The nameplate of a 3-phase asynchronous motor is represented by the below figure The motor operates at full load under a voltage of U-380V (between phases). The stator Joule's losses are P₁, 100 W and the stator iron losses are P₁-50 W. a) Determine the type of connection of the stator windings. b) Determine the number of poles (2p) and the synchronous speed (n.). c) Calculate the slip (s). d) Calculate the absorbed power (P₁). e) Show that the efficiency is n = 76%. f) Calculate the power transmitted to the rotor (P). g) Calculate the rotor Joule's losses (P). h) Calculate the mechanical losses of the motor. Pu f
The nameplate of a 3-phase asynchronous motor is represented by the below figure The motor operates at full load under a voltage of U-380V (between phases). The stator Joule's losses are P₁, 100 W and the stator iron losses are P₁-50 W. a) Determine the type of connection of the stator windings. b) Determine the number of poles (2p) and the synchronous speed (n.). c) Calculate the slip (s). d) Calculate the absorbed power (P₁). e) Show that the efficiency is n = 76%. f) Calculate the power transmitted to the rotor (P). g) Calculate the rotor Joule's losses (P). h) Calculate the mechanical losses of the motor. Pu f
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Transcribed Image Text:The nameplate of a 3-phase asynchronous motor is represented by the below figure.
The motor operates at full load under a voltage of U-380V (between phases).
The stator Joule's losses are P₁, 100 W and the stator iron losses are P₁-50 W.
a) Determine the type of connection of the stator windings.
b) Determine the number of poles (2p) and the synchronous speed (n.).
c) Calculate the slip (s).
d) Calculate the absorbed power (P₁).
e) Show that the efficiency is n = 76%.
f) Calculate the power transmitted to the rotor (P).
g) Calculate the rotor Joule's losses (PJ).
h) Calculate the mechanical losses of the motor.
3-phase asynchronous motor
LS 90 LZ
coso 0.78
??
Class
S.S11
Type
Pu 1.5 kW 11
n
f
1440 r.p.m
50 Hz
595257/3
220 V
6.65 A
380 V3.84 A
amb
40
A
Y
F
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