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BS EN IEC 60947-3:2021 – TC

BS EN IEC 60947-3:2021 – TC

$280.87

Tracked Changes. Low-voltage switchgear and controlgear – Switches, disconnectors, switch-disconnectors and fuse-combination units

Published By Publication Date Number of Pages
BSI 2021 212
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PDF Pages PDF Title
1 compares BS EN IEC 60947‑3:2021
2 TRACKED CHANGES
Text example 1 — indicates added text (in green)
4 Compliance with a British Standard cannot confer immunity from legal obligations.
Amendments/corrigenda issued since publication
5 (CEI 60947-3:2008)(IEC 60947-3:2020) Niederspannungsschaltgeräte – Teil 3: Lastschalter, Trennschalter, Lasttrennschalter und Schalter-Sicherungs-Einheiten
6 ForewordEuropean foreword
Endorsement notice
Foreword amendment A1
7 Endorsement notice
Endorsement notice
11 Table ZZA.1 — Correspondence between this European standard and the Essential Requirements set out in Directive 2014/30/EU [2014 OJ L96]
12 Table ZZB.1 — Correspondence between this European standard and Annex I of Directive 2014/35/EU [2014 OJ L96]
13 CONTENTS
18 INTERNATIONAL ELECTROTECHNICAL COMMISSION
20 INTRODUCTION
21 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
1.11 Scope and object
22 1.22 Normative references
23 23 Terms, definitions and index of terms
2.13.1 General
2.23.2 Alphabetical index of terms
24 2.3 Terms and definitions
3.3 General terms
2.3.13.3.1
2.3.23.3.2
2.3.33.3.3
2.3.3.13.3.3.1
25 2.3.3.23.3.3.2
2.3.43.3.4
2.3.4.13.3.4.1
2.3.4.23.3.4.2
2.3.5.13.3.5.1
2.3.5.23.3.5.2
2.3.63.3.6
2.3.6.13.3.6.1
2.3.6.23.3.6.2
26 2.3.73.3.7
2.3.7.13.3.7.1
2.3.7.23.3.7.2
2.3.83.3.8
2.3.8.13.3.8.1
2.3.8.23.3.8.2
2.3.93.3.9
2.3.103.3.10
4 Classification
4.1 According to the utilization category
27 4.2 According to the method of operation
4.2.2 Remotely operated equipment
4.3 According to suitability for isolation
4.4 According to the degree of protection provided
2.44.5 Summary of the symbols for equipment types
Table 1 – Summary of equipment definitions
28 3 Classification
3.1 According to the utilization category
3.2 According to the method of operation of manually operated equipment
3.3 According to suitability for isolation
3.4 According to the degree of protection provided
4.25.2 Type of equipment
4.35.3 Rated and limiting values for the main circuit
29 4.3.15.3.2 Rated voltages
4.3.1.25.3.2.2 Rated insulation voltage (Ui)
4.3.1.35.3.2.3 Rated impulse withstand voltage (Uimp)
4.3.25.3.3 Currents
4.3.2.15.3.3.2 Conventional free air thermal current (Ith)
4.3.2.25.3.3.3 Conventional enclosed thermal current (Ithe)
4.3.2.35.3.3.4 Rated operational currentscurrent (Ie) or rated operational powerspower
4.3.2.45.3.3.5 Rated uninterrupted current (Iu)
4.3.35.3.4 Rated frequency
4.3.45.3.5 Rated duty
4.3.4.15.3.5.2 Eight-hour duty
4.3.4.25.3.5.3 Uninterrupted duty
30 4.3.55.3.6 Normal load and overload characteristics
4.3.5.25.3.6.2 Rated making capacity
4.3.5.35.3.6.3 Rated breaking capacity
4.3.65.3.7 Short-circuit characteristics
4.3.6.25.3.7.2 Rated short-circuit making capacity (Icm)
4.3.6.3 Vacant
5.3.7.3 Void
4.45.4 Utilization category
31 Table 2 ±– Utilization categories
32 4.55.5 Control circuits
4.65.6 Auxiliary circuits
4.75.7 Relays and releases
4.85.8 Co-ordination with short-circuit protective devices (SCPD)
56 Product information
5.16.1 Nature of information
5.26.2 Marking
33 5.2.4 The following data shall be made available in the manufacturer’s published information:
34 Table 3 – Product information
5.36.3 Instructions for installation, operation and maintenance, decommissioning and dismantling
35 67 Normal service, mounting and transport conditions Clause 6 of IEC 60947-1 applies with the following addition.
