U40  Standard suspension insulatorType:U40B/110Diameter D(mm):178Spacing H(mm):110Creepage L(mm):185Socket soupling(mm):11Mechanical failing load(kn):40Mechanical routine test(kn):20Wet power frequency withstand voltage(kv):25Dry lightning impulse withstand voltage(kv):50Impulse puncture voltage(p.u.):2.8Power frequency puncture voltge(kv):90Rodio influence voltage10kv,1MHz(uV):50Corona visual test(kv):18/22Power frequency electric arc voltage:0.12s/20kaNet weight per unit(Kg):2.1also proved the glass insulators LXY 70. ,LXY1-70,LXY-100,LXY-120,LXY3-160,LXY3-210,LXY-240,LXY3-300,LXHY4-70,LXHY-70,LXHY5-70,LXHY4-100,LXHY4-120. etc.