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BSI 22/30465750 DC 2022

BSI 22/30465750 DC 2022

$45.21

BS EN IEC 60947-1 ED7. Low-voltage switchgear and controlgear – Part 1. General rules

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BSI 2022 317
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PDF Catalog

PDF Pages PDF Title
1 30465750-NC.pdf
3 121A_540e_CD.pdf
16 FOREWORD
19 INTRODUCTION
20 1 Scope
2 Normative references
24 3 Terms, definitions, symbols and reference clauses
3.1 General
25 3.2 Alphabetical index of definitions
30 3.3 General terms and definitions
33 3.4 Switching devices
36 3.5 Parts of switching devices
42 3.6 Operation of switching devices
47 3.7 Characteristic quantities
57 3.8 Tests
3.9 Ports
58 3.10 Terms and definitions concerning safety aspects
60 3.11 Symbols and references clauses for characteristics described in this document
62 4 Classification
5 Characteristics
5.1 Summary of the characteristics
5.2 Type of equipment
5.3 Rated and limiting values for the main circuit
5.3.1 Rated voltages
5.3.1.1 Rated operational voltage (Ue)
63 5.3.1.2 Rated insulation voltage (Ui)
5.3.1.3 Rated impulse withstand voltage (Uimp)
64 5.3.2 Currents
5.3.2.1 Conventional free air thermal current (Ith)
5.3.2.2 Conventional enclosed thermal current (Ithe)
5.3.2.3 Rated operational current (Ie) or rated operational power
65 5.3.2.4 Rated uninterrupted current (Iu)
5.3.3 Rated frequency
5.3.4 Rated duties
5.3.4.1 Eight-hour duty
5.3.4.2 Uninterrupted duty
5.3.4.3 Intermittent periodic duty or intermittent duty
66 5.3.4.4 Temporary duty
5.3.4.5 Periodic duty
5.3.5 Characteristics under normal load and overload conditions (see 8.2.4)
5.3.5.1 Ability to withstand motor switching overload currents
67 5.3.5.2 Rated making capacity
5.3.5.3 Rated breaking capacity
5.3.6 Short-circuit characteristics
5.3.6.1 Rated short-time withstand current (Icw)
68 5.3.6.2 Rated short-circuit making capacity (Icm)
5.3.6.3 Rated short-circuit breaking capacity (Icn)
5.3.6.4 Rated conditional short-circuit current (Iq, alternatively Icc)
5.3.7 Pole impedance of the switching device (Z)
5.3.8 Power consumption of the control circuit
5.4 Utilization category
69 5.5 Control circuits
5.5.1 Electrically or electronically controlled circuits
5.5.2 Air-supply control circuits (pneumatic or electro-pneumatic)
5.6 Auxiliary circuits
70 5.7 Relays and releases
5.8 Co-ordination with short-circuit protective devices (SCPD)
6 Product information
6.1 Nature of information
71 6.2 Marking
72 6.3 Instructions for installation, operation and maintenance, decommissioning and dismantling
73 6.4 Environmental information
7 Normal service, mounting and transport conditions
7.1 Normal service conditions
7.1.1 Ambient air temperature
74 7.1.2 Altitude
7.1.3 Atmospheric conditions
7.1.3.1 Humidity
7.1.3.2 Pollution degree
75 7.1.4 Shock and vibration
7.1.5 Other environmental categories
7.2 Conditions during transport and storage
7.3 Mounting
8 Constructional and performance requirements
8.1 Constructional requirements
8.1.1 General
76 8.1.2 Materials
8.1.2.1 General materials requirements
77 8.1.2.2 Glow wire testing
78 8.1.2.3 Test based on flammability category
8.1.3 Current-carrying parts and their connections
79 8.1.4 Clearances and creepage distances
8.1.4.1 General
8.1.4.2 Insulation coordination barriers for creepage distances
8.1.4.3 Insulation coordination barriers for clearance distances
80 8.1.4.4 Insulation using thin sheet or tape material
8.1.5 Actuator
