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BS EN 60947-2:2017

BS EN 60947-2:2017

$215.11

Low-voltage switchgear and controlgear – Circuit-breakers

Published By Publication Date Number of Pages
BSI 2017 252
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IEC 60947-2:2016 is available as /2 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 60947-2:2016 applies to circuit-breakers, the main contacts of which are intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c.; it also contains additional requirements for integrally fused circuit-breakers. This fifth edition cancels and replaces the fourth edition published in 2006, Amendment 1:2009 and Amendment 2:2013. This edition constitutes a technical revision. This edition includes the following significant additions with respect to the previous edition: – tests for verification of selectivity in Annex A (see A.5.3); – critical load current tests for d.c. circuit-breakers (see 8.3.9); – new Annex P for circuit-breakers for use in photovoltaic applications; – new Annex R for residual-current circuit-breakers with automatic reclosing functions. The contents of the corrigendum of November 2016 have been included in this copy.

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PDF Pages PDF Title
2 National foreword
7 Annex ZZA(informative)
8 Annex ZZB(informative)Relationship between this European standard and the safety objectives of Directive 2014/35/EU [2014 OJ L96] aimed to be covered
9 English
CONTENTS
21 FOREWORD
23 1 General
1.1 Scope and object
24 1.2 Normative references
25 2 Terms and definitions
29 3 Classification
30 4 Characteristics of circuit-breakers
4.1 Summary of characteristics
4.2 Type of circuit-breaker
4.3 Rated and limiting values of the main circuit
4.3.1 General
4.3.2 Rated voltages
31 4.3.3 Currents
4.3.4 Rated frequency
4.3.5 Rated duty
4.3.6 Short-circuit characteristics
33 Tables
Table 1 (void)
Table 2 – Ratio n between short-circuit making capacity and short-circuitbreaking capacity and related power factor (for a.c. circuit-breakers)
34 4.4 Selectivity categories
4.5 Control circuits
4.5.1 Electrical control circuits
4.5.2 Air-supply control circuits (pneumatic or electro-pneumatic)
4.6 Auxiliary circuits
Table 3 – Minimum values of rated short-time withstand current
Table 4 (void)
Table 5 – Preferred values of the rated control supply voltage, if different from that of the main circuit
35 4.7 Releases
4.7.1 Types
4.7.2 Characteristics
4.7.3 Current setting of over-current releases
36 4.7.4 Tripping time setting of over-current releases
4.8 Integral fuses (integrally fused circuit-breakers)
5 Product information
5.1 Nature of the information
5.2 Marking
38 5.3 Instructions for installation, operation and maintenance
6 Normal service, mounting and transport conditions
7 Constructional and performance requirements
7.1 Constructional requirements
7.1.1 General
7.1.2 Withdrawable circuit-breakers
39 7.1.3 Additional requirements for circuit-breakers suitable for isolation
7.1.4 Clearances and creepage distances
7.1.5 Requirements for the safety of the operator
7.1.6 List of construction breaks
40 7.1.7 Additional requirements for circuit-breakers provided with a neutral pole
7.1.8 Digital inputs and outputs for use with programmable logic controllers (PLCs)
7.2 Performance requirements
7.2.1 Operating conditions
42 Table 6 – Characteristics of the opening operation of inverse time-delay over-current opening releases at the reference temperature
43 7.2.2 Temperature-rise
Table 7 – Temperature-rise limits for terminals and accessible parts
44 7.2.3 Dielectric properties
7.2.4 Ability to make and break under no load, normal load and overload conditions
45 7.2.5 Ability to make and break under short-circuit conditions
7.2.6 Vacant
7.2.7 Additional requirements for circuit-breakers suitable for isolation
Table 8 – Number of operating cycles
46 7.2.8 Specific requirements for integrally fused circuit-breakers
7.2.9 Co-ordination between a circuit-breaker and another short-circuitprotective device
