Live support chatHow Ambient Conditions Impact the Rating of Electrical Equipment
In How Ambient Conditions Impact the Rating of Electrical Equipment, you'll learn ...
- How altitude, temperature and humidity affect electrical equipment ratings
- The types of electrical equipment that are impacted by ambient conditions
- How to calculate derating factors for transformers, motors, VFDs, generators and other equipment
Overview
Preview a portion of this course before purchasing it.
Credit: 1 PDH
Length: 19 pages
Electrical equipment which relies on air cooling is affected by the altitude, air temperature and humidity. This course provides the methodology for developing an estimate of rating factors for electrical equipment at various ambient conditions.
This course is not intended to replace or modify manufacturer's ratings or recommendations. Rather, the course provides guidance on estimating electrical equipment sizes for project cost and space requirements.
The course includes a spreadsheet that can be used to quickly estimate altitude rating factors for various types of electrical equipment.
Learning Objectives
Upon completion of this course, participants will be able to:
- Explain why air density affects the ability of air to remove heat.
- Describe how humidity affects the rating of electrical equipment.
- Explain how ambient conditions affect semiconductor cooling efficiency.
- Apply altitude-rating-factor rules of thumb for variable frequency drives.
- Describe how ambient conditions affect the ratings of transformers, motors, and circuit breakers.
- Determine altitude correction factors for the vertical clearance of high-voltage transmission lines.
Certificate of Completion
You will be able to immediately print a certificate of completion after passing a multiple-choice quiz consisting of 10 questions. PDH credits are not awarded until the course is completed and quiz is passed.
| This course is applicable to professional engineers in: | ||
| Alabama (P.E.) | Alaska (P.E.) | Arkansas (P.E.) |
| Delaware (P.E.) | District of Columbia (P.E.) | Florida (P.E. Area of Practice) |
| Georgia (P.E.) | Idaho (P.E.) | Illinois (P.E.) |
| Illinois (S.E.) | Indiana (P.E.) | Iowa (P.E.) |
| Kansas (P.E.) | Kentucky (P.E.) | Louisiana (P.E.) |
| Maine (P.E.) | Maryland (P.E.) | Michigan (P.E.) |
| Minnesota (P.E.) | Mississippi (P.E.) | Missouri (P.E.) |
| Montana (P.E.) | Nebraska (P.E.) | Nevada (P.E.) |
| New Hampshire (P.E.) | New Jersey (P.E.) | New Mexico (P.E.) |
| New York (P.E.) | North Carolina (P.E.) | North Dakota (P.E.) |
| Ohio (P.E. Self-Paced) | Oklahoma (P.E.) | Oregon (P.E.) |
| Pennsylvania (P.E.) | South Carolina (P.E.) | South Dakota (P.E.) |
| Tennessee (P.E.) | Texas (P.E.) | Utah (P.E.) |
| Vermont (P.E.) | Virginia (P.E.) | West Virginia (P.E.) |
| Wisconsin (P.E.) | Wyoming (P.E.) | |
Preview a portion of this course before purchasing it.
Credit: 1 PDH
Length: 19 pages
