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中頻變壓器的容量有多大,中頻變壓器的額定容量標準

發表時間:2021-04-29 17:49【 閱讀量:-查看手機網址
掃一掃!中頻變壓器的容量有多大,中頻變壓器的額定容量標準掃一掃!

很多中頻電壓互感器(也稱中頻變壓器)采用鐵氧體材料作為鐵芯,這種變壓器在中頻頻率較高的情況下使用尚可,但用在頻率較低的中頻電源上就無法保證其有效參數了。例如一臺標注4000Hz的中頻變壓器,用在1000Hz的中頻電源上,很快就被燒毀。因此選擇中頻變壓器時盡可能選用硅鋼片鐵芯的,鐵氧體變壓器則一定要按照中頻電源的實際運行頻率來選擇。


對標準變壓器,我國現在變壓器的額定容量是按照R10優先系數,即按10的開10次方的倍數來計算,從500—1000KVA變壓器容量有:500KVA、630KVA、800KVA、1000KVA四種。變壓器國家標準容量(單位KVA)為:30,50,63,80,100,125,160,200,250,315,400,500,630,800,1000,1250,1600,2000。變壓器容量的選擇對綜合投資效益有很大影響。變壓器容量選得過大,出現"大馬拉小車"現象,不僅一次性投資大,空載損耗也大。變壓器容量選得過小,變壓器負載損耗增大,經濟上不合理,技術上也不可行。

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