Click on a help topic:
- Search Function
- Alternate Rating Exceptions
- Results Page
- IEC Alternate Rating Codes
- NEMA Alternate Rating Codes
- Details Page
- Adobe (PDF) Documents
- Server Error
Alternate Rating Search Function:
The Alternate Rating Search function allows you to input a specific
US Motors 4 or 6 digit model number and retrieve the corresponding alternate
rating data (primary and derated horsepower). Input one or two model numbers in the
input boxes. Once you have entered your selection, press the Submit button and the Search
Results will be returned. To clear your entries, press the Reset button.
Select the Voltage / Hertz you desire from the following:
- 190V - 60Hz
- 200V - 60Hz
- 208V - 60Hz
- 220V - 60Hz
- 230V - 60Hz
- 240V - 60Hz
- 300V - 60Hz
- 380V - 60Hz
- 400V - 60Hz
- 415V - 60Hz
- 440V - 60Hz
- 460V - 60Hz
- 480V - 60Hz
- 575V - 60Hz
- 600V - 60Hz
- 2300V - 60Hz
- 2400V - 60Hz
- 4000V - 60Hz
- 4160V - 60Hz
- 190V - 50Hz
- 200V - 50Hz
- 208V - 50Hz
- 220V - 50Hz
- 230V - 50Hz
- 240V - 50Hz
- 380V - 50Hz
- 400V - 50Hz
- 415V - 50Hz
- 440V - 50Hz
- 460V - 50Hz
- 480V - 50Hz
- 575V - 50Hz
- 600V - 50Hz
- 1725V - 50Hz
- 1900V - 50Hz
- 2000V - 50Hz
- 3000V - 50Hz
- 3300V - 50Hz
- 3450V - 50Hz
Select the Ambient from the following:
- 40 Deg. C
- 45 Deg. C
- 50 Deg. C
- 55 Deg. C
- 60 Deg. C
- 65 Deg. C
Select the Altitude from the following:
- 3,300 FASL (1000 MASL)
- 4,000 FASL (1200 MASL)
- 5,000 FASL (1500 MASL)
- 6,000 FASL (1800 MASL)
- 6,600 FASL (2000 MASL)
- 7,000 FASL (2100 MASL)
- 8,000 FASL (2500 MASL)
- 9,000 FASL (2700 MASL)
- 9,900 FASL (3000 MASL)
- 10,000 FASL (3000 MASL)
- 11,000 FASL (3300 MASL)
- 12,000 FASL (3600 MASL)
- 13,000 FASL (3900 MASL)
- 14,000 FASL (4200 MASL)
- 15,000 FASL (4500 MASL)
- 16,000 FASL (4800 MASL)
Alternate Rating Exceptions:
Designs not included in Alternate Rating Catalog are listed below:
- All Multi-Speed designs
- Designs without a Model Number
- Horsepower & Pole combinations not defined by
NEMA Design B or IEC Design N
- Designs that must perform to a governing
specification includes Efficiency (NNE), Temperature rise limits other than
"F" rise, or restricted performance characteristics. Examples:
- IEEE 841
- VFD Designs
- Cryogenics
- Proprietary Designs
- BAC
- Evapco
- Grainger
- Elevator
Nidec Motor Corporation Marketing approves all Alternate Rating Model Numbers additions.
