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ground_wall_insulation [2020/06/01 23:31]
stan_zurek [Ground wall insulation]
ground_wall_insulation [2020/07/04 19:53] (current)
stan_zurek
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 +====== Ground wall insulation ======
  
 +|< 100% >|
 +| //[[user/Stan Zurek]], **[[Ground wall insulation]]** , [[http://Encyclopedia-Magnetica.com|Encyclopedia-Magnetica.com]], {accessed @YEAR@-@MONTH@-@DAY@}// |
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 +{{page>insert/todo}}
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 +**Ground wall insulation** or **ground insulation** - the main [[electrical insulation]] between the [[winding|windings]] and the [[magnetic core]] of the [[stator]] in [[rotating machine|rotating machines]].[(Stone_et_al>[[http://google.com/books?isbn=9780471682899|Greg C. Stone, Edward A. Boulter, Ian Culbert, Hussein Dhirani, Electrical Insulation for Rotating Machines: Design, Evaluation, Aging, Testing, and Repair, IEEE Press Series on Power Engineering, John Wiley & Sons, 2004, ISBN 9780471682899, pp. 17-21]] )] 
 +
 +The ground wall insulation touches the inner side of the [[stator slot|stator slots]] and can be composed of several layers. 
 +
 +There is no ground wall insulation between the cage and magnetic core of a rotor in induction machines. However, in all rotating machines with rotor the windings also have to be insulated from the core.
 +
 +<WRAP clear></WRAP>
 +<box 30% left #f0f0f0>
 +Ground wall insulation in a motor with a [[random winding]] (drawing not to scale)
 +[[file/ground_wall_insulation_magnetica.png|{{ground_wall_insulation_magnetica.png}}]]
 +{{page>insert/by_SZ}}
 +</box>
 +
 +<box 30% left #f0f0f0>
 +Ground wall insulation in a small 3-phase motor with random winding
 +[[file/ground-wall_insulation_magnetica.jpg|{{ground-wall_insulation_magnetica.jpg}}]]
 +{{page>insert/by_SZ}}
 +</box>
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 +<box 30% left #f0f0f0>
 +Large 3-phase induction motor during repair, with prepared ground wall insulation 
 +[[file/ground_wall_insulation1_magnetica.jpg|{{ground_wall_insulation1_magnetica.jpg}}]]
 +{{page>insert/by_SZ}}
 +</box>
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 +<WRAP clear></WRAP>
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 +<box 60% left #f0f0f0>
 +Both windings on the rotor of a [[synchronous generator]] are insulated from their magnetic cores
 +[[file/synchronous_stator_magnetica.jpg|{{synchronous_stator_magnetica.jpg}}]]
 +{{page>insert/by_SZ}}
 +</box>
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 +<box 30% left #f0f0f0>
 +No ground wall insulation in a [[squirrel-cage rotor]] of an induction motor
 +[[file/double-cage_rotor.jpg|{{double-cage_rotor.jpg}}]]
 +{{page>insert/by_SZ}}
 +</box>
 +
 +
 +===== See also =====
 +  *[[turn insulation]]
 +  *[[coil insulation]]
 +  *[[slot]]
 +  *[[wedge]]
 +  *[[enamelled wire]]
 +  *[[Litz wire]]
 +  *[[continuously transposed conductor]] (CTC)
 +
 +===== References =====
 +~~REFNOTES~~
 +
 +{{tag> Ground_wall_insulation Counter}}

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