8.1.5.1 Insulation
8.1.5.2 Direction of movement
8.1.6 Indication of the contact position
8.1.6.1 Indicating means
81 8.1.6.2 Indication by the actuator
8.1.7 Additional requirements for equipment suitable for isolation
8.1.7.1 Additional constructional requirements
8.1.7.2 Supplementary requirements for equipment with provision for electrical interlocking with contactors or circuit-breakers
82 8.1.7.3 Supplementary requirements for equipment provided with means for padlocking the open position
8.1.8 Terminals
8.1.8.1 Constructional requirements
83 8.1.8.2 Connecting capacity
8.1.8.3 Connection
8.1.8.4 Terminal identification and marking
84 8.1.9 Additional requirements for equipment provided with a neutral pole
8.1.10 Provisions for protective earthing
8.1.10.1 Constructional requirements
8.1.10.2 Protective earth terminal
85 8.1.10.3 Protective earth terminal marking and identification
8.1.10.4 Protective earth continuity
8.1.11 Dedicated enclosures for equipment
8.1.11.1 Design
86 8.1.11.2 Insulation
8.1.12 Degrees of protection of enclosed equipment
8.1.13 Conduit pull-out, torque and bending with metallic conduits
8.1.14 Limited energy source
8.1.14.1 General
8.1.14.2 Limited energy source with galvanic separation
87 8.1.14.3 Limited energy source with current limiting impedance
8.1.15 Stored charge energy circuit
8.1.16 Fault and abnormal conditions
8.1.16.1 Fault and abnormal conditionson components
8.1.16.2 Fault on PWB
88 8.1.17 Short-circuit and overload protection of ports
8.1.18 Use of voltage transient limiting device
8.2 Performance requirements
8.2.1 Operating conditions
8.2.1.1 General
8.2.1.2 Limits of operation of power operated equipment
89 8.2.1.3 Limits of operation of under-voltage relays and releases
8.2.1.4 Limits of operation of shunt releases
90 8.2.1.5 Limits of operation of current operated relays and releases
8.2.2 Temperature-rise
8.2.2.1 General
8.2.2.2 Terminals
8.2.2.3 Accessible parts
91 8.2.2.4 Ambient air temperature
8.2.2.5 Main circuit
8.2.2.6 Control circuits
8.2.2.7 Windings of coils and electromagnets
8.2.2.8 Auxiliary circuits
8.2.3 Dielectric properties
8.2.3.1 General
92 8.2.3.2 Impulse withstand voltage
8.2.3.3 Power-frequency or DC withstand voltage of the main, auxiliary and control circuits
93 8.2.3.4 Clearances
8.2.3.5 Creepage distances
94 8.2.3.6 Solid insulation
8.2.3.7 Spacing between separate circuits
8.2.3.8 Requirements for equipment with protective separation
8.2.3.9 Voltage transient limiting devices inserted between circuits subject to dielectric withstand voltage
95 8.2.4 Ability to make, carry and break currents under no-load, normal load and overload conditions
8.2.4.1 Making and breaking capacities
8.2.4.2 Operational performance
8.2.4.3 Durability
8.2.4.3.1 Mechanical durability
96 8.2.4.3.2 Electrical durability
8.2.5 Ability to make, carry and break short-circuit currents
8.2.6 Pole impedance
8.2.7 Control circuit power consumption
97 8.2.8 Leakage currents of equipment suitable for isolation
8.3 Electromagnetic compatibility (EMC)
8.3.1 General
8.3.2 Immunity
8.3.3 Emission
8.3.3.1 General
98 8.3.3.2 Harmonics
8.3.3.3 Voltage fluctuations
8.4 Embedded software
8.5 Security
9 Tests
9.1 Kinds of test
9.1.1 General
99 9.1.2 Type tests
9.1.3 Routine tests
9.1.4 Sampling tests
100 9.1.5 Special tests
9.1.5.1 General
9.1.5.2 Reliability data tests
9.1.5.3 Environmental tests
9.1.6 Verification of product capable to be reused, repaired and upgraded
9.2 Compliance with constructional requirements
