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James Watson CEng, FIET

@EngineerLondon • 6,086 subscribers

Engineer. Historian. Beer-Drinker. Publican's Friend. Hi-Fi Anorak. Technocrat. Patriot. Improving Husband. Feminist. “The Attenborough of the Relay Room”

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When we energise a transformer, the initial current is very high for a few cycles and rich in harmonics. This current sets up the working flux in the core, and settles to a very small magnetising current. The initial surge is known as “in rush” current and sounds like this 👇🏻🔊

When we energise a transformer, the initial current is very high for a few cycles and rich in harmonics. This current sets up the working flux in the core, and settles to a very small magnetising current. The initial surge is known as “in rush” current and sounds like this 👇🏻🔊

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BUT, BUT, BUT…. Just bury it underground. Not as simple as that… Part 1 👇🏻
2:19
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BUT, BUT, BUT…. Just bury it underground. Not as simple as that… Part 1 👇🏻

James Watson CEng, FIET

143,509 views • 2 years ago

Went into a shop Saw 3 phase Slushies with a phase roll 🟨🟦🟥 One sometimes sees this phase roll on the HV or LV side of grid transformers in the London area Shop keeper didn’t want a lecture 👨🏻‍🏫 But he had one anyway 😆 And he needs to unpick the roll and sort out the slip
0:36
EngineerLondon's profile picture

Went into a shop Saw 3 phase Slushies with a phase roll 🟨🟦🟥 One sometimes sees this phase roll on the HV or LV side of grid transformers in the London area Shop keeper didn’t want a lecture 👨🏻‍🏫 But he had one anyway 😆 And he needs to unpick the roll and sort out the slip

James Watson CEng, FIET

27,459 views • 1 year ago

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