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滑線總負載計算電流IG的計算
發(fā)布時間: 2013-02-27 點擊次數(shù): 1223次滑線總負載計算電流IG的計算
PGK:計算總共率 [KW] UN:額定電壓 [V] COSφ:功率因數(shù)
(4)根據(jù)總負載計算電流IG,選擇滑線型號,然后對電壓降進行校核。
1)環(huán)境溫度變化對電壓降的影響
我們提供的相關(guān)技術(shù)參數(shù)時環(huán)境溫度為40℃時的結(jié)果,若工作環(huán)境溫度超過40℃時,電壓降應(yīng)按下式進行換算△U:電壓降 [V] △U40℃:40℃時的電壓降 [V] UN:額定電壓 [V]
Fv:電壓熱變系數(shù),其值見下表:導(dǎo)體溫度70℃75℃80℃85℃90℃95℃100℃105℃fv鋼導(dǎo)體≤200A0.9010.8860.8720.8580.8450.8320.8200.907>200A0.9080.8940.8800.8670.8540.8420.9300.818鋁導(dǎo)體≤500A0.9650.9600.9540.9480.9430.9370.9320.926>500~800A0.9760.9820.9680.9640.9600.9560.9520.948>800A0.9850.9830.9790.9760.9720.9690.9670.962銅導(dǎo)體≤500A0.9590.9520.9450.9380.9320.9250.9190.912>500~800A0.9830.9800.9770.9740.9710.9680.9650.961>800~1250A0.9930.9930.9910.9900.9890.9870.9860.985>1250A0.9980.9970.9960.9960.9950.9940.9920.991- 下一篇:對滑線進行選型計算
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