7.3 Electromagnetic compatibility (EMC)
8 Tests
8.1 Kind of tests
8.1.1 General
8.1.2 Type tests
47 8.1.3 Routine tests
8.2 Compliance with constructional requirements
8.3 Type tests
8.3.1 Test sequences
50 Table 9 – Overall schema of test sequencesa
51 Table 9a – Applicability of test sequences according to the relationship between Ics, Icu and Icw a
53 Table 9b – Applicability of tests or test sequences to 1, 2 and 4-pole circuit-breakers according to the alternative programme 1 of 8.3.1.4
54 Table 9c – Applicability of tests or test sequences to 1, 2 and 3-pole circuit-breakers according to the alternative programme 2 of 8.3.1.4
55 8.3.2 General test conditions
57 Table 10 – Number of samples for test (1 of 2)
59 Table 11 – Values of power factors and time constants corresponding to test currents
63 8.3.3 Test sequence I: General performance characteristics
71 Table 12 – Test circuit characteristics for overload performance
72 8.3.4 Test sequence II: Rated service short-circuit breaking capacity
73 8.3.5 Test sequence III: Rated ultimate short-circuit breaking capacity
75 8.3.6 Test sequence IV: Rated short-time withstand current
76 8.3.7 Test sequence V: Performance of integrally fused circuit-breakers
78 8.3.8 Test sequence VI: combined test sequence
79 8.3.9 Critical d.c. load current test
80 8.4 Routine tests
8.4.1 General
81 8.4.2 Mechanical operation tests
8.4.3 Verification of the calibration of overcurrent releases
82 8.4.4 Verification of the operation of undervoltage and shunt releases
8.4.5 Additional tests for CBRs
8.4.6 Dielectric tests
83 8.4.7 Test for the verification of clearances less than those corresponding to case A of Table 13 of IEC 60947-1:2007
8.5 Special tests – Damp heat, salt mist, vibration and shock
85 Figures
Figure 1 – Test arrangement (connecting cables not shown) for short-circuit tests
86 Annexes
Annex A (normative) Co-ordination between a circuit-breaker and another short-circuit protective device associated in the same circuit
A.1 General
A.2 Scope and object
87 A.3 General requirements for the co-ordination of a circuit-breakerwith another SCPD
A.3.1 General considerations
A.3.2 Take-over current
A.3.3 Behaviour of C1 in association with another SCPD
A.4 Type and characteristics of the associated SCPD
88 A.5 Verification of selectivity
A.5.1 General
A.5.2 Consideration of selectivity by desk study
89 A.5.3 Selectivity determined by test
90 A.6 Verification of back-up protection
A.6.1 Determination of the take-over current
A.6.2 Verification of back-up protection
A.6.3 Tests for verification of back-up protection
91 A.6.4 Results to be obtained
92 Figure A.1 – Over-current co-ordination between a circuit-breaker and a fuse or back-up protection by a fuse: operating characteristics
93 Figure A.2 – Total selectivity between two circuit-breakers
94 Figure A.3 – Back-up protection by a circuit-breaker – Operating characteristics
96 Figure A.5 – Example of test circuit for the verification of selectivity
97 Annex B (normative) Circuit-breakers incorporating residual current protection
B.1 General
B.1.1 Preamble
B.1.2 Scope and object
98 B.2 Terms and definitions
B.2.1 Terms and definitions relating to currents flowing from live parts to earth
B.2.2 Terms and definitions relating to the energization of a CBR
99 B.2.3 Terms and definitions relating to the operation and the functions of a CBR
100 B.2.4 Terms and definitions relating to values and ranges of energizing quantities
101 B.3 Classification
B.3.1 Classification according to the method of operation of the residual current function
B.3.2 Classification according to the possibility of adjusting the residual operating current
B.3.3 Classification according to time-delay of the residual current function
B.3.4 Classification according to behaviour in presence of a d.c. component
B.4 Characteristics of CBRs concerning their residual current function
B.4.1 Rated values
102 B.4.2 Preferred and limiting values
