FprEN IEC 62040-3:2021

Uninterruptible power systems (UPS) - Part 3: Method of specifying the performance and test requirements

This part of IEC 62040 establishes the performance and test requirements applied to movable, stationary and fixed electronic uninterruptible power systems (UPS) that - are supplied from AC voltage not exceeding 1 000 V, - deliver AC output voltage not exceeding 1 000 V, - incorporate an energy storage device not exceeding 1 500 V DC, and - have a primary function to ensure continuity of load power. This document specifies performance and test requirements of a complete UPS and, where applicable, of individual UPS functional units. Requirements for the individual UPS functional units found in IEC publications listed in the Bibliography apply so far that they are not in contradiction with this document. UPS are developed for a wide range of power, from less than hundred watts to several megawatts, to meet requirements for availability and quality of power to a variety of loads. Refer to Annex A and Annex B for information on typical UPS configurations and topologies. This document also includes UPS performance and test requirements related to UPS switches that interact with UPS functional units to maintain continuity of load power. This document does not cover - conventional AC and DC distribution boards and their associated switches, - stand-alone static transfer systems covered by IEC 62310-3, - rotary UPS covered by IEC 88528-11, and - DC UPS covered by IEC 62040-5-3. NOTE 1 This document recognises that continuity of load power to information technology (IT) equipment represents a major UPS application. The UPS output characteristics specified in this document are therefore also aimed at ensuring compatibility with the requirements of IT equipment. This, subject any limitation stated in the manufacturer’s declaration, includes requirements for steady state and transient voltage variation as well as for the supply of both linear and non-linear load characteristics of IT equipment. NOTE 2 Test loads specified in this document simulate both linear and non-linear load characteristics. Their use permits verification of the performance declared by the manufacturer while minimising complexity and energy consumption during the tests. NOTE 3 This document is aimed at 50 Hz and 60 Hz applications but does not exclude other frequency applications within the domain of IEC 60196. This is subject to an agreement between manufacturer and purchaser with respect to any particular requirements arising.

Unterbrechungsfreie Stromversorgungssysteme (USV) - Teil 3: Methoden zum Festlegen der Leistungs- und Prüfungsanforderungen

Alimentations sans interruption (ASI) - Partie 3: Méthode de spécification des performances et exigences d'essai

La CEI 62040-3:2011 s'applique aux systèmes d'alimentation sans interruption (ASI) électroniques mobiles, immobiles et fixes, qui délivrent une tension de sortie alternative à fréquence fixe mono- ou triphasée ne dépassant pas 1 000 V en courant alternatif et qui possèdent un moyen d'accumulation d'énergie généralement connecté via une liaison à courant continu. La présente norme vise à spécifier les performances et les exigences d'essai d'une ASI complète et non des unités fonctionnelles d'ASI individuelles. Les unités fonctionnelles d'ASI individuelles sont traitées dans des publications CEI auxquelles il est fait référence dans la bibliographie, lesquelles s'appliquent dans la mesure où elles ne sont pas en contradiction avec la présente norme. La fonction essentielle de l'alimentation sans interruption (ASI) couverte par la présente norme est d'assurer la permanence d'une source d'alimentation alternative. L'alimentation sans interruption peut aussi servir à améliorer la qualité de la source d'alimentation en la maintenant dans les limites des caractéristiques spécifiées. Toutes sortes d'alimentations sans interruption ont été développées pour satisfaire aux exigences par rapport à la permanence et à la qualité de l'alimentation de différents types de charges dans une large gamme de puissance de moins de cent watts à plusieurs mégawatts. Se reporter aux Annexes A et B pour avoir des informations sur les configurations et topologies types des ASI. Cette norme concerne également les essais et performances d'ASI quand des interrupteurs de puissance font partie intégrante d'une ASI et sont associés à sa sortie. Elle inclut les interrupteurs, les interrupteurs de bypass, les interrupteurs d'isolement et les interrupteurs de liaison. Ces interrupteurs réagissent avec d'autres unités fonctionnelles de l'ASI pour maintenir la continuité de l'alimentation de la charge. La présente norme ne couvre pas: - les tableaux de distribution conventionnels à entrée et sortie alternatives ou les tableaux en continu et leurs interrupteurs associés (par exemple les interrupteurs pour batteries, pour la sortie du redresseur ou pour l'entrée de l'onduleur); - les systèmes de transfert statique autonomes couverts par la CEI 62310-3; - les systèmes dont la tension de sortie est dérivée d'une machine tournante. NOTE 1 Cette norme reconnaît que la disponibilité de l'alimentation pour les matériels de traitement de l'information (IT) représente une application majeure des ASI. Les caractéristiques de sortie de l'ASI spécifiées dans la présente norme ont donc également pour but de garantir la compatibilité avec les exigences des matériels d'IT. Celle-ci, soumise à toute limitation indiquée dans la déclaration du fabricant, comporte des exigences relatives aux variations de tension en régime établi et transitoire ainsi qu'à l'alimentation des caractéristiques de charge à la fois linéaires et non linéaires des matériels d'IT. NOTE 2 Les charges d'essai spécifiées dans la présente norme simulent les caractéristiques de charge à la fois linéaires et non linéaires. Leur usage est prescrit avec pour objectif de vérifier la conception et la performance déclarées par le fabricant, ainsi que de limiter toute complexité et consommation d'énergie pendant les essais. NOTE 3 La présente norme vise les applications à 50 Hz et à 60 Hz mais n'exclut pas les applications à d'autres fréquences dans le domaine de la CEI 60196. Cela est soumis à un accord entre le fabricant et l'achete

