Product Specification

BrandMarathon Electric
Part Number256TTFNA16574
General Details
CategorySevere Duty
Product LineBlue Chip
HP20
KW14.92
RPM1800
Voltage230/460
EnclosureTEFC
Frame256T
Motor StandardsNEMA
Technical Details
WireN/A
Number of LeadsN/A
Nema DesignB
NameplateN/A
MountRigid
Motor TypeAC Motor
Motor StandardsNEMA
KW14.92
Insulation ClassF
Ingress ProtectionIP55
PaintBLUE (EPOXY)
Phase3
Pole4
Weight375
Voltage230/460
Thermostats ThermistorsConsult Manufacturer
Temperature RiseN/A
Space HeatersOptional
Shaft Diameter inN/A
Service Factor1.15
RPM1800
RotorN/A
HP20
Hertz60
Grounding TerminalN/A
DutyS1
Drip CoverN/A
Drains BreathersN/A
Down Thrust lbsN/A
Direction of RotationN/A
C Dimension25.27
Conduit BoxN/A
Bearings NDE6210
Bearings DE6309
EfficiencyN/A
Elevation3300
EnclosureTEFC
Grounding RingN/A
GreasePOLYREX EM
Full Load Efficiency93.0
Full Load Amps48.0/24.1
Frame MaterialCAST IRON
Frame256T
FlangeN/A
FanN/A
EncodersN/A
Ambient Teperature40
Area Classification
Area ClassificationN/A
Temp CodeN/A
Perfomance
Breakdown Torque146 LB-FT 247%
Noise Level dB A65 dBA
No Load Current17 / 8.5
Power Factor 10084&83.5
Power Factor 5072
Power Factor 7581
Pull Up TorqueN/A
Rotor Inertia lb ft3.2 LB-FT^2
Safe Stall Time Cold25 SEC.
Safe Stall Time hotN/A
Starts Hour2
Nema Load lb ftN/A
MAX RPMN/A
Max Allowable Inertia lb ft125 LB-FT^2
Efficiency 10093&92.5
Efficiency 5093
Efficiency 7593.6
Full Load CurrentN/A
Full Load Speed1775
Full Load Torque59.2 LB-FT
Guaranteed Eff92.4
KVA CodeG
Locked Rotor Current276 / 138
Locked Rotor Torque105 LB-FT 177%
Start TypeLINE OR INVERTER
Speed Range
CT10:1
VT10:1
Misc
Brake RatingN/A
NoteN/A
OEMN/A