Product note MEPS scheme for low voltage motors in Brazil
Brazil has had mandatory Minimum Energy Performance Standards (MEPS) for three-phase squirrel cage induction motors since December 2009. The law [1] regulates manufacturing and importation of motors that are to be connected to the national power grid, Eletrobras. From June 2010 the law applies to sales of stocked motors and importation of motors mounted on other equipment, such as pumps, fans, compressors, conveyors, gearboxes, etc. Note that the law also applies to auxiliary motors used for forced ventilation of other, larger motors. In December 2012 the coverage was extended.
Current legislation Motors covered by current legislation [2] −− −− −− −− −−
−− −− −− −−
Three-phase squirrel cage induction motors Rated voltage up to 1000V Rated frequency of 50Hz or 60Hz, for operation at 60Hz One or more speeds, for operation at one unique speed Rated outputs: 2- and 4-pole 0.75-185kW 6-pole 0.75-150kW 8-pole 0.75-110kW Continuous operation S1 or S3 (≥80%) acc. to NBR 17094-1:2008 Categories N, H, NY and HY cc to NBR 17094-1:2008 Air cooled motors (with or without fan) Ex nA motors for explosive atmospheres
Examples of motors not subject to the legislation −− −− −− −− −− −−
Servomotors and permanent magnet motors SynRM motors Water cooled motors Special application motors (roller table, smoke ventilation) Intermittent or variable speed operation, duty cycles S2, S3 (<80%), and S4 to S10 acc. to NBR 17094-1:2008 Note: for example, an M3BP motor driven by frequency converter is excluded from NBR requirement, but only if stamped with S9 duty on the rating plate (Variant code 095)
− − Ex e, Ex d(e) and DIP motors for explosive atmospheres − − Motors for re-export (incl. motors mounted on other equipment) − − Marine, offshore and other motors not fed by the Eletrobras grid Minimum efficiency levels and NBR test method The minimum efficiency levels [3] are close (but not identical) to the levels defined by IEC 60034-30 for IE2 classification at 60Hz.
The only test method allowed (“variation of method 2”, which is defined in paragraph 15.4.2 of Standard NBR 5383-1:2002) is similar (but not identical) to the indirect method in IEC 60034-2-1:2007 with PLL determined from measurement. Table 1: Minimum efficiency levels (60 Hz) Power
Minimum Efficiency %
kW
HP
0.75 1.1 1.5 2.2 3 3.7 4.5 5.5 7.5 9.2 11 15 18.5 22 30 37 45 55 75 90 110 130 150 185 220 260 300 330 370
1 1.5 2 3 4 5 6 7.5 10 12.5 15 20 25 30 40 50 60 75 100 125 150 175 200 250 300 350 400 450 500
1) 4)
1)
2 poles
4 poles
6 poles
8 poles
80.0 2) 82.5 83.5 2) 85.0 2) 85.0 3) 87.5 88.0 3) 88.5 89.5 89.5 90.2 90.2 91.0 91.0 91.7 92.4 93.0 93.0 93.6 94.5 94.5 94.7 95.0 95.4 94.5 4) 95.0 4) -
80.5 2) 81.5 2) 84.0 85.0 2) 86.0 3) 87.5 88.53) 89.5 89.5 90.0 91.0 91.0 92.4 92.4 93.0 93.0 93.6 94.1 94.5 94.5 95.0 95.0 95.0 95.0 95.54) 95.5 4) 95.5 4) 95.8 4) 95.8 4)
80.0 77.0 2) 83.0 2) 83.0 2) 85.0 3) 87.5 87.53) 88.0 2) 88.5 2) 88.5 90.2 90.2 91.7 91.7 93.0 93.0 93.6 93.6 94.1 94.1 95.0 95.0 95.0 95.0 4) 95.04) 95.4 4) 95.4 4) 95.4 4) -
70.0 3) 77.0 3) 82.5 3) 84.03) 84.5 3) 85.5 3) 85.53) 85.5 3) 88.53) 88.5 3) 88.5 3) 89.5 3) 89.5 3) 91.0 3) 91.0 3) 91.7 3) 91.7 3) 93.0 3) 93.0 3) 93.6 3) 93.6 3) 94.5 3) 4) 94.5 3) 4) 95.0 3) 4) 95.03) 4) 95.0 3) 4) -
Metric; 2) Value differs from IE2; 3) 8-poles not included in IEC60034-30; Not law, but defined by NBR 17094-1: 2008
