1.0Electrical Riddlehttps://electrical-riddle.com/enElectrical Riddlehttps://electrical-riddle.com/en- Electrical Riddlerich600338<blockquote class="wp-embedded-content" data-secret="0TK7Zn1fD0"><a href="https://electrical-riddle.com/en/forums/reply/1319/">Reply To: Protection Riddle No.13 – Setting of earth fault relay</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://electrical-riddle.com/en/forums/reply/1319/embed/#?secret=0TK7Zn1fD0" width="600" height="338" title="“Reply To: Protection Riddle No.13 – Setting of earth fault relay” — Electrical Riddle" data-secret="0TK7Zn1fD0" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script>
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Unfortunately, nowadays with our world information transmission system (internet), we usually neglect the basic conceptions and deep thinking about new problems. With more deep thinking, we can find that the mentioned evident equation (S = 1.73 VI) is not correct for zig-zag earthing transformers. Indeed, each leg of a grounding transformer carries one-third of the … Read More »