9.2.1 General
9.2.2 Test of materials to abnormal heat and fire
9.2.2.1 Glow-wire test (on equipment)
101 9.2.2.2 Flammability, hot wire ignition and arc ignition tests (on materials)
9.2.3 Equipment marking
9.2.4 Enclosures for equipment
9.2.5 Mechanical and electrical properties of terminals
9.2.5.1 General conditions for tests
9.2.5.2 Tests of mechanical strength of terminals
102 9.2.5.3 Testing for damage to and accidental loosening of conductors (flexion test)
103 9.2.5.4 Pull-out test
9.2.5.4.1 Round copper conductors
9.2.5.4.2 Flat copper conductors
9.2.5.5 Test for insertability of unprepared round copper conductors having the maximum cross-section
9.2.5.5.1 Test procedure
104 9.2.5.5.2 Construction of gauges
9.2.5.6 Void
9.2.5.7 Electrical performance of screwless-type clamping units
9.2.5.8 Ageing test for screwless-type clamping units
9.2.6 Verification of the effectiveness of indication of the main contact position of equipment suitable for isolation
9.2.6.1 Effectiveness of contact position indication
9.2.6.2 Method of test
9.2.6.2.1 Dependent and independent manual operation
105 9.2.6.2.2 Dependent power operation
9.2.6.2.3 Independent power operation
106 9.2.6.3 Condition of equipment during and after test
9.2.6.3.1 Dependent and independent manual operation
9.2.6.3.2 Dependent and independent power operation
9.2.7 Limited energy source test
107 9.2.8 Stored charge energy test
9.2.9 Conduit pull-out test, torque test and bending test with metallic conduits
9.2.9.1 General
9.2.9.2 Pull-out test
9.2.9.3 Bending test
108 9.2.9.4 Torque test
9.2.10 Test of earth continuity for protective earth
9.2.10.1 General
9.2.10.2 Earth continuity test
9.2.10.3 Test results
9.2.11 Breakdown of components
9.2.11.1 General
109 9.2.11.2 Breakdown of components test
9.2.11.3 Fault on PWB
9.2.12 Short-circuit and overload protection of ports
110 9.2.13 Void
9.2.14 Wire flexing test
9.2.15 Artificial optical radiation test
9.3 Performance
9.3.1 Test sequences
9.3.2 General test conditions
9.3.2.1 General requirements
111 9.3.2.2 Test quantities
9.3.2.2.1 Values of test quantities
112 9.3.2.2.2 Tolerances on test quantities
9.3.2.2.3 Recovery voltage
9.3.2.3 Evaluation of test results
9.3.2.4 Test reports
9.3.3 Performance under no-load, normal load and overload conditions
9.3.3.1 Operation
9.3.3.2 Operating limits
9.3.3.2.1 Power operated equipment
113 9.3.3.2.2 Relays and releases
115 9.3.3.3 Temperature-rise
9.3.3.3.1 Ambient air temperature
9.3.3.3.2 Measurement of the temperature of parts
116 9.3.3.3.3 Temperature-rise of a part
9.3.3.3.4 Temperature-rise of the main circuit
118 9.3.3.3.5 Temperature-rise of control circuits
9.3.3.3.6 Temperature-rise of coils of electromagnets
9.3.3.3.7 Temperature-rise of auxiliary circuits
9.3.3.4 Dielectric properties
9.3.3.4.1 Type tests
122 9.3.3.4.2 Routine tests
9.3.3.4.3 Sampling tests for verification of clearances
123 9.3.3.4.4 Tests for equipment with protective separation
9.3.3.5 Making and breaking capacities
9.3.3.5.1 General test conditions
9.3.3.5.2 Test circuit
124 9.3.3.5.3 Characteristics of transient recovery voltage
125 9.3.3.5.4 Vacant
9.3.3.5.5 Test procedure for making and breaking capacities
9.3.3.5.6 Behaviour of the equipment during and after making and breaking capacity tests
9.3.3.6 Operational performance capability
9.3.3.7 Durability
9.3.3.7.1 General
9.3.3.7.2 Mechanical durability
126 9.3.3.7.3 Electrical durability
9.3.3.8 Pole impedance
9.3.3.9 Control circuit consumption
