... -alarm J -lightning counternormal discharge current In(kA)Maxi continuous working voltage (V~)combined method(see sheet 2 ... ,30, 40,50, 60 ,70kA2.2.2 According to maxi continuous working voltage Uc:65,180V-,150,300,345,385 ... composite type(see table 2)2.4 Basic parameter·Maxi continuous working voltage Uc 65,180V-,150,300,345 ... 1.5 ,1.8,2.0 ,2.2,2.5kV·Maxi discharge current(8/20µs) Imax 15 ,25 ,40 ...