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BS EN IEC 62271-202:2022 - TC Tracked Changes. High-voltage switchgear and controlgear - AC prefabricated substations for rated voltages above 1 kV and up to and including 52 kV, 2022
- 30462301
- A-30408461 [Go to Page]
- undefined
- Annex ZA (normative)Normative references to international publicationswith their corresponding European publications [Go to Page]
- English [Go to Page]
- CONTENTS
- FOREWORD
- INTRODUCTION
- 1 Scope
- 2 Normative references
- 3 Terms and definitions [Go to Page]
- 3.1 General terms and definitions
- 3.2 Assemblies of switchgear and controlgear
- 3.3 Parts of assemblies
- 3.4 Switching devices
- 3.5 Parts of switchgear and controlgear
- 3.6 Operational characteristics of switchgear and controlgear
- 3.7 Characteristic quantities
- 3.8 Index of definitions
- 4 Normal and special service conditions [Go to Page]
- 4.1 Normal service conditions [Go to Page]
- 4.1.1 General
- 4.1.2 Indoor switchgear and controlgear
- 4.1.3 Outdoor switchgear and controlgear
- 4.1.101 Low-voltage switchgear and controlgear
- 4.1.102 Power transformer
- 4.2 Special service conditions [Go to Page]
- 4.2.1 General
- 4.2.2 Altitude
- 4.2.3 Exposure to pollution
- 4.2.4 Temperature and humidity
- 4.2.5 Exposure to abnormal vibrations, shock or tilting
- 4.2.6 Wind speed
- 4.2.7 Other parameters
- 5 Ratings [Go to Page]
- 5.1 General
- 5.2 Rated voltage (Ur)
- 5.3 Rated insulation level (Ud, Up, Us)
- 5.4 Rated frequency (fr)
- 5.5 Rated continuous current (Ir)
- 5.6 Rated short-time withstand current (Ik) [Go to Page]
- 5.6.101 Rated short-time withstand current of high-voltage switchgear and controlgear and high-voltage interconnection (Ik)
- 5.6.102 Rated short-time phase to earth withstand current (Ike)
- 5.6.103 Rated short-time withstand currents of low-voltage switchgear and controlgear and low-voltage interconnection (Icw)
- 5.7 Rated peak withstand current (Ip) [Go to Page]
- 5.7.101 Rated peak phase to earth withstand current (Ipe)
- 5.7.102 Rated peak withstand currents of low-voltage switchgear and controlgear and low-voltage interconnection (Ipk)
- 5.8 Rated duration of short-circuit (tk) [Go to Page]
- 5.8.101 Rated duration of short-circuit (tk)
- 5.8.102 Rated duration of phase to earth short-circuit (tke)
- 5.8.103 Rated duration of short-circuits for low-voltage switchgear and controlgear and low-voltage interconnection
- 5.8.104 Rated duration of short-circuits for power transformers
- 5.9 Rated supply voltage of auxiliary and control circuits (Ua)
- 5.10 Rated supply frequency of auxiliary and control circuits
- 5.11 Rated pressure of compressed gas supply for controlled pressure systems
- 5.101 Rated power of prefabricated substation and class of enclosure [Go to Page]
- 5.101.1 Rated power of the prefabricated substation
- 5.101.2 Rated class of enclosure
- 5.102 Ratings of the internal arc classification (IAC) [Go to Page]
- 5.102.1 General
- 5.102.2 Types of accessibility (A, B, AB)
- 5.102.3 Rated arc fault currents (IA, IAe)
- 5.102.4 Rated arc fault duration (tA, tAe)
- 6 Design and construction [Go to Page]
- 6.1 Requirements for liquids in switchgear and controlgear
- 6.2 Requirements for gases in switchgear and controlgear
- 6.3 Earthing of switchgear and controlgear
- 6.4 Auxiliary and control equipment and circuits [Go to Page]
- 6.4.1 General
- 6.4.2 Protection against electric shock
- 6.4.3 Components installed in enclosures
- 6.5 Dependent power operation
- 6.6 Stored energy operation
