1、BRITISH STANDARD Liquid pumps - Pump units with frequency inverters - Guarantee and compatibility tests The European Standard EN 12483:1999 has the status of a British Standard ICs 23.080 BS EN 12483:1999 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW - - STD-BSI BS EN 12483-
2、ENGL 1779 Lb24bb9 077502b 330 direction of the Engineering Amd. No. Date Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 September 1999 BS EN 12483:1999 Comments National foreword This British Standard is the English hguage version of EN 124
3、83: 1999 The UK participation in its preparation was entrusted to Technical Committee MCW6, Pumps and pump testing, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible European committee any enquiries on the - monitor related international and Europe
4、an developments and promulgate inteipretation, or proposals for change, and keep the UK interests informed; them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Stan - true RMS readings; - crest factor to be n
5、ot less then 3; - frequency range to be not less than 20 ldiz. For tests using the thermodynamic method conforming to IS0 5 198, care shall be taken to ensure that the head generated by the pump falls within the band of accepted accuracy. This is achieved by relating the generated head to the uncert
6、ainties of the differential temperature measurement in mK as set out in the Table 1. Table 1 -The minimum value of total head related to the uncertainties of temperature measurements 5 Test procedures 5.1 The guarantee test The test is carried out in two stages: the first stage establishes the perfo
7、rmance of the pump without the influence of the inverter, and the second stage identifies any modified performance arising from using the inverter, and allows the calculation of the effective efficiency of the inverter. 5.1.1 Testing the pump The pump shall be installed for the test without the inve
8、rter in the electric supply line using either the contract motor or a suitable substitute motor. For rotodynamic pumps, if the specified duty points are at a speed different fiom nominal speed or for liquid characteristics different fiom those of the test liquid, they shall be corrected to duties at
9、 the speed of the test motor and to the characteristics of the test liquid by the application of the Affinity Laws as described in prEN IS0 9906: 1995. Care shall be taken to avoid overloading any element of the test arrangement as a result of operating at the corrected conditions. For positive disp
10、lacement pumps, the correction to a duty at a nominal speed shall be made whilst keeping the load on the motor constant by, for example, changing the outlet pressure. For tests conforming to prEN IS0 9906: 1995, the rate of flow, head, speed, and power absorbed shall be measured and recorded with th
11、e pump operating at (or close to) each specified or corrected duty point, and the motor efficiency obtained from calibration or from the summation of losses method or from consultation with the motor supplier. 8 BSI 09- I999 Page 5 EN 12483:1999 For tests conforming to the thermodynamic method in IS
12、0 5 198 readings of the differential head and temperature rise shall be measured and recorded with the pump operating at (or close to) each specified or corrected duty point. The test values shall be compared with the corrected guarantee values and the pump performance shall be considered to have be
13、en verified if the test values fall within the acceptance limits defined in prEN IS0 9906:1995 or as otherwise agreed between the purchaser and the supplier. The readings and the results shall be recorded. 5.1.2 Testing the inverter If a substitute motor has been used for testing the pump it should
14、be replaced by the contract motor and the ir kmter shall be introduced into the test arrangement without any change to other items of equipment. The pump siiall be operated at or close to each of the specified duty points, and the inverter adjusted to give the same speeds as were achieved for testin
15、g the pump. The flow rate, or if appropriate the liquid temperature rise across the pump, head, and the power absorbed at the electrical input to the inverter, shall be measured and recorded. The overall system efficiency shall be calculated as: x 100 power output from the pump in kW power input to
16、the inventer in kW overall system efficiency, 9 % = l3r The inverter/motor efficiency shall be calculated as: x 100 power output from the motor in kW power input to the inverter in kW inverter/motor efficiency, qnv.mt., % = This method allows the calculation of the effective inverter efficiency as f
17、ollows: x 100 inverter/mtor efficiency motor efficiency effective inverter efficiency, tfinv., % = NOTE I The motor efficiency to be used in this calculation should be the value advised by the motor supplier. NOTE 2 The effective inverter efficiency reached by this method could be different from the
18、 inverter efficiency given by the manufacturer ofthe inverter resulting from different load conditions and the electrical characteristics of other elements of the system. The overall system efficiency derived from the test results shall be compared with the guarantee value overall system efficiency
19、and its tolerances agreed between the purchaser and the supplier before the commencement of the tests. 5.2 Compatibility test The test shall be carried out at operating conditions agreed between the purchaser and the supplier. In the absence of specific agreement, the test shall be conducted at a du
20、ty falling within the range of duties for which the equipment is being supplied, and preferably within +5 % or -5 % of the flow rate coinciding with the best efficiency of the pump at synchronous speed. Starting from the set conditions the inverter frequency shall be changed steadily to make the pum
21、p operate through the agreed range of duty points. The response of the system shall be reproducible and agreed by the purchaser and the supplier to be acceptable taking into account such characteristics as noise, vibration, and electrical phenomena. Any performance data recorded during the compatibi
22、lity test cannot be used to accurately determine the pump/motor efficiency. 6 BSIO9-1999 Page 6 EN 12483:1999 6 Test report The verification of the guarantee shall be reported on data sheet (see annex A): - calculation of equivalent guarantee duty; - report of test results. The minimum data to be sh
23、own are: - identification of the pump; - identification of the motor(s) used for the test; - identification of the inverter; - the specified duty point and speed; - the equivalent duty point at nominal speed; - the performance results without the use of the inverter; - the performance results with t
24、he use of the inverter. O BSI09-1999 STD-BSI BS EN 12483-ENGL 1799 1b24bb7 0775033 570 Inverter losses Inverter input power Overall system efficiency Page 7 EN 12483:1999 kW kW % Annex A (informative) Example of data sheet for verification of guarantee Verification of guarantee Calculation of equiva
25、lent guarantee duty Pump manufacturers reference Customer Customer reference I _ pump type Motor typemanufacturer Inverter type/manufacurer Testing standard I Drive losses I Motor efficiency 1% I I Motor input power IkW I I I Notes: I I Prepared by: I Approved by: I O BSI 09- I999 STD=BSI BS EN 1248
26、3-ENGL 1979 II lib24bb9 079503q 407 Specified duty point Page 8 EN 12483:1999 Equivalent duty point at nominal speed Verification of guarantee Report of test results Pump output power Pump input power Pump manufacturers reference I kW kW Customer Customer reference hunp efficiency Inverter/motor eff
27、iciency Achieved overall system efficiency Electrical power input Pump type I % kW % % Testing standard I Guaranteed overall system efficiency Achieved overall system efficiency YO % I Head Im I I Speed I min- I I Guaranteed overall system efficiency I % I Test 1 Test 2 Test basis Power direct from
28、mains Power through inverter I Drive losses IkW I I Pumpset is therefore acceptedrejected Notes Tested by: I Witnessed by: I O BSI 09- I999 BS EN 12483:1999 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution BSI is the independent national body responsible for preparing Bri
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