◆海拔高度不超過1000m，環(huán)境空氣溫度-40℃~+40℃
◆ 安裝場所無劇烈的機械振動、無有害氣體及蒸汽、無導電性及爆炸性塵埃
◆連續(xù)運行電壓1.0Un，長期過電壓zui高值不超過1.1Un
◆穩(wěn)態(tài)過電流（包括諧波電流）不超過1.43In
◆zui大允許容量不超過1.35Qn
◇Altitude lower than 1000m, anbiedt temperature-40℃~+40℃
◇No strong mech anical vobration at installing place. No corrosive gas, inductive dust, and inflammabie and explosive media in the anbient entiroment.
◇Continuous operating caltage is 1.0Un. the highest over-valtaeg value for long time operation will not exceed 1.1Un.
◇Steady-state over current（include harmonic current）will not exceed 1.43In.
◇The maxcapacity will not more than 1.35Qn.