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...
Power factor is the ratio between the real power (P in kW) and apparent power (S in kVA) drawn by an electrical load. The reactive power (Q in kVAr)...
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There are a lot of interesting two page type notes on various medium voltage topics – switchgear, circuit breakers, bus systems etc. It is on the Siemens...
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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...
How often installations are inspected is up to the owner of the installation, provided such durations do not exceed any regulatory maximums in force. ...
Power cables can basically be classified into earthed and unearthed cables, where earthed and unearthed refer to the application for which the cable is...
Motor starting and its associated problems are well-known to many people who have worked on large industrial processes. However, these things are, of course...
Problems on achieving maximum voltage drop within an installation come up often. Depending where you live, local regulations will have different limits...
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