Single girder cranes are available as both top running, or under running where the crane runway beams hang from the existing facility overhead structure.
Velimir Lackovic Electric power can be transferred either by underground cables or overhead lines. The underground cables are not commonly used for power transmission for two main reasons.
Power is transferred over long distances to load centers and the installation costs for underground transmission is significant.
Secondly, electric power needs to be transferred at high voltages for economic reasons, and it is very difficult to achieve adequate insulation to withstand such higher pressures. As a consequence, power transfer over long distances is accomplished by using overhead lines.
With the increase in power demand and consequent rise in voltage levels, power transmission by overhead lines has assumed considerable importance. However, an overhead line is subjected to various weather conditions and other external interferences. This requires the use of adequate mechanical safety factors to ensure the continuity of line operation.
Typically, the strength of the line must be able to withstand the most severe weather conditions likely to occur. This course focuses on the different aspects of mechanical design of overhead lines.
It is suitable for engineers with a desire to understand basic elements of the overhead line, its design principles, calculation methods and factors that affect overall current carrying capacity.
Upon successful completion engineers will be able to address important overhead line design considerations and independently complete different calculations. Once you complete your course review, you need to take a multiple-choice quiz consisting of forty-five 45 questions to earn 8 PDH credits.
This course is intended to provide you with the following specific knowledge and skills: Main components of overhead lines Insulator types Corona effect and factors that affect it Sag in overhead lines Factors that affect sag in overhead lines Download the Course to review and begin earning your PDH credits.
Before purchasing this course, please confirm that your state Board is listed above. Our goal is to provide you with the most efficient and cost-effective way to fulfill your mandatory PDH requirements.
Get started in minutes; all of our online courses are available immediately after purchasing. Our system allows you to get those last minute hours when you need them the most!A Guide Book for the Inspection, Classification and Restoration of Damaged or Worn Conductors.
OVERHEAD DISTRIBUTION LINE REPAIR MANUAL.
A non-bottom-bearing, wedge-style expansion anchor for use in solid concrete or grout-filled masonry. The Wedge-All wedge anchor is available in carbon steel with zinc or mechanically galvanized coating, as well as Types / and Type stainless steel.
Facility designers tip: If you're designing a new facility, and crane hook height is the primary factor driving the height of the building, consider going with Double Girder cranes.
The double girder design gives much better hook height. Depending on the size of the building, the small increase in crane cost may be far less than the cost of a taller building.
A bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving arteensevilla.com design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may prevent a motion by controlling the vectors of normal forces that bear on the moving parts.
Since the time of the first automobile, I-Beam overhead conveyors have brought increased efficiency to production lines.
Using this proven design, Pacline has developed the PAC-BEAM™ I-Beam conveyor with improved components for low cost conveying in a wide range of applications. focuses on the different aspects of mechanical design of overhead lines. Overhead Line Main Components.
An overhead line may be used to or distribute electrictransfer power. The proper overhead line operation depends to a big extent upon its mechanical design. While.