The electrical designers require knowing the following availability, efficiency and installation as a minimum in conjunction with functionally. One important point to always consider is that the manufacturer's data sheet this will be key, and consulting component manufacturer is often essential, to ensure that electrical designs can meet the grade for CE marking.
When designing any electrical system it is essential to consider the system lifecycle of all components and the maximum availability without detriment to the equipment. There are other various ways which will also increase availability; one such design would be thought the reduction of relays and replacement with solid state devices, as mechanical devices only withstand a maximum number of operations. There are many components on the market that will allow for more reliable switching.
Power quality is also an significant consideration and the machine directive on EMC is a good starting point as odd harmonics, not only decrease component lifecycle but cause in efficiencies and in sever cases can result in hot neutral's where usefully power is feed directly to ground.
At the electrical design stage system inefficiencies can also be eliminated, it is estimated that a poorly designed system can waste up to ten percent of the power consumed.
Looking at the switching frequencies will determine the best switching method, often this is only a guide at design stage and it is important to evaluate all systems for energy consumption on a regular basis.There are many components on the market that will allow for more reliable switching.
Inefficiencies can also be minimised by switching of components when required, a control relay and PIR (Person in Room) may be seen as unessential component but could save thousand over the product lifecycle.
To know more about Electrical design procedure, feel free to visit at http://www.mepdesignservices.com/electrical_services.php
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Steve Jack is a member at MEP Design Services, offering low cost and high quality electrical design services within a time bound.
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