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IEC 63027:2023

(Main)

Photovoltaic power systems - DC arc detection and interruption

Photovoltaic power systems - DC arc detection and interruption

IEC 63027:2023 applies to equipment used for the detection and optionally the interruption of electric DC arcs in photovoltaic (PV) system circuits. The document covers test procedures for the detection of series arcs within PV circuits, and the response times of equipment employed to interrupt the arcs.
The document defines reference scenarios according to which the testing is conducted. This document covers equipment connected to systems not exceeding a maximum PV source circuit voltage of 1 500 V DC. This document provides requirements and testing procedures for arc-fault protection devices used in PV systems to reduce the risk of igniting an electrical fire.

Systèmes photovoltaïques - Détection et interruption d’arc en courant continu

IEC 63027:2023 s’applique aux équipements utilisés pour la détection et éventuellement pour l’interruption des arcs électriques en courant continu des circuits des systèmes photovoltaïques (PV). Il couvre les procédures d’essai de détection des arcs en série dans les circuits PV, et les temps de réponse de l'équipement utilisé pour interrompre les arcs.
Le document définit les scénarios de référence selon lesquels les essais sont réalisés. Le présent document couvre les équipements reliés à des systèmes qui ne dépassent pas une tension maximale de circuit de source PV de 1 500 V en courant continu. Le présent document fournit des exigences et des procédures d’essai pour les dispositifs de protection contre les défauts d’arc utilisés dans les systèmes PV afin de réduire le risque d’incendie d’origine électrique.

General Information

Status
Published
Publication Date
02-May-2023
ICS
27.160 - Solar energy engineering
Technical Committee
TC 82 - Solar photovoltaic energy systems
Drafting Committee
WG 6 - TC 82/WG 6
Current Stage
PPUB - Publication issued
Start Date
05-May-2023
Completion Date
03-May-2023
Ref Project

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IEC 63027:2023 - Photovoltaic power systems - DC arc detection and interruption Released:5/3/2023IEC 63027:2023 - Photovoltaic power systems - DC arc detection and interruption Released:5/3/2023
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IEC 63027:2023 - Photovoltaic power systems - DC arc detection and interruption Released:5/3/2023
English and French language
131 pages
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IEC 63027 ®
Edition 1.0 2023-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Photovoltaic power systems – DC arc detection and interruption

Systèmes photovoltaïques – Détection et interruption d’arc en courant continu

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IEC 63027 ®
Edition 1.0 2023-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Photovoltaic power systems – DC arc detection and interruption

Systèmes photovoltaïques – Détection et interruption d’arc en courant continu

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.160  ISBN 978-2-8322-6743-1

– 2 – IEC 63027:2023 © IEC 2023
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
4 Classification . 12
4.1 General . 12
4.2 Protection coverage . 13
4.3 Method of implementation . 13
4.3.1 PCE integrated device (I) . 13
4.3.2 Stand-alone device (S) . 14
4.3.3 Distributed detection system (D) . 14
4.4 Functionality . 14
4.4.1 AFPE: Detection and interruption capability provided . 14
4.4.2 AFD: Only detection / no interruption capability provided . 14
4.5 Number of monitored strings (S) . 14
4.5.1 Single string . 14
4.5.2 Parallel string . 14
4.6 Number of input ports (I) . 14
4.7 Number of monitored channels (C) . 14
4.7.1 Single channel . 14
4.7.2 Multi channel . 15
4.8 Reconnection method . 15
4.8.1 General . 15
4.8.2 Manual reconnection . 15
4.8.3 Remote manual reconnection . 15
4.8.4 Automatic reconnection . 15
5 Ratings of AFPEs and AFDs . 15
5.1 General . 15
5.2 PCE integrated AFPEs and AFDs . 15
5.2.1 Rated and limiting values . 15
5.3 Stand-alone AFPEs and AFDs . 16
5.3.1 Rated and limiting values . 16
5.3.2 Utilization category . 17
6 Product information . 17
6.1 General . 17
6.2 PCE integrated devices . 17
6.3 Stand-alone devices . 18
6.3.1 Nature of information . 18
6.3.2 Marking . 18
6.3.3 Instructions for installation, operation and maintenance . 18
7 Normal service, mounting and transport conditions . 18
7.1 PCE integrated AFPEs . 18
7.2 Stand-alone AFPEs . 18
8 Construction and performance requirements . 19

8.1 General requirements for PCE integrated AFDs/AFPEs and stand-alone
AFDs/AFPEs . 19
8.1.1 General . 19
8.1.2 Construction requirements . 19
8.1.3 Operation in case of series arc fault event . 19
8.1.4 Reconnection capability of AFPE . 19
8.1.5 Self-test function . 20
8.2 PCE integrated AFDs and AFPEs . 21
8.3 Stand-alone AFDs and AFPEs . 21
9 Tests . 21
9.1 General . 21
9.2 Series arc fault test . 21
9.2.1 General . 21
9.2.2 Arc generator . 22
9.2.3 DC source . 23
9.2.4 Array line impedance network . 24
9.2.5 Line impedance network . 24
9.2.6 Test procedure . 25
9.2.7 Arc energy and response time measurement . 27
9.2.8 Self-test function . 27
9.2.9 Reconnection test . 28
Annex A (informative) String and channel examples . 29
A.1 General . 29
A.2 PCE integrated AFDs and AFPEs . 29
A.3 Stand-alone AFPEs . 30
A.4 Distributed AFPEs . 31
Annex B (normative) Test setups following different application cases . 32
B.1 General . 32
B.1.1 Overview . 32
B.1.2 PV source models .
...

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