单项选择题
专门用于风机、泵类负载调速的变频器规定其过载能力一般为()。
A.180%、0.5s
B.150%、60s
C.120%、60s
D.180%、60s
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单项选择题
A.180%、0.5s
B.150%、60s
C.120%、60s
D.180%、60s
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