Medium-voltage pin type insulator ANSI 55-3

Medium-voltage pin type insulator ANSI 55-3

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


Diameter (D): 4 3/4 Inches (121mm)

Height (H): 3 3/4 Inches (95mm)

Leakage Distance: 7 Inches (178mm)

Dry Arcing Distance: 4 1/2 Inches (114mm)

Min Pin Height: 5 Inches (127mm)

Mechanical Values:

Cantilever Strength: 2,500Pounds (11.4kN)

Electrical Values:

Typical Application Voltage: 11.5kV

Low Frequency Dry Flashover Voltage: 55kV

Low Frequency Wet Flashover Voltage: 30kV

Critical Impulse Flashover Voltage, Positive: 90kV

Critical Impulse Flashover Voltage, Negative: 110kV

Low Frequency Puncture Voltage: 90kV

Radio Influence Voltage Data:

Test Voltage RMS to Ground: 10kV

Maximum RIV at 1000 kHz: 50μV

Packing and Shipping Data:

Net Weight, Approximate: 1.1kg