9.3.4 Performance under short-circuit conditions
9.3.4.1 General conditions for short-circuit tests
9.3.4.1.1 General requirements
127 9.3.4.1.2 Test circuit
128 9.3.4.1.3 Power-factor of the test circuit
9.3.4.1.4 Time-constant of the test circuit
9.3.4.1.5 Calibration of the test circuit
129 9.3.4.1.6 Test procedure
9.3.4.1.7 Behaviour of the equipment during short-circuit making and breaking tests
9.3.4.1.8 Interpretation of records
130 9.3.4.1.9 Condition of the equipment after the tests
9.3.4.2 Short-circuit making and breaking capacities
9.3.4.3 Verification of the ability to carry the rated short-time withstand current
131 9.3.4.4 Co-ordination with short-circuit protective devices and rated conditional short-circuit current
132 9.4 Tests for EMC
9.4.1 General
9.4.2 Immunity
9.4.2.1 General
9.4.2.2 Electrostatic discharges
9.4.2.3 Radiated radio-frequency electromagnetic fields
9.4.2.4 Conducted disturbances induced by radio-frequency fields
9.4.2.5 Electrical fast transients/bursts
133 9.4.2.6 Surges
9.4.2.7 Power frequency magnetic fields
9.4.2.8 Voltage dips and interruptions
9.4.2.9 Immunity to common mode disturbances
9.4.2.10 Damped oscillatory wave
9.4.2.11 Immunity to differential mode disturbances
9.4.3 Emission
9.5 Embedded software
170 Annex A (informative) Harmonisation of utilization categories for low-voltage switchgear and controlgear
173 Annex B (normative) Additional requirements for LV switchgear and controlgear intended for connection of aluminium conductors
B.1 General
B.2 Terms, definitions, symbols and reference clauses
B.2.1
B.2.2
B.2.3
174 B.3 Classification
B.4 Characteristics
B.5 Product information
B.5.1 Nature of information
B.5.2 Marking
B.5.3 Instructions for installation, operation and maintenance, decommissioning and dismantling
B.6 Normal service, mounting and transport conditions
175 B.7 Constructional and performance requirements
B.8 Tests
B.8.1 General
176 B.8.2 Current cycling test
B.8.2.1 General
B.8.2.2 Preparation
B.8.2.3 Test arrangement
179 B.8.2.4 Temperature measurements
B.8.2.5 Test method
180 B.8.2.6 Acceptance criteria
181 B.8.3 Climatic test
182 B.8.4 Mechanical properties of terminals
B.8.4.1 Flexion test
B.8.4.2 Pull-out test
183 B.8.5 Test for insertability of unprepared round aluminium conductors having the maximum cross-section
185 Annex C (normative) Degrees of protection of enclosed equipment
C.1 General
C.2 Object
C.3 Definitions
C.4 Designation
C.5 Degrees of protection against access to hazardous parts and against ingress of solid foreign objects indicated by the first characteristic numeral
C.6 Degrees of protection against ingress of water indicated by the second characteristic numeral
186 C.7 Degrees of protection against access to hazardous parts indicated by the additional letter
C.8 Supplementary letters
C.9 Examples of designations with IP Code
C.10 Marking
C.11 General requirements for tests
187 C.12 Tests for protection against access to hazardous parts indicated by the first characteristic numeral
C.13 Tests for protection against ingress of solid foreign objects indicated by the first characteristic numeral
C.13.4 Dust test for first characteristic numerals 5 and 6
C.13.5.2 Acceptance conditions for first characteristic numeral 5
188 C.14 Tests for protection against water indicated by second characteristic numeral
C.14.1 Test means
C.14.2 Test conditions
C.14.3 Acceptance conditions
C.15 Tests for protection against access to hazardous parts indicated by additional letter
