如果某建筑有中央空调系统,那么大楼至少应选2台变压器。
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选择变压器容量时,变压器的负载率赢空载()。
A. 75%~85%
B. 60%~70%
C. 55%
D. 50%
高层主体建筑内的变电所应选不然或难燃型变压器。
A. 对
B. 错
单台变压器的容量选择,不宜大于2000KVA。
A. 对
B. 错
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