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64% of the normal LR torque
T
LRredvolt
107.869 lb ft
⋅
=
T
LRredvolt
RedVolt
2
T
LR
⋅
=
RedVolt
80 %
⋅
=
At reduced voltage, we get the %V squared times the normal LR torque
T
LR
168.546 lb ft
⋅
=
T
LR
Factor
TLR
T
rated
⋅
=
Factor
TLR
140 %
⋅
=
The minimum expected starting torque can be found from table 75:
T
rated
120.39 lb ft
⋅
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Unformatted text preview: = T rated 5252 HP ⋅ RPM lb ⋅ ft ⋅ = Rated torque can be found from rated horsepower and speed NEMA Code letter is G f 60 Hz ⋅ = RPM 1745 = η 93 % ⋅ = I L 115 A ⋅ = V L 200 V ⋅ = HP 40 = kVAR kW ≡ Problem 719: Solution kVA kW ≡ rpm 1 min ≡...
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This note was uploaded on 03/26/2012 for the course ECET 231 taught by Professor Piller during the Spring '12 term at Purdue University.
 Spring '12
 Piller

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