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Do-It-Yourself (DIY) Question & Answer Forum
Three Phase or Single Phase for instruments
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<blockquote data-quote="roys" data-source="post: 545041" data-attributes="member: 5044"><p>If 3 phase is available then use it, the 3 phase motor is generally more efficient and more reliable than single phase motors. A 3 phase motor is just 3 sets (or multiples of) coils of wire, this creates the rotating magnetic field which a motor requires to rotate.</p><p>A single phase motor due to the fact that it is only single phase has to use other method of creating a rotating magnetic field, to do this they tend to use capacitors ( other methods are available) and often centrifugal switches, more bits = less reliable, also with capacitor life anything over 10 years is a bonus.</p><p>In simple terms more bang for your buck with 3 phase machines. However Infrastructure, protection and control is more than involved with 3 phase.</p><p>This is a very rough and simplistic overview.</p></blockquote><p></p>
[QUOTE="roys, post: 545041, member: 5044"] If 3 phase is available then use it, the 3 phase motor is generally more efficient and more reliable than single phase motors. A 3 phase motor is just 3 sets (or multiples of) coils of wire, this creates the rotating magnetic field which a motor requires to rotate. A single phase motor due to the fact that it is only single phase has to use other method of creating a rotating magnetic field, to do this they tend to use capacitors ( other methods are available) and often centrifugal switches, more bits = less reliable, also with capacitor life anything over 10 years is a bonus. In simple terms more bang for your buck with 3 phase machines. However Infrastructure, protection and control is more than involved with 3 phase. This is a very rough and simplistic overview. [/QUOTE]
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Three Phase or Single Phase for instruments
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