Sistemi z neprekinjenim napajanjem (UPS) - 3. del: Metoda za določanje lastnosti in preskusnih zahtev

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN IEC 62040-3:2020
01-april-2020
Sistemi z neprekinjenim napajanjem (UPS) - 3. del: Metoda za določanje lastnosti
in preskusnih zahtev

Uninterruptible power systems (UPS) - Part 3: Method of specifying the performance and

test requirements
Unterbrechungsfreie Stromversorgungssysteme (USV) - Teil 3: Methoden zum
Festlegen der Leistungs- und Prüfungsanforderungen
Alimentations sans interruption (ASI) - Partie 3: Méthode de spécification des
performances et exigences d'essais
Ta slovenski standard je istoveten z: prEN IEC 62040-3:2020
ICS:
29.200 Usmerniki. Pretvorniki. Rectifiers. Convertors.
Stabilizirano električno Stabilized power supply
napajanje
oSIST prEN IEC 62040-3:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN IEC 62040-3:2020
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oSIST prEN IEC 62040-3:2020
22H/254/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62040-3 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2020-01-31 2020-04-24
SUPERSEDES DOCUMENTS:
22H/245/CD,22H/253/CC
IEC SC 22H : UNINTERRUPTIBLE POWER SYSTEMS (UPS)
SECRETARIAT: SECRETARY:
France Mr Eric Brun
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
Other TC/SCs are requested to indicate their interest, if any, in
this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY

SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING

Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.

This document is still under study and subject to change. It should not be used for reference purposes.

Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which

they are aware and to provide supporting documentation.
TITLE:

Uninterruptible power systems (UPS) - Part 3: Method of specifying the performance and test

requirements
PROPOSED STABILITY DATE: 2023
NOTE FROM TC/SC OFFICERS:

Due to the next MT 62040-3 meeting scheduled from 20-22 April 2020, NCs are requested to submit early

comments by 2020-04-03. Thank you.

Copyright © 2019 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download

this electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee

positions. You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose

without permission in writing from IEC.
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oSIST prEN IEC 62040-3:2020
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3 CONTENTS

4 FOREWORD ........................................................................................................................... 4

5 1 Scope ............................................................................................................................... 6

6 2 Normative references ....................................................................................................... 7

7 3 Terms and definitions ....................................................................................................... 8

8 General ................................................................................................................... 8

9 Systems and components ...................................................................................... 10

10 Performance of systems and components ............................................................. 13

11 Equipment mobility ................................................................................................ 15

12 Specified values .................................................................................................... 16

13 4 Environmental conditions ................................................................................................ 22

14 Introduction - Test environment ............................................................................. 22

15 Normal conditions ................................................................................................. 22

16 Unusual conditions ................................................................................................ 23

17 5 Electrical conditions, performance and declared values .................................................. 24

18 General ................................................................................................................. 24

19 UPS input specification ......................................................................................... 25

20 UPS output specification ....................................................................................... 27

21 Energy storage device specification ...................................................................... 33

22 UPS switch specification ....................................................................................... 35

23 Signal, control and communication ports ............................................................... 35

24 6 UPS tests ....................................................................................................................... 35

