1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForUL 62093Balance-of-System Components for Photovoltaic Systems Design Qualification NaturalEnvironmentsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDIS
2、TRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForUL 62093Balance-of-System Components for Photovoltaic Systems Design Qualification Natural EnvironmentsFirst EditionEdition Date: February 24, 2017UL 62093 is an adoption of IEC 62093, Balance-of-System Components for Photovoltaic Systems D
3、esign Qualification Natural Environments (First Edition, issued March 2005). Please notethat the following clauses are National Differences: 5.1DV, 8DV, 11.1.2DV, and 11.5.3DV.This document provides a single listing of the National Differences included in the UL adoption ofthe corresponding IEC stan
4、dard.All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, ortransmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwisewithout prior permission of UL.UL provides this standards document as is without warranty of any
5、kind, either expressed or implied,including but not limited to, the implied warranties of merchantability or fitness for any purpose.In no event will UL be liable for any special, incidental, consequential, indirect or similar damages,including loss of profits, lost savings, loss of data, or any oth
6、er damages arising out of the use of or theinability to use this standards document, even if UL or an authorized UL representative has been advisedof the possibility of such damage. In no event shall ULs liability for any damage ever exceed the pricepaid for this standards document, regardless of th
7、e form of the claim.Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold ULharmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonableattorneys fees) resulting from any error or deviation introduced while purch
8、aser is storing an electronicStandard on the purchasers computer system.Copyright 2017 Underwriters Laboratories Inc.FEBRUARY 24, 2017NATIONAL DIFFERENCES FOR UL 620932UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULPrefaceThis document provid
9、es a single listing of the technical National Differences included in the UL adoptionof the corresponding IEC standard.In its IEC-based standards, UL uses the notations indicated below to identify national difference type, andthese types are additionally noted in this document. The standard may not
10、use all types of thesedeviations.D1 - These are deviations which are based on basic safety principles and requirements, elimination ofwhich would compromise safety for U.S. consumers and users of products.D2 - These are deviations based on safety practices. These are deviations for IEC requirements
11、that maybe acceptable, but adopting the IEC requirements would require considerable retesting or redesign on themanufacturers part.DC - These are deviations based on the component standards and will not be deleted until a particularcomponent standard is harmonized with the IEC component standard.DE
12、- These are deviations based on editorial comments or corrections.DR - These are deviations based on the national regulatory requirements.Each national difference contains a description of what the national difference entails. Typically one of thefollowing words is used to explain how the text of th
13、e national difference is to be applied to the base IECtext:Addition / Add - An addition entails adding a complete new numbered clause, subclause, table, figure,or annex. Addition is not meant to include adding select words to the base IEC text.Deletion / Delete - A deletion entails complete deletion
14、 of an entire numbered clause, subclause, table,figure, or annex without any replacement text.Modification / Modify - A modification is an altering of the existing base IEC text such as the addition,replacement or deletion of certain words or the replacement of an entire clause, subclause, table, fi
15、gure,or annex of the base IEC text.FEBRUARY 24, 2017 NATIONAL DIFFERENCES FOR UL 62093 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences5.1DV D2 Modification in accordance with the following additions and replacements:Add t
16、he following after the first 10 dashes preventative maintenance requirements andrecommendationsFor part (3) inverters, replace the 20th dash with If applicable, fuse(s) on the DC-side ofthe inverter, size and class.For part (3) inverters, add the following 2 dashes If applicable, inverter GFD fuse:
17、sizeand class and Overcurrent protection device (OCPD)8DV D2 Modification of item (b) by replacing it with the following:b) corrosion or discoloration of any part of the component, inside or outside;11.1.2DV D2 Modification by adding the following before the last dash: visible discoloration indicating arcing has occurred;11.5.3DV D2 Modification by adding the following new (a) and renumbering accordingly:a) The outdoor exposure test should be performed under load and not in the open-circuitstate.FEBRUARY 24, 2017NATIONAL DIFFERENCES FOR UL 620934
