Marathon Y374

Marathon · MicroMAX™
1/2 HP 1725 56C TENV 230V|460V 1000:1 Turndown
Catalog Number: Y374
Model Number: 056H17T2018
HP
1/2
RPM
1800
Voltage
230V, 460V
Frame
56C
Phase
3
Enclosure
TENV
Material
Rolled Steel
Mounting
C-Face / Round Body

Product-line overview

Face those tough industrial applications with Marathon Motors’ 1000:1 turndown motors. These inverter duty motors can take on the contaminated environments of manufacturing and fabrication while providing the constant torque you need. Select your VFD-ready motor from a range of rating options.

CAD$469.01
Ships next business day

Available for Delivery

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Stock Locations

Edmonton, AB: Out of Stock
Mississauga, ON: In Stock

Technical Support Available 8:30am-6:00pm EST

Call 1-800-890-7593

Cross-Referenced Matches (1)

Equivalent alternatives from other brands that have matching specifications to this product.

Description

Designed for direct replacement of PMDC or any other variable speed application where up to a 1000:1 constant torque speed range is required. Typical uses include: machine tools, conveyors, packaging machines, batching machines, and printing equipment.

Feature

  • Designed to replace PMDC motors (when used with a VFD)
  • Constant horsepower to twice base speed (RPM)
  • Class H insulation with CR200 corona resistant magnet wire
  • Continuous duty at 40ºC ambient
  • Top mounted conduit box as found on PMDC motors
  • Eliminates brush and commutator maintenance
  • UL recognized, CSA certified, and CE mark
  • Three year warranty

What is an Inverter Duty Motor

The terms ‘inverter duty’, ‘vector duty’ and ‘1000:1 turndown’ duty may be used interchangeably within the motor community, although these terms mean different things.

Inverter rated often refers to any motor with minimal turndown ratios, such as 10:1 turndown. Whereas 1000:1 turndown offers specific construction and capability. All 1000:1 motors are inverter duty, but not all inverter duty motors are 1000:1 turndown. 1000:1 turndown motors are used in applications where the motor shaft must spin incredibly slow.

What they do have in common is this. These motors provide constant torque, meaning they offer a consistent torque from zero to base speed when operated with a variable frequency drive (VFD). Inverter duty motors also have the ability to provide holding torque. This is when a motor can deliver its full rated torque output when at zero speed without suffering from damage due to overheating.

People are asking:

  • How to tell if a motor is inverter duty rated?
    • Because most motors are now inverter ready, it’s not always indicated on the nameplate. However, if you do see a turndown ratio listed on the nameplate (i.e. 10:1 or 40:1 or 1000:1), this indicates the motor is inverter duty. You may also see ‘CT’ or ‘VT’ listed on the nameplate (constant torque and variable torque, respectively), which is a sign that the motor is inverter rated.
  • What is the difference between inverter duty and general-purpose motors?
    • When an inverter duty motor is running substantially slower than the base speed, the motor will have reduced cooling efficiency. This is because the fan is powered by the motor shaft, and as the shaft speed decreases, so does the cooling ability of the fan.
    • Inverter duty motor wires will be rated for 1600-volt spikes, as they’re coated with high dielectric strength film.
    • Inverter duty motors will have insulation class F or H.
    • High temperature bearing grease will be required.
    • Insulated bearings are required for inverter duty motors.
  • What is the difference between inverter-ready and inverter-duty motors?
    • Most industrial motors made today are ‘inverter-ready’ motors, meaning they are suitable for use for use with VFDs. They can handle variable torque loads over a range of speeds. Whereas ‘inverter-duty’ motors have specific construction and capability. They have special spike resistant insulation systems.

Insulation Class for Inverter Duty Motors

Because VFDs can cause high-frequency voltage spikes in the motor windings, specific insulation is required with inverter duty motors. Class F or class H insulation is required when using inverter duty motors to protect the motors windings.

Where to Buy Inverter Duty Motors in Canada

Shop 1000:1 turndown motors online through our Canadian website today. With over 400 SKUs and convenient filtering options, you can easily find the motor you’re searching for.

eMotors Direct’s stock of inverter duty motors are used in industrial applications that require precision and performance from a compact and lightweight motor.

Our vector duty electric motor category covers a selection of motors with a 1000:1 turndown ratio. Choose a motor from fractional horsepower up to 1000 HP and a variety of frame sizes. Select a voltage input and RPM output rating that matches your intended application. Ensure you choose an enclosure type that will keep your motor’s internals safe from contamination, choose from ODBC, TEAO, TEBC, TEFC, and TENV. All available from your most trusted brands; Baldor, Leeson, Marathon, and Nidec.

Need a hand finding the right motor for your application or legacy replacement? Contact our motors experts. They have extensive knowledge, backed by over 45 years of experience, to help you with your electric motor project.

Electrical Data
Rated Motor Output Power
1/2 HP
0.37 kW
Rated Motor Speed
1725 RPM
Rated Motor Voltage
230V, 460V
Rated Motor Current
1.8/0.90 AMP
Phase
3
Poles
4
Locked Rotor Current
-
Fl Current @ 208V
-
Service Factor
1
KVA Code
N
Nominal Efficiency
74
Nominal Power Factor
69
Leads (Qty, Size)
-
Frequency
60 Hz
Connection
-
Start Capacitor
-
Run Capacitor
-
MFD
-
VFD (S.F. 1.0)
Ratio
Hz
Variable Torque
-
-
Constant Torque
-
-
General Data
Frame
56C
Enclosure
TENV
Mounting
C-Face / Round Body
Number of Speeds
-
Approximate Weight
22lb
Double Drilled
No
Frame Material
Rolled Steel
C-Dimension
9.91"
NEMA Design
-
Degree of Protection (IP)
IP43
Insulation Class
H
Rotation
Reversible
Duty
Continuous
Conduit Box Location
-
Removable Feet
No
Orientation
Horizontal
Ambient Temp
40°C
Full Load Temperature Rise
Full Load Temp Rise
-
Temp Code
-
Mechanical Data
DE Bearing
6203
NDE Bearing
6203
Shaft Diameter
0.625"
Shaft Length
2"
Grease Type
-
Greaseable
No
Hazardous Locations
CSA Certified
-
Temp Code (Sine Wave Power)
-
Temp Code (VFD Power)
-
Additional Information
Agency Approvals
CSA, UL & CE
Country of Origin
-
Warranty
3-Year

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About Marathon

With a strong presence in North America, Marathon Motors Canada ships directly from Toronto, Montreal, and Edmonton. Marathon is known for its wide variety of products, but offers specialized products for the HVAC, manufacturing, and Oil & Gas industries. Product offers including IEC and NEMA standard motors, allowing for brand consistency within manufacturing facilities.

The company implements rigorous quality control measures to ensure the reliability and durability of its electric motors. Backed by parent company Regal Rexnord, Marathon Motors offers a deep bench of expert technical support.

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