Pin Post Insulator 56/57-2

Pin Post Insulator 56/57-2

The following line post insulators comply with the ANSI Standard. The glaze colors of the insulators are brown or light gray.


Diameter (D): 6 11/16 Inches (170mm)

Height (H): 13 1/4 Inches (336mm)

Leakage Distance: 21 Inches (534mm)

Dry Arcing Distance: 10 1/2 Inches (267mm)

Mechanical Values:

Cantilever Strength: 2,800Pounds (12.5kN)

Cantilever Strength Routine Test: 1,000Pounds (5kN)

Electrical Values:

Typical Application Voltage: 25kV

Low Frequency Dry Flashover Voltage: 110kV

Low Frequency Wet Flashover Voltage: 85kV

Critical Impulse Flashover Voltage, Positive: 180kV

Critical Impulse Flashover Voltage, Negative: 205kV

Radio Influence Voltage Data:

Test Voltage RMS to Ground: 22kV

Maximum RIV at 1000 kHz: 100μV

Packing and Shipping Data

Net Weight, Approximate: 9.5kg