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【多选题】
一般情况下,动力和照明宜共用变压器,属于下列( )情况时,可设专用变压器。
A.
、单相负荷很小时,可设单相变压器
B.
在IT系统的低压电网中,照明负荷应设专用变压器
C.
冲击性负荷(试验设备、电焊机群及大型电焊设备等)较大,严重影响电能质量时,可设专用变压器
D.
照明负荷较大,或动力和照明共用变压器由于负荷变动引起的电压闪变或电压升高,严重影响照明质量及灯泡寿命时,可设照明专用变压器
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B.
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C.
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D.
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A.
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B.
900-2500次
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D.
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A.
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100-510次
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