1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1778 Uninterruptible Power SystemsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER
2、 REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Uninterruptible Power Systems, UL 1778 Fifth Edition, Dated June 13, 2014 Summary of Topics This revision of ANSI/UL 1778 is being issued to revise the UL effective date information. No changes in requirements are in
3、volved. As noted in the Commitment for Amendments statement located on the back side of the title page, UL, and CSA are committed to updating this harmonized standard jointly. However, the revision pages dated August 7, 2015 will not be jointly issued by UL and CSA as these revision pages only addre
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10、notice. AUGUST 7, 2015 UL 1778 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 7, 2015 UL 1778 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CSA G
11、roup CSA C22.2 No. 107.314 Third Edition Underwriters Laboratories Inc. UL 1778 Fifth Edition Uninterruptible Power Systems June 13, 2014 (Title Page Reprinted: August 7, 2015) ANSI/UL 1778-2014 Approved byUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMIS
12、SION FROM UL Commitment for Amendments This standard is issued jointly by the the Canadian Standards Association (operating as “CSA Group”), and Underwriters Laboratories Inc. (UL). Comments or proposals for revisions on any part of the standard may be submitted to CSA Group, or UL at anytime. Revis
13、ions to this standard will be made only after processing according to the standards development procedures of CSA Group, and UL. CSA Group and UL will issue revisions to this standard by means of a new edition or revised or additional pages bearing their date of issue. ISBN 978-1-55436-716-0 2014 CS
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17、red in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. This ANSI/UL Standard for Safety consists of the Fifth Edition. The most recent designation of ANSI/UL 1778 as an American National Standard (
18、ANSI) occurred on June 10, 2014. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page (front and back), or the Preface. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Propo
19、sal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. To purchase UL Standards, visit Comm 2000 at http:/m- or call toll-free 1-888-853-3503.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS Preface .
20、6 1 General 8 1.1 Scope .8 1.2 Denitions 10 1.3 General requirements 13 1.4 General conditions for tests .14 1.5 Components 14 1.6 Power interface .16 1.7 Markings and instructions 17 2 Protection from hazards 26 2.1 Protection from electric shock and energy hazards 26 2.6 Provisions for earthing an
21、d bonding .27 2.7 Overcurrent and earth fault protection in primary circuits .28 2.8 Safety interlocks 30 2.9 Electrical insulation 32 3 Wiring, connections, and supply .32 3.1 General 32 3.4 Disconnection from the mains supply 33 3.5 Interconnection of equipment .34 4 Physical requirements 34 4.1 S
22、tability 34 4.3 Design and construction 34 4.5 Thermal requirements 36 4.6 Openings in enclosures 37 5 Electrical requirements and simulated abnormal conditions .37 5.101 Short-circuit fault current withstand rating markings 37 5.2 Electric strength .38 5.3 Abnormal operating and fault conditions 38
23、 6 Connection to telecommunication networks .42 7 Connection to cable distribution systems 42 Annexes Annex AAA (normative) Additional component requirements AAA.1 Capacitor surge current test 44 AAA.2 Oil-lled capacitor fault test .44 AAA.3 Electrolytic capacitor fault test 44 AAA.4 Control devices
24、 .44 AAA.4.2 Overload (control devices) .45 AAA.4.3 Endurance (control devices) 46 AAA.5 Static transfer switches 46 AAA.5.1 General 46 AAA.5.2 Isolating means .47 AAA.5.3 Tests 47 AAA.6 Transfer switches .47 AAA.7 Load transfer .47 JUNE 13, 2014 CSA C22.2 NO. 107.3-14 UL 1778 3UL COPYRIGHTED MATERI
25、AL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AAA.8 Bus bars .48 AAA.8.13 Bus bar tests 51 Annex BBB (informative) Examples of NORMAL LOAD conditions BBB.1 General 52 Annex CCC (informative) Safety symbols and their meanings Annex DDD (normative) Harmonic dist
26、ortion test Annex EEE (normative) Earthing and bonding (see 2.6.) EEE.1 General requirements 62 EEE.2 Wiring terminals .63 Annex FFF (normative) BACKFEED PROTECTION test FFF.1 General 68 FFF.2 Pluggable type A UPS .68 FFF.3 Permanently connected UPS .68 FFF.4 Single fault conditions 68 FFF.5 Air gap
27、 requirements for mechanical disconnect .70 FFF.6 ELECTRONIC BACKFEED PROTECTION .71 Annex GGG (informative) Principles of BACKFEED PROTECTION GGG.1 General .72 GGG.2 Air gap requirements for mechanical disconnect 73 GGG.3 Fault testing 73 GGG.4 Relays 74 GGG.5 Electronic protection 74 GGG.6 Mechani
28、cal protection .74 GGG.7 Control circuitry .74 Annex HHH (normative) Ventilation of battery compartments Annex III (normative) Standards for components III.1 Component Standards .76 JUNE 13, 2014 CSA C22.2 NO. 107.3-14 UL 1778 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTR
29、IBUTION WITHOUT PERMISSION FROM UL Annex JJJ (normative) French translations and markings Annex LLL (informative) Examples of US and Canadian regulatory requirements Annex MMM (normative) Test and construction requirements for UPS with fault current ratings higher than those specied in Table NNN.5 M
30、MM.1 Short-circuit current .88 MMM.2 Maximum 100 000 ampere short-circuit current rating without short-circuit test .88 MMM.2.1 Scope 88 MMM.2.2 Construction .89 MMM.2.3 Performance .102 MMM.2.4 Marking 104 Annex NNN (normative) Short-circuit withstand rating NNN.1 Rating verication and marking 106
