This document presents the equivalent circuit diagram of an induction motor and summarizes the results of various tests on a 5 HP, 4-pole, 220 V, 3-phase, 60 Hz induction motor with a B-type winding design and nominal current of 12.9 A. The tests included: 1) Stator resistance (CD) test to measure stator resistance 2) No-load (vacuum) test to measure nominal voltage 3) Blocked rotor test to measure nominal current The test results found: 1) CD voltage = 13.8 V 2) No-load voltage = 220 V, current = 13.0 A, power = 200 W 3

1. +
-
oLLV
0
3
∠
R1
j X 1
j X 2
j Xφ s
R2
1I 2I
CIRCUITO EQUIVALENTE DEL MOTOR DE INDUCCION

2. A
V
PRUEBA DE CD (Resistencia del estator)
CDI
V
R CD
21 =
VCD
I CD

3. 1
2
22
NL
2NL
22
NL
NL
NL
**3
X
I3
I3
V
Z
RIPP
RZ
P
R
XR
NLNLROT
NLNL
NL
NL
NLNL
−=
−=
=
+==
PRUEBA DE VACIO (VOLTAJE NOMINAL)
VNL
V
A
INL
+
+
+
+
VARIAC
TRIFASICO
PNL
+
-
oNLV
0
3
∠
R1
j X 1
j X 2
j Xφ
02 ≈NLI
NL
I
CIRCUITO EQUIVALENTE

4. VRB
V
A
IRB
+
+
+
+
VARIAC
TRIFASICO
PRB
PRUEBA DE ROTOR BLOQUEADO (CORRIENTE NOMINAL)
22
RB
2RB
22
RB
RB
RB
X
I3
I3
V
Z
RBRB
RB
RB
RBRB
RZ
P
R
XR
−=
=
+==
2
2
12
2
2
21
1
)(







 +
−=








+
+=
−=
φ
φ
φ
φ
φ
X
XX
RRR
XX
X
RRR
XXX
RB
RB
NL
Clase X1 X2
A 0.5 0.5
B 0.4 0.6
C 0.3 0.7
D 0.5 0.5
Rotor Devanado 0.5 0.5
Fracción de XRB
CIRCUITO EQUIVALENTE
+
-
3
RBV
R1 j X 1 j X 2
j Xφ
2R
nom1 II =RB 2I

5. [ ]
[ ]
[ ] WRIPP
RZ
P
R
NLNLROT
NLNL
NL
NL
15.176)5308.0(87.33200**3
52.3245.482.32X
45.4
87.33
200
I3
82.32
87.33
220
I3
V
Z
2
1
2
2222
NL
22NL
NL
NL
NL
=−=−=
Ω=−=−=
Ω===
Ω===
[ ]
[ ]
[ ]
[ ] Ω==
Ω==
=



−=−=
Ω===
Ω===
1425.19042.16.0
7617.09042.14.0
9042.1
15
60
9351.00493.1X
9351.0
93.123
469
I3
0493.1
93.213
23.5
I3
V
Z
2
1
2222
RB
22RB
RB
RB
RB
X
X
RZ
P
R
RBRB
RB
RB
[ ] 4339.0
76.31
76.311426.1
5308.09351.0
)(
76.317618.052.32
2
2
2
2
12
1
=


 +
−=







 +
−=
Ω=−=−=
R
X
XX
RRR
XXX
RB
NL
φ
φ
φ
5 HP, 4 POLOS, 220 V, 3φ, 60 HZ, Diseño B, Inom=12.9 A
Ω=== 5308.0
)13(22
8.13
1
CDI
V
R CD
+
-
o
0
3
220
∠
0.5308Ω j 0.7617Ω j 1.1425Ω
j 31.76 Ω
Ω
s
4339.0
1I 2I
CD VACIO RB
13.8 V VNL=220 V VRB=23.5 V
13.0 A INL=3.87A IRB=12.93 A
PNL=200W PRB=469 W
f=60 Hz f=15 Hz
CALCULO DE PARAMETROS DE UN MOTOR DE INDUCCION
RESULTADOS DE LAS PRUEBAS