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Student & Learning Zone - City & Guilds
(C&G 203 ?) Motor & Other Questions..
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<blockquote data-quote="Jono Pashley" data-source="post: 55351" data-attributes="member: 1564"><p>11. Power = V X I X pf</p><p></p><p>Power = 400 x 50 x 0.8</p><p></p><p>Power = 16KW</p><p></p><p>Unless it specifically mentions three phase id be unsure of using the three phase calc.</p><p></p><p>12. using Xc Formula of 1 / 2 x crbvcurbvubruvbruvb x f x c</p><p></p><p>im getting 3183.1 ohms, which im unsure of so can someone else check that.</p><p></p><p>16. Sync Speed = Frequency / Pairs of Poles</p><p></p><p>Sync Speed = 50/2</p><p></p><p>Convert to rpm = sync speed x 60 = 1500</p><p></p><p>4% of 1500 is 60</p><p></p><p>1500-60 = 1440rpm</p></blockquote><p></p>
[QUOTE="Jono Pashley, post: 55351, member: 1564"] 11. Power = V X I X pf Power = 400 x 50 x 0.8 Power = 16KW Unless it specifically mentions three phase id be unsure of using the three phase calc. 12. using Xc Formula of 1 / 2 x crbvcurbvubruvbruvb x f x c im getting 3183.1 ohms, which im unsure of so can someone else check that. 16. Sync Speed = Frequency / Pairs of Poles Sync Speed = 50/2 Convert to rpm = sync speed x 60 = 1500 4% of 1500 is 60 1500-60 = 1440rpm [/QUOTE]
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(C&G 203 ?) Motor & Other Questions..
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