- 6.7 Independent unlatched operation (independent manual or power operation)
- 6.8 Manually operated actuators
- 6.9 Operation of releases
- 6.10 Pressure/level indication
- 6.11 Nameplates
- 6.12 Locking devices
- 6.13 Position indication
- 6.14 Degrees of protection provided by enclosures
- 6.15 Creepage distances for outdoor insulators
- 6.16 Gas and vacuum tightness
- 6.17 Tightness for liquid systems
- 6.18 Fire hazard (flammability)
- 6.19 Electromagnetic compatibility (EMC)
- 6.20 X-ray emission
- 6.21 Corrosion
- 6.22 Filling levels for insulation, switching and/or operation
- 6.101 Protection of the prefabricated substation against mechanical stress
- 6.102 Protection of the environment due to internal defects
- 6.103 Internal arc fault
- 6.104 Enclosure [Go to Page]
- 6.104.1 General
- 6.104.2 Fire behaviour
- Table 1 – Synthetic material characteristics [Go to Page]
- [Go to Page]
- 6.104.3 Environmental considerations
- 6.104.4 Covers and doors
- 6.104.5 Ventilation openings
- 6.104.6 Partitions
- 6.105 Other provisions [Go to Page]
- 6.105.1 Provisions for dielectric tests on cables
- 6.105.2 Accessories
- 6.105.3 Operation aisle
- 6.105.4 Labels
- 6.105.5 Provisions for on-site assembly of prefabricated substation
- 6.106 Sound emission
- 6.107 Electromagnetic fields
- 6.108 Solar radiation
- 7 Type tests [Go to Page]
- 7.1 General [Go to Page]
- 7.1.1 Basics
- 7.1.2 Information for identification of test objects
- 7.1.3 Information to be included in type-test reports
- 7.2 Dielectric tests [Go to Page]
- 7.2.1 General
- Table 2 – Type tests [Go to Page]
- [Go to Page]
- 7.2.2 Ambient air conditions during tests
- 7.2.3 Wet test procedure
- 7.2.4 Arrangement of the equipment
- 7.2.5 Criteria to pass the test
- 7.2.6 Application of the test voltage and test conditions
- 7.2.7 Tests of switchgear and controlgear of Ur ≤ 245 kV
- 7.2.8 Tests of switchgear and controlgear of Ur > 245 kV
- 7.2.9 Artificial pollution tests for outdoor insulators
- 7.2.10 Partial discharge tests
- 7.2.11 Dielectric tests on auxiliary and control circuits
- 7.2.12 Voltage test as condition check
- 7.2.101 Tests on the high-voltage components
- 7.2.102 Tests on low-voltage interconnection
- 7.3 Radio interference voltage (RIV) test
- 7.4 Resistance measurement [Go to Page]
- 7.4.1 Measurement of the resistance of auxiliary contacts class 1 and class 2
- 7.4.2 Measurement of the resistance of auxiliary contacts class 3
- 7.4.3 Electrical continuity of earthed metallic parts test
- 7.4.4 Resistance measurement of contacts and connections in the main circuit as a condition check
- 7.5 Continuous current tests [Go to Page]
- 7.5.101 General
- 7.5.102 Test conditions
- Figure 1 – Measurement of power transformer temperature rise in ambient air: ∆t1
- Figure 2 – Measurement of power transformer temperature rise in an enclosure: ∆t2 [Go to Page]
- [Go to Page]
- 7.5.103 Test methods
- Figure 3 – Diagram of the preferred continuous current test method
- Figure 4 – Diagram of the continuous current test alternative method
- Figure 5 – Diagram for open-circuit test [Go to Page]
- [Go to Page]
- 7.5.104 Measurements
- 7.5.105 Acceptance criteria
- Figure 6 – Example of air temperature measurement locationsinside a non-walk-in type prefabricated substation [Go to Page]
- [Go to Page]
- 7.5.106 Continuous current test under solar radiation
- 7.6 Short-time withstand current and peak withstand current tests
- 7.7 Verification of the protection
- 7.8 Tightness tests
- 7.9 Electromagnetic compatibility tests (EMC)
