1、BRITISH STANDARD BS 7698-12: 1998 ISO 8528-12: 1997 Incorporating Amendment No. 1 Reciprocating internal combustion engine driven alternating current generating sets Part 12: Emergency power supply to safety services ICS 27.020; 29.160.40BS7698-12:1998 This British Standard, having been prepared und
2、er the directionof the Engineering SectorBoard, was published underthe authority of the Standards Board and comesintoeffect on 15February1998 BSI 04-2000 ISBN 0 580 29470 6 National foreword This British Standard reproduces verbatim ISO8528-12:1997and implements it as the UK national standard. The U
3、K participation in its preparation was entrusted to Technical Committee MCE/14, RIC engines, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the U
4、K interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publication
5、s referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions
6、 of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theISO title page, pa
7、ges ii to iv, pages 1 to 9 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date Comments 10414 May 1999 Front coverBS7
8、698-12:1998 BSI 04-2000 i Contents Page National foreword Inside front cover Foreword iii Text of ISO 8528-12 1ii blankBS7698-12:1998 ii BSI 04-2000 Contents Page Foreword iii 1 Scope 1 2 Normative references 1 3 Definitions 1 4 Symbols 2 5 Additional regulations and requirements 2 6 Classification
9、designation 2 6.1 General 2 6.2 Typical examples of classification 2 7 Generating set design 3 7.1 Criteria for determining the required power 3 7.2 Power determination 3 7.3 Operating limit values 3 8 Additional requirements 4 9 Controlgear and switchgear 5 9.1 Protection, measurement, monitoring a
10、nd control equipment for the generator 5 9.2 Engine measurement and monitoring equipment 5 9.3 Generating set measurement and monitoring equipment 5 9.4 Remote signals 5 10 Test mode 5 10.1 Test operation with synchronization to the mains supply 5 10.2 Test mode without mains synchronization 6 11 Te
11、sting 6 11.1 General 6 11.2 Installation tests 6 11.3 Periodic tests 7 12 Rating plate 7 13 Required documentation 7 14 Check list 7 Annex A (informative) Bibliography 9 Table 1 Classification by change-over time 2 Table 2 Examples 2 Table 3 Special requirements for examples given in Table 2 3 Table
12、 4 Design considerations for power generators 8 Descriptors: Motor generator sets, emergency electrical installations, electric power supply, specifications, performance.BS7698-12:1998 BSI 04-2000 iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of nati
13、onal standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Internat
14、ional organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical commit
15、tees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least75% of the member bodies casting a vote. International Standard ISO8528-12was prepared by Technical Committee ISO/TC70, Internal combustion engines. International Standard ISO85
16、28consists of the following parts, under the general title Reciprocating internal combustion engine driven alternating current generating sets: Part 1: Application, ratings and performance; Part 2: Engines; Part 3: Alternating current generators for generating sets; Part 4: Controlgear and switchgea
17、r; Part 5: Generating sets; Part 6: Test methods; Part 7: Technical declarations for specification and design; Part 8: Requirements and tests for low-power generating sets; Part 9: Measurement and evaluation of mechanical vibrations; Part 10: Measurement of airborne noise by the enveloping surface m
18、ethod; Part 11: Dynamic uninterruptible power supply systems; Part 12: Emergency power supply to safety services. Annex A of this part of ISO8528is for information only.iv blankBS7698-12:1998 BSI 04-2000 1 1 Scope This part of ISO 8528 applies to generating sets driven by reciprocating internal-comb
19、ustion (RIC) engines for emergency power supply to safety services. It applies, for example, to safety equipments in hospitals, high-rise buildings, public gathering places etc. This part of ISO 8528 establishes the special requirements for the performance, design and maintenance of power generators
20、 used in the applications referred to above and taking into account the provisions of ISO8528-1to ISO8528-6and ISO8528-10. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO8528. At the time of publicatio
21、n, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO8528are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of curren
22、tly valid International Standards. ISO 8528-1:1993, Reciprocating internal combustion engine driven alternating current generating sets Part 1: Application, ratings and performance. ISO 8528-2:1993, Reciprocating internal combustion engine driven alternating current generating sets Part 2: Engines.
