Induction motor nameplate

Nameplate Data (continued) Nominal Efficiency –Average efficiency of many samples Guaranteed Efficiency –Minimum efficiency when operated at rated nameplate values Power Factor Maximum Corrective KVAR Capacitor

Nameplate Data (continued) Design Letter Service Factor (S.F.) –Indicates permissible loading at rated nameplate voltage, frequency, etc. (115%) Insulation Class –Specifies maximum temperature rise above ambient –(Table 5.8)

Nameplate Data (continued) Frame Number –Determines mounting dimensions Enclosure Code Letter –Table 5.9 (kVA/hp) –Determine the expected locked-rotor inrush current