78 Constructional and performance requirements
7.18.1 Constructional requirements
7.1.2.28.1.2.2 Glow wire testing
7.1.78.1.7 Additional requirements for equipment suitable for isolation
36 7.1.7.18.1.7.2 Additional constructional requirements
7.1.98.1.9 Additional requirements for equipment provided with a neutral pole
7.28.2 Performance requirements
37 7.2.1.28.2.1.2 Limits of operation of power operated equipment
7.2.1.38.2.1.3 Limits of operation of under-voltage relays and releases.
7.2.1.48.2.1.4 Limits of operation of shunt releases
7.2.28.2.2 Temperature-rise
7.2.38.2.3 Dielectric properties
7.2.3.18.2.3.2 Impulse withstand voltage
7.2.3.28.2.3.3 Power-frequency or DC withstand voltage of the main, auxiliary and control circuits
7.2.48.2.4 Ability to make and break under no-load, normal load and overload conditions
38 Table 3 ±4 – Verification of rated making and breaking capacities (see 8.3.3.3±9.3.4.4) – Conditions for making and breaking corresponding to the various utilization categories
39 Table 45 – Verification of operational performance – Number of operating cycles corresponding to the rated operational current
7.2.4.48.2.4.4 Electrical durability
40 7.2.58.2.5 Ability to make, break or withstand short-circuit currents
7.2.68.2.6 VacantVoid
7.2.8 Vacant
8.2.8 Critical load current performance: DC equipment
7.2.98.2.9 Overload requirements for equipment incorporating fuses
7.38.3 Electromagnetic compatibility (EMC)
7.3.18.3.1 General
7.3.28.3.2 Immunity
7.3.2.1 Equipment not incorporating electronic circuits
41 7.3.2.28.3.2.2 Equipment incorporating electronic circuits
Table 6 – Immunity tests
Table 7 – Immunity tests a
42 7.3.38.3.3 Emission
7.3.3.28.3.3.2 Equipment incorporating electronic circuits
Table 7Table 8 – Emission limits
43 89 Tests
8.1 Kind of tests
9.1 Kinds of test
89.1.1 General
8.1.29.1.2 Type tests
8.1.39.1.3 Routine tests
8.1.3.1 General
8.1.3.29.1.3.2 Mechanical operation test
8.1.3.39.1.3.3 Dielectric test
8.1.49.1.4 Sampling tests
44 8.1.59.1.5 Special tests
8.29.2 Type tests for Compliance with constructional requirements
9.2.1 General
8.2.49.2.5 Mechanical and electrical properties of terminals
8.2.59.2.6 Verification of the effectiveness of indication of the main contactscontact position of equipment suitable for isolation
8.2.5.19.2.6.2 Condition of equipment for tests
45 Table 9 – List of type tests applicable to a given equipment
8.39.3 Performance
9.3.1 General
8.3.19.3.2 Test sequences
46 Table 10 – Overall scheme of test sequences
8.3.29.3.3 General test conditions
47 8.3.2.1.19.3.3.2 Simplified test for equipment having the same fundamental design
8.3.2.1.29.3.3.3 Requirements for equipment having the same fundamental design
8.3.2.1.39.3.3.4 Simplified test procedure
48 8.3.2.29.3.3.5 Test quantities
9.3.3.6 DC test current ripple
8.3.2.39.3.3.7 Evaluation of test results
49 8.3.2.49.3.3.8 Test reportreports
8.3.39.3.4 Test sequence I: general performance characteristics
8.3.3.19.3.4.2 Temperature-rise
50 Table 11 – Test sequence I: general performance characteristics
8.3.3.39.3.4.4 Making and breaking capacities
51 8.3.3.3.29.3.4.4.2 Test circuit
8.3.3.3.39.3.4.4.3 Transient Characteristics of transient recovery voltage
8.3.3.3.59.3.4.4.4 Behaviour of the equipment during and after making and breaking capacity tests
52 8.3.3.3.69.3.4.4.5 Condition of equipment after the making and breaking capacity tests
8.3.3.49.3.4.5 Dielectric verification
8.3.3.59.3.4.6 Leakage current
8.3.3.69.3.4.7 Temperature-rise verification
53 Table 12 – Temperature-rise limits for terminals and accessible parts
8.3.3.79.3.4.8 Strength of actuator mechanism
8.3.49.3.5 Test sequence II: operational performance capability
