The main features of the apparatus are focus on small volume , light weight , no iron core , no magnetic saturation and no ferreous resonance , moreover , related advantages such as the large range of transient and frequency response , excellent electrical magnetic compatibility , oil - free configuration , reliable insulation structure , are all the trends of current transformer in the future . meanwhile , it should agree with the future power gauge and digital , computer , automatic relay protection . it will meet the demand of digital power network 它具有體積小、重量輕;無鐵芯、不存在磁飽和與鐵磁諧振問題;動態(tài)響應(yīng)范圍大,頻率響應(yīng)寬;抗電磁干擾性能強;無油化結(jié)構(gòu)、絕緣可靠、價格低等優(yōu)點;是未來電流互感器發(fā)展的方向,是新一代電力數(shù)字網(wǎng)發(fā)展的需要,適應(yīng)電力計量和保護數(shù)字化、微機化和自動化發(fā)展的潮流。