PHOTOVOLTAIC SYSTEM POWER CONVERSION EQUIPMENT –DESIGN QUALIFICATION AND TYPE APPROVAL1 ScopeThis document lays down IEC requirements for the design qualification of power conversionequipment (PCE) suitable for long-term operation in terrestrial photovoltaic (PV) systems.This document covers electronic power conversion equipment intended for use in terrestrial PVapplications. The term PCE refers to equipment and components for electronic powerconversion of electric power into another kind of electric power with respect to voltage, current,and frequency. This document is suitable for PCE for use in both indoor and outdoor climatesas defined in IEC 60721 -3-3 and IEC 60721 -3-4. Such equipment may include, but is not limitedto, grid-tied and off-grid DC-to-AC PCEs, DC-to-DC converters, battery charger converters, andbattery charge controllers.This document covers PCE that is connected to PV arrays that do not nominally exceed amaximum circuit voltage of 1 500 V DC. The equipment may also be connected to systems notexceeding 1 000 V AC at the AC mains circuits, non-main AC load circuits, and to other DCsource or load circuits such as batteries. If particular ancillary parts whereby manufacturersand models are specified in the manual for use with the PCE, then those parts are tested withthe PCE.Exceptions:a) This document does not address characteristics of power sources other than PV systems,such as wind turbines, fuel cells, rotating machine sources, etc.b) This document does not address the characteristics of power electronic conversionequipment fully integrated into photovoltaic modules. Separate standards exist or are indevelopment for those types of devices. It is, however, applicable to devices where themanufacturer explicitly specifies the capability of full detachment from and subsequentreattachment to the PV module or if the input and output terminals can be accessed and aspecification sheet for the PCE is available. Devices meeting these requirements may betested as individual samples independent from the PV module.c) This document does not apply to power conversion equipment with integrated (built-in)electrochemical energy storage (e.g. lead acid or lithium-ion). It is, however, applicable toequipment where the manufacturer specifies and permits complete removal of theelectrochemical energy storage from the PCE so that stand-alone assessment of the PCEwith the storage removed becomes possible.The object of the test sequences contained herein is to establish a basic level of durability andto show, as far as it is possible within reasonable constraints of cost and time, that the PCE iscapable of maintaining its performance after prolonged exposure to the simulated environmentalstresses described herein that are based on the intended use conditions specified by themanufacturer. Optional tests contained herein may be selected depending on the intendedinstallation, market, or special environmental conditions that the PCE is anticipated toexperience. The categorization imposes differentiated test sequences and test severity levelsreflecting the different requirements of mechanical and electrical components in differentenvironments.PCEs are grouped into categories based on size and installation environment.The actual life expectancy of components so qualified depends on their design, theirenvironment, and the conditions under which they are operated. Estimation of a lifetime andwear out is not generally covered by this document

IEC 62093-2022 PDF

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