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Setting
up Compax3
C3I12T11
190
192-120113 N08 C3I12T11 - December 2010
Replacement switching diagram - data for a phase
This data can be obtained from the manufacturer or be determined by
measurement.
U1:
Nominal phase voltage
R1:
Stator leg resistance
X
1σ
=2
π
fL
1σ
:
Leak reactance (for f=50Hz mains frequency)
L
1σ
:
Stator leakage inductance
X
h
=2
π
fL
H
:
Main reactance (for f=50Hz mains frequency)
L
Η
:
Main field inductance
X
2σ
'=2
π
fL
2σ
: Referenced leak reactance (for f=50Hz mains frequency)
L
2σ
:
Rotor leak inductance
R
2
':
Referenced carriage resistance
I
mR
:
Magnetization Current
Slip Frequency
The slip frequency is stated in [Hz electrical] or in [‰] and can be determined as
follows
f2[mHz (electrical)]= (fs*60-Nnominal*P/2)/N
1000
60
2
60
]
[Pr
1000
120
1000
60
2
60
.)]
(
[
2
2
⋅
⋅
⋅
−
⋅
=
⋅
⋅
−
=
⋅
⋅
⋅
⋅
−
⋅
=
S
Nenn
S
Nenn
S
S
S
Nenn
S
f
P
N
f
omille
f
P
N
f
f
f
P
N
f
el
mHz
f
Whereas P = value before the point of the term è
Nenn
s
N
f
2
60
⋅
⋅
f
s
:
Synchronous nominal frequency (dimensioning base)
N
Nom
:
Nominal speed in rpm
f
2
:
Slip frequency in mHz (electrical)