Surge Arrester 3-Electrode-Arrester T90-A90X Ordering code: B88069X5470C253 Preliminary data DC spark-over voltage 1) 2) 4) 90 ± 20 V % Impulse spark-over voltage 4) at 100 V/µs - for 99 % of measured values 6) - typical values of distribution 6) < 550 < 450 V V - for 99 % of measured values 6) - typical values of distribution 6) < 700 < 600 V V 5 kA Nominal alternating discharge current (50 Hz, 1 s) 5) 6) 5 A Insulation resistance at 50 Vdc 4) >1 GΩ Capacitance at 1 MHz 4) < 1.5 pF Transverse delay time 3) < 0.2 µs Arc voltage at 1 A Glow to arc transition current Glow voltage ~ 10 ~1 ~ 60 V A V Weight ~ 0.8 g Operation and storage temperature -40 ... +90 °C Climatic category (IEC 60068-1) 40/ 90/ 21 at 1 kV/µs Nominal impulse discharge current (wave 8/20 µs) 5) 6) Marking, blue 90 YY O 90 YY O - Nominal voltage - Year of production - Non radioactive 1) At delivery AQL 0.65 level II, DIN ISO 2859 In ionized mode 3) Test according to ITU-T Rec. K.12 4) Tip or ring electrode to center electrode 5) Total current through center electrode, half value through tip respectively ring electrode. 6) under test Terms in accordance with ITU-T Rec. K.12 and DIN 57845/VDE0845 2) AB E / AB PM Issue 02, 28.05.2002 Page 1 of 2 Surge Arrester 3-Electrode-Arrester T90-A90X Ordering code: B88069X5470C253 Preliminary data Not to scale Dimensions in mm Non controlled document 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 are 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' Association), unless otherwise agreed. AB E / AB PM Issue 02, 28.05.2002 Page 2 of 2