Pergunta de entrevista da empresa Pirelli
What precautions must be taken ?when working with current ?transformer? Why? ?
Resposta da entrevista
Sigiloso
11 de jul. de 2012
the secondary of the ct must never ?be opened when the primary circuit is ?energized. if it is necessary to ?disconnect an instrument while the ?circuit is energized the secondary of ?the c.t. must be shorted, otherwise ?the potential of the secondary may ?reach dangerous values causing ?damage of the c.t. but by short ?circuiting of the secondary damage ?is avoided.?