1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58ICS 47.020.70Ships and marine technology Electric rudder angle indicators BRITISH STANDARDBS ISO 20
2、673:2007BS ISO 20673:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 June 2007 BSI 2007ISBN 978 0 580 50877 6Amendments issued since publicationAmd. No. Date CommentsThis publication does not purport to include all the necessary provis
3、ions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard was published by BSI. It is the UK implementation of ISO 20673:2007.The UK participation in its preparation wa
4、s entrusted to Technical Committee EPL/80, Maritime navigation and radiocommunication equipment and systems.A list of organizations represented on this committee can be obtained on request to its secretary.Reference numberISO 20673:2007(E)INTERNATIONAL STANDARD ISO20673First edition2007-05-15Ships a
5、nd marine technology Electric rudder angle indicators Navires et technologie maritime Indicateurs de direction des gouvernails lectriques BS ISO 20673:2007ii iiiContents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Construction of the indicator system. 2 4.1 G
6、eneral. 2 4.2 Transmitter 2 4.3 Receiver (indicator)2 5 Performance requirements 3 5.1 General. 3 5.2 Calibration accuracy. 3 5.3 Damping efficiency. 3 5.4 Power supply fluctuation . 3 5.5 Insulation resistance and high voltage 4 6 Methods of testing and required test results. 4 6.1 Construction 4 6
7、.2 Environmental test 4 6.3 Calibration test 4 6.4 Damping test . 4 6.5 Power supply fluctuation test 4 7 Interface . 4 8 Marking and identification . 4 8.1 Identification 4 8.2 Compass safe distance 5 9 Information 5 Bibliography . 6 BS ISO 20673:2007iv Foreword ISO (the International Organization
8、for Standardization) is a worldwide federation of national 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 t
9、he right to be represented on that committee. International 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. Interna
10、tional Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publicatio
11、n as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights
12、. ISO 20673 was prepared by Technical Committee ISO/TC 8, Ships and marine technology, Subcommittee SC 6, Navigation. BS ISO 20673:20071Ships and marine technology Electric rudder angle indicators 1 Scope This International Standard specifies the construction, performance requirements, methods of te
13、sting and required test results for electric rudder angle indicators required to comply with clause 2.5.4, Regulation 19, chapter V, SOLAS 1974 (as amended, 2000). This International Standard is associated with IMO Resolution A.694 (17) and IEC 60945. Where a requirement in this International Standa
14、rd is different from IEC 60945, the requirement in this International Standard takes precedence. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest
15、edition of the referenced document (including any amendments) applies. IEC 60945, Marine navigation and radiocommunication equipment and systems General requirements Methods of testing and required test results IEC 61162-1, Maritime navigation and radiocommunication equipment and systems Digital int
16、erfaces Part 1 Single talker and multiple listeners IEC 61162-2, Maritime navigation and radiocommunication equipment and systems Digital interfaces Part 2 Single talker and multiple listeners, high-speed transmission 3 Terms and definitions For the purposes of this document, the following terms and
17、 definitions apply. 3.1 rudder angle indicator remote device that indicates ships rudder angle and direction NOTE An indicator system consists of a transmitter and a receiver (indicator). 3.2 analog type indicator indicator that shows the rudder angle in a continuous way, such as by means of an arro
18、w pointer and a graduated scale 3.3 digital type indicator indicator that shows the rudder angle in a discrete, alphanumeric way BS ISO 20673:20072 3.4 calibration accuracy difference between the angle of the receiver (indicator) shaft and the angle of the transmitter shaft 3.5 damping efficiency ti
19、me elapsed for the indicated angle to match the angle of the transmitter shaft 3.6 full scale from 0 to the greatest angle of port (or starboard) direction 4 Construction of the indicator system 4.1 General The construction shall generally comply with the following requirements. 4.1.1 The indicator
20、system enclosures shall be robust and constructed so as to facilitate adjustment and maintenance. 4.1.2 The indicator system shall be provided with an earthing terminal or shall be constructed so as to be capable of being connected to an electrical earth. 4.1.3 The indicator system shall include an
21、analog type indicator. A digital type indicator may additionally be used, if fitted. 4.2 Transmitter The transmitters shall comply with the following requirements. 4.2.1 The transmitter shall be driven by lever or belt, or other suitable means from the rudder head. 4.2.2 The transmitter shall be cap
22、able of being adjusted. 4.2.3 Where the transmitter drive includes pivot connections, they shall be designed so as not to be loosened by vibration. 4.3 Receiver (indicator) The indicator shall comply with the following requirements. 4.3.1 The indicator shall be connected to the transmitters and shal
23、l indicate rudder angle and direction. 4.3.2 The maximum angle indicated by the indicator shall be the same for both port and starboard directions and shall not be less than 40. Scale graduations shall be no less than 1. The graduation marks for every 5 shall be longer than those for each degree. In
