57-21瓷&陶瓷员额的绝缘体为你好

Class ANSI 57-21 57-22 57-23 57-24 57-25 57-1S 57-1L 57-2S 57-2L 57-3S 57-3L 57-4S 57-4L 57-5S 57-5L Creepage Distance(mm) 356 559 737 1015 1145 356 559 737 1015 1145 Dry Arcing Distance(mm) 165 241 311 368 438 165 241 311 368 438 Cantilever Strength(KN) 12.5 12.5 12.5 12.5 12.5 12.5 12.5 12.5 12.5 12.5 Low Frequency Dry Flashover(KV) 80 110 125 150 175 80 110 125 150 175 Low Frequency Wet Flashover(KV) 70 100 115 135 160 60 85 100 125 150 Critical Impulse Flashover.Pos(KV) 130 180 210 255 290 130 180 210 255 290 Critical Impulse Flashover.Neg(KV) 155 205 260 340 380 155 205 260 340 380 Test Voltage to Ground(KV) 15 22 30 44 44 15 22 30 44 44 Maximum RIV at 1000 KHZ(uV) 100 100 200 200 200 100 100 200 200 200 Class ANSI 57-11 57-12 57-13 57-14 57-15 Creepage Distance(mm) 356 559 737 1015 1145 Dry Arcing Distance(mm) 165 241 311 368 438 Cantilever Strength(KN) 12.5 12.5 12.5 12.5 12.5 Low Frequency Dry Flashover(KV) 80 110 125 150 175 Low Frequency Wet Flashover(KV) 60 85 100 125 150 Critical Impulse Flashover.Pos(KV) 130 180 210 255 290 Critical Impulse Flashover.Neg(KV) 155 205 260 340 380 Test Voltage to Ground(KV) 15 22 30 44 44 Maximum RIV at 1000 KHZ(uV) 100 100 200 200 200 We can produceporcelain post insulatoraccording with customers' drawing. With best quality and reasonable price. According IEC, AS, ANSI,BS,DIN,standards with grey, brown and white glaze.