DC spark-over voltage (100V/s) V Impulse spark-over voltage (1KV/us) V Impulse discharge current (10/1000us 300times) A Impulse discharge current (8/20us 10times) KA AC discharge current (50Hz 1s 5times) Holdover voltage V Insulation resistance Ω Capacitance pF Transerse voltage duration ns 3R-75AF2 75±25% ≤600 50 10 10 / ≥1010 <1.5 ≤200 3R-90AF2 90±25% ≤600 50 10 10 / ≥1010 <1.5 ≤200 3R-150AF2 150±20% ≤700 100 10 10 80 ≥1010 <1 ≤200 3R-230AF2 230 +30-40 Ⅰ ≤800 100 10 10 135 ≥1010 <1 ≤200 Ⅱ ≤500 / 3R-350AF2 350±20% Ⅰ ≤800 100 10 10 135 ≥1010 <1 ≤200 Ⅱ ≤600 / 3R-470AF2 470±20% Ⅰ ≤900 100 10 10 135 ≥1010 <1 ≤200 Ⅱ ≤700 / 3R-600AF2 600±20% ≤1200 100 10 10 135 ≥1010 <1 ≤200