1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21977-2 SANS 8849:2008 Edition 1 ISO 8849:2003 Edition 2SOUTH AFRICAN NATIONAL STANDARD Small craft Electrically operated direct-current b
4、ilge pumps This national standard is the identical implementation of ISO 8849:2003, and is adopted with the permission of the International Organization for Standardization. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: +27 12 428 7911 Fax: +27
5、 12 344 1568 www.sabs.co.za SABS This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 8849:2008 Edition 1 ISO 8849:2003 Edition 2 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Comm
6、ittee SABS TC 188, Small craft, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in September 2008. This standard may only be used and printed by approved subscription and freemailing clients of the SA
7、BS. Reference number ISO 8849:2003(E) ISO 2003INTERNATIONAL STANDARD ISO 8849 Second edition 2003-10-01 Small craft Electrically operated direct- current bilge pumps Petits navires Pompes de cale moteur lectrique en courant continu SANS 8849:2008This standard may only be used and printed by approved
8、 subscription and freemailing clients of the SABS.ISO 8849:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed
9、 on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products
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11、e inform the Central Secretariat at the address given below. ISO 2003 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing
12、from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2003 All rights reservedSANS 8849:2008
13、This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 8849:2003(E) ISO 2003 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The w
14、ork 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. International organizations, governmental and non-govern
15、mental, 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. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The
16、 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. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
17、 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. ISO 8849 was prepared by Technical Committee ISO/TC 188, Small craft. This second edition cancels an
18、d replaces the first edition (ISO 8849:1990), which has been technically revised. SANS 8849:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 8849:2008This standard may only be used and printed by approved subscription and freemailing cl
19、ients of the SABS.INTERNATIONAL STANDARD ISO 8849:2003(E) ISO 2003 All rights reserved 1Small craft Electrically operated direct-current bilge pumps 1 Scope This International Standard specifies requirements for electrically operated direct-current bilge pumps intended for use in removing bilge wate
20、r from small craft with a hull length up to 24 m. It applies to electrically operated bilge pumps rated for less than 50 V direct current (d.c.). This International Standard does not cover pumps intended for damage control. 2 Normative references The following referenced documents are indispensable
21、for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 8846:1990, Small craft Electrical devices Protection against ignition of surrounding flammable gas
22、es. ISO 10133:2000, Small craft Electrical systems Extra-low-voltage d.c. installations IEC 60529:2001, Degrees of protection provided by enclosures (IP Code) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 automatic pump pump that is equippe
23、d with a sensing means that activates and deactivates the pump at predetermined liquid levels 3.2 ignition-protected device device that complies with the requirements of ISO 8846 3.3 nominal voltages voltages that are commonly used on small craft with direct current, such as 6 V, 12 V and 24 V 3.4 n
24、on-submersible pump pump designed to be operated above water 3.5 submersible pump pump designed to be operated completely immersed in water 3.6 design voltage 113 % of nominal voltage SANS 8849:2008This standard may only be used and printed by approved subscription and freemailing clients of the SAB
25、S.ISO 8849:2003(E) 2 ISO 2003 All rights reserved4 General requirements 4.1 Bilge pumps shall be designed to operate continuously at 87,5 % of nominal voltage, i.e. 10,5 V for a 12 V system, 21 V for a 24 V system, up to their design voltage at the point within the range of performance recommended f
26、or the pump that results in the highest power consumption 4.2 Bilge pumps and devices used to convert bilge pumps to automatic operation shall be ignition-protected in accordance with the requirements of ISO 8846 and shall meet the electrical requirements of ISO 10133. 4.3 Bilge pumps shall be rated
