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РЗА • Просмотр темы - Диф.защита 7UT613 и РЕТОМ - 51

Диф.защита 7UT613 и РЕТОМ - 51

Диф.защита 7UT613 и РЕТОМ - 51

Сообщение Nexus » Ср сен 14, 2011 16:07

Help :?:
как снять характеристику Idiff/In =F(Irest/In) c помощью одного РЕТОМа-51.
Nexus
 

Диф.защита 7UT613 и РЕТОМ - 51

Сообщение Nexus » Пт сен 16, 2011 07:19

народ помогите!!!
никто не работал что ли с РЕТОМ - 51?
не могу проверить диф. защиту 7UT613, точнее снять характеристику зон торможения и отключения
Nexus
 

Диф.защита 7UT613 и РЕТОМ - 51

Сообщение ДмитрийЛипецк » Чт дек 22, 2011 11:52

Я брал 2 Ретом 51. С одного подавал в сотрону ВН, с другого в сторону НН. Выставлял токи, чтоб был Idif=0, потом начинал одним из ретомов поворачивать токи (на обоих ретомах синхронизация с сетью должна быть активирована) до срабатывания.
Потом увеличивал амплитуду токов, тем самым увеличивая Iторм, и опять крутил до срабатывания.
Так снял несколько точек.
Для больших токов торможения диф ток создавал не углом, а изменением амплитуды одной из сторон. Но до диф отсечки так и не дошел: ретом начал отключаться из-за перегрузки.
ДмитрийЛипецк
 


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