Replacement Switching Diagram - Data For A Phase; Slip Frequency - Parker Compax3 Series Operating Instructions Manual

Setting up Compax3
188

Replacement switching diagram - data for a phase

This data can be obtained from the manufacturer or be determined by measure-
ment.
U1: Nominal phase voltage
R1: Stator leg resistance
Leak reactance (for f=50Hz mains frequency)
X1σ=2πfL1σ:
Stator leakage inductance
L1σ:
Main reactance (for f=50Hz mains frequency)
X =2πfL :
h H
Main field inductance
LΗ:
X2σ'=2πfL2σ: Referenced leak reactance (for f=50Hz mains frequency)
Rotor leak inductance
L2σ:
R ': Referenced carriage resistance
2
I : Magnetization Current
mR

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
⋅
f 60
S
=
f [ mHz ( el .)]
2
⋅
f 60
S
=
f [Pr omille ]
2
Whereas P = value before the point of the term è
f : Synchronous nominal frequency (dimensioning base)
s
N : Nominal speed in rpm
Nominal
f : Slip frequency in mHz (electrical)
2
192-120114 N5 C3I22T11 June 2008
P
− ⋅
N
Nenn
2
⋅ ⋅ =
f 1000
S
⋅
f 60
S
P
− ⋅
N
Nenn
2
⋅
1000
⋅
f 60
S
⎛ ⎞
P
− ⋅ ⋅ ⎟
⎜ f N 1000
S Nenn
⎝ 120 ⎠
⋅ 60 ⋅
f 2
s
N
Nenn
C3I22T11