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ANSI 55-3 Pin Type Porcelain Insulator
ANSI 55-3 Low and Medium Voltage Pin Type Porcelain Insulator.Supports low to medium voltage lines.Capable of withstanding physical stress and environmental factors, prolonging service life.Designed to perform under varities of weather conditions.Ideal for both urban and rural power distribution networks.
- Brand: QOCI
- Catalog ID: ANSI 55-3
- Type: Pin Insulator
- Material: Porcelain
- Place of Origin: Jiangxi
Dimensional data
Spacing (S) | 3 3/4 inch 95.3 mm |
Diameter (D) | 4 4/5 inch 120.6 mm |
Leakage distance (C/D) | 7 inch 178 mm |
Dry arcing distance: | 4 1/2 inch 114 mm |
| Minimum pin height: | 5 inch 127 mm |
Mechanical values
Combined M&E strength: | 2,500 lb 11.1 kN |
Electrical Values
Low frequency dry flashover voltage: | 55 kV |
Low frequency wet flashover voltage: | 30 kV |
Critical impulse flashover voltage, positive: | 90 kV |
Critical impulse flashover voltage, negative: | 110 kV |
Low frequency puncture voltage: | 90 kV |
Type application voltage: | 11.5 kV |
Radio-influence Voltage
RIV test voltage rms to ground Maximum RIV at 1000 kHz | 10 kV 50 μV |
Corona visual lest P/C | 18/22 KV |
Packing information
Approx. net weight per unit | 1.08kg 2.4 lb |
Pallet Quantity | 810 |
Industry Standard(s)
Manufactured according to ANSI C29.5