25 Summary ............................................................................................................... 35

26 Routine tests ......................................................................................................... 38

27 Site tests ............................................................................................................... 40

28 Type tests - Electrical ............................................................................................ 40

29 Type tests - Environmental .................................................................................... 50

30 UPS functional unit tests (where not tested as a complete UPS) ........................... 53

31 Annex A (informative) Configurations - Uninterruptible power system (UPS) ......................... 55

32 A.1 General ................................................................................................................. 55

33 A.2 Single output bus UPS .......................................................................................... 55

34 A.3 Parallel UPS .......................................................................................................... 56

35 A.4 Dual bus UPS ........................................................................................................ 59

36 Annex B (informative) Topologies – Uninterruptible power system (UPS) ............................. 61

37 B.1 General ................................................................................................................. 61

38 B.2 Double conversion topology .................................................................................. 61

39 B.3 Line-interactive topology ....................................................................................... 62

40 B.4 Standby topology................................................................................................... 62

41 Annex C (informative) Switch applications – Uninterruptible power systems (UPS) .............. 64

42 C.1 General ................................................................................................................. 64

43 C.2 Transfer switches, bypass transfer switches .......................................................... 64

44 C.3 Maintenance bypass switches ............................................................................... 64

45 Annex D (informative) Purchaser specification guidelines .................................................... 66

46 D.1 General ................................................................................................................. 66

47 D.2 Load to be supplied by the UPS ............................................................................ 66

48 D.3 Energy storage device (battery – where applicable) ............................................... 67

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49 D.4 Physical and environmental requirements.............................................................. 67

50 D.5 UPS Technical data sheet – Manufacturer's declaration ........................................ 68

51 Annex E (normative) Reference non-linear load ................................................................... 73

52 E.1 General ................................................................................................................. 73

53 E.2 Apparent power rating of the reference non-linear load ......................................... 73

54 E.3 Circuit design ........................................................................................................ 73

55 E.4 Adjustment ............................................................................................................ 74

56 Annex F (informative) Multiple normal mode UPS - Guidance for testing ............................. 75

57 F.1 General ................................................................................................................. 75

58 F.2 UPS presenting automatic change of classification ................................................ 75

59 Annex G (normative) AC input power failure – Test method ................................................. 76

60 G.1 General ................................................................................................................. 76

61 G.2 Test G.1 – High impedance AC input power failure ................................................ 76

62 G.3 Test G.2 – Low impedance AC input power failure ................................................. 76

63 Annex H (informative) Dynamic output performance – Measurement techniques .................. 77

64 H.1 General ................................................................................................................. 77

65 H.2 Validation method for RMS measurements ............................................................ 77

66 H.3 Validation method for instantaneous measurements .............................................. 77

67 H.4 Example ................................................................................................................ 78

68 Annex I (normative) UPS Efficiency values .......................................................................... 79

69 I.1 General ................................................................................................................. 79

70 I.2 Equipment covered................................................................................................ 79

71 I.3 Minimum weighted UPS efficiency ......................................................................... 79

72 Annex J (normative) UPS efficiency and no-load losses - Methods of measurement ............ 81

73 J.1 General ................................................................................................................. 81

74 J.2 Measurement conditions ........................................................................................ 81

75 J.3 Measurement method ............................................................................................ 82

76 J.4 Test report ............................................................................................................ 83

77 Annex K (informative) UPS availability .................................................................................. 85

78 K.1 General ................................................................................................................. 85

79 K.2 Downstream distribution failures in the AC output of UPS ...................................... 85

80 K.3 Reliability integrity levels ....................................................................................... 85

81 K.4 Availability calculation ........................................................................................... 86

82 K.5 Industry practice .................................................................................................... 87

83 Bibliography ........................................................................................................................ 88

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oSIST prEN IEC 62040-3:2020
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87 INTERNATIONAL ELECTROTECHNICAL COMMISSION
88 ____________
90 UNINTERRUPTIBLE POWER SYSTEMS (UPS) –
92 Part 3: Method of specifying the performance and test requirements
93 FOREWORD

94 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

95 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

96 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

97 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

98 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their

99 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

100 may participate in this preparatory work. International, governmental and non-governmental organizations liaising

101 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

102 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

103 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

104 consensus of opinion on the relevant subjects since each technical committee has representation from all

105 interested IEC National Committees.