C.16 Summary of responsibilities of relevant technical committees
192 Annex D (informative) Examples of clamping units and relationship between clamping unit and connecting device
D.1 Clamping unit in a connecting device
D.2 Structure of a PCB terminal block
193 D.3 Examples of clamping units
201 Annex E (informative) Description of a method for adjusting the load circuit
203 Annex F (informative) Determination of short-circuit power-factor or time-constant
F.1 Determination of short-circuit power-factor
F.1.1 Method I – Determination from DC component
F.1.2 Method II – Determination with pilot generator
204 F.2 Determination of short-circuit time-constant (oscillographic method)
205 Annex G (informative) Measurement of creepage distances and clearances
G.1 Basic principles
G.2 Use of ribs
G.3 Connection of parts of solid insulation (cemented joints)
213 Annex H (informative) Correlation between the nominal voltage of the supply system and the rated impulse withstand voltage of equipment
215 Annex I (vacant)
216 Annex J (informative) Items subject to agreement between manufacturer and user
217 Annex K (normative) Procedure to determine reliability data for electromechanical devices used in functional safety applications
K.1 General
A.1.1 Overview
K.1.1 Object
K.1.2 General requirements
218 K.2 Terms, definitions and symbols
K.2.1 Terms and definitions
219 K.2.2 Symbols
K.3 Method based on durability test results
K.3.1 General method
K.3.2 Test requirements
K.3.3 Number of samples
K.3.4 Characterization of a failure mode
220 K.3.5 Weibull modelling
K.3.5.1 Evaluation of data
K.3.5.2 Modelling method
K.3.5.3 Median rank regression
221 K.3.6 Useful life and upper limit of failure rate
K.3.6.1 Numerical method
222 K.3.6.2 Point estimate of the fractile (10 %) of the time to failure
K.3.6.3 Useful life
K.3.6.4 Upper limit of failure rate
K.3.7 Reliability data
223 K.4 Data information
K.5 Example
K.5.1 Test results
224 K.5.2 Weibull distribution and median rank regression
225 K.5.3 Useful life and failure rate
226 Annex L (normative) Terminal marking and distinctive number
L.1 General
L.2 Terminal marking of impedances (alphanumerical)
L.2.1 Coils
227 L.2.2 Electromagnetic releases
L.2.2.1 Shunt release
L.2.2.2 Under-voltage release
L.2.3 Interlocking electromagnets
228 L.2.4 Indicating light devices
L.3 Terminal marking of contact elements for switching devices with two positions (numerical)
L.3.1 Contact elements for main circuits (main contact elements)
L.3.2 Contact elements for auxiliary circuit (auxiliary contact elements)
L.3.2.1 General
229 L.3.2.2 Function number
L.3.2.3 Sequence number
230 L.4 Terminal marking of overload protection devices
231 L.5 Distinctive number
L.6 Marking of terminals for external associated electronic circuit components, contacts and complete devices
L.6.1 Marking of terminals for external associated electronic circuit components and contacts
L.6.1.1 General
L.6.1.2 Marking of terminals for external associated impedances
232 L.6.1.3 Marking of terminals for external associated contacts
234 L.6.2 Marking of terminals for external complete devices
237 Annex M (normative) Flammability test
M.1 Hot wire ignition test (HWI)
M.1.1 Test sample
M.1.2 Description of test apparatus
238 M.1.3 Conditioning
M.1.4 Test procedure
M.2 Arc ignition test (AI)
M.2.1 Test sample
M.2.2 Description of test apparatus
239 M.2.3 Conditioning
M.2.4 Test procedure
240 M.3 HWI and AI requirements
242 Annex N (normative) Requirements and tests for equipment with protective separation
