SIEMENS
3-5
2015 Low Voltage AC Motors Selection and Pricing Guide
Balance
All SIMOTICS motors are dynamically balanced to commercial
limits measure in accordance with NEMA MG1-12.06.
Modified motors can be built to exceed standard commercial
limits based on Table 1 below.
Balance Limits
Maximum amplitude, inches, peak to peak
Velocity, inches, inches/seconds
NOTE: IN P-P refers to amplitude displacement.
NEMA unfiltered velocity limit 0.15 in/s peak.
IEEE Std 841 unfiltered velocity limit 0.08 in/s peak.
NOTE: For balance limits greater than Precision balance, contact factory.
Bearings
Insulated bearings are only available as sealed bearings.
Motors having roller bearings (444T to 449T) require a
minimum radial load. Use of these motors in direct connected
applications is
discouraged to avoid excessive drive end
bearing noise and/or reduced bearing life.
Connections
Part Winding Start
- Starting torques are reduced at the
motor shaft.
Wye Start - Delta Run
- Starting torques are reduced at the
motor shaft.
Standard 50 hertz voltages are 220, 380, 400, 415, 440, 550
and 220/380.
Standard 60 hertz voltages are 200, 230, 460, 575 and
230/460.
Balance
NEMA
Precision
Extra Precision
RPM
143T
143T
364T
143T
284T
364T
449T
326T
449T
256T
326T
449T
mils P/P
mils P/P
mils P/P
0
-
999
2.5
0.5
0.75
0.2
0.3
0.4
1000 - 1999
2.0
0.5
0.75
0.2
0.3
0.4
2000 - 2999
1.5
0.5
0.75
0.2
0.3
0.4
3000 - 4000
1.0
0.5
0.75
0.2
0.3
0.4
Balance
NEMA
Precision
Extra Precision
RPM
143T
143T
364T
143T
284T
364T
449T
326T
449T
256T
326T
449T
in/sec
in/sec
in/sec
0
-
999
0.1308
0.0262
0.0392
0.1050
0.0157
0.0209
1000 - 1999
0.2093
0.0523
0.0785
0.0209
0.0314
0.0419
2000 - 2999
0.2355
0.0785
0.1178
0.0314
0.0471
0.0628
3000 - 4000
0.2094
0.1047
0.1571
0.0419
0.0628
0.0838
Special features detail
Introduction
General
PurposeMotors
Hazardous
Duty Motors
Definite
Purpose Motors
Special
Features Detail
Options Selection
and Pricing
Typical
Performance Data
General
Dimensions
Severe
Duty Motors
Part Number
Index