Cable Impedance and Unequal Sharing between Parallel Transformers
Cable or busduct impedance between each trans…
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Parallel Transformers with Different X/R Ratios
Different X/R ratios can produce different re…
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A tap mismatch creates a secondary no-load vo…
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Unequal kVA transformers can share load accep…
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Before transformers are paralleled, confirm r…
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Combining a grounding transformer with an aux…
Leggi l'articolo completoGrounding Study Inputs for a Transformer-Fed LV System
A transformer-fed low-voltage grounding study…
Leggi l'articolo completoEarthing Switches and Transformer Neutral Disconnects: Define the Scope
Earthing switches and neutral disconnects def…
Leggi l'articolo completoNeutral Insulation Levels: Uniform versus Nonuniform Winding Insulation
Neutral insulation may be uniform with the li…
Leggi l'articolo completoTransformer Zero-Sequence Impedance: What to Request from the Manufacturer
Zero-sequence impedance is not interchangeabl…
Leggi l'articolo completoTwo Neutral Grounding Points: Circulating-Current Questions
Two intentional neutral grounding points can …
Leggi l'articolo completoUngrounded Systems: Transformer Questions for Ground-Fault Studies
An ungrounded system does not mean ground fau…
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