c.對(duì)于有功功率變送器,除另有標(biāo)志外,cos 的標(biāo)稱使用范圍極限:
感性功率因數(shù)(電流滯后) 1≥cos ≥0
容性功率因數(shù)(電流超前) 1≥sin ≥0
d.無(wú)功功率變送器,除另有標(biāo)志外,sin的標(biāo)稱使用范圍極限:
感性無(wú)功因數(shù)(電流滯后) 1≥sin ≥0
容性無(wú)功因數(shù)(電流超前) 1≥sin ≥0。
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