31、NNN.2 Short-time withstand current .106 NNN.2.1 General 106 NNN.2.2 Modes of operation 106 NNN.3 Test procedure 106 NNN.3.1 General application 106 NNN.3.2 Sample selection 110 NNN.3.3 Sample preparation 111 NNN.3.4 Line (input) connections 112 NNN.3.5 Load (output) connections 113 NNN.3.6 Short-cir
32、cuit test procedure .115 NNN.3.7 Test circuit calibration 116 NNN.3.8 Short-circuit test .117 NNN.4 Compliance criteria 119 NNN.5 Markings 120 NNN.5.1 UPS not requiring protection by a specic overcurrent device .120 NNN.5.2 UPS dependent on use of a specic overcurrent device 121 NNN.5.3 UPS dependen
33、t on use of a current-limiting device 121 Annex OOO Annex PPP (normative) Manufacturing and production tests PPP.1 Production-Line Dielectric Voltage-Withstand Test .125 PPP.2 Production-Line Grounding-Continuity Test .126 JUNE 13, 2014 CSA C22.2 NO. 107.3-14 UL 1778 5UL COPYRIGHTED MATERIAL NOT AUT
34、HORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Preface This is the harmonized CSA Group and UL Standard for Uninterruptible Power Systems (UPS). It is the third edition of CSA C22.2 No. 107.314 and the fth edition of UL 1778. This edition of CSA C22.2 No. 107.314 superse
35、des the previous edition published in 2005 and 2003. This edition of UL 1778 supersedes the previous editions published in 2005, 2003, 1994, and 1989. This harmonized Standard was prepared by CSA Group and Underwriters Laboratories Inc. (UL). The efforts and support of the National Electrical Manufa
36、cturers Association (NEMA) and Electro-Federation Canada (EFC) are gratefully acknowledged. The Standard is intended to be used in conjunction with the applicable requirements of CAN/CSA-C22.2 No. 60950-1-07 and UL 60950-1, second edition, which is referred to in this Standard as the Reference Docum
37、ent (RD). Compliance will be determined by the requirements located in CAN/CSA-C22.2 No. 60950-1-07 and UL 60950-1, second edition, with deviations presented in the third edition of CSA C22.2 No. 107.3 and the fth edition of UL 1778. The requirements in this document have been developed from existin
38、g UL and CSA Group requirements for UPS together with IEC 62040-1 (ed. 1.0). This standard is considered suitable for use for conformity assessment within the stated scope of the standard. This Standard was reviewed by the CSA Subcommittee on Uninterruptible Power Systems, under the jurisdiction of
39、the CSA Technical Committee on Industrial Products and the CSA Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the CSA Technical Committee. This Standard was processed and reviewed in accordance with the method of development, revision, and imple
40、mentation of UL Standards for safety. This Standard has been approved by the American National Standards Institute (ANSI) as an American National Standard. NOTE: Although the intended primary application of this Standard is stated in its scope, it is important to note that it remains the responsibil
41、ity of the users of the standard to judge its suitability for their particular purpose. Level of Harmonization This Standard is published as an equivalent standard for CSA Group and UL. An equivalent standard is a standard that is substantially the same in technical content, except as follows: Techn
42、ical national differences are allowed for codes and governmental regulations as well as those recognized as being in accordance with NAFTA Article 905, for example, because of fundamental climatic, geographical, technological, or infrastructural factors, scientic justication, or the level of protect
43、ion that the country considers appropriate. Presentation is word for word except for editorial changes. Interpretations The interpretation by the standards development organization (SDO) of an identical or equivalent standard is based on the literal text to determine compliance with the standard in
44、accordance with the procedural rules of the SDO. If more than one interpretation of the literal text has been identied, a revision is to be proposed as soon as possible to each of the SDOs to more accurately reect the intent. JUNE 13, 2014 CSA C22.2 NO. 107.3-14 UL 1778 6UL COPYRIGHTED MATERIAL NOT
45、AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CSA Group Effective Date The effective date for CSA Group will be announced through CSA Informs or CSA Group Certication Notice. UL Effective Date A UL effective date is one established by UL LLC and is not part of the AN
46、SI approved standard. AUGUST 7, 2015 CSA C22.2 NO. 107.3-14 UL 1778 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Uninterruptible Power Systems 1 General 1.1 Scope Replace this clause of the RD with the following: 1.1.1 Equipment covered
47、by this Standard This Standard applies to UNINTERRUPTIBLE POWER SYSTEMS (UPS). The primary function of the UPS for this Standard is to ensure continuity of an alternating power source. The UNINTERRUPTIBLE POWER SYSTEM may also serve to improve the quality of the power source by keeping it within spe
48、cied characteristics. This Standard is applicable to movable, stationary, xed, and built-in UPS for distribution systems up to 600 V a.c. This equipment is designed to be installed in accordance with the Canadian Electrical Code, Part I, CSA C22.1, or the National Electrical Code, ANSI/NFPA 70, and,
49、 unless otherwise identied, the Standard for the Protection of Electronic Computer Data-Processing Equipment, ANSI/NFPA 75. This Standard species requirements intended to ensure safety for the OPERATOR and, where specically stated, for SERVICE PERSONNEL. This Standard is intended to reduce the risk of re, electric shock, or injury to persons from installed equipment, both as a single unit or as a system of interconnected units, subject to installing, operat