24、 the case of wide angle indicators, with angles of 70 or greater, the graduations may be 2. In the case of a 2 scale, the graduation line shall be made longer than other scales for every 10 scale. 4.3.3 The pointer of the indicator shall be capable of being adjusted to zero. 4.3.4 The letters and gr
25、aduations for angles to port on the dial shall be clearly distinguishable from those for angles to starboard. BS ISO 20673:200734.3.5 All illumination and lighting of the indicator shall be adjustable down to zero, except the control of the dimmers which shall remain readable. 4.3.6 The illumination
26、 and lighting of the indicators shall be arranged so as not to obstruct an operators vision at night, and so as to make the scale, pointer and letters as equally visible as possible even in dim light or the dark. 5 Performance requirements 5.1 General The transmitter shall have sufficient capacity t
27、o satisfy the requirements specified in 5.2, 5.3 and 5.4 when all the connected indicators are operating simultaneously. The manufacturer should specify the capacity of connected indicators. 5.2 Calibration accuracy 5.2.1 When the shaft of the transmitter is gradually rotated from the zero position
28、to the maximum angle port and starboard, and the angles shown by the indicator are recorded every 5 of the rotation, the difference between the angles of the transmitter shaft and the corresponding value shown at the indicator shall be within 1,5 % of the maximum angle. 5.2.2 In equipment where ther
29、e is conversion into rudder scale, the minimum unit of angle shall be 0,1 and any value less than 0,1 shall be rounded up to 0,1 after conversion. 5.2.3 In cases of wider angle indication (such as 70), the angles shown by the indicator may be recorded at every 10. 5.3 Damping efficiency When a volta
30、ge is suddenly applied while the transmitter shaft is approximately at half of full-scale position and the indicator pointer is set to the zero position, the pointer shall come to reset to that position within 5 s or less. 5.4 Power supply fluctuation 5.4.1 When the power supply fluctuations specifi
31、ed in 5.4.3 are applied, the performance required by 5.1 and 5.2 shall be maintained. 5.4.2 After repeated makings and breakings, the designated performance shall be demonstrated without carrying out manual adjustments. 5.4.3 When the rated voltage and frequency are subjected to the combinations of
32、fluctuations, as given in Table 1, the designated performance shall be demonstrated. Table 1 Power supply fluctuation Voltage fluctuation 10 % Settled condition Frequency fluctuation 5 % Fluctuating period: 600 s Voltage fluctuation 20 % Transient condition Frequency fluctuation 10 % Fluctuating per
33、iod: 3 s BS ISO 20673:20074 5.5 Insulation resistance and high voltage When insulation resistance and high voltage tests are to be carried out, IEC 60092-504 may be applied. 6 Methods of testing and required test results 6.1 Construction The construction of the electric rudder angle indicators shall
34、 comply with the requirements specified in Clause 4. 6.2 Environmental test Unless otherwise stated in this International Standard, all the tests shall be carried out according to the requirements of IEC 60945. The manufacturer shall determine which components of electric rudder angle indicators wil
35、l be protected or exposed, as defined in IEC 60945. 6.3 Calibration test The calibration test shall be carried out in accordance with 5.2 and shall satisfy the requirements specified therein. 6.4 Damping test The damping test shall be carried out in accordance with 5.3 and shall satisfy the requirem
36、ents specified therein. 6.5 Power supply fluctuation test The power supply fluctuation test shall be carried out in accordance with 5.4 and shall satisfy the requirements specified therein. 7 Interface When the indicator system provides an interface facility, it shall meet the requirements laid down
37、 in IEC 61162-1 and IEC 61162-2. 8 Marking and identification 8.1 Identification Each unit of the indicator system shall be marked with the following: identification of the manufacturer; equipment type number or model identification number under which it was type tested; serial number of the unit. B
38、S ISO 20673:200758.2 Compass safe distance Each unit shall be marked with the minimum safe distance from a magnetic compass (for bridge installation). The safe distance shall be measured in accordance with IEC 60945. 9 Information The manufacturer shall provide adequate equipment documentation to en
39、able competent members of a ships crew to operate and maintain the equipment efficiently. BS ISO 20673:20076 Bibliography 1 ISO 8468, Ships and marine technology Ships bridge layout and associated equipment Requirements and guidelines 2 IEC 60092-504, Electrical installations in ships Part 504: Spec
40、ial features Control and instrumentation 3 International Convention for the Safety of Life at Sea (SOLAS), 1974 (amended) 4 IMO Resolution A.694(17), General requirements for shipborne radio equipment forming part of the global maritime distress and safety system (GMDSS) and for electronic navigatio
41、nal aids BS ISO 20673:2007blankBS ISO BSI389 Chiswick High RoadLondonW4 4AL20673:2007BSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by
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