ANSI 55-3 Pin Type Porcelain Insulator is designed for 11.5kV overhead distribution power lines. Constructed with high-strength industrial porcelain, it delivers reliable cantilever mechanical performance, comprehensive electrical insulation and strong weather resistance, widely used for pole-mounted power grids in urban and rural areas.
Attributes
ANSI Class: 55-3
Leakage Distance: 7 in (178 mm)
Dry Arcing Distance: 4 1/2 in (114 mm)
Minimum Pin Height: 5 in (127 mm)
Cantilever Strength: 2,500 lbs (11.4 kN)
Application Voltage: 11.5 kV
Low Frequency Dry Flashover Voltage: 55 kV
Low Frequency Wet Flashover Voltage: 30 kV
Positive Critical Impulse Flashover Voltage: 90 kV
Negative Critical Impulse Flashover Voltage: 110 kV
Low Frequency Puncture Voltage: 90 kV
Test Voltage RMS to Ground: 10 kV
Max RIV at 1000kHz: 50 μV
ANSI Class: 55-3
Leakage Distance: 7 in (178 mm)
Dry Arcing Distance: 4 1/2 in (114 mm)
Minimum Pin Height: 5 in (127 mm)
Cantilever Strength: 2,500 lbs (11.4 kN)
Application Voltage: 11.5 kV
Low Frequency Dry Flashover Voltage: 55 kV
Low Frequency Wet Flashover Voltage: 30 kV
Positive Critical Impulse Flashover Voltage: 90 kV
Negative Critical Impulse Flashover Voltage: 110 kV
Low Frequency Puncture Voltage: 90 kV
Test Voltage RMS to Ground: 10 kV
Max RIV at 1000kHz: 50 μV
Compliance Standard: ANSI C29.4, IEC, CE, ISO