Table 13 – Test sequence II: operational performance capability
54 8.3.4.1.29.3.5.2.2 Test circuit
8.3.4.1.39.3.5.2.3 Transient recovery voltage
8.3.4.1.49.3.5.2.4 Switching overvoltages
8.3.4.1.59.3.5.2.5 Behaviour of the equipment during the operational performance test
8.3.4.1.69.3.5.2.6 Condition of the equipment after the operational performance test
55 8.3.4.29.3.5.3 Dielectric verification
8.3.4.39.3.5.4 Leakage current
8.3.4.49.3.5.5 Temperature-rise verification
8.3.59.3.6 Test sequence III: short-circuit performance capability
Table 14 – Test sequence III: short-circuit performance capability
56 8.3.5.1.29.3.6.2.2 Test circuit
8.3.5.1.3 Test circuit calibration
The calibration of the test circuit is carried out by placing temporary connections B of negligible impedance as close as reasonably possible to the terminals provided for connecting the equipment under test.
9.3.6.2.3 Calibration of the test circuit
8.3.5.1.49.3.6.2.4 Test procedure
8.3.5.1.59.3.6.2.5 Behaviour of the equipment during the test
8.3.5.1.69.3.6.2.6 Conditions of the equipment after the test
57 8.3.5.29.3.6.3 Short-circuit making capacity test
8.3.5.2.29.3.6.3.2 Test circuit
8.3.5.2.39.3.6.3.3 Test circuit calibration
58 8.3.5.2.49.3.6.3.4 Test procedure
8.3.5.2.59.3.6.3.5 Behaviour of the equipment during the test
8.3.5.2.69.3.6.3.6 Condition of the equipment after the test
8.3.5.39.3.6.4 Dielectric verification
8.3.5.49.3.6.5 Leakage current
8.3.5.59.3.6.6 Temperature-rise verification
8.3.69.3.7 Test sequence IV: conditional short-circuit current
59 8.3.6.19.3.7.2 Circuit-breaker protected short-circuit withstand
8.3.6.2 Fuse protected short-circuit withstand
60 Table 15 – Test sequence IV: conditional short-circuit current – circuit-breaker protected
9.3.7.2.2 Test circuit
9.3.7.2.3 Test circuit calibration
9.3.7.2.4 Test procedure
9.3.7.2.5 Behaviour of the equipment during the test
9.3.7.2.6 Condition of the equipment after the test
9.3.7.3 Fuse protected short-circuit withstand
61 Table 15 16 – Test sequence IV: conditional short-circuit current – fuse protected
8.3.6.2.39.3.7.3.3 Test circuit calibration
8.3.6.2.49.3.7.3.4 Test procedure
62 8.3.6.2.59.3.7.3.5 Behaviour of the equipment during the test
8.3.6.2.69.3.7.3.6 Condition of the equipment after the test
8.3.6.39.3.7.4 Dielectric verification
8.3.6.49.3.7.5 Leakage current
8.3.6.59.3.7.6 Temperature-rise verification
8.3.79.3.8 Test sequence V: overload performance capability
8.3.7.19.3.8.2 Overload test
8.3.7.29.3.8.3 Dielectric verification
8.3.7.39.3.8.4 Leakage current
8.3.7.49.3.8.5 Temperature-rise verification
63 Table 1617 – Test sequence V: overload performance capability
9.3.9.2 Determination of critical load current
64 9.3.9.2.2 Test circuit
9.3.9.2.3 Value of critical load current
9.3.9.3 Critical load current performance
Table 18 – Number of operating cycles corresponding to the critical load current
65 8.49.4 Electromagnetic compatibility tests
9.4.1 General
8.4.19.4.2 Immunity
8.4.1.2 Equipment incorporating electronic circuits
66 8.4.29.4.3 Emission
8.4.2.19.4.3.2 Equipment not incorporating electronic circuits
8.4.2.2 Equipment incorporating electronic circuits
8.59.5 Special tests
9.5.1 Mechanical and electrical durability
8.5.19.5.2 Mechanical durability
67 9.5.4 Damp heat, salt mist, vibration and shock
68 Annex A
(normative)
A.1 General
A.2 Rated duty
A.2.1 Intermittent periodic duty or intermittent duty
A.2.2 Temporary duty
A.3 Making and breaking capacities
A.4 Utilization category
69 Table A.1 – Utilization categories
70 Table A.2 – Rated making and breaking capacity conditions corresponding to several utilization categories