- 7.10 Additional tests on auxiliary and control circuits [Go to Page]
- 7.10.1 General
- 7.10.2 Functional tests
- 7.10.3 Verification of the operational characteristics of auxiliary contacts
- 7.10.4 Environmental tests
- 7.10.5 Dielectric test
- 7.11 X-radiation test for vacuum interrupters
- 7.101 Calculations and mechanical tests [Go to Page]
- 7.101.1 Wind pressure
- 7.101.2 Roof loads
- 7.101.3 Mechanical impacts
- 7.101.4 Handling
- 7.102 Internal arc test [Go to Page]
- 7.102.1 General
- 7.102.2 Test conditions
- 7.102.3 Arrangement of the equipment
- 7.102.4 Test procedure
- 7.102.5 Criteria to pass the test
- 7.102.6 Test report
- 7.102.7 Transferability of tests results
- 7.103 Measurement or calculation of electromagnetic fields
- 8 Routine tests [Go to Page]
- 8.1 General
- 8.2 Dielectric test on the main circuit
- 8.3 Test on auxiliary and control circuits [Go to Page]
- 8.3.1 Inspection of auxiliary and control circuits, and verification of conformity to the circuit diagrams and wiring diagrams
- 8.3.2 Functional tests
- 8.3.3 Verification of protection against electric shock
- 8.3.4 Dielectric tests
- 8.4 Measurement of the resistance of the main circuit
- 8.5 Tightness test
- 8.6 Design and visual checks
- 8.101 Other functional tests
- 8.102 Tests after assembly on site
- 9 Guide to the selection of switchgear and controlgear (informative) [Go to Page]
- 9.101 General
- 9.102 Selection of rated values
- 9.103 Selection of class of enclosure
- 9.104 Internal arc fault [Go to Page]
- 9.104.1 General
- 9.104.2 Causes and preventive measures
- 9.104.3 Supplementary protective measures
- Table 3 – Locations, causes and examples of measures decreasingthe probability of internal arcs [Go to Page]
- [Go to Page]
- 9.104.4 Considerations for the selection and installation
- 9.104.5 IAC classification
- 9.105 Summary of technical requirements and ratings
- Table 4 – Single phase-to-earth arc fault current dependingon the network neutral earthing
- Table 5 – Summary of technical requirements, characteristicsand ratings relevant for prefabricated substations
- 10 Information to be given with enquiries, tenders and orders (informative) [Go to Page]
- 10.1 General
- 10.2 Information with enquiries and orders
- 10.3 Information with tenders
- 11 Transport, storage, installation, operating instructions and maintenance [Go to Page]
- 11.1 General
- 11.2 Conditions during transport, storage and installation
- 11.3 Installation [Go to Page]
- 11.3.1 General
- 11.3.2 Unpacking and lifting
- 11.3.3 Assembly
- 11.3.4 Mounting
- 11.3.5 Connections
- 11.3.6 Information about gas and gas mixtures for controlled and closed pressure systems
- 11.3.7 Final installation inspection
- 11.3.8 Basic input data by the user
- 11.3.9 Basic input data by the manufacturer
- 11.4 Operating instructions
- 11.5 Maintenance
- 12 Safety [Go to Page]
- 12.101 General
- 12.102 Electrical aspects
- 12.103 Mechanical aspects
- 12.104 Thermal aspects
- 12.105 Internal arc aspects
- 13 Influence of the product on the environment
- Annex A (normative)Internal arc fault – Method to verify the internal arc classification (IAC) [Go to Page]
- A.1 General
- A.2 Room simulation
- A.3 Indicators (for assessing the thermal effects of the gases) [Go to Page]
- A.3.1 General
- Figure A.1 – Mounting frame for vertical indicators
- Figure A.2 – Horizontal indicators [Go to Page]
- [Go to Page]
- A.3.2 Arrangement of indicators
- A.4 Tolerances for geometrical dimensions of test arrangements
- A.5 Test parameters
- Figure A.3 – Arrangement of indicators [Go to Page]
