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The dangers of transformer core multipoint earthing

by:Transmart     2021-01-21
The harm of transformer core multipoint earthing - 2019 03 - 30 15:05:37 ( 1) After formation multipoint earthing transformer, can produce eddy current in iron core, transformer iron loss increase, the core of local overheating. ( 2) Multipoint earthing serious and long time have not been processing, also can produce transformer oil and winding overheating phenomenon, make oil paper insulation aging, can lead to core between laminated insulation aging and fall off, then cause more severe iron core overheating, iron core is destroyed. ( 3) Long time multipoint earthing, local core overheating will cause transformer oil degradation, serious when produce combustible gas, gas relay action. ( 4) Core overheating will make transformer ontology in the body of the wooden block and clamp carbide. ( 5) Severe burn out can make multipoint earthing transformer grounding line, transformer lost point grounding, consequence is unimaginable. ( 6) Multipoint earthing can cause transformer partial discharge phenomenon is generated.
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