Interroll DL Series - Appendix; List of Abbreviations

56 of 64
Version 1.2 (08/2022) en
Translation of original operating instructions
Appendix
13 Appendix
13.1 List of abbreviations
Electrical data
P
N
in kW Rated output in kilowatt
np Number of poles
n
N
in 1/min. RatedspeedofrotorinrevolutionsperminutefNinHz
f
N
inHz RatedfrequencyinHz
U
N
in V Rated voltage in volt
I
N
in A Rated current in amperes
I
0
in A Rated open-circuit current in amperes
I
max
in A Maximum current in amperes
cos φ Power factor
η
Eciency
J
R
in kgcm
2
Rotor moment of inertia
I
S
/I
N
Ratio of startup current to rated current
M
S
/M
N
Ratio of starting torque to rated torque
M
P
/M
N
Ratio of pull-up torque to rated torque
M
B
/M
N
Ratio of pull-out torque to rated torque
M
N
in Nm Rated torque of rotor in Newton meters
M
0
in Nm Stalled torque in Newton meters
M
max
in Nm Maximum torque in Newton meters
R
M
inΩ Phase resistance in ohms
R
P
inΩ Phase to phase resistance in ohms
R
A
inΩ Phase resistance of auxiliary winding in ohms
L
sd
in mH Inductance of d-axles in millihenry
L
sq
in mH Inductance of q-axles in millihenry
L
sm
in mH Averaged inductance in Millihenry
k
e
in V/krpm Induced motor voltage
T
e
in ms Electrical time constant in milliseconds
k
TN
in Nm/A Torque constant in Newton meter per ampere
U
SH
in V Heating voltage in volts
U
SH delta
in V Standstill heating voltage in delta connection in volts
U
SH star
in V Standstill heating voltage in star connection in volts