1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForUL 62109-1Standard for Safety of power converters for use in photovoltaic power systems - Part 1: GeneralrequirementsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REP
2、RODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForUL 62109-1Standard for Safety of power converters for use in photovoltaic power systems - Part 1: GeneralrequirementsEdition: 1Edition Date: July 18, 2014UL 62109-1 is an adoption of IEC 62109-1, Safety of Power Converters fo
3、r Use in PhotovoltaicPower Systems Part 1: General Requirements (First Edition, issued April 2010). Please notethat the national difference document incorporates all of the U.S. national differences for UL62109-1.This document provides a single listing of the National Differences included in the UL
4、adoption ofthe corresponding IEC standard.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 do
5、cument as is without warranty of any 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, l
6、ost savings, loss of data, or any other 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
7、 standards document, regardless of the 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 erro
8、r or deviation introduced while purchaser is storing an electronicStandard on the purchasers computer system.Copyright 2014 Underwriters Laboratories Inc.JULY 18, 2014NATIONAL DIFFERENCES FOR UL UL 62109-12UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISS
9、ION FROM ULPrefaceThis document provides 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 i
10、n this document. The standard may not 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. Thes
11、e are deviations for IEC requirements 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 harmoniz
12、ed with the IEC component standard.DE - 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
13、 is used to explain how the text of the 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
14、- A deletion entails complete deletion 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 theaddition, replacement or deletion of certain words or the replacement of
15、an entire clause,subclause, table, figure, or annex of the base IEC text.JULY 18, 2014 NATIONAL DIFFERENCES FOR UL UL 62109-1 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences1.1.1DV DR Modification in accordance with the f
16、ollowing:Replace the maximum PV source circuit voltage of 1 500 V d.c. with 2 000 V d.c.1.1.2DV DR Modification in accordance with the following:Add new sentence before NOTE 1. PV PCE with inputs for other non-PV power sources(not specifically addressed by this standard), shall address the normal an
17、d abnormalsource specific operating characteristics including but not limited to; voltage range,current range, short circuit current, over-voltage, etc.2DV DC Addition of the following:UL 50Enclosures for Electrical EquipmentUL 67PanelboardsUL 498Attachment Plugs and ReceptaclesUL 1741Inverters, Con
18、verters, Controllers and Interconnection System Equipment for Use WithDistributed Energy ResourcesUL 3703Outline of Investigation for Solar TrackersUL 6703AOutline of Investigation for Multi-Pole Connectors for Use in Photovoltaic SystemsUL 60730-1Controls for Household and Similar Use, Part 1: Gene
19、ral Requirements, AutomaticElectrical and/or the applicable Part 2 standard from the UL 60730 seriesUL 60950-1Information Technology Equipment - Safety - Part 1: General RequirementsANSI/NFPA 70National Electrical Code3.9DV DE Modification in accordance with the following:Add (Restricted Access Loca
20、tion) after the term, closed electrical operating area.JULY 18, 2014NATIONAL DIFFERENCES FOR UL UL 62109-14UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL3.16DV DR Modification by adding the following note:NOTE The limits for classification D
21、VC A shown in Table 6 have been aligned with the relevant voltagelimits in NFPA 70, Article 725, for Class 2 Circuits which are 42,4 Vpk or 60 Vdc in dry locations and 21,2Vpk or 30 Vdc in wet areas.3.24DV DR Modification by replacing note 1 and note 2 with the following:NOTE In this international s
22、tandard, protection against electric shock is dependent on the decisivevoltage classification and we have aligned classification DVC A shown in Table 6 with the relevantvoltage limits in NFPA 70, Article 725, for Class 2 Circuits which are 42,4 Vpk or 60 Vdc in dry locationsand 21,2 Vpk or 30 Vdc in
23、 wet areas.3.39DV DR Modification by replacing the term and definition with the following:Isc MAX: absolute maximum prospective short circuit current (a.c. or d.c) that a port of thePCE is rated to have connected to it.NOTE This could be the short circuit from a PV array, battery, energy storage dev
24、ice, generator orelectric utility grid. For a PV source it would account for worst-case conditions of ambient temperature,irradiance, etc. For NEC compliant installation, this Maximum Input Short Circuit Current rating equatesto 1,25 x Isc of the PV array.3.42DV DE DeletionDelete 3.42.3.43DV DR Modi
25、fication by replacing with the following:mains (AC Mains / AC supply connection): a.c. electricity supply system to which the PCEis designed to be connected3.44.1DV DR Modification by adding the following new term and definition:maximum voltage: The maximum voltage to which the PCE can be connected
26、withoutdamage. This may be indicated as a maximum voltage or voltage range.NOTE The PCE is not required to operate normally at the maximum voltage or over the entire voltagerange.3.53DV DR Modification by the adding the following to the end of the definition:and electrically connected by means of a
27、NEC-compliant permanently installed/fixedwiring system.3.57DV DE Modification by the adding the following note to the definition:NOTE NEMA configurations; 1-15, 2-15, 2-20, 5-15 and 5-20 plugs and outlets as specified in IEC 60083are considered to be non-industrial within the meaning of this standar
28、d.JULY 18, 2014 NATIONAL DIFFERENCES FOR UL UL 62109-1 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL3.58DV DR Modification by the replacing the definition and note with the following:equipment which is intended for connection to the buildi
29、ng installation wiring via an industrial plug andsocket-outlet or an appliance coupler, or both, complying with IEC 60309 or with a comparable nationalstandard. PV circuits that use connectors that require a tool to disconnect are considered pluggabletype B.3.72DV DR Modification by the replacing th
30、e glossary term with the following:protective earthing (equipment-grounding)3.73DV DR Modification by the replacing the glossary term with the following:protective earthing (equipment-grounding) conductor3.74DV DR Modification by the replacing the glossary term with the following:protective earthing
31、 (equipment-grounding) terminal3.92DV.1 DR Addition of the following new term and definition:stabilized temperature: an operating condition where component temperatures are notchanging. This condition is verified, by three successive temperature readings, taken atintervals of 10 percent of the previ
32、ously elapsed duration of the test, and not less than 15minutes apart, indicate no further increase in temperature. This term also covers variationsof thermal stability or maximum temperature and is to be applied unless otherwisespecified by requirements or parameters within a specific test method.3
33、.97.1DV DR Modification by adding the following new term and definition:voltage operating range: The input and/or output range of voltage over which the PCE israted to operate including all modes of operation. If this parameter is adjustable, themaximum range of adjustment shall be included.4.2.2.7.
