The following tables provide quick order of magnitude fault levels for a a range of typical low voltage situations.
When sizing cables nearly, everyone uses some form of software. This ranges from homespun spreadsheets to complex network analyses software. Each has its...
This post is quick introduction and overview to different railway electrification voltages used in answer to a question sent in via email. While there...
We have had the Wiki with us for a long time now, but at last I have decided to say bye bye – more details on why below.
One of the requirements to ensuring that everything works is to have equipment selected, manufactured and verified [tested] to IEC standards. Not all equipment...
Collection of links to various places with useful motor information. I’ll try and return to the page every now and again to update it with any motor notes...
This morning I was explaining how differential protection works to a junior engineer. To give him something to read I opened up the NPAG (Network Protection...
IEC 61439 'Low-voltage switchgear and controlgear assemblies', specifies standard arrangements of switchboard (call forms of internal separation). The...
GE's latest thinking on product manufacturing is he Shingijutsu philosophy or Lean production system. They have started applying this at the Louisville...
Insulation on a motor prevents interconnection of windings and the winding to earth. When looking at motors, it is important to understand how the insulation...
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