71 Table A.3 – Relationship between current broken Ic and off-time for the verification of the rated making and breaking capacities
A.5 Operational performance
Table A.4 – Operational performance – Conditions for making and breaking corresponding to several utilization categories
72 A.6 Mechanical durability
A.7 Electrical durability
A.8 Verification of making and breaking capacities
A.9 Operational performance test
A.10 Special tests
A.10.1 General
A.10.1A.10.2 Mechanical durability test
A.10.1.2A.10.2.2 Operating conditions
73 A.10.1.3A.10.2.3 Test procedure
A.10.1.4A.10.2.4 Results to be obtained
A.10.2A.10.3 Electrical durability test
74 Table A.5 – Verification of the number of on-load operating cycles – Conditions for making and breaking corresponding to several utilization categories
75 Annex B
(informative)
76 Annex C
(normative)
C.1 General
77 Figure C.1 – Typical arrangements
C.2 Tests
C.3 Test set-up and sequence
C.3.1 Making and breaking capacities (8.3.3.3)(9.3.4.3) and operational performance (8.3.4.1)(9.3.5.2)
C.3.2 Fuse protected short-circuit test (8.3.6.2)(9.3.7.3)
78 C.4 Condition of equipment after tests
C.5 Instructions for use
79 Annex D
(normative)
D.1 General
D.1.1 Background
D.1.1 Scope and object
D.1.2 Object
D.1.2D.2 Normative references
80 D.2D.3 Terms and definitions
D.3D.4 Classification
D.3.1D.4.1 According to the utilization category
D.4.3.5.1D.5.3.6.1 Ability to withstand motor switching overload currents
D.4.3.5.2D.5.3.6.2 Rated making capacity
D.4.3.5.3D.5.3.6.3 Rated breaking capacity
D.4.3.6.1D.5.3.7.1 Rated short-time withstand current (Icw)
D.4.4D.5.4 Utilization category
81 Table D.1 – Utilization categories
D.5 Product information
D.5.2 Marking
D.6 Product information
D.6D.7 Normal service, mounting and transport conditions
82 Table D.2 – Service arrangements
Table D.3 – Environmental conditions
D.7D.8 Constructional and performance requirements
D.7.1.4D.8.1.4 Clearances and creepage distances
D.7.1.12D.8.1.12 Degrees of protection of enclosed equipment
83 D.7.2.3D.8.2.3 Dielectric properties
Table D.4 – Rated impulse withstand levels for PV switches, PV disconnectors, PV switch-disconnectors or PV fuse-combination units
Table D.5 – Verification of rated making and breaking capacities (see 8.3.3.3)9.3.4.4) – Conditions for making and breaking corresponding to the DC-PV category
84 D.8.2.4.2.1 Operational performance at a normal ambient air temperature
Table D.6 – Number of operating cycles
85 D.7.2.4.4D.8.2.4.4 Electrical durability
D.7.2.8D.8.2.8 Critical load current performance
D.8D.9 Tests
D.8.3.1D.9.3.2 Test sequences
86 Table D.8 – Overall scheme of test sequences (addition)
88 D.8.3.2D.9.3.3 General test conditions
D.8.3.3.3.1D.9.3.4.4.1 Test values and conditions
D.8.3.4.1.1D.9.3.5.2.1 Test values and conditions
D.8.3.5.1.2D.9.3.5.2.2 Test circuit
D.8.3.6.2.2D.9.3.6.2.2 Test circuit
D.8.3.7.1D.9.3.8.2 Overload test
89 D.8.3.8 Test sequence VI: critical load current performance
In the case of equipment of Category DC-PV1, all the operations shall be with the supply connected in accordance with the generator and load markings. Tests on equipments in accordance with DC-PV2 shall be carried out:
D.8.3.8.1.2 Test circuit
D.8.3.8.1.3 Critical load current
90 D.8.3.8.2 Critical load current performance
D.9.3.9 Critical load current performance of equipment with a DC rating
Table D.9 – Number of operating cycles corresponding to the critical load current
91 D.8.3.10D.9.3.11 Climatic test
D.8.3.11D.9.3.12 Temperature-rise verification with solar effects – Outdoor units only
D.8.3.12D.9.3.13 Verification of resistance of insulating materials to abnormal heat and fire