Table B.1 – Operating characteristic for non-time-delay type
103 B.4.3 Value of the rated residual short-circuit making and breaking capacity (Im)
B.4.4 Operating characteristics in case of an earth fault current in the presenceor absence of a d.c. component
B.5 Marking
Table B.2 – Operating characteristic for time-delay type having a limiting non-actuating time of 0,06 s
104 B.6 Normal service, mounting and transport conditions
105 B.7 Design and operating requirements
B.7.1 Design requirements
B.7.2 Operating requirements
107 B.7.3 Electromagnetic compatibility
B.8 Tests
B.8.1 General
Table B.3 – Requirements for CBRs functionally dependent on line voltage
109 Table B.4 – Additional test sequences
110 B.8.2 Verification of the operating characteristic
111 B.8.3 Verification of dielectric properties
112 B.8.4 Verification of the operation of the test device at the limits of rated voltage
B.8.5 Verification of the limiting value of the non-operating current under over-current conditions
113 B.8.6 Verification of the resistance against unwanted tripping due to surge currents resulting from impulse voltages
114 B.8.7 Verification of the behaviour of CBRs of type A in the case of an earth fault current comprising a d.c. component
Table B.5 – Tripping current range for CBRs in case of an earth fault comprising a d.c. component
115 B.8.8 Verification of the behaviour of CBRs functionally dependent on line voltage classified under B.3.1.2.1
116 B.8.9 Verification of the behaviour of CBRs functionally dependent on line voltage as classified under B.3.1.2.2 in the case of failure of line voltage
117 B.8.10 Verification of the residual short-circuit making and breaking capacity
118 B.8.11 Verification of the effects of environmental conditions
B.8.12 Verification of electromagnetic compatibility
120 B.8.13 Test for variations or interruptions of voltage and for voltage dips
Figure B.1 – Test circuit for the verification of the operating characteristic (see B.8.2)
121 Figure B.2 – Test circuit for the verification of the limiting value of thenon-operating current under over-current conditions (see B.8.5)
122 Figure B.3 – Test circuit for the verification of the behaviourof CBRs classified under B.3.1.2.2 (see B.8.9)
123 Figure B.4 – Current ring wave 0,5 (s/100 kHz
Figure B.5 – Example of test circuit for the verificationof resistance to unwanted tripping
124 Figure B.6 – Surge current wave 8/20 (s
Figure B.7 – Test circuit for the verification of resistance to unwanted trippingin case of flashover without follow-on current (B.8.6.3)
125 Figure B.8 – Test circuit for the verification of the correct operation of CBRs,in the case of residual pulsating direct currents(see B.8.7.2.1, B.8.7.2.2 and B.8.7.2.3)
126 Figure B.9 – Test circuit for the verification of the correct operation of CBRs,in the case of a residual pulsating direct current superimposedby a smooth direct residual current (see B.8.7.2.4)
127 Annex C (normative) Individual pole short-circuit test sequence
C.1 General
C.2 Test of individual pole short-circuit breaking capacity
C.3 Verification of dielectric withstand
C.4 Verification of overload releases
128 Annex D Vacant
129 Annex E (informative) Items subject to agreement between manufacturer and user
130 Annex F (normative) Additional tests for circuit-breakers withelectronic over-current protection
F.1 General
F.2 List of tests
F.2.1 General
F.2.2 Electromagnetic compatibility (EMC) tests
131 F.2.3 Suitability for multiple frequencies
F.2.4 Dry heat test
F.2.5 Damp heat test
F.2.6 Temperature variation cycles at a specified rate of change
F.3 General test conditions
F.3.1 General
F.3.2 Electromagnetic compatibility tests
132 F.4 Immunity tests
F.4.1 Harmonic currents
133 F.4.2 Electrostatic discharges
F.4.3 Radiated RF electromagnetic fields
F.4.4 Electrical fast transient/burst (EFT/B)
134 F.4.5 Surges
F.4.6 Conducted disturbances induced by RF fields (common mode)
F.4.7 Current dips
135 F.5 Emission tests
F.5.1 Harmonics
F.5.2 Voltage fluctuations
