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contacto de apertura
el., meas.inst.	ملامس فصل
el.tract.	تلامس فصل
PSP	ملامس ب
contacto de apertura desaconsejado; para relés elementales
PSP	تلامس وصل للمرحّلات البسيطة

contacto de apertura: 2 phrases in 1 subject

Power system protection

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