92 D.8.3.13D.9.3.14 Degree of protection – Enclosed equipment
D.8.3.14D.9.3.15 Clearance and creepage distances
D.8.4D.9.4 Electromagnetic compatibility tests
D.8.5.2D.9.5.2 Electrical durability
93 Annex E
(normative)
E.1 Object
E.2 Normative references
E.3 Terms, definitions and index of terms
E.3.1
E.3.2
94 E.3.3
E.4 Classification
E.5 Characteristics
E.6 Product information
E.6.1 Nature of information
E.6.2 Marking
E.6.3 Instructions for installation, operation and maintenance, decommissioning and dismantling
95 E.7 Normal service, mounting and transport conditions
E.8 Constructional and performance requirements
E.9 Tests
E.9.1 General
Table E.1 – List of tests for terminal connections a with aluminium cables
96 E.9.2 Current cycling test
E.9.2.2 Preparation
E.9.2.3 Test arrangement
Figure E.1 – General test arrangement
97 Table E.2 – Conductor length for current cycling test as per conductor cross-section
98 Table E.3 – Equalizer dimensions
E.9.2.4 Temperature measurements
99 E.9.2.5 Test method
Table E.4 – Starting test current for the current cycling test
100 E.9.2.6 Acceptance criteria
101 Table E.5 – Example of stability factor calculation
E.9.3.2 Pull-out test
102 Table E.6 – Test values for flexion and pull-out test for cables
103 Table E.7 – Test aluminium cable for test currents up to 800 A a, d
104 Table E.8 – Test aluminium bars for test currents above 150 A and up to 3 150 A a, f
105 Annex F
(informative)
F.1 General
F.2 Test methods
F.2.1 General
F.2.2 General case for AC switches and/or disconnectors
F.2.3 General case for AC fused combination units and fuse disconnectors
106 F.2.4 Switches and/or disconnectors of rated current not exceeding 400 A
F.2.5 Fused combination units and fuse disconnectors of rated current not exceeding 400 A
107 F.3 Test procedure
Figure F.1 – Example of power loss measurement according to F.2.2
108 Figure F.2 – Example of power loss measurement according to F.2.3
109 Figure F.4 – Example of power loss measurement according to F.2.5
110 Bibliography
112 undefined
115 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
119 English
CONTENTS
124 FOREWORD
126 INTRODUCTION
127 1 Scope
128 2 Normative references
129 3 Terms, definitions and index of terms
3.1 General
3.2 Alphabetical index of terms
130 3.3 General terms
132 4 Classification
4.1 According to the utilization category
4.2 According to the method of operation
4.2.1 Manually operated equipment
4.2.2 Remotely operated equipment
133 4.3 According to suitability for isolation
4.4 According to the degree of protection provided
4.5 Summary of symbols for equipment types
5 Characteristics
5.1 Summary of characteristics
Tables
Table 1 – Summary of equipment definitions
134 5.2 Type of equipment
5.3 Rated and limiting values for the main circuit
5.3.1 General
5.3.2 Rated voltages
5.3.3 Currents
5.3.4 Rated frequency
135 5.3.5 Rated duty
5.3.6 Normal load and overload characteristics
5.3.7 Short-circuit characteristics
136 5.4 Utilization category
Table 2 – Utilization categories
137 5.5 Control circuits
5.6 Auxiliary circuits
5.7 Relays and releases
5.8 Co-ordination with short-circuit protective devices (SCPD)
6 Product information
6.1 Nature of information
6.2 Marking
138 Table 3 – Product information
139 6.3 Instructions for installation, operation and maintenance, decommissioning and dismantling
7 Normal service, mounting and transport conditions
8 Constructional and performance requirements
8.1 Constructional requirements
8.1.1 General
140 8.2 Performance requirements
8.2.1 Operating conditions
141 8.2.2 Temperature-rise
8.2.3 Dielectric properties
8.2.4 Ability to make and break under no-load, normal load and overload conditions