F.5.3 Conducted RF disturbances (150 kHz to 30 MHz)
F.5.4 Radiated RF disturbances (30 MHz to 1 GHz)
Table F.1 – Test parameters for current dips and interruptions
136 F.6 Suitability for multiple frequencies
F.6.1 General
F.6.2 Test conditions
F.6.3 Test procedure
F.6.4 Test results
F.7 Dry heat test
F.7.1 Test procedure
137 F.7.2 Test results
F.7.3 Verification of overload releases
F.8 Damp heat test
F.8.1 Test procedure
F.8.2 Verification of overload releases
F.9 Temperature variation cycles at a specified rate of change
F.9.1 Test conditions
F.9.2 Test procedure
138 F.9.3 Test results
F.9.4 Verification of overload releases
Figure F.1 – Representation of test current produced by back-to-back thyristors in accordance with F.4.1
139 Figure F.2 – Test circuit for immunity and emission tests in accordance with F.4.1.3, F.4.2, F.4.3, F.4.6, F.4.7.1, F.5.4 and F.6.3 – Two phase poles in series
Figure F.3 – Test circuit for immunity and emission tests in accordance with F.4.1.3, F.4.2, F.4.3, F.4.6, F.4.7.1, F.5.4 and F.6.3 – Three phase poles in series
140 Figure F.4 – Test circuit for immunity and emission tests in accordance with F.4.1.3, F.4.2, F.4.3, F.4.6, F.4.7.1, F.5.4 and F.6.3 – Three-phase connection
Figure F.5 – Test current for the verification of the influence of the current dips and interruptions in accordance with F.4.7.1
141 Figure F.6 – Circuit for electrical fast transients/bursts (EFT/B) immunity test in accordance with F.4.4 – Two phase poles in series
Figure F.7 – Circuit for electrical fast transients/bursts (EFT/B) immunity test in accordance with F.4.4 – Three phase poles in series
142 Figure F.8 – Circuit for electrical fast transients/bursts (EFT/B) immunity test in accordance with F.4.4 – Three-phase connection
Figure F.9 – Test circuit for the verification of the influence of surges in the main circuit (line-to-earth) in accordance with F.4.5 – Two phase poles in series
143 Figure F.10 – Test circuit for the verification of the influence of surges in the main circuit (line-to-earth) in accordance with F.4.5 – Three phase poles in series
Figure F.11 – Test circuit for the verification of the influence of surges in the main circuit (line-to-earth) in accordance with F.4.5 – Three-phase connection
144 Figure F.12 – Test circuit for the verification of the influence of current surges in the main circuit in accordance with F.4.5 – Two phase poles in series
Figure F.13 – Test circuit for the verification of the influence of current surges in the main circuit in accordance with F.4.5 – Three phase poles in series
145 Figure F.14 – Test circuit for the verification of the influence of current surges in the main circuit in accordance with F.4.5 – Three-phase connection
Figure F.15 – Temperature variation cycles at a specified rate of change in accordance with F.9.1
146 Figure F.16 – General test set-up for immunity tests
147 Figure F.17 – Test set-up for the verification of immunity to radiated RF electromagnetic fields
Figure F.18 – Test set-up for the verification of immunity to electrical fast transients/bursts (EFT/B) on power lines
148 Figure F.19 – Test set-up for verification of immunity to electrical fast transients/bursts (EFT/B) on signal lines
Figure F.20 – General test set-up for the verification of immunity to conducted disturbances induced by RF fields (common mode)
149 Figure F.21 – Arrangement of connections for the verification of immunity to conducted disturbances induced by RF fields – Two phase poles in series configuration
Figure F.22 – Arrangement of connections for the verification of immunity to conducted disturbances induced by RF fields – Three phase poles in series configuration
150 Figure F.23 – Arrangement of connections for the verification of immunity to conducted disturbances induced by RF fields – Three-phase configuration
151 Annex G (normative) Power loss
G.1 General
G.2 Test methods
G.2.1 General case
G.2.2 AC circuit-breakers of rated current not exceeding 400 A
152 G.2.3 DC circuit-breakers
