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Three phase systems are derived from three separate windings, either connected in delta or star (wye). Each winding can be treated separately, leading...
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IEC 61439 'Low-voltage switchgear and controlgear assemblies', specifies standard arrangements of switchboard (call forms of internal separation). The...
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Electrical notes are a collaborative collection of electrical engineering information and educational material. Any registered user can add content. ...
The widely used United Sates standard ANSI/IEEE C37.2 'Electrical Power System Device Function Numbers, Acronyms, and Contact Designations' deals with...
The mobile phone was born in 1973. They were the size of a brick and weighed a couple of kg, making them difficult to fit into your pocket. At a few thousand...
I've been considering a blog on the 110 or 230 Volt issue for a while. While browsing the Internet I came across a great summary by Borat over at engineering...
Anyone specifying or using electric motors should have a basic understanding how the insulation is related to temperature. Three classes of insulation...