A PROTECTION SYSTEM FOR MEDIUM-VOLTAGE POTENTIAL TRANSFORMERS
摘要
<p>The subject of the invention is a protecting system for medium-voltage potential transformers, finding application in the attenuation of ferroresonant states occurring in at least one of three potential transformers in a three-phase medium-voltage network. The system according to the invention features an element with a threshold voltage and current characteristic (1) and a thermal fuse (2), which are connected in series between an attenuating resistor (R1) and the output of the auxiliary secondary winding of one of the single-phase transformers.</p>
申请公布号
WO2005008859(A1)
申请公布日期
2005.01.27
申请号
WO2004PL00053
申请日期
2004.07.08
申请人
ABB SP. Z O. O.;PIASECKI, WOJCIECH;FLORKOWSKI, MAREK;LUTO, MARIUSZ;MAHONEN, PENTTI
发明人
PIASECKI, WOJCIECH;FLORKOWSKI, MAREK;LUTO, MARIUSZ;MAHONEN, PENTTI