G.3 Test procedure
Figure G.1 – Example of power loss measurement according to G.2.1
153 Figure G.2 – Example of power loss measurement according to G.2.2 and G.2.3
154 Annex H (normative) Test sequence for circuit-breakers for IT systems
H.1 General
H.2 Individual pole short-circuit
155 H.3 Verification of dielectric withstand
H.4 Verification of overload releases
H.5 Marking
156 Annex J (normative) Electromagnetic compatibility (EMC) – Requirements and test methods for circuit-breakers
J.1 General
157 J.2 Immunity
J.2.1 General
158 Table J.1 – EMC – Immunity tests
159 J.2.2 Electrostatic discharges
Table J.2 – Reference data for immunity test specifications
160 J.2.3 Radiated RF electromagnetic fields
J.2.4 Electrical fast transients/bursts (EFT/B)
J.2.5 Surges
161 J.2.6 Conducted disturbances induced by RF fields (common mode)
J.3 Emission
J.3.1 General
162 J.3.2 Conducted RF disturbances (150 kHz to 30 MHz)
J.3.3 Radiated RF disturbances (30 MHz to 1 000 MHz)
Table J.3 – EMC – Emission tests
Table J.4 – Reference data for emission test specifications
163 Figure J.1 – EUT mounted in a metallic enclosure
164 Figure J.2 – Test set up for the measurement of radiated RF emissions
165 Figure J.3 – Test set up for the verification of immunity to electrostatic discharges
Figure J.4 – Test set up for the verification of immunity to radiated RF electromagnetic fields
166 Figure J.5 – Test set up for the verification of immunity to electrical fast transients/bursts (EFT/B) on power lines
Figure J.6 – Test set up for the verification of immunity to electrical fast transients/bursts (EFT/B) on signal lines
167 Annex K (informative) Glossary of symbols and graphical representation of characteristics
169 Figure K.1 – Relationship between symbols and tripping characteristics
170 Figure K.2 – Template for characteristics of cut-off current versus prospective current from 1 kA to 200 kA
171 Figure K.3 – Template for characteristics of cut-off current versus prospective current from 0,01 kA to 200 kA
172 Figure K.4 – Template for characteristics of let-through energy versus prospective current from 1 kA to 200 kA
173 Figure K.5 – Template for characteristics of let-through energy versus prospective current from 0,01 kA to 200 kA
174 Figure K.6 – Example of the use of template to Figure K.2
175 Figure K.7 – Example of the use of template to Figure K.4
176 Annex L (normative) Circuit-breakers not fulfilling the requirements for overcurrent protection
L.1 General
L.2 Terms and definitions
L.3 Classification
L.4 Rated values
L.4.1 Rated current (In)
177 L.4.2 Rated conditional short-circuit current (Icc)
L.5 Product information
L.6 Constructional and performance requirements
L.7 Tests
L.7.1 General
178 L.7.2 Rated conditional short-circuit tests
181 Annex M (normative) Modular residual current devices (without integral current breaking device)
M.1 General
M.1.1 Field of application
M.1.2 Field of application
M.2 Terms and definitions
M.2.1 Terms and definitions relating to the energization of an MRCD
182 M.2.2 Terms and definitions relating to the operation and the functions of an MRCD
M.3 Classification
M.3.1 Classification according to the configuration of the primary conductors
183 M.3.2 Classification according to the method of operation
M.3.3 Classification according to the possibility of adjusting the residual operating current
M.3.4 Classification according to time-delay of the residual current function
M.3.5 Classification according to behaviour in presence of a d.c. component
M.4 Characteristics of MRCDs
M.4.1 General characteristics
184 M.4.2 Characteristics of MRCDs concerning their residual current function
185 M.4.3 Behaviour under short-circuit conditions
M.4.4 Preferred and limiting values
186 M.5 Product information
187 Table M.1 – Product information
188 M.6 Normal service, mounting and transport conditions
M.7 Design and operating requirements
M.7.1 Design requirements
M.7.2 Operating requirements
189 Table M.2 – Requirements for MRCDs with voltage source
