IEC 62446-2:2020 pdf download – Photovoltaic (PV) systems – Requirements for testing, documentation and maintenance – Part 2: Grid connected systems – Maintenance of PV systems.
2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. This clause of IEC 62446-1:2016 is applicable, with the following exception: Addition IEC TS 61724-2, Photovoltaic system performance – Part 2: Capacity evaluation method IEC TS 61724-3, Photovoltaic system performance – Part 3: Energy evaluation method IEC TS 61836:2016 , Solar photovoltaic energy systems – Terms, definitions and symbols IEC 62020, Electrical accessories – Residual current monitors for household and similar uses (RCMs) IEC 62446-1:2016, Photovoltaic (PV) systems – Requirements for testing, documentation and maintenance – Part 1: Grid connected systems – Documentation, commissioning tests and inspection IEC TS 62446-3:2017, Photovoltaic (PV) systems – Requirements for testing, documentation and maintenance – Part 3: Photovoltaic modules and plants – Outdoor infrared thermography IEC 62548, Photovoltaic (PV) arrays – Design requirements
3.19 combiner box junction box in which the parallel connections for PV strings, subarrays or arrays are made 3.20 qualified person person, who has acquired, through training, qualification or experience or a combination of these, the knowledge and skill enabling that person to perform the required task correctly [SOURCE: IEC 62548:2016, 3.1.7 “competent person”] 3.21 PV array combiner box junction box where PV sub-arrays are connected and which may also contain overcurrent protection and/or switch-disconnection devices Note 1 to entry: Small arrays generally do not contain sub-arrays but are simply made up of strings whereas large arrays are generally made up of multiple sub-arrays. [SOURCE: IEC 62548:2016, 3.1.36] 3.22 balance of system in a renewable energy system, all components other than the mechanism used to harvest the resource (such as photovoltaic panels or modules) 3.23 lockout/tagout LOTO safety procedure used to ensure equipment is properly de-energized and prevented from being re-energized by a locking mechanism until service personnel deems it safe to do so Note 1 to entry: LOTO is a practice applying to some countries. Different safety procedures, such as the “five safety rules” of EN 50110-1 for Europe, apply in different parts of the world. 3.24 personal protective equipment PPE any device or appliance designed to be worn or held by an individual for protection against one or more health and safety hazards whilst performing live working [SOURCE: IEC 60050-651:2014, 651-23-01]
3.28 module-level monitoring MLM device or equipment used to monitor power and voltage at the PV module level Note 1 to entry: Some microinverters and module level d.c.to d.c. converters include such a functionality. 3.29 micro-crack pressure or stress induced crack in a crystalline PV module cell that is not generally visible to the naked eye Note 1 to entry: One visible manifestation of micro-cracks is a discoloration effect known in the PV industry as “snail trails.” Snail trails result from moisture diffusion through the micro-crack to the cell surface. Subsequent corrosive or chemical reactions cause very noticeable discoloration along the paths of the cracks. Not all micro- cracks result in snail trails, but all snail trails are caused by cracks or micro-cracks. 3.30 data acquisition system DAS system for monitoring various PV system parameters, e.g. inverter status, power output, voltages and currents (at array, sub-array, string and/or module level), solar irradiance, temperatures, wind speed, etc. 3.31 shutdown control automated de-energization of targeted PV array d.c. circuits by either isolation, disconnection, or attenuation of voltage to safe limits Note 1 to entry: In some countries such equipment is available as “rapid shutdown” equipment for emergency services and is activated by a.c. side system disconnection or other remote control means.