Alternate Rating Results Page:
Based on your query, the filtered results are returned. -ALT
in the model number field indicates an alternate rating design. Click on the Model
Number to get additional technical data (performance data, nameplate data, dimension
print, connection diagram, etc.) The Alternate Rating Code is displayed along with
whether or not the design Passed or Failed. Click on the Alternate Rating Code to
get a definition of the code. The Alternate Rating Codes are shown below:
IEC Alternate Rating Codes:
- 0 = Parent Design
- 1 = Design N
- 2 = Design # & LRT does not meet IEC Design N Limits
- 3 = Design # & BDT does not meet IEC Design N Limits
- 4 = Design # & LRT & BDT do not meet IEC Design N Limits
- 5 = Design # & Slip does not meet IEC Design N Limits
- 6 = Design # & LRT & Slip do not meet IEC Design N Limits
- 7 = Design # & BDT & Slip do not meet IEC Design N Limits
- 8 = Design # & LRT & BDT & Slip do not meet IEC Design N Limits
- 9 = Design # & LRT & LRA do not meet IEC Design N Limits
- 10 = Design # & BDT & LRA do not meet IEC Design N Limits
- 11 = Design # & LRT & BDT & LRA do not meet IEC Design N Limits
- 12 = Design # & Slip & LRA do not meet IEC Design N Limits
- 13 = Design # & LRT & Slip & LRA do not meet IEC Design N Limits
- 14 = Design # & BDT & Slip & LRA do not meet IEC Design N Limits
- 15 = Design # & LRT & BDT & Slip & LRA do not meet IEC Design N Limits
- 16 = Design A & LRA Exceeds IEC Design N Limits
- 17 = Design # & LRT is Below Minimum IEC Design N Limits
- 18 = Design # & BDT is Below Minimum Design Limits
- 101 = Exceeds Design Limits
- 102 = Temperature Rise Exceeds UL Limits
- 103 = Temperature Rise Exceeds Insulation Class Limits
- 104 = LRA Exceeds Design N Limits
- 105 = LRT is Below Design N Limits
- 106 = BDT is Below Design N Limits
- 107 = LRT & BDT is Below Design N Limits
- 108 = Slip Exceeds Design N Limits
- 109 = Safe Stall Time does not meet Design Limits
- 110 = Magnetic Flux does not meet Design Limits
NEMA Alternate Rating Codes:
- 0 = Parent Design
- 1 = Design B
- 2 = Design # & LRT does not meet NEMA Design B Limits
- 3 = Design # & BDT does not meet NEMA Design B Limits
- 4 = Design # & LRT & BDT do not meet NEMA Design B Limits
- 5 = Design # & Slip does not meet NEMA Design B Limits
- 6 = Design # & LRT & Slip do not meet NEMA Design B Limits
- 7 = Design # & BDT & Slip do not meet NEMA Design B Limits
- 8 = Design # & LRT & BDT & Slip do not meet NEMA Design B Limits
- 9 = Design # & LRT & LRA do not meet NEMA Design B Limits
- 10 = Design # & BDT & LRA do not meet NEMA Design B Limits
- 11 = Design # & LRT & BDT & LRA do not meet NEMA Design B Limits
- 12 = Design # & Slip & LRA do not meet NEMA Design B Limits
- 13 = Design # & LRT & Slip & LRA do not meet NEMA Design B Limits
- 14 = Design # & BDT & Slip & LRA do not meet NEMA Design B Limits
- 15 = Design # & LRT & BDT & Slip & LRA do not meet NEMA Design B Limits
- 16 = Design A & LRA Exceeds NEMA Design B Limits
- 17 = Design # & LRT is Below Minimum NEMA Design B Limits
- 18 = Design # & BDT is Below Minimum Design Limits
- 101 = Exceeds Design Limits
- 102 = Temperature Rise Exceeds UL Limits
- 103 = Temperature Rise Exceeds Insulation Class Limits
- 104 = LRA Exceeds Design B Limits
- 105 = LRT is Below Design B Limits
- 106 = BDT is Below Design B Limits
- 107 = LRT & BDT is Below Design B Limits
- 108 = Slip Exceeds Design B Limits
- 109 = Safe Stall Time does not meet Design Limits
- 110 = Magnetic Flux does not meet Design Limits
Alternate Rating Details Page:
Catalog Number, Frame Size & Enclosure are returned along with
links to view Connection Diagrams, Dimension Prints, Operations Manual, Product Data
Sheet, Performance Data & Nameplate Data.
Adobe (PDF) Documents:
To view Connection Diagrams, Dimension Prints, and Operation
Manuals, Adobe Acrobat
Reader must first be installed. Adobe Acrobat Reader is software that allows you to
view pdf (portable document format) documents. To print Connection Diagrams, Dimension
Prints, or Operation Manuals, use the Abobe Reader print facility, not the browser print
function. The quality of print is enhanced if printed within Adobe Reader.
Server Error:
The Server Error page will be displayed due to one of the following reasons:
- One of the selection values entered was invalid.
Solution: Enter the query
with different values.
- The query was too large.
Solution: Limit the selection criteria to return
fewer records.
- Your connection to the database server was lost.
Solution: Return to the first
page of the Web Catalog by clicking on the U.S. Motors' logos at the top of
the page.
- The web server is not responding.
Solution: Check your internet connection. If you can access other sites,
try your query again. If you believe the problem is with U.S. Motors' server, please
contact us via E-mail
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