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...
When sizing cables, the heat generated by losses within any sheath or armour need to be evaluated. When significant, it becomes a factor to be considered...
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...
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...
Cable insulation is used to provide electrical separation between conductors of a cable. During the historical development of cables, numerous types...
Per unit fault calculations is a method whereby system impedances and quantities are normalised across different voltage levels to a common base. By removing...
If you want to check a circuit is dead (not live), you should always use the three point method. First check a known live circuit, then check the dead...
The widely used United Sates standard ANSI/IEEE C37.2 'Electrical Power System Device Function Numbers, Acronyms, and Contact Designations' deals with...
The standard aims to consolidate AC and traction voltages within the industry and defines the following bands: band 1 - A.C. systems 100 V to 1...
Current transformers (CTs) are used to convert high level currents to a smaller more reasonable level for use as inputs to protection relays and metering...
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