190 M.8 Tests
M.8.1 General
191 M.8.2 Compliance with constructional requirements
Table M.3 – Test sequences
192 M.8.3 Verification of the operating characteristics
194 M.8.4 Verification of dielectric properties
M.8.5 Verification of the operation of the test device at the limits of the rated voltage
195 M.8.6 Verification of the limiting value of non-operating current under overcurrent conditions, in case of a single phase load
M.8.7 Resistance against unwanted tripping due to surge currents resulting from impulse voltages
M.8.8 Verification of the behaviour in case of an earth fault current comprising a d.c. component
198 M.8.9 Verification of the behaviour of MRCDs with separate sensing means in case of a failure of the sensing means connection
M.8.10 Verification of temperature-rise of terminal type MRCDs
M.8.11 Verification of mechanical and electrical endurance
199 M.8.12 Verification of the behaviour of MRCDs in case of failure of the voltage source for MRCDs classified under M.3.2.2.1
200 M.8.13 Verification of the behaviour of MRCDs with voltage source as classified under M.3.2.2.2 in case of failure of the voltage source
M.8.14 Verification of the behaviour of the MRCD under short-circuit conditions
202 M.8.15 Verification of effects of environmental conditions
M.8.16 Verification of electromagnetic compatibility
204 Figure M.1 – Test circuits for the verification of operation in the caseof a steady increase of residual current
205 Figure M.2 – Test circuits for the verification of operation in the caseof a sudden appearance of residual current (with breaking device)
206 Figure M.3 – Test circuits for the verification of operation in the case of a sudden appearance of residual current (without breaking device)
207 Figure M.4 – Test circuits for the verification of the limiting value of non-operating current under overcurrent conditions
208 Figure M.5 – Test circuits for the verification of the resistance to unwanted tripping in the case of loading of the network capacitance
209 Figure M.6 – Test circuit for the verification of the resistance to unwanted tripping in the case of flashover without follow-on current
210 Figure M.7 – Test circuits for the verification of operation in the caseof a continuous rise of a residual pulsating direct current
211 Figure M.8 – Test circuits for the verification of operation in the case of a sudden appearance of residual pulsating direct current (without breaking device)
212 Figure M.9 – Test circuits for the verification of operation in the case of a sudden appearance of residual pulsating direct current (with breaking device)
213 Figure M.10 – Test circuits for the verification of operation in the case of a residual pulsating direct current superimposed by smooth direct current of 6 mA
214 Figure M.11 – Test circuits for the verification of operation in the caseof a slowly rising residual smooth direct current
215 Figure M.12 – Test circuits for the verification of operation in the case of a sudden appearance of residual smooth direct current (without breaking device)
216 Figure M.13 – Test circuits for the verification of operation in the case of a sudden appearance of residual smooth direct current (with breaking device)
217 Figure M.14 – Test circuits for the verification of operation in the case of a slowly rising residual current resulting from a fault in a circuit fed by a three-pulse star or a six-pulse bridge connection
218 Figure M.15 – Test circuits for the verification of operation in the case of a slowly rising residual current resulting from a fault in a circuit fed by a two-pulse bridge connection line-to-line
219 Figure M.16 – Test circuit for the verification of the behaviour of MRCDs with separate sensing means in the case of a failure of the sensor means connection
220 Figure M.17 – Test circuit for the verification of the behaviour of MRCD with separate sensing means under short-circuit conditions