N.1 General
N.2 Terms and definitions
244 N.3 Requirements
N.3.1 General
N.3.2 Dielectric requirements
N.3.2.1 Creepages
N.3.2.2 Clearances
N.3.3 Construction requirements
245 N.4 Tests
N.4.1 General
N.4.2 Dielectric tests
N.4.2.1 Creepages verification
N.4.2.2 Clearances verification
N.4.2.2.1 Condition of the device for test
N.4.2.2.2 Application of the test voltage
N.4.2.2.3 Impulse test voltage
N.4.2.2.4 Test
N.4.2.2.5 Results to be obtained
246 N.4.3 Test method for implementing protective impedance
247 N.4.4 Touch current measurement
248 N.4.5 Examples of constructional measures
250 Annex O (vacant) Environmentally conscious design
251 Annex P (informative) Terminal lugs for low voltage switchgear and controlgear connected to copper conductors
252 Annex Q (normative) Special tests – Tests for environmental categories
Q.1 General
Q.2 Classification of equipment
253 Q.3 Tests
Q.3.1 General test conditions
Q.3.2 Test sequences
258 Annex R (normative) Application of the metal foil for dielectric testing on accessible parts during operation or adjustment
R.1 General
R.2 Object
259 R.3 Definition of zones
R.3.1 General
R.3.2 Application of metal foil on accessible parts during normal operation or adjustment
267 Annex S (normative) Digital inputs and outputs
S.1 General
S.2 Terms and definitions
S.3 Functional requirements
S.3.1 Rated values and operating ranges
268 S.3.2 Digital I/Os
S.3.2.1 General
270 S.3.2.2 Digital inputs (current sinking)
S.3.2.2.1 General
S.3.2.2.2 Terminology (U/I operation regions)
271 S.3.2.2.3 Standard operating ranges for digital inputs (current sinking)
S.3.2.2.4 Additional requirements
S.3.2.3 Digital outputs for alternating currents (current sourcing)
S.3.2.3.1 General
272 S.3.2.3.2 Rated values and operating ranges (alternating current)
273 S.3.2.3.3 Additional requirements
S.3.2.3.3.1 Output indicators
S.3.2.3.3.2 Protected outputs
274 S.3.2.3.3.3 Short-circuit-proof outputs
S.3.2.3.3.4 Non-protected outputs
S.3.2.3.3.5 Electromechanical relay outputs
S.3.2.4 Digital outputs for direct current (current sourcing)
S.3.2.4.1 General
S.3.2.4.2 Rated values and operating ranges (direct current)
276 S.3.2.4.3 Additional requirements
S.4 Verification of input/output requirements
S.4.1 General
277 S.4.2 Verification of digital inputs
S.4.2.1 Operating range test
S.4.2.2 Reversal of signal polarity test (withstand test)
S.4.3 Verification of digital outputs
S.4.3.1 Operating range test
278 S.4.3.2 Test of protected, not-protected, and short-circuit proof outputs
S.4.3.3 Reversal of signal polarity test (withstand test)
S.4.4 Behaviour of the equipment
279 S.5 General information to be provided by in the product documentationmanufacturer
S.5.1 Information on digital inputs (current sinking)
S.5.2 Information on digital outputs for alternating currents (current sourcing)
280 S.5.3 Information on digital outputs for direct current (current sourcing)
S.6 Digital input standard operating range equations
282 Annex T (normative) Extended functions within electronic overload relays
T.1 Object
T.1.1 General
T.1.2 Ground/earth fault detection function
T.2 Terms and definitions
283 T.3 Classification of electronic overload relays
T.4 Types of relays with ground/earth fault detection function
T.5 Performance requirements
T.5.1 Limits of operation of ground/earth fault electronic overload relays
284 T.5.2 Limits of operation of ground/earth fault current sensing electronic relays Type CII(-A and -B)