23、ISO 8528-3:1993, Reciprocating internal combustion engine driven alternating current generating sets Part 3: Alternating current generators for generating sets. ISO 8528-4:1993, Reciprocating internal combustion engine driven alternating current generating sets Part 4: Controlgear and switchgear. IS
24、O 8528-5:1993, Reciprocating internal combustion engine driven alternating current generating sets Part 5: Generating sets. ISO 8528-6:1993, Reciprocating internal combustion engine driven alternating current generating sets Part 6: Test methods. IEC 34-1:1996, Rotating electrical machines Part1: Ra
25、ting and performance. IEC 285:1993, Alkaline secondary cells and batteries Sealed nickel-cadmium cylindrical rechargeable single cells. IEC 364-5-56:1980, Electrical installations of buildings Part 5: Selection and erection of electrical equipment Chapter 56: Safety services. IEC 364-7-710:, Electri
26、cal installations of buildings Part 7: Requirements for special installations or locations Section 710: Medical locations 1) . IEC 601-1:1988, Medical electrical equipment Part 1: General requirements for safety. IEC 622:1988, Sealed nickel-cadmium prismatic rechargeable single cells. IEC 623:1990,
27、Vented nickel-cadmium prismatic rechargeable single cells. IEC 896-1:1987, Stationary lead-acid batteries General requirements and methods of test Part1:Vented types. IEC 896-2:1995, Stationary lead-acid batteries General requirements and methods of test Part2:Vale-regulated types. 3 Definitions For
28、 the purposes of this part of ISO8528the following definitions and those in ISO 8528-1 to ISO8528-6 apply. 3.1 change-over time, t co time interval from the appearance of a malfunction of the normal electrical power supply system until the safety services are again connected to the emergency power s
29、upply; this connection to the safety services may be applied in several load steps 3.2 bridging time, t B minimum time for which the generating station must supply the consumers with electrical power under pre-determined operating conditions and which corresponds with the rated operating time as def
30、ined in IEC601-1 3.3 safety services equipment for the safety of persons which is installed and kept prepared in case of failure of the usual electrical power supply system 3.4 consumer power demand total of all intended demands of the connected consumers, taking into consideration the actual load s
31、teps 3.5 power demand for safety services required power demand to fulfil the safety service requirements 1) To be published.BS7698-12:1998 2 BSI 04-2000 4 Symbols 5 Additional regulations and requirements If special requirements or additional regulations are to be observed, they shall be stated by
32、the customer and agreed upon between manufacturer and customer. 6 Classification designation 6.1 General Classification of generating sets for safety services is based on performance class G2 as defined in ISO8528-1 and the required change-over time, t co , according to IEC 364-5-56 and Table 1. Tab
33、le 1 Classification by change-over time 6.2 Typical examples of classification Typical examples of classification as defined in Table 1 are given in Table 2. Table 2 Examples I 2 /I N Unbalanced load current ratio k U Total voltage harmonic content t B Bridging time t co Change-over time t U,de t U,
34、in Voltage recovery time f Steady-state frequency band Transient voltage deviation $f dyn Transient frequency deviation $f st Frequency droop $U st Steady-state voltage deviation Generating sets no break short break long break Change-over time 0 15 s Classification 1 2 3 4 U dyn U + dyn Classificati
35、on Typical examples 1 The mains voltage drops below the rated voltage by more than10%. After a change-over time of 0s the power for the consumer power demand for safety services shall beavailable. The design of the no-break generating sets depends on the required frequency and voltage deviations. 2
36、The mains voltage drops below the rated voltage by more than 10%. After a change-over time of 0,5s the power for the consumer power demand for safety services shall beavailable. The design of the short-break generation set depends on the required frequency and voltage deviations. 3 The mains voltage
37、 drops below the rated voltage by more than 10% fora period longer than0,5s. After a change-over time ofmax.15s, power for100% of the consumer power demand for safety services shall be available in steps. 4 The mains voltage drops below the rated voltage by more than10% fora period longer than0,5s.
