z80BL Series Nominal Nominal impulse impulse discharge discharge current current 8/20μ μ s 10/1000μ μs idi idi (KA) (A) Nominal Alternating discharge current at 50Hz, 1s ida (A) Nominal dc spark-over voltage Gas Discharge Tube dc spark-over voltage Impulse spark-over voltage at 1Kv/μ μs Vsdc (V) Vsdc (V) Vsi (V) 80B75L 75 60~90 ≦700 50 80B90L 90 72~108 ≦700 50 80B150L 150 120~180 ≦700 50 80B230L 230 184~276 ≦800 100 80B250L 250 200~300 ≦800 100 80B300L 300 240~360 ≦900 80B350L 350 280~420 ≦900 100 80B400L 400 320~480 ≦1000 100 80B420L 420 336~504 ≦1100 100 80B470L 470 376~564 ≦1100 100 80B600L 600 480~720 ≦1500 150 Part No. 10 100 10 Insulation resistance V (V) 100 Ris (Ω Ω) Capacitance at 1kHz C (Pf) 9 ≧10 ≦2 80BXXXL Series Series W3 W5 L3 L4 L5 80BL ψ8.0±0.3 14.6±0.5 ψ1.0±0.1 10.0±0.3 4.4±0.2