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| Class ANSI | Fig | Main Demensionin (mm) | leak-ageDist-ance in (mm) | Com-bined M & E Stre-ngth b(KN) | Mcebanical Impact Strenth in-1b(N-m) | Time Load Test Value1b (KN) | Average Flashover Voltage | Power Freq-uaency Punc-ture Voltage KV | Radio influence Voltage | |||||
| D(max) | F | Power Frequ-ency | Critcal Impulse | Test Volt-ageToGro-undKV | Max Riv At 1MHz V | |||||||||
| Dry kv | Wet kv | Positive kv | Nag-ative kv | |||||||||||
| 52-1 | 1 | 61/2(165) | 51/2(165) | 7(178) | 10000(44) | 45(5.0) | 6000(27) | 60 | 30 | 100 | 100 | 80 | 7.5 | 50 |
| 52-2 | 1 | 8(203) | 53/4(146) | 81/4(210) | 15000(67) | 50(5.5) | 10000(44) | 65 | 35 | 115 | 115 | 90 | 7.5 | 50 |
| 52-3 | 1 | 103/4(273) | 53/4(146) | 111/2(292) | 15000(67) | 5.5(6.0) | 10000(44) | 80 | 50 | 125 | 130 | 110 | 10 | 50 |
| 52-4 | 3 | 103/4(273) | 53/4(146) | 111/2(292) | 15000(67) | 5.5(6.0) | 10000(44) | 80 | 50 | 125 | 130 | 110 | 10 | 50 |
| 52-5 | 2 | 103/4(273) | 53/4(146) | 11(279) | 25000(111) | 60(7.0) | 15000(67) | 80 | 50 | 125 | 130 | 110 | 10 | 50 |
| 52-6 | 3 | 103/4(273) | 53/4(146) | 11(279) | 25000(111) | 60(7.0) | 15000(67) | 80 | 50 | 125 | 130 | 110 | 10 | 50 |
| 52-9 | 4 | 41/2(114) | 61/4(160) | 63/4(171) | 10000(44) | 45(5.0) | 6000(27) | 80 | 30 | 100 | 90 | 80 | 7.5 | 50 |
ANSI standard 52-3 Porcelain Disc Insulator