38、After a change-over time ofmax.15s, power for 80% of the consumer power demand for safety services shall be available in two steps, and the power for100% of the consumer demand shall be available after an additional5s has passed.BS7698-12:1998 BSI 04-2000 3 7 Generating set design 7.1 Criteria for d
39、etermining the required power To ensure a reliable supply of electrical power by the generating set, the generating set manufacturer shall be informed of the power requirements of the installations to be supplied. The power requirements shall include short load peaks when switching in electrical ins
40、tallations (e.g.lifts, pumps, fans, lighting equipment and non-linear electrical installations). Where applicable, e.g.for reasons of redundancy, the use of several generating sets operating in parallel may be required. Since many modern RIC engines are turbocharged it will be necessary to arrange l
41、oad acceptance in several steps. For load acceptance the definitions and values laid down in ISO8528-5:1993, clause 9 and Figure 6 and Figure 7 apply, where the load acceptance capability of the generating set is shown to be dependent on the brake mean effective pressure of the RIC engine. If larger
42、 steps are used than those recommended in ISO 8528-5:1993, Figure 6 and Figure 7, either suitable additional measures shall be taken, or the generating set power rating, and where applicable the rotating mass of the flywheel, shall be increased. The information provided by the check list in clause14
43、 is suggested as necessary for designing the power generator. Essential equipment of emergency generating sets such as cooling system, fuel system including storage tank, lubrication system etc. shall be provided in order to ensure the operation of the generating set for the required time period. Th
44、e cooling system of the RIC engine shall be self-contained. NOTEThe application of spark ignition engines is under consideration for special requirements and for national specifications. 7.2 Power determination ISO 8528-1:1993, 13.1 and 13.3 applies for determining the power requirement. 7.3 Operati
45、ng limit values The operating limits shall at least meet the requirements of performance class G2 as in ISO8528-5:1993. Special requirements for the limit values are given in ISO8528-5. The transient operating limits generally apply as in ISO8528-5:1993, Table 3. Classifications given in Table 2 are
46、 listed in Table 3. Table 3 Special requirements for examples given in Table 2 Parameter Symbol Dimension Reference Classification 1 2 3 4 Frequency droop $f st % ISO 8528-5:1993, 5.1.1 AMC a AMC 5 4 Steady-state frequency band f % ISO 8528-5:1993, 5.1.4 AMC AMC 1,5 0,5 Transient frequency deviation
47、 $f dyn % ISO 8528-5:1993, 5.3.4 AMC AMC 10 10 Steady state voltage deviation $U st % ISO 8528-5:1993, 7.1.4 AMC AMC 2,5 1 Transient voltage deviation % % ISO 8528-5:1993, 7.3.3 AMC AMC + 20 15 + 10 10 Voltage recovery time t U,de t U,in s s ISO 8528-5:1993, 7.3.5 AMC AMC 4 4 Unbalanced load current
48、 ratio I 2 /I N b 1 ISO 8528-5:1993, 10.1 33 c 15 d 33 c 15 d 33 c 15 d 33 c 15 d Total voltage harmonic content k U % AMC AMC 5 e NOTEAll other values are given in ISO 8528-5. a AMC Agreement between manufacturer and customer. b See also definition in IEC34-1:1983, section22. c For generating sets
49、with ratings above300kVA. d For generating sets with ratings above 300kVA. e This applies also to the voltage between conductors and the neutral conductor under linear and symmetrical loading. U dyn U + dynBS7698-12:1998 4 BSI 04-2000 8 Additional requirements 8.1 A continuous power supply for monitoring and controlling voltages shall be backed up by batteries. Batteries for this application shall comply with the requirements of either IEC896-1, IEC896-2, IEC285, IE
