ANSI 55-1 Pin Type Porcelain Insulator
Dimensional data
Spacing (S) | 3 1/2 inch 90 mm |
Diameter (D) | 3 1/4 inch 82.6 mm |
Leakage distance (C/D) | 4 inch 102 mm |
Dry arcing distance： | 2 1/4 inch 57 mm |
| Minimum pin height: | 4 inch 102 mm |
Mechanical values
Combined M&E strength: | 3,000 lb 13.3 kN |
Electrical Values
Low frequency dry flashover voltage: | 35 kV |
Low frequency wet flashover voltage: | 20 kV |
Critical impulse flashover voltage, positive: | 50 kV |
Critical impulse flashover voltage, negative: | 70 kV |
Low frequency puncture voltage: | 50 kV |
Type application voltage: | 7.2 kV |
Radio-influence Voltage
RIV test voltage rms to ground Maximum RIV at 1000 kHz | 5 kV 50 μV |
Corona visual lest P/C | 18/22 KV |
Packing information
Approx. net weight per unit | 1.2 lb 0.54 kg |
Industry Standard(s)
Manufactured according to ANSI C29.5
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