BSI 24/30499547 DC 2024
$24.66
BS EN IEC 62548-1/AMD1 Amendment 1. Photovoltaic (PV) arrays – Part 1. Design requirements
| Published By | Publication Date | Number of Pages |
| BSI | 2024 | 108 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | CONTENTS |
| 10 | FOREWORD |
| 12 | 1 Scope 2 Normative references |
| 15 | 3 Terms, definitions, symbols and abbreviated terms 3.1 Terms and definitions |
| 21 | 3.2 Symbols |
| 24 | 3.3 Abbreviated terms 4 Compliance with IEC 60364 series |
| 25 | 5 PV array system configuration 5.1 General 5.1.1 Functional configuration of a PV system 5.1.2 PV system topologies |
| 26 | 5.1.3 Array electrical diagrams |
| 32 | 5.1.4 Use of PCE with multiple DC inputs 5.1.4.1 General 5.1.4.2 PCEs with DC-DC converters on the PV inputs 5.1.4.3 PCEs with multiple inputs internally connected together in the PCE 5.1.5 PV arrays using DCUs |
| 37 | 5.1.6 Series-parallel configuration 5.1.7 Batteries in systems |
| 38 | 5.1.8 Backfeed and reverse currents 5.1.9 Considerations due to prospective fault current conditions within a PV array 5.1.10 Considerations due to operating temperature |
| 39 | 5.1.11 Performance issues |
| 40 | 5.1.12 Potential induced degradation 5.1.13 Corrosion 5.1.14 Mechanical design 5.1.14.1 General |
| 41 | 5.1.14.2 Thermal aspects 5.1.15 Mechanical loads on PV structures 5.1.15.1 General 5.1.15.2 Mounting structures 5.1.15.3 Wind 5.1.15.3.1 General |
| 42 | 5.1.15.3.2 Use outside of typical applications requiring further analysis 5.1.15.4 Material accumulation on PV array |
| 43 | 6 Safety issues 6.1 General 6.2 Protection against electric shock 6.2.1 General 6.2.2 Protective measure: double or reinforced insulation 6.2.3 Protective measure: extra-low-voltage provided by SELV or PELV 6.3 Protection against thermal effects 6.3.1 General |
| 44 | 6.3.2 Protection against fire caused by arcs 6.3.3 Protection against arc flash 6.4 Protection against the effects of insulation faults 6.4.1 General |
| 45 | 6.4.2 Segregation of PV circuits from other circuits 6.4.3 Earth fault detection and indication requirements 6.4.3.1 General 6.4.3.1.1 Overview |
| 46 | 6.4.3.1.2 Systems with more than one sub-array 6.4.3.1.3 Separated sub-arrays 6.4.3.1.4 Non-separated sub-arrays |
| 47 | 6.4.3.2 Array insulation resistance detection |
| 49 | 6.4.3.3 Shock hazard protection by a residual or earth current monitoring system 6.4.3.3.1 General 6.4.3.3.2 Provisions for reset 6.4.3.4 Fire hazard protection by a residual or earth current monitoring system |
| 50 | 6.4.3.5 Fire hazard protection by an overcurrent device in the PV array functional earthing path 6.4.3.6 Earth fault indication |
| 51 | 6.5 Protection against overcurrent 6.5.1 General 6.5.2 Requirement for overcurrent protection |
| 52 | 6.5.3 Requirements for overcurrent protection of circuits 6.5.3.1 Strings 6.5.3.2 Sub-arrays 6.5.3.3 Array |
| 54 | 6.5.4 Overcurrent protection for PV systems connected to batteries |
| 55 | 6.5.5 Overcurrent protection location 6.6 Protection against effects of lightning and overvoltage 6.6.1 General |
| 56 | 6.6.2 Protection against overvoltage 6.6.2.1 General 6.6.2.2 Risk assessment for lightning transient overvoltage |
| 57 | 6.6.2.3 Surge protection devices (SPDs) 6.6.2.3.1 General 6.6.2.3.2 Surge protection devices (SPDs) DC 6.6.2.3.3 Surge protection devices (SPDs) information technology equipment 7 Selection and erection of electrical equipment 7.1 General |
| 58 | 7.2 Component requirements 7.2.1 General 7.2.2 Current rating of PV circuits |
| 59 | 7.2.3 PV modules 7.2.3.1 Operational conditions and external influences |
| 60 | 7.2.3.2 Equipment class 7.2.3.3 Additional standards for PV modules 7.2.4 PV array and PV string combiner boxes 7.2.4.1 Environmental effects 7.2.4.2 Location of PV array and PV string combiner boxes |