Power / frame relation according to NBR 17094-1:2008 The power / frame relation defined by NBR 17094-1:2008 differs from that defined by IEC for 60Hz. Note that this relation is not regulated by law. Motors for explosive atmospheres Electric motors for explosive atmospheres are subject to additional requirements that are not described in this document. Table 2: Power / frame relation according to NBR Power kW 0.18 0.25 0.37 0.55 0.75 1.1 1.5 2.2 3.0 3.7 4.5 5.5 7.5 9.2 11 15 18.5 22 30 37 45 55 75 90 110 132 150 185 220 260 300 330 370 1)
Frame HP 1) 0.25 0.33 0.50 0.75 1 1.5 2 3 4 5 6.0 7.5 10 12.5 15 20 25 30 40 50 60 75 100 125 150 175 200 250 300 350 400 450 500
2 poles 63 63 63 71 71 80 80 90S 90L 100L 112M 112M 132S 132M 132M 160M 160M 160L 200M 200L 225S 225M 250M 280S 280M 315S 315S 315M 355 355 -
4 poles 63 63 71 71 80 80 90S 90L 100L 100L 112M 112M 132S 132M 132M 160M 160L 180M 200M 200L 225S 225M 250M 280S 280M 315S 315S 315M 355 355 355 355 355
6 poles 71 71 80 80 90S 90S 100L 100L 112M 132S 132S 132M 132M 160M 160M 160L 180L 200L 200L 225M 250S 250M 280S 280M 315M 315M 315M 355 355 355 355 355 -
8 poles 71 80 90S 90L 90L 100L 112M 132S 132M 132M 160M 160M 160L 180M/L 180L 180L 200L 225S 225M 250S 250M 280S 280M 315M 315M 355 355 355 355 355 -
ABB does not have a general approval can be imported only after receiving a batch approval. This requires that a certain number of the motors in question are tested by an INMETRO accredited test facility to confirm that their efficiency meets the stipulated levels. The batch approval procedure implies increased costs, can be time consuming and carries the risk of non-approval. It is important to note that it is the importer’s responsibility to ensure that motors have the necessary approval. Ordering of NBR compliant ABB motors When dimensioning and ordering motors that are covered by the Brazilian efficiency law, it is mandatory that only motors that have general approval are selected. To get the general NBR approval ABB has declared the efficiency values to INMETRO for all NBR motors, of which several have values higher than those in table 1. Every NBR compliant motor must be stamped with its declared value. The variant code “542 NBR design” must be used when ordering. This code includes, amongst other things, a special NBR rating plate and an additional plate or label, which is shown below.
Notes ABNT ENCE INMETRO MEPS NBR PBE RAC [1] [2] [3]
Brazilian Association of Technical Standards National Label for Energy Conservation National Institute of Metrology Minimum Energy Performance Standard Brazilian Standard Brazilian Labeling Program Evaluation Requirements of Conformity (usually attached to a “Portaria”)
Based on “Portaria Interministerial No. 553” (Dec. 8, 2005), which in turn is based on Law No. 10.295 (Oct. 17, 2001), Decrees No. 4.059 (Dec. 19, 2001) and No. 4.508 (Dec. 11, 2002). Based on “Portaria No. 488” and attachements (Dec. 08, 2010). Coverage is based on “Portaria No. 174”. Based on “Portaria No. 174”.
Metric
Validation of conformity / How to import There are two procedures for validation of electric motors to be imported into Brazil: general and batch approval. Both are described in RAC1554. ABB has general approvals for several motor types and models. Please contact ABB Brazil for the complete list. Motors covered by the law but for which
For more information please contact: www.abb.com/motors&generators © Copyright 2012 ABB. All rights reserved. Specifications subject to change without notice.
9AKK105373 EN RevB 12-2012
Intermediate power ratings For motors with power ratings intermediate to those shown in Table 1, use the minimum efficiency level for the table power closest to the motor’s rated power. If the motor’s rated power is exactly in the middle of two table powers, use the minimum efficiency level for the higher table power.
