Medium-voltage pin type insulator ANSI 55-4

Medium-voltage pin type insulator ANSI 55-4

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


Diameter (D): 5 19/32 Inches (142mm)

Height (H): 4 3/8 Inches (111mm)

Leakage Distance: 9 Inches (229mm)

Dry Arcing Distance: 5 Inches (127mm)

Min Pin Height: 5 Inches (127mm)

Mechanical Values:

Cantilever Strength: 3,000Pounds (13.6kN)

Electrical Values:

Typical Application Voltage: 13.2kV

Low Frequency Dry Flashover Voltage: 65kV

Low Frequency Wet Flashover Voltage: 35kV

Critical Impulse Flashover Voltage, Positive: 105kV

Critical Impulse Flashover Voltage, Negative: 130kV

Low Frequency Puncture Voltage: 95kV

Radio Influence Voltage Data:

Test Voltage RMS to Ground: 10kV

Maximum RIV at 1000 kHz: 50μV

Packing and Shipping Data:

Net Weight, Approximate: 1.8kg