional elements |
32 | 3.4 Conditions of operation 3.5 Characteristic quantities |
37 | 3.6 Definitions related to insulation co-ordination |
39 | 4 Classification 4.1 General 4.2 According to the number of poles: 4.3 According to the protection against external influences: 4.4 According to the method of mounting: 4.5 According to the methods of connection 4.5.1 According to the fixation system: |
40 | 4.5.2 According to the type of terminals: 4.6 According to the instantaneous tripping current (see 3.5.17) 4.7 According to the I2t characteristic 5 Characteristics of circuit-breakers 5.1 List of characteristics 5.2 Rated quantities 5.2.1 Rated voltages |
41 | 5.2.2 Rated current (In) 5.2.3 Rated frequency 5.2.4 Rated short-circuit capacity (Icn) 5.3 Standard and preferred values 5.3.1 Preferred values of rated voltage |
42 | 5.3.2 Preferred values of rated current 5.3.3 Standard values of rated frequency 5.3.4 Values of rated short-circuit capacity Tables Table 1 – Preferred values of rated voltage |
43 | 5.3.5 Standard ranges of instantaneous tripping 5.3.6 Standard values of rated impulse withstand voltage (Uimp) Table 2 – Ranges of instantaneous tripping |
44 | 6 Marking and other product information Table 3 – Rated impulse withstand voltage as a function of the nominal voltage of the installation |
47 | 7 Standard conditions for operation in service 7.1 General 7.2 Ambient air temperature range 7.3 Altitude 7.4 Atmospheric conditions 7.5 Conditions of installation 7.6 Pollution degree 8 Requirements for construction and operation 8.1 Mechanical design 8.1.1 General |
48 | 8.1.2 Mechanism |
49 | 8.1.3 Clearances and creepage distances and solid insulation |
50 | Table 4 – Minimum clearances and creepage distances |
52 | 8.1.4 Screws, current-carrying parts and connections 8.1.5 Terminals for external conductors |
53 | Table 5 – Connectable cross-sections of copper conductors for screw-type terminals |
55 | 8.1.6 Non-interchangeability 8.1.7 Mechanical mounting of plug-in type circuit-breakers 8.2 Protection against electric shock |
56 | 8.3 Dielectric properties and isolating capability 8.3.1 General 8.3.2 Dielectric strength at power frequency 8.3.3 Isolating capability 8.3.4 Dielectric strength at rated impulse withstand voltage (Uimp) 8.4 Temperature-rise 8.4.1 Temperature-rise limits |
57 | 8.4.2 Ambient air temperature 8.5 Uninterrupted duty 8.6 Automatic operation 8.6.1 Standard time-current zone Table 6 – Temperature-rise values |
58 | 8.6.2 Conventional quantities 8.6.3 Tripping characteristic Table 7 – Time-current operating characteristics |
59 | 8.7 Mechanical and electrical endurance 8.8 Performance at short-circuit currents 8.9 Resistance to mechanical shock and impact |
60 | 8.10 Resistance to heat 8.11 Resistance to abnormal heat and to fire 8.12 Resistance to rusting 8.13 Power loss 8.14 Electromagnetic immunity 8.15 Electromagnetic emission Table 8 – Maximum power loss per pole |
61 | 9 Tests 9.1 Type tests and test sequences 9.2 Test conditions Table 9 – List of type tests |
62 | 9.3 Test of indelibility of marking Table 10 – Cross-sectional areas (S) of test copper conductors corresponding to the rated currents |
63 | 9.4 Test of reliability of screws, current-carrying parts and connections |
64 | 9.5 Tests of reliability of screw-type terminals for external copper conductors Table 11 – Screw thread diameters and applied torques |
65 | Table 12 – Pulling forces |
66 | 9.6 Test of protection against electric shock 9.7 Test of dielectric properties 9.7.1 Resistance to humidity |
67 | 9.7.2 Insulation resistance of the main circuit |
68 | 9.7.3 Dielectric strength of the main circuit 9.7.4 Insulation resistance and dielectric strength of auxiliary circuits |
69 | 9.7.5 Verification of impulse withstand voltages (across clearances and across solid insulation) and of leakage current across open contacts Table 13 – Test voltage of auxiliary circuits |
71 | Table 14 – Test voltage for verification of impulse withstand voltage Table 15 – Test voltage for verifying the suitability for isolation, referred to the rated impulse withstand voltage of the circuit breakersand the altitude where the test is carried out |
72 | 9.8 Test of temperature-rise and measurement of power loss 9.8.1 Ambient air temperature 9.8.2 Test procedure 9.8.3 Measurement of the temperature of parts 9.8.4 Temperature-rise of a part 9.8.5 Measurement of power loss |
73 | 9.9 28-day test 9.10 Test of tripping characteristic 9.10.1 General 9.10.2 Test of time-current characteristic 9.10.3 Test of instantaneous tripping, of correct opening of the contacts and of the trip-free function |
75 | 9.10.4 Test of effect of single-pole loading on the tripping characteristic of multipole circuit-breakers 9.10.5 Test of effect of ambient temperature on the tripping characteristic 9.11 Verification of mechanical and electrical endurance 9.11.1 General test conditions |
76 | 9.11.2 Test procedure 9.11.3 Condition of the circuit-breaker after test 9.12 Short-circuit tests 9.12.1 General |
77 | 9.12.2 Values of test quantities 9.12.3 Tolerances on test quantities Table 16 – Applicability of short-circuit tests |
78 | 9.12.4 Test circuit for short-circuit performance |
79 | 9.12.5 Power factor of the test circuit 9.12.6 Measurement and verification of I2t and of the peak current (Ip) 9.12.7 Calibration of the test circuit Table 17 – Power factor ranges of the test circuit |
80 | 9.12.8 Interpretation of records 9.12.9 Condition of the circuit-breaker for test |
