《BS-1394-2-1987.pdf》由会员分享，可在线阅读，更多相关《BS-1394-2-1987.pdf（14页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS 1394-2: 1987 Stationary circulation pumps for heating and hot water service systems Part 2: Specification for physical and performance requirements UDC 621.67:697.3:621.65.01 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 06:11:09 GMT+00:00 2006, Uncontrolled Copy, (c) BS
2、I BS 1394-2:1987 This British Standard, having been prepared under the direction of the Light Electrical Engineering Standards Committee, was published under the authority of the Board of BSI and comes into effect on 30 October 1987 BSI 01-2000 First published October 1971 First revision October 198
3、7 The following BSI references relate to the work on this standard: Committee reference LEL/161 Draft for comment 85/28326 DC ISBN 0 580 16020 3 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Light Electrical Engineering Standards Commi
4、ttee (LEL/-) to Technical Committee LEL/161, upon which the following bodies were represented: Association of Control Manufacturers TACMA (BEAMA Ltd.) Association of Manufacturers of Domestic Electrical Appliances British Electrotechnical Approvals Board British Gas British Lawn Mower Manufacturers
5、Federation British Retailers Association Catering Equipment Manufacturers Association Consumer Standards Advisory Committee of BSI Consumers Association Department of Energy (Electricity Division) Department of Trade and Industry (Consumer Safety Unit, CA Division) ERA Technology Ltd. Economic Devel
6、opment Council Electric Cable Makers Confederation Electrical Association for Women Electrical Installation Equipment Manufacturers Association (BEAMA Ltd.) Electricity Supply Industry in England and Wales Fire Protection Association Home Office Institution of Electrical Engineers Lighting Industry
7、Federation Ltd. Ministry of Defence Portable Electric Tool Manufacturers Association Rotating Electrical Machines Association (BEAMA Ltd.) Small Electrical Appliances Marketing Association South of Scotland Electricity Board The following bodies were also represented in the drafting of the standard,
8、 through subcommittees and panels: Association of Circulator Manufacturers British Pump Manufacturers Association National Gas Consumers Council Swimming Pool and Allied Trades Association Ltd. Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun,
9、na, Fri Nov 24 06:11:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1394-2:1987 BSI 01-2000i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2Definitions1 3General1 4Marking2 5Hydraulic requirements2 6Reliability requirements3 7Acoustic requirements3 8Dimensional requirem
10、ents4 9Venting and freeing devices4 Figure 1 Diagrammatic representation of performance requirements5 Figure 2 Apparatus for hydraulic performance test5 Figure 3 Apparatus for reliability test6 Figure 4 Sound level test loop7 Figure 5 Sound level correction factor7 Table 1 Acoustic level of sound3 P
11、ublications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 06:11:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1394-2:1987 ii BSI 01-2000 Foreword This Part of BS 1394 has been prepared under the direction of the Light Electrical Engineering Standards Committe
12、e and, together with the revision of Part 1, supersedes BS 1394-1 and BS 1394-2, both of which were published in 1971, which are now withdrawn. The opportunity has been taken in this revision of BS 1394 to follow the general principle of separating requirements for safety from other requirements. In
13、 this respect Part 1 specifies safety requirements and aligns with a draft IEC standard for safety of stationary circulation pumps (soon to be published as a Part 2 in the IEC 335 series of publications) while Part 2 specifies physical and performance requirements. Both Parts 1 and 2 cover glanded a
14、nd glandless pumps having a rated input not exceeding 300 W. Previously, Part 1 specified safety and performance requirements for glanded and glandless pumps with power input above 200 W and not exceeding 2 000 W while Part 2 specified safety and performance of domestic glandless pumps with power in
15、put not exceeding 200 W. The physical and performance requirements specified in this Part of BS 1394, have been widened to include hydraulic performance, dimensions and reliability. Maximum sound levels for glandless pumps have also been added. Attention is drawn to the fact that it is a requirement
16、 of BS 1394-2, that pumps comply with the safety requirements of BS 1394-1 (see clause 3 for details). A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standa
17、rd 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, pages 1 to 8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporat
18、ed. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 06:11:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1394-2:1987 BSI 01-20001 1 Scope This Part of BS 1394 specifies the physical and performance requirements for ele
19、ctric stationary circulation pumps intended to be used in heating systems or in hot water service systems, and having a rated input not exceeding 300 W. In particular it specifies: a) marking requirements; b) hydraulic requirements; c) reliability requirements; d) acoustic requirements; e) dimension
20、al requirements. Pumps not intended for normal household use, but which nevertheless may be a source of danger to the public, such as pumps intended to be used by laymen in shops, in commercial use and on farms, are within the scope of BS 1394, but only if they have a rated input not exceeding 300 W
21、. BS 1394 does not take into account the special hazards which exist in nurseries and other places where there are young children or aged or infirm persons without supervision; in such cases, additional requirements may be necessary. BS 1394 does not apply to: a) pumps within the scope of BS 3456-2.
