Cable Impedance and Unequal Sharing between Parallel Transformers
Cable or busduct impedance between each trans…
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Bibliothèque technique
Articles techniques pratiques sur la sélection, la conception et la fabrication des noyaux de transformateurs.
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Parallel Transformers with Different X/R Ratios
Different X/R ratios can produce different re…
Lire l’article completCirculating Current from Tap Mismatch in Parallel Transformers
A tap mismatch creates a secondary no-load vo…
Lire l’article completUnequal Transformer kVA Ratings in Parallel: Predicting Load Sharing
Unequal kVA transformers can share load accep…
Lire l’article completParallel Transformers: A Pre-Connection Compatibility Checklist
Before transformers are paralleled, confirm r…
Lire l’article completGrounding Transformer plus Auxiliary Winding: Combining Functions Carefully
Combining a grounding transformer with an aux…
Lire l’article completGrounding Study Inputs for a Transformer-Fed LV System
A transformer-fed low-voltage grounding study…
Lire l’article completEarthing Switches and Transformer Neutral Disconnects: Define the Scope
Earthing switches and neutral disconnects def…
Lire l’article completNeutral Insulation Levels: Uniform versus Nonuniform Winding Insulation
Neutral insulation may be uniform with the li…
Lire l’article completTransformer Zero-Sequence Impedance: What to Request from the Manufacturer
Zero-sequence impedance is not interchangeabl…
Lire l’article completTwo Neutral Grounding Points: Circulating-Current Questions
Two intentional neutral grounding points can …
Lire l’article completUngrounded Systems: Transformer Questions for Ground-Fault Studies
An ungrounded system does not mean ground fau…
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