106 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

107 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

108 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

109 misinterpretation by any end user.

110 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

111 transparently to the maximum extent possible in their national and regional publications. Any divergence between

112 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

113 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

114 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

115 services carried out by independent certification bodies.

116 6) All users should ensure that they have the latest edition of this publication.

117 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

118 members of its technical committees and IEC National Committees for any personal injury, property damage or

119 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

120 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

121 Publications.

122 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

123 indispensable for the correct application of this publication.

124 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

125 rights. IEC shall not be held responsible for identifying any or all such patent rights.

126 International Standard IEC 62040-3 was prepared by subcommittee 22H: Uninterruptible power

127 systems (UPS) of IEC technical committee 22: Power electronic systems and equipment.

128 This third edition cancels and replaces second edition published in 2011 and constitutes a

129 technical revision. The significant technical changes are:
130 − Environmental conditions aligned with IEC 62040-1 Ed2:2017 (UPS safety
131 requirements);

132 − Compliance requirements included in all sub-clauses referenced in Table 5 UPS

133 test schedule;
134 − Non-linear step load removed from 6.4 Type tests in consistency with

135 requirements for switch mode power supplies incorporating inrush current controls.

136 This resulted in the performance classification coding being shortened from 8 to 7

137 characters. See 5.3.4;
138 − Free-fall test aligned with ISO 4180. See 6.5.1.3;
139 − Multiple normal mode UPS performance classification introduced;
140
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141 − Non-linear load requirements relaxed in Annex E in consistency with requirements

142 for switch mode power supplies complying with the applicable limits for harmonic

143 current in IEC 61000-3-2 and IEC 61000-3-12; and
144 − Minimum UPS efficiency values referenced in Annex I became normative and

145 based on active output power rating and utilisation of weighting factors rather than

146 on allowances related to isolation transformers, input harmonic current filtering and

147 to input voltages.
148
149 The text of this standard is based on the following documents:
FDIS Report on voting
XX/XX/FDIS XX/XX/RVD
150

151 Full information on the voting for the approval of this standard can be found in the report on

152 voting indicated in the above table.

153 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

154 In this standard, the following print types are used:
155 – requirements proper and normative annexes: in roman type;
156 – compliance statements and test specifications: in italic type;
157 – notes and other informative matter: in smaller roman type;
158 – normative conditions within tables: in smaller roman type;
159 – terms that are defined in Clause 3: bold.

160 A list of all parts of the IEC 62040 series, under the general title: Uninterruptible power systems

161 (UPS) can be found on the IEC website.

162 The committee has decided that the contents of this publication will remain unchanged until the

163 stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to

164 the specific publication. At this date, the publication will be
165 • reconfirmed,
166 • withdrawn,
167 • replaced by a revised edition, or
168 • amended.
169
170
171
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oSIST prEN IEC 62040-3:2020
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172 UNINTERRUPTIBLE POWER SYSTEMS (UPS)
173
174 Part 3: Method of specifying the performance and test requirements
175 1 Scope

176 This part of IEC 62040 establishes the performance and test requirements applied to movable,

177 stationary and fixed electronic uninterruptible power systems (UPS) that
178
179 − are supplied from AC voltage not exceeding 1 000 V;
180 − deliver AC output voltage not exceeding 1 000 V;
181 − incorporate an energy storage device not exceeding 1 500 V DC; and
182 − have a primary function to ensure continuity of load power.
183

184 This document specifies performance and test requirements of a complete UPS and, where applicable,

185 of individual UPS functional units. Requirements for the individual UPS functional units found in IEC

186 publications listed in the bibliography apply so far that they are not in contradiction with this document.

187 UPS are developed for a wide range of power, from less than hundred watts to several

188 megawatts, to meet requirements for availability and quality of power to a variety of loads.

189 Refer to Annexes A and B for information on typical UPS configurations and topologies.

190 This document also includes UPS performance and test requirements related to UPS switches that

191 interact with other functional units of the UPS to maintain continuity of load power.

192 This standard does not cover
193 – conventional AC and DC distribution boards and their associated switches;
194 – stand-alone static transfer systems covered by IEC 62310-3;
195 – rotary UPS covered by IEC 88528-11; and;
196 – DC UPS covered by IEC 62040-5-3.