22、35 and pumps for circulating liquids other than water, which are covered by a separate British Standard; b) pumps designed exclusively for industrial purposes; c) pumps intended to be used in locations, where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (du
23、st, vapour, or gas). For pumps intended to be used in vehicles or on board ships or aircraft, additional requirements may be necessary. For pumps intended to be used in tropical countries, special requirements may be necessary. NOTEThe titles of the publications referred to in this Part of BS 1394 a
24、re listed on the inside back cover. 2 Definitions For the purposes of this Part of BS 1394 the definitions given in Part 1 apply together with the following. 2.1 glanded pump a pump that incorporates a shaft sealing device to prevent leakage of fluid to the atmosphere and where the motor is isolated
25、 from the fluid being pumped 2.2 glandless pump a pump that does not incorporate a shaft sealing device, the rotor of the motor being in direct contact with the fluid being pumped and where the motor is an integral part of the pump 2.3 twin pump a device which consists of two independent pump units
26、mounted on a single casing 2.4 generated head the difference in head measured between the inlet and outlet ports of a pump 2.5 dynamic head the head of water at the inlet port when the pump is operating at its normal working temperature 3 General Before pumps are submitted for approval to this Part
27、of BS 1394 they shall have met the requirements of BS 1394-11). To satisfy the requirements of this Part of BS 1394, a total of three pumps shall be submitted for testing and inspection. a) One sample shall be submitted to the test requirements of clause 6. b) One sample shall be submitted to the te
28、st requirements, in order, of 5.1, 5.8, 5.9 and clause 7. c) One sample shall be for inspection purposes. For compliance, the samples shall satisfy all the requirements and tests specified. 1) See the note to 16.1 of BS 1394-1:1987. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 06:11:09 GMT
29、+00:00 2006, Uncontrolled Copy, (c) BSI BS 1394-2:1987 2 BSI 01-2000 4 Marking 4.1 Pumps shall be marked with the information specified in 7.1 of BS 1394-1:1987, together with the number of this standard (i.e. BS 1394). 4.2 In addition of the information required by 7.10 of BS 1394-1:1987, the follo
30、wing information shall be given in the manufacturers instruction sheet: a) performance characteristics in graphical form, the vertical axis being the generated head of fluid (in metres water gauge) and the horizontal axis being the flow rate (in L/s); b) for three phase pumps, the direction of rotat
31、ion; c) fuse-link rating; d) recommended application(s); e) maximum surface temperature; f) minimum dynamic head (in metres water gauge) at maximum rated water temperature; g) effect of pump running dry (if applicable); h) limitations of pump orientation (if applicable); i) maximum static working pr
32、essure (in metres water gauge); j) dimensional details of pipe connections, where applicable see 8.1 b) and c). 5 Hydraulic requirements 5.1 The hydraulic performance of pumps shall be in accordance with the manufacturers instruction sheet see 4.2 a) when tested in accordance with 5.7 and 5.8 under
33、the conditions specified in 5.2 to 5.6. For pumps with variable flow devices, the generated head shall be: a) within + 10 % and 5 % of that specified by the manufacturer when operated at the maximum flow rate setting; b) within + 5 % and 10 % of that specified by the manufacturer when operated at th
34、e minimum flow rate setting. For pumps without variable flow devices, the generated head shall be within + 10 % and 5 % of that specified by the manufacturer. NOTESee Figure 1 for a diagrammatic representation of requirements a) and b). 5.2 The pump shall be operated at the rated voltage, or in the
35、case of a pump marked with a voltage range, at the value specified by the manufacturer on the instruction sheet, and at an ambient temperature of: 55 C to 60 C for pumps for heating systems; 15 C to 25 C for pumps for service water systems. 5.3 For short time or intermittently operated pumps, perfor
