Трансформатор 1941 года

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Трансформатор 1941 года

Сообщение User » 31 янв 2013, 13:05

Подскажите что за трансформатор. По бирке на корпусе ВН/НН -6300/400 вольт.Разве делали в 41 году трансформаторы на 0,4 кВ по низкой стороне? Группа У/У-12.По высокой стороне подходит 3х фазное напряжение 6,3кВ. На низкой стороне нулевой ввод не используется. Межфазное напряжение на низкой стороне 220 вольт. При замерах с землей на фазах "а" и "б" 220 вольт. Земля с фазой "с" показывает отсутствие напряжения. Возможно ли что трансформатор переделали и сделали двухфазным, а где была фаза "с" сейчас нулевой вывод трансформатора.
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Re: Трансформатор 1941 года

Сообщение support » 31 янв 2013, 13:06

User писал(а):Подскажите что за трансформатор. По бирке на корпусе ВН/НН -6300/400 вольт.Разве делали в 41 году трансформаторы на 0,4 кВ по низкой стороне? Группа У/У-12.По высокой стороне подходит 3х фазное напряжение 6,3кВ. На низкой стороне нулевой ввод не используется. Межфазное напряжение на низкой стороне 220 вольт. При замерах с землей на фазах "а" и "б" 220 вольт. Земля с фазой "с" показывает отсутствие напряжения. Возможно ли что трансформатор переделали и сделали двухфазным, а где была фаза "с" сейчас нулевой вывод трансформатора.

Да ! Трансформаторы делали 3-х фазными.
Нулевой провод не обязательно присутствует , а вот фаза С -скорее всего обрыв от старости .
Нулевой провод не могли сделать на фазу "С" -ерунда получается .
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