leitmotif
Member
Greetings
Here is the status of the electric vehicle project
1. Bought 1956 Chev pickup. Body in decent shape some work needed of course.
2. Intend to use Allen Bradley Powerflex 700 VFD
3. Dream of using 75 HP TEFC motor but there are some drawbacks on this weight, larger battery, cost, and just how am I going to get the big thing to fit? Would be neat though on the drag strip. So am going most likely with 50 HP maybe open drip proof to save on weight and cost.
In the Grainger catalog listing for 50 HP motors I find a listing for NEMA MG 31 that I am unfamiliar with. I will copy that here for two motors and their part numbers then will give entire listing for one motor below.
MOTOR P/N 1XTR3
Inverter NEMA MG 1 Part 31: 100:1 Variable and 20:1 Constant Torque
MOTOR P/N 1EBH9
Inverter NEMA MG 1 Part 31: 100:1 Variable and 12:1 Constant Torque
What do the 100:1 Variable and the Constant Torque ratios mean to me?
Why the difference between the two motors when in most respects they seem identical?
Where can I study more on this to ensure I know what I am doing picking these motors and get the best one for the application?
Thanks for the help
Dan Bentler
COMPLETE descriptin of motor P/N 1XTR3
ItemNEMA Premium Efficient Motor Motor Type3-Phase EnclosureTotally Enclosed Fan-Cooled DutyInverter HP50 Nameplate RPM3550 Voltage208-230/460 NEMA/IEC Frame326TS Service Factor1.25 Hz60 Nominal Efficiency94.1 MountingBase Mounting PositionHorizontal BearingsOpen Regreasable Ball Thermal ProtectionNone Full Load Amps123.0-111.0/55.5 RotationCW/CCW Insulation ClassF ******t (C)40 Efficiency GroupNEMA Premium Length Less Shaft (In.)25 7/8 Shaft Dia. (In.)1 7/8 Shaft Length (In.)3 3/4 Frame MaterialCast Iron Body Dia. (In.)15 9/16 BaseRigid Agency ComplianceUL Recognized (E104590), CSA Certified (LR38324) FinishGreen Alkyd Enamel NEMA DesignB Phase3 NEMA StandardInverter NEMA MG 1 Part 31: 100:1 Variable and 20:1 Constant Torque Rated50 Hz Operation on 190/380V at rated HP and 5/6 of 60 Hz RPM Part Wind Start CapableNo Usable on 200V @ 1.0 SFNo
COMPLETE descriptin of motor P/N 1EBH9
ItemEnergy Efficient Motor Motor Type3-Phase EnclosureTotally Enclosed Fan-Cooled DutyInverter HP50 Nameplate RPM3555 Voltage208-230/460 NEMA/IEC Frame326TS Service Factor1.25 Hz60 Nominal Efficiency92.4 MountingBase Mounting PositionHorizontal BearingsOpen Regreasable Ball Thermal ProtectionNone Full Load Amps125.0-113.0/56.5 RotationCW/CCW Insulation ClassF ******t (C)40 Efficiency GroupEPAct Length Less Shaft (In.)25 7/8 Shaft Dia. (In.)1 7/8 Shaft Length (In.)3 3/4 Frame MaterialCast Iron Body Dia. (In.)15 9/16 BaseRigid Agency ComplianceUL Recognized (E104590), CSA Certified (LR38324) FinishBlue Alkyd Enamel NEMA DesignB Phase3 NEMA StandardInverter NEMA MG 1 Part 31: 100:1 Variable and 12:1 Constant Torque Rated50 Hz Operation on 190/380V at Rated HP and 5/6 of 60 Hz RPM Part Wind Start CapableNo Usable on 200V @ 1.0 SFNo
Here is the status of the electric vehicle project
1. Bought 1956 Chev pickup. Body in decent shape some work needed of course.
2. Intend to use Allen Bradley Powerflex 700 VFD
3. Dream of using 75 HP TEFC motor but there are some drawbacks on this weight, larger battery, cost, and just how am I going to get the big thing to fit? Would be neat though on the drag strip. So am going most likely with 50 HP maybe open drip proof to save on weight and cost.
In the Grainger catalog listing for 50 HP motors I find a listing for NEMA MG 31 that I am unfamiliar with. I will copy that here for two motors and their part numbers then will give entire listing for one motor below.
MOTOR P/N 1XTR3
Inverter NEMA MG 1 Part 31: 100:1 Variable and 20:1 Constant Torque
MOTOR P/N 1EBH9
Inverter NEMA MG 1 Part 31: 100:1 Variable and 12:1 Constant Torque
What do the 100:1 Variable and the Constant Torque ratios mean to me?
Why the difference between the two motors when in most respects they seem identical?
Where can I study more on this to ensure I know what I am doing picking these motors and get the best one for the application?
Thanks for the help
Dan Bentler
COMPLETE descriptin of motor P/N 1XTR3
ItemNEMA Premium Efficient Motor Motor Type3-Phase EnclosureTotally Enclosed Fan-Cooled DutyInverter HP50 Nameplate RPM3550 Voltage208-230/460 NEMA/IEC Frame326TS Service Factor1.25 Hz60 Nominal Efficiency94.1 MountingBase Mounting PositionHorizontal BearingsOpen Regreasable Ball Thermal ProtectionNone Full Load Amps123.0-111.0/55.5 RotationCW/CCW Insulation ClassF ******t (C)40 Efficiency GroupNEMA Premium Length Less Shaft (In.)25 7/8 Shaft Dia. (In.)1 7/8 Shaft Length (In.)3 3/4 Frame MaterialCast Iron Body Dia. (In.)15 9/16 BaseRigid Agency ComplianceUL Recognized (E104590), CSA Certified (LR38324) FinishGreen Alkyd Enamel NEMA DesignB Phase3 NEMA StandardInverter NEMA MG 1 Part 31: 100:1 Variable and 20:1 Constant Torque Rated50 Hz Operation on 190/380V at rated HP and 5/6 of 60 Hz RPM Part Wind Start CapableNo Usable on 200V @ 1.0 SFNo
COMPLETE descriptin of motor P/N 1EBH9
ItemEnergy Efficient Motor Motor Type3-Phase EnclosureTotally Enclosed Fan-Cooled DutyInverter HP50 Nameplate RPM3555 Voltage208-230/460 NEMA/IEC Frame326TS Service Factor1.25 Hz60 Nominal Efficiency92.4 MountingBase Mounting PositionHorizontal BearingsOpen Regreasable Ball Thermal ProtectionNone Full Load Amps125.0-113.0/56.5 RotationCW/CCW Insulation ClassF ******t (C)40 Efficiency GroupEPAct Length Less Shaft (In.)25 7/8 Shaft Dia. (In.)1 7/8 Shaft Length (In.)3 3/4 Frame MaterialCast Iron Body Dia. (In.)15 9/16 BaseRigid Agency ComplianceUL Recognized (E104590), CSA Certified (LR38324) FinishBlue Alkyd Enamel NEMA DesignB Phase3 NEMA StandardInverter NEMA MG 1 Part 31: 100:1 Variable and 12:1 Constant Torque Rated50 Hz Operation on 190/380V at Rated HP and 5/6 of 60 Hz RPM Part Wind Start CapableNo Usable on 200V @ 1.0 SFNo
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