36、mance shall be measured within the rated operating period for the pump. 5.4 For continuously rated pumps, performance shall be measured either after 24 h for glandless pumps and 4 h for glanded pumps, or once steady conditions are established, whichever is the greater. 5.5 Fluid temperatures shall b
37、e maintained as follows: 55 C to 60 C for class TF 602); 75 C to 80 C for class TF 95; 75 C to 80 C for class TF 110. 5.6 For twin pumps the performance of each pump shall be measured separately. 5.7 Under the conditions specified in 5.2 to 5.6 and using the apparatus shown schematically in Figure 2
38、, measurements of generated head (in metres water gauge) shall be made at flow rates of 25 %, 50 % and 75 % of the maximum flow rate (in L/s) specified in the manufacturers instruction sheet. 5.8 For pumps of class TF 95 and TF 110, the test of 5.7 shall be repeated, but with a fluid temperature of:
39、 90 C to 95 C for class TF 95 pumps; 105 C to 110 C for class TF 110 pumps. The generated head shall be not less than 87 % of the value obtained in 5.7. 5.9 Pumps shall perform satisfactorily under conditions of minimum dynamic head when tested in accordance with 5.10. 5.10 The apparatus shown schem
40、atically in Figure 2 is used, with the pump operating at the maximum performance setting and at a flow rate of 50 % of the maximum flow specified in the manufacturers instruction sheet, and with all other conditions of test as specified in 5.2 to 5.6, the pressure in the reservoir shall be reduced u
41、ntil the reading on the pressure gauge at the pump inlet equals the minimum dynamic head declared in the manufacturers instruction sheet see 4.2 f). 2) See Table 1 of BS 1394-1:1987 for TF classification. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 06:11:09 GMT+00:00 2006, Uncontrolled Co
42、py, (c) BSI BS 1394-2:1987 BSI 01-20003 Under this condition: a) the generated head shall be at least 0.95 times that measured in 5.7; b) the acoustic noise level shall be no greater than 2 dB above the relevant value given in Table 1. 6 Reliability requirements 6.1 Pumps shall operate in a reliable
43、 manner when tested in accordance with the tests specified in 6.2 and 6.3. 6.2 The pump shall be installed within the test apparatus shown schematically in Figure 3 and shall be operated under normal load and at a voltage equal to 1.06 times the rated voltage, or the upper limit of the rated voltage
44、 range, for a period of 1 000 h. The ambient temperature, measured at least 1 m from the test apparatus, shall be maintained between 20 C and 25 C. The fluid which is pumped shall be de-oxygenated (i.e. shall be continually circulated and not replenished during the test). For continuously rated pump
45、s, the process timer shall subject the pump to periods of 5 min pumping water at a temperature of 5 C to 10 C followed by 10 min pumping water at a temperature T C, where T is equal to: 55 C to 60 C for class TF 60 pumps; 90 C to 95 C for class TF 95 pumps; 105 C to 110 C for class TF 110 pumps. The
46、 pump shall come to rest for a maximum period of 10 s between each change of water temperature. For short time or intermittently rated pumps, the operating times shall be in accordance with the manufacturers marking. All other test conditions shall be as for continuously rated pumps. 6.3 After the t
47、est described in 6.2 the pump shall comply with the following: a) the requirements specified in clause 15 of BS 1394-1:1987, the limits for insulation resistance being, however, reduced by 50 %; b) the hydraulic performance requirements specified in 5.1; c) the starting requirements specified in cla
48、use 9 of BS 1394-1:1987; d) the water pressure requirement specified in 20.26 of BS 1394-1:1987. (See note.) NOTEThis test is carried out after the pump has been allowed to cool to below 25 C. 7 Acoustic requirements 7.1 The acoustic level of sound emitted by pumps shall not exceed the relevant .val
49、ues specified in Table 1 when employing the “A” weighting network, when pumping cold water and tested in accordance with the tests in 7.2 to 7.7. 7.2 Prior to carrying out measurements, the pump shall be vented for air as necessary and allowed to run for a period of 30 min. 7.3 The pump shall be installed in a closed loop (as shown in Figure 4), 4 m in length of 40 mm diameter smooth bore rubber hose without valves and constructed and supported in such a way as to remain free of kinks. The static head of water in th