142 Table 4 – Verification of rated making and breaking capacities (see 9.3.4.4) – Conditions for making and breaking corresponding to the various utilization categories
143 Table 5 – Verification of operational performance –Number of operating cycles corresponding to the rated operational current
Table 6 – Test circuit parameters for Table 5
144 8.2.5 Ability to make, break or withstand short-circuit currents
8.2.6 Void
8.2.7 Additional performance requirements for equipment suitable for isolation
8.2.8 Critical load current performance: DC equipment
8.2.9 Overload requirements for equipment incorporating fuses
8.3 Electromagnetic compatibility (EMC)
8.3.1 General
8.3.2 Immunity
145 8.3.3 Emission
Table 7 – Immunity tests a
Table 8 – Emission limits
146 9 Tests
9.1 Kinds of test
9.1.1 General
9.1.2 Type tests
9.1.3 Routine tests
147 9.1.4 Sampling tests
9.1.5 Special tests
9.2 Compliance with constructional requirements
9.2.1 General
148 9.3 Performance
9.3.1 General
9.3.2 Test sequences
Table 9 – List of type tests applicable to a given equipment
149 9.3.3 General test conditions
Table 10 – Overall scheme of test sequences
152 9.3.4 Test sequence I: general performance characteristics
153 Table 11 – Test sequence I: general performance characteristics
156 9.3.5 Test sequence II: operational performance capability
Table 12 – Temperature-rise limits for terminals and accessible parts
157 Table 13 – Test sequence II: operational performance capability
158 9.3.6 Test sequence III: short-circuit performance capability
159 Table 14 – Test sequence III: short-circuit performance capability
162 9.3.7 Test sequence IV: conditional short-circuit current
163 Table 15 – Test sequence IV: conditional short-circuit current –circuit-breaker protected
164 Table 16 – Test sequence IV: conditional short-circuit current – fuse protected
165 9.3.8 Test sequence V: overload performance capability
166 9.3.9 Test sequence VI: critical load current performance of equipment with a DC rating
Table 17 – Test sequence V: overload performance capability
168 9.4 Electromagnetic compatibility tests
9.4.1 General
Table 18 – Number of operating cycles corresponding to the critical load current
Table 19 – Test circuit parameters for Table 18
Table 20 – Test sequence VI: critical load current performanceof equipment with a DC rating
169 9.4.2 Immunity
9.4.3 Emission
9.5 Special tests
9.5.1 Mechanical and electrical durability
9.5.2 Mechanical durability
9.5.3 Electrical durability
170 9.5.4 Damp heat, salt mist, vibration and shock
171 Annexes
Annex A (normative) Equipment for direct switching of a single motor
A.1 General
A.2 Rated
A.2.1 Intermittent periodic duty or intermittent duty
A.2.2 Temporary duty
A.3 Making and breaking capacities
A.4 Utilization category
172 Table A.1 – Utilization categories
173 Table A.2 – Rated making and breaking capacity conditionscorresponding to several utilization categories
174 A.5 Operational performance
Table A.3 – Relationship between current broken Ic and off-time for the verification of the rated making and breaking capacities
Table A.4 – Operational performance –Conditions for making and breaking corresponding to several utilization categories
175 A.6 Mechanical durability
A.7 Electrical durability
A.8 Verification of making and breaking capacities
A.9 Operational performance test
A.10 Special tests
A.10.1 General
176 A.10.2 Mechanical durability test
A.10.3 Electrical durability test
177 A.11 Critical load current performance for DC equipment
Table A.5 – Verification of the number of on-load operating cycles –Conditions for making and breaking corresponding to several utilization categories