197 NOTE 1 This standard recognises that continuity of load power to information technology (IT) equipment

198 represents a major UPS application. The UPS output characteristics specified in this standard are therefore also

199 aimed at ensuring compatibility with the requirements of IT equipment. This, subject any limitation stated in the

200 manufacturer’s declaration, includes requirements for steady state and transient voltage variation as well as for the

201 supply of both linear and non-linear load characteristics of IT equipment.

202 NOTE 2 Test loads specified in this standard simulate both linear and non-linear load characteristics. Their use

203 is prescribed with the objective of verifying the performance declared by the manufacturer, and of minimising any

204 complexity and energy consumption during the tests.

205 NOTE 3 This standard is aimed at 50 Hz and 60 Hz applications but does not exclude other frequency applications

206 within the domain of IEC 60196. This is subject to an agreement between manufacturer and purchaser with respect

207 to any particular requirements arising.
208
209
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210 2 Normative references

211 The following referenced documents are indispensable for the application of this document. For

212 dated references, only the edition cited applies. For undated references, the latest edition of

213 the referenced document (including any amendments) applies.
214 IEC 60038, IEC standard voltages
215 IEC 60068-2-1, Environmental testing - Part 2-1: Tests - Test A: Cold
216 IEC 60068-2-2, Environmental testing - Part 2-2: Tests - Test B: Dry heat

217 IEC 60068-2-27, Environmental testing - Part 2-27: Tests - Test Ea and guidance: Shock

218 IEC 60068-2-31:2008, Environmental testing - Part 2-31: Tests - Test Ec: Rough handling

219 shocks, primarily for equipment-type specimens

220 IEC 60068-2-78, Environmental testing - Part 2-78: Tests - Test Cab: Damp heat, steady state

221 IEC 60146-1-1:2009, Semiconductor converters - General requirements and line-commutated

222 converters - Part 1-1: Specification of basic requirements

223 IEC 60146-2:1999, Semiconductor converters - Part 2: Self-commutated semiconductor

224 converters including direct DC converters

225 IEC 60364-1, Low-voltage electrical installations - Part 1: Fundamental principles, assessment

226 of general characteristics, definitions

227 IEC 60364-5-52, Low-voltage electrical installations - Part 5-52: Selection and erection of

228 electrical equipment - Wiring systems

229 IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems - Part 1:

230 Principles, requirements and tests

231 IEC TR 60721-4-3:2001+AMD1:2003, Classification of environmental conditions - Part 4-3:

232 Guidance for the correlation and transformation of environmental condition classes of IEC

233 60721-3 to the environmental tests of IEC 60068 - Stationary use at weather protected locations

234 IEC 61000-2-2:2002+AMD1:2017+AMD2:2018, Electromagnetic compatibility (EMC) - Part 2-2:

235 Environment - Compatibility levels for low-frequency conducted disturbances and signaling in

236 public low-voltage power supply systems

237 IEC 61000-3-2, Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for harmonic

238 current emissions (equipment input current ≤ 16 A per phase)

239 IEC/TS 61000-3-4, Electromagnetic compatibility (EMC) - Part 3-4: Limits - Limitation of

240 emission of harmonic currents in low-voltage power supply systems for equipment with rated

241 current greater than 16 A

242 IEC 61000-3-12, Electromagnetic compatibility (EMC) - Part 3-12: Limits - Limits for harmonic

243 currents produced by equipment connected to public low-voltage systems with input current >

244 16 A and ≤ 75 A per phase

245 IEC 61000-4-30, Electromagnetic compatibility (EMC) - Part 4-30: Testing and measurement

246 techniques - Power quality measurement methods

247 IEC 62040-1:2017, Uninterruptible power systems (UPS) - Part 1: Safety requirements

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248 IEC 62040-2:2016, Uninterruptible power systems (UPS) - Part 2: Electromagnetic compatibility

249 (EMC) requirements

250 ISO 3744:2010, Acoustics - Determination of sound power levels and sound energy levels of

251 noise sources using sound pressure - Engineering methods for an essentially free field over a

252 reflecting plane

253 ISO 3746:2010, Acoustics - Determination of sound power levels and sound energy levels of

254 noise sources using sound pressure - Survey method using an enveloping measurement