T.5.3 Limits of operation of voltage asymmetry relays
T.5.4 Limits of operation of phase reversal relays
T.5.5 Limits of operation of current imbalance relays
T.5.6 Limits of operation of over-voltage relays and releases
285 T.6 Tests
T.6.1 Limits of operation of ground/earth fault current sensing electronic relays Types CI and CII (-A and -B)
T.6.2 Verification of inhibit function of ground/earth fault current sensing electronic relays Type CII (-A and -B)
T.6.3 Current asymmetry relays
T.6.4 Voltage asymmetry relays
286 T.6.5 Phase reversal relays
T.6.6 Over-voltage relays
T.7 Routine and sampling tests
287 Annex U (informative) Examples of control circuit configurations
U.1 External control device
U.1.1 Definition
U.1.2 Diagrammatic representation of an external control device
U.1.3 Parameters of an external control device
288 U.2 Control circuit configurations
U.2.1 Equipment with external control supply
U.2.1.1 Single supply and control input
U.2.1.2 Separate supply and control inputs
U.2.2 Equipment with several external control supplies
289 U.2.3 Equipment with bus interface (may be combined with other circuit configurations)
290 Annex V (vacant)
291 Annex W (normative) Procedure to establish material declaration Determinationing of critical DC load current in DC devices
W.1 General
W.2 Determination of critical DC load current
293 Annex X (normative) Co-ordination between circuit-breaker, MPSD or CPS and another short-circuit protective device associated in the same circuit
X.1 General
X.2 Object
294 X.3 General requirements for the co-ordination of a circuit-breaker, MPSD or CPS with another SCPD
X.3.1 General considerations
X.3.2 Take-over current (IB)
X.3.3 Behaviour of C1 in association with another SCPD
X.4 Type and characteristics of the associated SCPD
295 X.5 Verification of selectivity
X.5.1 General
X.5.2 Consideration of selectivity by desk study
X.5.2.1 Selectivity in the overload zone
X.5.2.2 Determination of selectivity in the fault current (short-circuit) zone
296 X.5.2.3 Determination of selectivity limit current for specific installation conditions
X.5.3 Selectivity determined by test
297 X.6 Verification of back-up protection
X.6.1 Determination of the take-over current
X.6.2 Verification of back-up protection
298 X.6.3 Tests for verification of back-up protection
299 X.6.4 Results to be obtained
304 Annex Y (normative) Additional requirements for low-voltage switchgear a controlgear – equipment or devices incorporating a built-in communication interface complying with IEC 61131-9
Y.1 General
Y.2 Void
Y.3 Void
Y.4 Void
Y.5 Characteristics
Y.5.1 Rated and limiting values for SDCI
305 Y.6 Product information
Y.7 Void
Y.8 Constructional and performance requirements
Y.8.1 Constructional requirements
Y.8.1.1 Wiring, connectors and power
Y.8.2 Electromagnetic compatibility (EMC)
Y.9 Tests
Y.9.1 Kinds of tests
Y.9.1.1 Type tests
306 Annex Z (informative) Power loss of the main poles of switchgear and controlgear
Z.1 General
Z.2 Determination method
Z.2.1 General
Z.2.2 AC devices without fuse links
307 Z.2.3 AC devices incorporating fuse links
Z.2.4 AC devices without fuse links and having a rated current not exceeding 400 A
308 Z.2.5 AC devices with fuse links and having a rated current not exceeding 400A
Z.2.6 DC devices
Z.3 Test conditions
309 Z.4 Test procedure
Z.4.1 General
Z.4.2 Voltage drop measurement
Z.4.3 Current measurement
314 Bibliography

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BSI 22/30465750 DC 2022
$45.21