Pin Post Insulator 56/57-3

Pin Post Insulator 56/57-3

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): 15 Inches (381mm)

Leakage Distance: 27 1/2 Inches (699mm)

Dry Arcing Distance: 14 Inches (356mm)

Mechanical Values:

Cantilever Strength: 2,800Pounds (12.5kN)

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

Electrical Values:

Typical Application Voltage: 30kV

Low Frequency Dry Flashover Voltage: 120kV

Low Frequency Wet Flashover Voltage: 85kV

Critical Impulse Flashover Voltage, Positive: 210kV

Critical Impulse Flashover Voltage, Negative: 230kV

Radio Influence Voltage Data:

Test Voltage RMS to Ground: 30kV

Maximum RIV at 1000 kHz: 200μV

Packing and Shipping Data

Net Weight, Approximate: 12.8kg