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BS EN IEC 62688:2018 Concentrator photovoltaic (CPV) modules and assemblies. Safety qualification (IEC 62688:2017), 2018
- undefined
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Sampling
- Figures [Go to Page]
- Figure 1 – Schematic of a point focus dish PV concentrator
- Figure 2 – Schematic of a linear focus trough PV concentrator
- Figure 3 – Schematic of a point focus Fresnel lens PV concentrator
- 5 Marking [Go to Page]
- 5.1 Nameplate
- Figure 4 – Schematic of a linear focus Fresnel lens PV concentrator
- 5.2 Hazards [Go to Page]
- 5.2.1 High intensity light
- 5.2.2 Field connections
- Figure 5 – Field connection warning label [Go to Page]
- 5.2.3 Hot surfaces
- 6 Report [Go to Page]
- Figure 6 – Symbol for hot surface can be used
- Tables [Go to Page]
- Table 1 – Touch temperature limits
- 7 Requirements for construction – Module application classes [Go to Page]
- 7.1 General
- 7.2 Class II – general access, hazardous voltage, current and power, double insulated/reinforced insulation [Go to Page]
- 7.2.1 Electrical output
- 7.2.2 Protection
- 7.2.3 Application
- 7.3 Class 0 – Restricted access, hazardous voltage, current and power basic insulation only with no protection from faults [Go to Page]
- 7.3.2 Protection
- 7.3.3 Application
- 7.4 Class 0-X – additional fire or concentrated light hazard
- 7.5 Class III – general access limited voltage, current and power [Go to Page]
- 7.5.1 Electrical output
- 7.5.2 Protection
- 7.5.3 Application
- 7.6 Fire safety
- 8 Construction
- 9 Modifications
- 10 Requirements for supplied documents [Go to Page]
- 10.1 General
- 10.2 Fire
- 10.3 Electrical
- 10.4 Mechanical
- 10.5 Temperature
- 10.6 Field assembly
- 10.7 Component ratings
- 11 Overcurrent protection
- 12 Metal parts [Go to Page]
- 12.1 Combinations of metals
- 12.2 Corrosion protection
- 12.3 Edges
- 13 Polymeric materials [Go to Page]
- 13.1 General [Go to Page]
- 13.1.1 Overview
- 13.1.2 Solid insulation and cemented joints
- 13.1.3 Requirements for polymers
- 13.1.4 Operational categories for CPV modules and assemblies
- 13.2 Polymers serving as an enclosure for live parts (such as a junction box, connector, or plug)
- 13.3 Polymers serving in direct support of live parts (such as integrated terminals and potting compounds)
- 13.4 Polymers serving as an outer surface of a receiver (such as a front sheet or back sheet on a flat-plate profile receiver in a medium-X assembly)
- 13.5 Polymers serving as an internal electrical barrier providing the sole insulation between live parts
- 13.6 Polymers serving as encapsulants
- 13.7 Polymers serving as adhesives for attachment (such as for a junction box)
- 13.8 Polymers serving as moisture barriers (such as edge sealants)
- 13.9 Polymers serving as gaskets or seals (such as with front glass)
- 13.10 Polymers serving as frames (such as with flat-plate profile medium-concentration receivers)
- 13.11 Polymers serving as CPV optics
- 13.12 Polymers exposed to sunlight, serving as a mechanical support, not functioning in categories 13.2 to 13.11
- 13.13 Polymers exposed to concentrated sunlight
- 14 Internal wiring and current-carrying parts [Go to Page]
- 14.1 General
- 14.2 Internal wiring
- 14.3 Splices
- 14.4 Mechanical securement
- 15 Connections [Go to Page]
- 15.1 Field connections – general requirements
- 15.2 Field wiring terminals
- 15.3 Connectors
- 15.4 Output lead or cables
- 16 Bonding and grounding [Go to Page]
- 16.1 General
- Table 2 – Sizes of terminals for supply conductors
- 16.2 Lightning protection
- 17 Protection against electric shock and energy hazards [Go to Page]
- 17.1 General
- 17.2 Fault conditions
- 17.3 Protection against electric shock [Go to Page]
- 17.3.1 General
- 17.3.2 Module classification
- 17.3.3 Creepage and clearance distances
- Table 3 – Minimum acceptable clearance distances
- Table 4 – Multiplication factors for clearances of equipment ratedfor operation at altitudes up to 5 000 m
- Table 5 – Minimum creepage distances for basic insulation
- Table 6 – Minimum creepage distances for reinforced insulation [Go to Page]
- 17.3.4 Degrees of pollution in the micro-environment
- 17.3.5 Cemented joints
- Table 7 – Rated impulse voltage
- 18 Field wiring compartments with covers [Go to Page]
- 18.1 General
- 18.2 Strain relief
- 18.3 Sharp edges
- 18.4 Conduit applications – Metallic
- 18.5 Conduit applications – Non-metallic
- 19 Requirements for testing – Test categories [Go to Page]
- 19.1 General
- 19.2 Preconditioning tests
- Table 8 – Wall thickness of polymeric boxes intended for conduit
- Table 9 – Preconditioning tests
- 19.3 General inspection
