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P1. The motor to be studied in this lab is a 4-pole, three-phase, 60-Hz, 208-V machine whose parameters are Rs = 12 2. Rr=18

Table Pl: Theoretical developed torque values Shaft Speed Slip Theoretical s Developed Torque (Nm) 1800 1750 N (rpm) 1700 165

Torque T = 2Tmax 1+(1,170) S)+(1+0) S тах where the maximum torque Tmax is given by Tmax 1 1+1+Q2 and takes place at a slip o

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Given dati p=41 VL - 208V If = 60112 Rs =122 I Rr =185 km - 1600 XL = 221 Rs = R1 RYR2 Solution ; 120 X 60 - 1800 rpm SynchroT 18.303 .s. Smax 2 s²+ Smax +0.9577s. Smax putting Smax = 0.7182 : .T : 13.145.5 57 0.6878.5 + 0.5158 Shaft speed slip (5)1150 013611 5.306 loo 0388 5:465 1000 0:444 5.731 900 015 5.922 800 0.555 6.051 700 0-611 6.133 600 0.666 6.176 500 0722 6.18

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