34、1DV DR Modification by the replacing Photovoltaic supply sources, Clause4.2.2.7.1, with the following:4.2.2.7.1DV.1 Where the results of a test could be affected by the voltage versus currentcharacteristic of the supply, the PV source used shall simulate the voltage versus currentcharacteristic of t
35、he largest PV array for which the equipment is rated, with regard to opencircuit voltage (VMAX PV) and short-circuit current (Isc MAX). The input source shall notlimit the operation of the PCE during normal operation testing. The supply shall beadjusted to operate within the PCE rated Input Voltage
36、Operating Range.4.2.2.7.1DV.2 Tests performed under abnormal or fault conditions shall be tested with asource capable of the PCE rated Maximum Input Source Short Circuit Current for that input(Isc MAX). If provided, any included or specified PCE overcurrent protective devices shallnot be altered or
37、changed.NOTE When selecting test conditions for the PV supply, consideration has to be given to thecharacteristic of PV arrays: when maximum voltage is available, the available current is at a minimum,and when maximum current is available, the voltage is at a minimum. It is not expected that any tes
38、tshould be run with both the PV source current and voltage at their maximum values.JULY 18, 2014NATIONAL DIFFERENCES FOR UL UL 62109-16UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4.2.2.7.1DV.3 PCE connected to or specified for use with a s
39、pecific source (withestablished electrical operating limits) may be tested with that specific source or a sourcethat simulates the operating condition of that source.4.2.2.7.2DV DR Modification by replacing with the following:Battery inputs may be supplied from either a d.c. power supply or from a b
40、attery bank,except that for fault testing, where the magnitude of the available fault current could affectthe results of the test, a battery bank of the size, type and ratings defined in the productinstallation instructions shall be used.4.2.2.11DV DR Modification in accordance with the following:Ad
41、d (Isc Max) after short-circuit current in the last sentence.4.3.2.1DV DC Modification of the last paragraph, second dash, in accordance with thefollowing:Replace applicable IEC component standards with applicable component standards.4.4.2.1DV DR Modification by the replacing the note with the follo
42、wing:NOTE When configuring sources for fault testing, consideration shall be given to the fact that for somefault tests, a source limited to less than the maximum rated current or power of that input of the PCEmay be more severe than if a maximum rated current source was used. Test duration may be l
43、onger,and heating in the fault path may be more severe under limited conditions. For example on a PV input,it may be more severe to test with a simulated array limited to less than the value defined in 4.2.2.7.1.4.4.2.2DV DR Modification of the first paragraph in accordance with the following:Replac
44、e stabilization of with stabilized.4.4.3.1DV DR Modification by the replacing part (c) with the following:c) by verification of i) or ii):i) by inspection to ensure a fuse connected between the protectiveearthing terminal and the protective earthing conductor in the test setuphas not opened; the fus
45、e shall be rated 3 A non-time-delay (for equipmentrated for use on circuits protected by overcurrent protection rated 30 A orless) or 30 A to 35 A non-time-delay (for equipment rated for use oncircuits protected by overcurrent protection rated more than 30 A); theenclosure is not to be contacting ea
46、rth in any other location during thetesting, and d)ii) by making measurements to check that no accessible parts becomeshock-hazardous using the steady state limits for DVC-A in Table 6 andthe short-term limits of 7.3.2.3; and d).JULY 18, 2014 NATIONAL DIFFERENCES FOR UL UL 62109-1 7UL COPYRIGHTED MA
47、TERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4.4.4.1DV DR Modification by replacing the first paragraph with the following:Circuit analysis shall be performed to identify components (including insulation systems)whose failure would result in a fire or elect
48、ric shock hazard. The analysis shall include theeffect of short-circuit and open-circuit conditions of the component. Based on the analysis,faults shall be applied to relevant components in a manner that simulates the manner inwhich faults would occur in use. Components need only be faulted in a sin
49、gle mode(short-circuit or open-circuit), to represent the components predominant mode of failure.Components that can fail in either mode shall be tested for both fault conditions.4.4.4.5DV D1 Modification by deleting the following text from the third paragraph:“and if they exceed the maximum rated current of the circuit”4.4.4.6DV D1 Modification by deleting the following text from the third paragraph:“and if they exceed the maximum rated current of the port”4.6.3DV DE Modification by replacing the last two dashes with the following: 15 s for sources that