27、 in litres of water flow per minute or per hour at nominal voltage, at static pressures of 0 kPa, 10 kPa and 20 kPa, i.e. 0 m, 1 m and 2 m output lift, with 1,5 times the lift in a smooth- bore hose length of an inside diameter equal to the pump-outlet outside diameter fixed to the pump-outlet. The
28、pump rating and capacities shall be stated in the installation and operating instructions provided with the pump. The pump rating shall include the maximum output pressure and lift at which the pump ceases operation, i.e. the discharge of water. 4.4 Bilge pumps shall be provided with means of fasten
29、ing them to the craft independently and securely. 4.5 Materials used in the construction of bilge pumps, which can be expected to come in contact with sea water, shall be selected or coated to be resistant to corrosion, galvanically compatible, and resistant to deterioration by bilge-cleaning agents
30、 and intermittent exposure to petrol (gasoline), oil and diesel fuel. 4.6 Submersible pumps shall be provided with a strainer or other means of preventing debris entering the pump inlet. Inlet strainers and screens shall be designed such that they can be cleaned. 4.7 Installation and operating instr
31、uctions shall be available for each bilge pump. An electrical diagram shall be provided. It shall identify each conductor and shall include the proper location of the control switch(es) in the circuit and the bonding connection, if applicable. The recommended overcurrent protection for non- integral
32、ly protected bilge pumps shall be stated. Installation instructions shall require remote-mounted pumps to be fitted with a strainer or other means of preventing debris from entering the pump inlet. 4.8 Centrifugal and axial flow pumps shall be capable of operating dry at their design voltage for at
33、least 7 h without creating a fire hazard. Alternatively, a means integral with the pumps shall be provided to shut the pump off automatically to prevent a fire hazard. 4.9 Positive or semi-positive displacement pumps, i.e. those in which the impeller may be in continuous contact with the housing whe
34、n operating dry, shall be capable of operating dry for at least 5 min without damage to the impeller or housing and for at least 1 h without creating a fire hazard. Alternatively, a means integral with the pumps shall be provided to shut the pump off automatically to prevent a fire hazard. A label s
35、hall be provided cautioning against operating the pump dry for more than 1 min. 5 Electrical requirements 5.1 Bilge pumps shall be of the two-wire type or three-wire type if for manual or automatic operation, with both power (positive) and return (negative) conductors insulated from the motor housin
36、g and the pump housing. SANS 8849:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 8849:2003(E) ISO 2003 All rights reserved 35.2 Conductors used for connection to the power supply shall be of stranded copper meeting the size, current ca
37、pacity and insulation requirements of ISO 10133. 5.3 Submersible pumps shall have watertight electrical connections, IP 56 in accordance with IEC 60529. The use of a length of watertight electrical cable sealed at the pump connection is recommended, so that connections to the power supply may be mad
38、e above the normal bilge-water level. 5.4 Metallic parts of the pump housing that could be exposed to contact with bilge water and may become a source of stray current leakage shall have provisions for bonding conductor connections. Exception: pumps designed with a double-insulated electrical system
39、, requiring a break in two distinct insulation systems before electrical leakage can reach exposed metallic parts, do not require a bonding connection. 5.5 Bilge pumps shall be protected against continuously locked rotor conditions by integral overcurrent protection, or overcurrent protection in the
40、 circuit of a size to protect the bilge-pump motor, or being capable of sustaining operation with a locked rotor for 7 h without generating surface temperatures in excess of 150 C, at an ambient temperature of 60 C, and without evidence of charring, burning or melting. 5.6 Bilge pumps shall be capab
41、le of withstanding a d.c. voltage of 500 V for 1 min without leakage in excess of 1 mA. The test voltage shall be applied between the current-carrying parts and the non-current- carrying metal parts. If the pump is internally earthed, the earth connection shall be broken in order to carry out this t
42、est. 5.7 Bilge pumps designed for automatic operation shall be provided with an override switch to permit manual operation if the automatic operation fails. 6 Marking Each bilge pump shall be marked as follows by a name-plate or other equally permanent means with at least the following information: manufacturers name or identification; model and/or serial number; electrical rating in volts and amperes; ISO 8849; output rating at 10 kPa (1 m lift) (see 4.3). SANS 8849:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.
