surge arrester t87 - a90x 3 - electrode - arrester ordering code: B88069X5870B502 ab e / ab pm issue 01, 29.11.2002 page 1 of 2 dc spark - over voltage 1) 2) 4) 90 20 v % impulse spark - over voltage 4) at 100 v/s - for 99 % of measured values - typical values of distribution at 1 kv/s - for 99 % of measured values - typical values of distribution < 400 < 300 < 450 < 350 v v v v nominal impulse discharge current (wave 8/20 s) 5) single impulse discharge current (wave 8/20 s) 5) 10 15 ka ka nominal alternating discharge current (50 hz, 1 s) 5) alternating discharge current (50 hz, 9 cycles) 5) 10 40 a a insulat ion resistance at 50 v dc 4) > 10 g w capacitance at 1 mhz 4) < 1.5 pf transverse delay time 3) < 0.2 s arc voltage at 1 a glow to arc transition current glow voltage ~ 10 ~ 1 ~ 60 v a v weight ~ 2 g operation and storage temperature - 40 ... +90 c c limatic category (iec 60068 - 1) 40/ 90/ 21 marking, red 90 yy o 90 - nominal voltage yy - year of production o - non radioactive 1) at delivery aql 0.65 level ii, din iso 2859 2) i n ionized mode 3) test according to itu - t rec. k.12 4) tip or ring ele ctrode to center electrode 5) total current through center electrode, half value through tip respectively ring electrode. terms in accordance with itu - t rec. k.12 and din 57845/vde0845
surge arrester t87 - a90x 3 - electrode - arrester o rdering code: B88069X5870B502 epcos ag 2002. reproduction, publication and dissemination of this data sheet, enclosures hereto and the information contained therein without epcos' prior express consent is prohibited. purchase orders ar e subject to the general conditions for the supply of products and services of the electrical and electronics industry recommended by the zvei (german electrical and electronic manufacturers' associ a tion), unless otherwise agreed. ab e / ab pm issue 01, 2 9.11.2002 page 2 of 2 not to scale dimensions in mm non controlled document
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