ANSI AMCA 207 ERTA-2017 Fan System Efficiency and Fan System Input Power Calculation.pdf

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1、 ANSIAMCA Standard 207 Editorial Errata Editorial Errata 1. In section 4.1.3.1, paragraph 6, the term should be . The paragraph will then read (change is in red text), “The combined motor and VFD efficiency is calculated in the following steps. First, the motor efficiency is calculated as Ll=. E.E?.

2、6p Where is the nominal motor efficiency obtained from Table A1 (EPCA), Table A2 (IEC 63034-30-1) or Table A3 (GB 18613), depending on the applicable motor configuration. .is the motor load ratio calculated by .” 2. Table A1, “EPCA Nominal Motor Efficiency (60 Hz motors)” is corrected on the followi

3、ng page. Values underlined and in red are the corrected values. All values in the Table were extracted from the e-CFR, 10 CFR 431.25, Table 5, “Nominal Full-Load Efficiencies of NEMA Design A, NEMA Design B and IEC Design N Motors (Excluding Fire Pump Electric Motors) at 60 Hz.” ANSIAMCA Standard 20

4、7 Editorial Errata Annex A Motor Efficiencies (Normative) Table A1. EPCA Nominal Motor Efficiency (60 Hz motors) Motor Power/Standard Kilowatt Equivalent ODP TEFC 2 POLE 4 POLE 6 POLE 8 POLE 2 POLE 4 POLE 6 POLE 8 POLE 1/.75 77.0 85.5 82.5 75.5 77.0 85.5 82.5 75.5 1.5/1.1 84.0 86.5 86.5 77.0 84.0 86

5、.5 87.5 78.5 2/1.5 85.5 86.5 87.5 86.5 85.5 86.5 88.5 84.0 3/2.2 85.5 89.5 88.5 87.5 86.5 89.5 89.5 85.5 5/3.7 86.5 89.5 89.5 88.5 88.5 89.5 89.5 86.5 7.5/5.5 88.5 91.0 90.2 89.5 89.5 91.7 91.0 86.5 10/7.5 89.5 91.7 91.7 90.2 90.2 91.7 91.0 89.5 15/11 90.2 93.0 91.7 90.2 91.0 92.4 91.7 89.5 20/15 91

6、.0 93.0 92.4 91.0 91.0 93.0 91.7 90.2 25/18.5 91.7 93.6 93.0 91.0 91.7 93.6 93.0 90.2 30/22 91.7 94.1 93.6 91.7 91.7 93.6 93.0 91.7 40/30 92.4 94.1 94.1 91.7 92.4 94.1 94.1 91.7 50/37 93.0 94.5 94.1 92.4 93.0 94.5 94.1 92.4 60/45 93.6 95.0 94.5 93.0 93.6 95.0 94.5 92.4 75/55 93.6 95.0 94.5 94.1 93.6

7、 95.4 94.5 93.6 100/75 93.6 95.4 95.0 94.1 94.1 95.4 95.0 93.6 125/90 94.1 95.4 95.0 94.1 95.0 95.4 95.0 94.1 150/110 94.1 95.8 95.4 94.1 95.0 95.8 95.8 94.1 200/150 95.0 95.8 95.4 94.1 95.4 96.2 95.8 94.5 250/186 95.0 95.8 95.8 95.0 95.8 96.2 95.8 95.0 300/224 95.4 95.8 95.8 95.8 96.2 95.8 350/261 95.4 95.8 95.8 95.8 96.2 95.8 400/298 95.8 95.8 95.8 96.2 450/336 96.2 96.2 95.8 96.2 500/373 96.2 96.2 95.8 96.2 Reference: NEMA MG-1, Table 12-12