- A.6 Test procedure
- Figure A.4 – Selection of tests on high-voltage switchgearand controlgear for class IAC-A
- Figure A.5 – Selection of tests on high-voltage switchgearand controlgear for class IAC-B
- Figure A.6 – Selection of tests on high-voltage interconnections for class IAC-A
- Figure A.7 – Selection of tests on high-voltage interconnections for class IAC-B
- Annex B (normative)Test to verify the sound level of a high-voltage/low-voltagetransformer prefabricated substation [Go to Page]
- B.1 Purpose
- B.2 Test object
- B.3 Test method
- B.4 Measurements
- B.5 Presentation and calculation of the results
- Annex C (normative)Mechanical impact test [Go to Page]
- C.1 Test for the verification of the resistance to mechanical impact
- C.2 Apparatus for the verification of the protection against mechanical damage
- Figure C.1 – Impact test apparatus
- Annex D (informative)Rating of power transformers in an enclosure [Go to Page]
- D.1 General
- D.2 Mineral-oil-immersed power transformer
- D.3 Dry-type power transformer
- Figure D.1 – Mineral-oil-immersed power transformer load factor inside of the enclosure related to ambient air at the location and top-oil and winding temperature rise limits
- Figure D.2 – Dry-type power transformer load factor outside of the enclosure
- Figure D.3 – Insulation class 105 °C (A) dry-type powertransformers load factor in an enclosure
- Figure D.4 – Insulation class 120 °C (E) dry-type powertransformers load factor in an enclosure
- Figure D.5 – Insulation class 130 °C (B) dry-type powertransformers load factor in an enclosure
- Figure D.6 – Insulation class 155 °C (F) dry-type powertransformers load factor in an enclosure
- Figure D.7 – Insulation class 180 °C (H) dry-type powertransformers load factor in an enclosure [Go to Page]
- D.4 Example
- Figure D.8 – Insulation class 200 °C (H) dry-type powertransformers load factor in an enclosure
- Figure D.9 – Insulation class 220 °C (H) dry-type powertransformers load factor in an enclosure
- Annex E (informative)Examples of earthing arrangements
- Figure E.1 – Example of earthing arrangement
- Figure E.2 – Example of earthing arrangement
- Figure E.3 – Example with the framework serving as part of the main earthing conductor
- Annex F (informative)Characteristics of enclosure materials [Go to Page]
- F.1 Metals [Go to Page]
- F.1.1 Coatings
- F.1.2 Paints
- F.2 Concrete
- Table F.1 – Treatment of coatings
- Table F.2 – Tests of coatings
- Table F.3 – Test of concrete
- Annex G (informative)Evaluation of the impact of solar radiation –Simulated solar radiation continuous current test [Go to Page]
- G.1 General
- G.2 Test method [Go to Page]
- G.2.1 General
- G.2.2 Test parameters, equipment and preparation
- Figure G.1 – Indicative arrangement of laboratory radiation sources (e.g. radiant heat lamps) for continuous current test with simulated solar radiation [Go to Page]
- [Go to Page]
- G.2.3 Test procedure and application of test currents
- G.2.4 Measurements
- G.3 Evaluation of the solar radiation effects [Go to Page]
- G.3.1 Evaluation of solar radiation effects on the temperature rise of power transformer
- G.3.2 Evaluation of solar radiation effects on the temperature rise of components other than the power transformer
- G.4 Application considerations
- Annex H (informative)Installation conditions of electronic equipment [Go to Page]
- H.1 General
- H.2 Accessibility
- H.3 Application of air temperature measurements inside the prefabricated substation
- Bibliography [Go to Page]