221 Figure M.18 – Test circuit for the verification of the behaviour of MRCD with integral sensing means under short-circuit conditions
222 Figure M.19 – Test circuit for the verification of the behaviour of terminal type MRCD under short-circuit conditions
223 Figure M.20 – Verification of immunity to radiated RF electromagnetic fields – Test set-up for MRCD with separate sensing means (additional to the test of Annex B)
224 Figure M.21 – Verification of immunity to electrical fast transients/bursts (EFT/B) on the sensing means connection of an MRCD with separate sensing means (additional to the test of Annex B)
Figure M.22 – Verification of immunity to conducted disturbances induced by RF fields – Test set up for MRCD with separate sensing means (additional to the test of Annex B)
225 Annex N (normative) Electromagnetic compatibility (EMC) – Additional requirements and test methods for devices not covered by Annex B, Annex F and Annex M
N.1 General
N.1.1 General
N.1.2 General test conditions
N.2 Immunity
N.2.1 General
226 N.2.2 Electrostatic discharges
N.2.3 Radiated RF electromagnetic fields
N.2.4 Electrical fast transients/bursts (EFT/B)
227 N.2.5 Surges
N.2.6 Conducted disturbances induced by RF fields (common mode)
N.2.7 Voltage dips and interruptions
N.3 Emission
N.3.1 General
228 N.3.2 Conducted RF disturbances (150 kHz to 30 MHz)
N.3.3 Radiated RF disturbances (30 MHz to 1 000 MHz)
229 Annex O (normative) Instantaneous trip circuit-breakers (ICB)
O.1 General
O.2 Terms and definitions
O.3 Rated values
O.3.1 General
O.3.2 Rated current (In)
O.3.3 Rated short-circuit making capacity
O.3.4 Rated short-circuit breaking capacities
230 O.4 Product information
O.5 Constructional and performance requirements
O.6 Tests
O.6.1 Test sequence of the ICB alone
231 O.6.2 ICB associated with a specified protected device (i.e. motor-starter or overload relay)
232 Annex P (normative) DC circuit-breakers for use in photovoltaic (PV) applications
P.1 Field of application
P.2 Terms and definitions
P.3 Classification
P.4 Characteristics of PV circuit-breakers
Table P.1 – Rated impulse withstand levels for PV circuit-breakers
233 P.5 Product information
P.6 Normal service, mounting and transport conditions
P.7 Constructional and performance requirements
P.7.1 Constructional requirements
P.7.2 Performance requirements
234 P.7.3 Electromagnetic compatibility (EMC)
P.8 Tests
P.8.1 Kind of tests
P.8.2 Compliance with constructional requirements
P.8.3 Type tests
Table P.2 – Number of operating cycles
236 P.8.4 Routine tests
P.8.5 Special tests
237 Annex Q Vacant
238 Annex R (normative) Circuit-breakers incorporating residual current protection with automatic re-closing functions
R.1 General
R.1.1 Preamble
R.1.2 Field of application
239 R.2 Terms and definitions
240 R.3 Classification
R.3.1 According to the method of construction
R.3.2 According to the method of automatic reclosing
R.4 Characteristics
R.4.1 Rated automatic reclosing operating residual current (Iar)
R.4.2 Maximum number of consecutive reclosing operations
241 R.5 Marking and instructions
R.6 Normal service, mounting and transport conditions
R.7 Design and operating requirements
R.7.1 Design requirements
242 R.7.2 Operating requirements
243 R.8 Tests
R.8.1 General conditions
R.8.2 Verification of the non-reclosing after tripping under over-current conditions
R.8.3 Verification of the non-reclosing after intentional opening
244 R.8.4 Verification of the automatic reclosing function after tripping on earth fault
245 R.8.5 Verification of mechanical endurance
R.8.6 Verification of the isolation function
246 R.8.7 Verification of residual short-circuit making and breaking capacity
R.8.8 Verification of the automatic reclosing function after the test sequences of Clause B.8
R.8.9 Test items for external type automatic reclosing devices
247 Table R.1 – Test sequences for external type automatic re-closing devices
248 Figure R.1 – Test circuit for the verification of the automatic reclosing functions
249 Bibliography

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