255 surface over a reflecting plane

256 ISO 4180, Packaging - Complete, filled transport packages - General rules for the compilation

257 of performance test schedules
258 3 Terms and definitions
259 General

260 For the purposes of this document, the following terms and definitions apply.

261 NOTE 1 to entry: In this standard, IEC 60050 definitions are referenced wherever possible, particularly those of

262 IEC 60050(551). When an existing IEC 60050 definition needs amplification or additional information, this is indicated

263 by adding the word “modified” after the IEC 60050 reference.
264 Table 1 provides an alphabetical cross-reference listing of terms.
265 Table 1 – Alphabetical list of terms
Term Term Term
Term number Term number Term number
AC input power 3.2.8 AC input power failure 3.3.1 active power 3.5.30
asynchronous
ambient temperature 3.5.56 apparent power 3.5.31 transfer 3.3.14
automatic (control) 3.3.11 battery 3.2.19 battery ripple current 3.3.18
bypass mode (of
bidirectional converter 3.2.16 bypass 3.2.29 UPS operation) 3.3.9
continuity of load
charger 3.2.21 charger current limit 3.5.29 power 3.3.5
(electronic) (power)

converter or convertor 3.2.12 current limit (control) 3.5.27 cut-off voltage 3.5.55

displacement power
DC link 3.2.17 deviation 3.5.5 3.5.41
factor
electronic (power) energy storage
switch 3.2.25 (UPS) efficiency 3.5.57 device 3.2.18
flywheel energy storage
fixed UPS 3.4.3 system 3.2.22 frequency variation 3.5.46
(UPS) functional unit
3.2.13 harmonic components 3.5.51 harmonic content 3.5.52
high impedance individual harmonic
failure 3.3.3 hybrid (power) switch 3.2.27 distortion 3.5.50
(UPS rated) input (UPS rated) input
frequency tolerance (UPS rated) input voltage tolerance
band 3.5.47 power factor 3.5.42 band 3.5.14
instantaneous voltage
inrush current 3.5.25 3.5.11 (UPS) inverter 3.2.15
variation
inverter current limit 3.5.28 light load 3.2.38 linear load 3.2.33
load 3.2.31 load power factor 3.5.43 load sharing 3.5.37
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Term Term Term
Term number Term number Term number
maintenance bypass
low impedance failure 3.3.4 mains (supply) 3.2.9 switch 3.2.28
(UPS) maximum input mechanical (power)
manual (control) 3.3.10 current 3.5.24 switch 3.2.26
multiple normal mode
movable UPS 3.4.1 UPS 3.3.7 nominal (value) 3.5.3
non-sinusoidal output normal mode (of
non-linear load 3.2.34 voltage 3.5.18 UPS operation) 3.3.6
output frequency
output current 3.5.26 tolerance band 3.5.48 output voltage 3.5.15
output voltage parallel redundant
tolerance band 3.5.16 overload capacity 3.5.38 UPS 3.2.7
periodic output voltage
parallel UPS 3.2.4 variation (modulation) 3.5.22 phase angle 3.5.39
polyphase (circuit) 3.2.10 port 3.2.11 power factor 3.5.40
rated apparent power
of the equipment
Sequ 3.5.32 rated current 3.5.13 rated frequency 3.5.44
(UPS) rated input
rated frequency range 3.5.45 current 3.5.23 rated load 3.2.32
rated output active rated output apparent
power 3.5.36 power 3.5.35 rated value 3.5.1
rated voltage 3.5.12 rating 3.5.2 recovery time 3.5.10
reference non-linear
(UPS) rectifier 3.2.14 redundant UPS 3.2.5 load 3.2.35
reliability integrity level
reference test load 3.2.36 RIL 3.3.19 restored energy time 3.5.54
RMS (value) 3.5.7 RMS voltage variation 3.5.8 routine test 3.3.16
service life (of a short-circuit power
secondary battery 3.2.20 battery) 3.3.17 Ssc 3.5.33
short-circuit ratio sinusoidal output
Rsce 3.5.34 single UPS 3.2.3 voltage 3.5.17
standby redundant
UPS 3.2.6 static bypass switch 3.2.30 stationary UPS 3.4.2
stored energy mode
steady state 3.5.9 step load 3.2.37 (of UPS operation) 3.3.8
stored
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