178 Annex B (informative) Items subject to agreement between manufacturer and user
179 Annex C (normative) Single pole operated three-pole switches
C.1 General
Figure C.1 – Typical arrangements
180 C.2 Tests
C.3 Test set-up and sequence
C.3.1 Making and breaking capacities (9.3.4.3) and operational performance (9.3.5.2)
C.3.2 Fuse protected short-circuit test (9.3.7.3)
C.4 Condition of equipment after tests
C.5 Instructions for use
181 Annex D (normative) Switches, disconnectors, switch-disconnectors and fuse-combination units for use in photovoltaic (PV) DC applications
D.1 General
D.1.1 Background
D.1.2 Object
D.2 Normative references
D.3 Terms and definitions
182 D.4 Classification
D.4.1 According to the utilization category
D.5 Characteristics
Table D.1 – Utilization categories
183 D.6 Product information
D.7 Normal service, mounting and transport conditions
D.8 Constructional and performance requirements
Table D.2 – Service arrangements
Table D.3 – Environmental conditions
184 Table D.4 – Rated impulse withstand levels for PV switches, PV disconnectors, PV switch-disconnectors or PV fuse-combination units
185 Table D.5 – Verification of rated making and breaking capacities (see 9.3.4.4) – Conditions for making and breaking corresponding to the DC-PV category
186 Table D.6 – Number of operating cycles
Table D.7 – Test circuit parameters for Table D.6
187 D.9 Tests
188 Table D.8 – Overall scheme of test sequences
190 Table D.9 – Number of operating cycles corresponding to the critical load current
Table D.10 – Test circuit parameters for Table D.9
193 Annex E (normative) Additional requirements for LV switchgear intended for connection of aluminium conductors
E.1 Object
E.2 Normative references
E.3 Terms, definitions and index of terms
194 E.4 Classification
E.5 Characteristics
E.6 Product information
E.6.1 Nature of information
E.6.2 Marking
E.6.3 Instructions for installation, operation and maintenance, decommissioning and dismantling
195 E.7 Normal service, mounting and transport conditions
E.8 Constructional and performance requirements
E.9 Tests
E.9.1 General
Table E.1 – List of tests for terminal connections a with aluminium cables
196 E.9.2 Current cycling test
197 Figures
Figure E.1 – General test arrangement
Figure E.2 – Mounting of terminals for the current cycling test
198 Table E.2 – Conductor length for current cycling test as per conductor cross-section
Table E.3 – Equalizer dimensions
200 Table E.4 – Starting test current for the current cycling test
201 E.9.3 Mechanical properties of terminals
Table E.5 – Example of stability factor calculation
202 E.9.4 Test for insertability of unprepared round aluminium conductors having the maximum cross-section
Table E.6 – Test values for flexion and pull-out test for cables
203 Table E.7 – Test aluminium cable for test currents up to 800 A a, d
204 Table E.8 – Test aluminium bars for test currents above 150 A and up to 3 150 A a, f
205 Annex F (informative) Power loss
F.1 General
F.2 Test methods
F.2.1 General
F.2.2 General case for AC switches and/or disconnectors
F.2.3 General case for AC fused combination units and fuse disconnectors
206 F.2.4 Switches and/or disconnectors of rated current not exceeding 400 A
F.2.5 Fused combination units and fuse disconnectors of rated current not exceeding 400 A
207 F.3 Test procedure
Figure F.1 – Example of power loss measurement according to F.2.2
208 Figure F.2 – Example of power loss measurement according to F.2.3
Figure F.3 – Example of power loss measurement according to F.2.4
209 Figure F.4 – Example of power loss measurement according to F.2.5
210 Bibliography

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