| 61 | 7.2.5 Fuses 7.2.5.1 Accessibility 7.2.5.2 Fuse links 7.2.5.3 Fuse bases and fuse holders 7.2.6 Circuit breakers used for overcurrent protection |
| 62 | 7.2.7 Isolation means and isolation means with breaking capabilities 7.2.7.1 General 7.2.7.2 Switch-disconnector |
| 63 | 7.2.7.3 Circuit breakers used for isolation 7.2.7.4 Isolation means with breaking capabilities incorporated in PCEs 7.2.7.4.1 General 7.2.7.4.2 Isolation means with breaking capabilities using electronics |
| 64 | 7.2.8 Cables 7.2.8.1 Size 7.2.8.1.1 General 7.2.8.1.2 Current carrying capacity (CCC) 7.2.8.2 Type |
| 66 | 7.2.8.3 Erection method 7.2.9 Plugs, sockets and connectors in PV circuits |
| 67 | 7.2.10 Wiring in combiner boxes 7.2.11 Bypass diodes 7.2.12 Blocking diodes |
| 68 | 7.2.13 Power conversion equipment (PCE) including DC conditioning units (DCUs) 7.3 Location and installation requirements 7.3.1 Isolation means 7.3.1.1 General |
| 69 | 7.3.1.2 Isolation means for power conversion equipment (PCE) |
| 71 | 7.3.2 Earthing and bonding arrangements 7.3.2.1 General 7.3.2.2 Bonding conductor size – separated systems |
| 73 | 7.3.2.3 Separate earth electrode 7.3.2.4 Equipotential bonding 7.3.2.4.1 General |
| 74 | 7.3.2.4.2 PV array bonding conductors 7.3.2.4.3 Functional earthing terminal of PV array 7.3.2.4.4 Functional earthing conductor of PV array 7.3.3 Wiring system 7.3.3.1 General |
| 75 | 7.3.3.2 Compliance with wiring standards 7.3.3.3 Wiring loops |
| 77 | 7.3.3.4 String wiring 7.3.3.5 Wiring of enclosures 7.3.3.6 Wiring identification |
| 78 | 8 Acceptance 9 Operation/maintenance 10 Marking and documentation 10.1 Equipment marking 10.2 Requirements for signs 10.3 Identification of a PV installation 10.4 Labelling of PV array and PV string combiner boxes |
| 79 | 10.5 Labelling of isolation means 10.5.1 General 10.5.2 PV array isolation means with breaking capabilities 10.6 Warning sign for anti-PID equipment 10.7 Documentation |
| 80 | Annex A (informative) Examples of signs |
| 81 | Annex B (informative) Examples of system earthing configurations in PV arrays |
| 84 | Annex C (informative) Blocking diode C.1 General C.2 Use of blocking diodes to prevent overcurrent/fault current in arrays C.3 Examples of blocking diode use in fault situations C.3.1 General C.3.2 Short circuit in PV string |
| 86 | C.4 Specification of blocking diode C.5 Heat dissipation design for blocking diode |
| 88 | Annex D (informative) Arc fault detection and interruption in PV arrays |
| 89 | Annex E (normative) DVC limits |
| 90 | Annex F (normative) Determination of maximum voltage and maximum currents in PV circuits F.1 UOC MAX F.1.1 PV array maximum voltage |
| 91 | F.1.2 PV strings constructed using DC conditioning units |
| 92 | F.2 String maximum current F.3 Calculation of potential fault currents originating from the array F.3.1 General F.3.2 String F.3.3 Sub-array F.3.4 Array |
| 93 | F.4 KI factor – general F.5 KCorr factor – under unique environmental conditions |
| 94 | F.6 KCorr factor – non optimally oriented monofacial arrays F.7 KCorr factor – bifacial arrays |
| 95 | F.8 KCorr factor – for arrays containing non-optimally oriented bifacial modules |
| 96 | Annex G (normative) Backfeed current and PV reverse currents under fault conditions G.1 General G.2 Illustrated examples |
| 98 | G.3 Backfeed currents and PV reverse currents where subarrays are not combined in the PCE |
| 100 | Annex H (normative) Anti-PID H.1 General H.2 DC bias applied during night |
| 101 | H.3 DC bias applied to array output |
| 102 | H.4 DC bias applied to AC system |
| 104 | Annex I (informative) Arc flash |
| 105 | Annex J (normative) Qualification of DCU group voltage J.1 Overview J.2 Test 1: Maximum voltage operational test procedure J.3 Test 2: Overvoltage test |
| 107 | Bibliography |
