Why does the magnetic flux in a CT core decrease with connected load?

AI Thread Summary
The discussion centers on the differences in magnetic flux behavior between Current Transformers (CTs) and Voltage Transformers (VTs) under load conditions. Unlike VTs, where the magnetic flux remains relatively constant due to the primary voltage source, CTs experience a reduction in flux when a burden is connected because the secondary amp-turns counteract the primary current's effect. The primary current in a CT establishes the core flux, while in a VT, it is the primary voltage that does so. The conversation also touches on the impact of insulation leakage on flux, noting that while it has a minimal effect, it can slightly diminish the amp-turns contributing to core flux. Overall, the key distinction lies in how the primary current and voltage influence the magnetic flux in each type of transformer.
  • #51
Thank you very much for correction me, my means of "linkage EMF" is the EMF due to linkage MMF.:approve:
 
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  • #52

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