81 | 9.12.10 Behaviour of the circuit-breaker during short-circuit tests |
82 | 9.12.11 Test procedure |
84 | Table 18 – Ratio k between service short-circuit capacity (Ics) and rated short-circuit capacity (Icn) Table 19 – Test procedure for Ics in the case of single- and two-pole circuit-breakers |
85 | Table 20 – Test procedure for Ics in the case of three- and four-pole circuit-breakers Table 21 – Test procedure for Ics in the case of three-phase tests for single-pole circuit-breakers of rated voltage 230/400 V |
86 | Table 22 – The test procedure for Icn Table 23 – Test procedure for Icn in the case of three-phase tests for single-pole circuit-breakers of rated voltage 230/400 V |
87 | 9.12.12 Verification of the circuit breaker after short circuit tests.: 9.13 Mechanical stresses 9.13.1 Mechanical shock |
88 | 9.13.2 Resistance to mechanical stresses and impact |
91 | 9.14 Test of resistance to heat |
92 | 9.15 Resistance to abnormal heat and to fire |
93 | 9.16 Test of resistance to rusting |
94 | Figures Figure 1 – Thread forming tapping screw (3.3.22) Figure 2 – Thread cutting tapping screw (3.3.23) Figure 3 – Typical diagram for all short circuit tests except for 9.12.11.2.2) |
95 | Figure 4 – Typical diagram for short circuit tests according to 9.12.11.2.2) Figure 5 – Detail of impedance Z and Z1 |
97 | Figure 6 – Example of short-circuit making or breaking test record in the case of a single-pole device on single phase AC |
98 | Figure 7 – Mechanical shock test apparatus (9.13.1) |
99 | Figure 8 – Standard test finger (9.6) |
100 | Figure 9 – Mechanical impact test apparatus (9.13.2) |
101 | Figure 10 – Striking element for pendulum for mechanical impact test apparatus (9.13.2) |
102 | Figure 11 – Mounting support for mechanical impact test (9.13.2) |
103 | Figure 12 – Example of mounting of a flush-type circuit-breaker for mechanical impact test (9.13.2) |
104 | Figure 13 – Example of mounting of a panel board type circuit-breaker for mechanical impact test (9.13.2) |
105 | Figure 14 – Application of force for mechanical test ona rail-mounted circuit-breaker (9.13.2.4) Figure 15 – Ball-pressure test apparatus |
106 | Figure 16 – Example of application of force for mechanical test on two-pole plug-in circuit-breaker, the holding in position of which depends solely on the plug-in connections (9.13.2.5) Figure 17 – Diagrammatic representation (9.15) |
107 | Annexes Annex A (informative) Determination of short-circuit power factor |
108 | Annex B (normative) Determination of clearances and creepage distances |
112 | Figure B.1 – Examples of methods of measuring creepage distances and clearances |
113 | Annex C (normative) Test sequences and number of samples |
114 | Table C.1 – Test sequences |
115 | Table C.2 – Number of samples for full test procedure |
117 | Table C.3 – Reduction of samples for series ofcircuit-breakers having different numbers of poles |
118 | Table C.4 – Test sequences for a series of circuit-breakers being of different instantaneous tripping classifications |
119 | Annex D (informative) Co-ordination under short-circuit conditions between a circuit-breaker and another short-circuit protective device (SCPD) associated in the same circuit |
124 | Figure D.1 – Overcurrent co-ordination between a circuit-breaker and a fuse or back-up protection by a fuse – Operating characteristics Figure D.2 – Total selectivity between two circuit-breakers |
125 | Figure D.3 – Back-up protection by a circuit-breaker – Operating characteristics |
126 | Annex E (normative) Special requirements for auxiliary circuits for safety extra-low voltage |
127 | Annex F (informative) Examples of terminals Figure F.1 – Examples of pillar terminals |
128 | Figure F.2 – Examples of screw terminals and stud terminals |
129 | Figure F.3 – Examples of saddle terminals Figure F.4 – Examples of lug terminals |
130 | Annex G (informative) Correspondence between ISO and AWG copper conductors |
131 | Annex H (normative) Arrangement for short-circuit test |
132 | Figure H.1 – Example of test arrangement Figure H.2 – Grid circuit |
133 | Figure H.3 – Grid circuit |
134 | Annex I (normative) Routine tests |
135 | Annex J (normative) Particular requirements for circuit-breakers with screwless-type terminals for external copper conductors |
138 | Table J.1 – Conductors and their theoretical diameters Table J.2 – Cross-sections of copper conductors connectable to screwless-type terminals |
140 | Table J.3 – Pull forces |
141 | Figure J.1 – Example of test set-up |
142 | Figure J.2 – Examples of screwless-type terminals |
144 | Annex K (normative) Particular requirements for circuit-breakers with flat quick-connect terminations |
145 | Table K.1 – Informative table on colour code of female connectors in relationship with the cross section of the conductor |
146 | Table K.2 – Overload test forces |
147 | Figure K.1 – Example of position of the thermocouple for measurement of the temperature-rise Table K.3 – Dimensions of tabs |
148 | Figure K.2 – Dimensions of male tabs |
149 | Figure K.3 – Dimensions of round dimple detents (see Figure K.2) Figure K.4 – Dimensions of rectangular dimple detents (see Figure K.2) Figure K.5 – Dimensions of hole detents |
150 | Figure K.6 – Dimensions of female connectors Table K.4 – Dimensions of female connectors |
151 | Annex L (normative) Specific requirements for circuit-breakers with screw-type terminals for external untreated aluminium conductors and with aluminium screw-type terminals for use with copper or with aluminium conductors |
152 | Bibliography |