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ANSI 55-2 Porcelain Pin Type Insulator
ANSI 55-2 Pin Type Ceramic/ Porcelain Insulator with Pin SpindleANSI 55-2 pin porcelain insulators are mainly used for medium voltage distribution lines.This is an insulator used in medium voltage distribution systems.The applicable rated voltage is usually 15kV and below, widely used in urban and rural overhead distribution lines for supporting and insulating wires on poles.
- Brand: QOCI
- Catalog ID: ANSI 55-2
- Type: Pin Insulator
- Material: Porcelain
- Place of Origin: Jiangxi
Dimensional data
Spacing (S) | 3 1/4 inch 83 mm |
Diameter (D) | 3 3/4 inch 95 mm |
Leakage distance (C/D) | 5 inch 127 mm |
Dry arcing distance: | 3 3/8 inch 86 mm |
| Minimum pin height: | 4 inch 102 mm |
Mechanical values
Combined M&E strength: | 2,500 lb 11.1 kN |
Electrical Values
Low frequency dry flashover voltage: | 45 kV |
Low frequency wet flashover voltage: | 25 kV |
Critical impulse flashover voltage, positive: | 70 kV |
Critical impulse flashover voltage, negative: | 85 kV |
Low frequency puncture voltage: | 70 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 | 1.4kg |
Carton Quantity | 15 |
Pallet Quantity | 840 |
Industry Standard(s)
Manufactured according to ANSI C29.5



