Porcelain High-voltage Insulator (Low & Medium Voltage Pin Type Insulators )

Main dimensions and standand particul arsANSI Class Main Dimension in (mm) Creepage Distance in (mm) Min.Pin length in (mm) Cantilever Strength 1b (Kn) Average flashover voltage Power Frequency Puncture Voltage KV Radio influence voltage Power Frequency Critical Impulse Test Voltage to Ground KV Max RIV at 1 mHz D H h Dry Kv Wet Kv Positive Kv Negative Kv 55-1 31/4(83) 31/2(89) 13/4(44) 4(102) 4(102) 3000(13) 35 20 50 70 50 5 2500/50 55-2 33/4(95) 31/4(83) 31/2(38) 5(127) 4(102) 2500(11) 50/45 25 75/70 95/85 70 5 2500/50 55-3 43/4(121) 33/4(95) 31/2(38) 7(178) 5(127) 2500(11) 65/55 35/30 100/90 130/110 90 10 5500/50 55-4 51/2(140) 43/8(111) 13/4(44) 9(229) 5(127) 3000(13) 70/65 40/35 110/105 140/130 95 10 5500/50 55-5 7(178) 47/8(124) 2(51) 12(305) 6(125) 3000(13) 85/80 45 140/130 170/150 115 15 8000/100

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