- 19.4 Electrical shock hazard
- 19.5 Fire hazard
- Table 10 – General inspection tests
- Table 11 – Electrical shock hazard tests
- Table 12 – Fire hazard tests
- 19.6 Mechanical stress
- 20 Testing [Go to Page]
- 20.1 General
- Table 13 – Fire hazard test applicability
- Table 14 – Mechanical stress tests
- Figure 7 – IEC 62688 safety test plan for CPV modules (IEC 62108:2016)
- Figure 8 – Combined IEC 62108:2016 and IEC 62688 test plan for CPV modules
- Figure 9 – IEC 62688 safety test plan for CPV assemblies (IEC 62108:2016)
- 20.2 Visual inspection [Go to Page]
- 20.2.1 General
- 20.2.2 Requirements
- Figure 10 – Combined IEC 62108:2016 andIEC 62688 test plan for CPV assemblies
- 20.3 Accessibility test [Go to Page]
- 20.3.1 Purpose
- 20.3.2 Apparatus
- 20.3.3 Procedure
- 20.3.4 Requirements
- 20.4 Grounding/Bonding path continuity test [Go to Page]
- 20.4.1 Purpose
- 20.4.2 Procedure
- 20.4.3 Requirements
- 20.5 Dielectric voltage withstand test [Go to Page]
- 20.5.1 Purpose
- 20.5.2 Procedure
- 20.5.3 Requirements
- 20.6 Wet insulation test [Go to Page]
- 20.6.1 Purpose
- 20.6.2 Procedure
- 20.6.3 Requirements
- 20.7 Reverse current overload [Go to Page]
- 20.7.1 Purpose
- 20.7.2 Procedure
- 20.7.3 Requirements
- 20.8 Thermal cycling [Go to Page]
- 20.8.1 General
- 20.8.2 Purpose
- 20.8.3 Procedure
- 20.8.4 Requirements
- 20.9 Humidity freeze [Go to Page]
- 20.9.1 General
- 20.9.2 Purpose
- 20.9.3 Procedure
- 20.9.4 Requirements
- 20.10 Damp heat [Go to Page]
- 20.10.1 General
- 20.10.2 Purpose
- 20.10.3 Procedure
- 20.10.4 Requirements
- 20.11 Bypass diode thermal [Go to Page]
- 20.11.1 Purpose
- 20.11.2 Special test sample
- 20.11.3 Procedure
- 20.11.4 Requirements
- 20.12 Hot spot endurance [Go to Page]
- 20.12.1 General
- 20.12.2 Procedure
- 20.12.3 Requirements
- 20.13 Off-axis beam damage [Go to Page]
- 20.13.1 General
- 20.13.2 Purpose
- 20.13.3 Special case
- 20.13.4 Procedure
- 20.13.5 Requirements
- 20.14 Water spray [Go to Page]
- 20.14.1 General
- 20.14.2 Purpose
- 20.14.3 Procedure
- 20.14.4 Requirements
- 20.15 Mechanical load [Go to Page]
- 20.15.1 Purpose
- 20.15.2 Procedure
- 20.15.3 Requirements
- 20.16 Robustness of terminations [Go to Page]
- 20.16.1 Purpose
- 20.16.2 Types of terminations
- 20.16.3 Procedure
- 20.16.4 Requirements
- 20.17 Impulse voltage [Go to Page]
- 20.17.1 Purpose
- Figure 11 – Waveform of the impulse voltage test
- Table 15 – Impulse voltage versus maximum system voltage [Go to Page]
- 20.17.2 Requirements
- 20.18 CPV temperature test [Go to Page]
- 20.18.1 Purpose
- 20.18.2 Test apparatus
- 20.18.3 Procedure
- 20.18.4 Requirements
- 20.19 Fire test recommendation for CPV modules [Go to Page]
- 20.19.1 General
- 20.19.2 Burning brand fire tests
- Table 16 – Brand size and its number
- 20.20 CPV electrical parameters [Go to Page]
- 20.20.1 General
- 20.20.2 Maximum open-circuit voltage
- 20.20.3 Maximum short-circuit current
- 20.20.4 The procedure for calculating maximum power (Max P) is to be in accordance with the following:
- 20.21 Outdoor exposure [Go to Page]
- 20.21.1 General
- 20.21.2 Purpose
- 20.21.3 Procedure
- 20.21.4 Requirements
- 20.22 Sharp edge test [Go to Page]
- 20.22.1 General
- 20.22.2 Purpose
- 20.22.3 Procedure
- 20.22.4 Requirements
- 20.23 Blocked heat sink test [Go to Page]
- 20.23.1 Purpose
- 20.23.2 Procedure
- 20.23.3 Requirements
- 20.24 Locked rotor test [Go to Page]
- 20.24.1 Purpose
- 20.24.2 Procedure
- 20.24.3 Requirements
- Annex A (informative)Bimetallic junction [Go to Page]
- Table A.1 – Voltages developed on bimetallic junction (IEC 60943:1998, Table 3)
- Annex B (normative)Recommendations for testing of modules from production [Go to Page]
- B.1 General
- B.2 Module output power
- B.3 Insulation test
- B.4 Wet insulation test
- B.5 Visual inspection
- B.6 Cable connections
- B.7 Bypass diodes
- B.8 Ground continuity
- Annex C (normative)Alternative test method to electricity safety of CPV receivers [Go to Page]
- C.1 General
- C.2 Specifications for the proposed test method
- C.3 Test method [Go to Page]
- C.3.1 Overview
- C.3.2 Product identity
- C.3.3 Manufacturer
- C.3.4 System number
- C.4 Test procedure [Go to Page]
- C.4.1 Physical background
- Figure C.1 – Decision chart of the alternative test
- Figure C.2 – Formula (C.1) [Go to Page]
- C.4.2 Sampling
- C.4.3 Marking
- Figure C.3 – Example of the acceleration of the breakdown voltage degradation by the voltage stress [Go to Page]
- C.4.4 Test procedure
- Table C.1 – Maximum acceptable testing time [Go to Page]
- C.4.5 Pass criteria
- Figure C.4 – Fitting to the power function in the double logarithmic chart
- Bibliography [Go to Page]
