Product Structure
Power Line Insulators
ANSI 57-3 C29.6 Electrical Ceramic Line Post Insulators Porcelain 33kv-45kv Insulator
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Product Overview
PRODUCT OVERVIEW
ANSI 57-3 Line Post Porcelain Insulator complies with ANSI/NEMA C29.7 standard, designed for 45kV overhead distribution lines in North American power grids. It features stable cantilever mechanical capacity, long leakage distance and reliable anti-pollution insulation performance for pole vertical installation.
Core Technical Parameters
Executive Standard: ANSI C29.7, IEC, CE, ISO
Leakage Distance: 29 in (737 mm)
Dry Arcing Distance: 12 1/4 in (311 mm)
Cantilever Strength: 2,800 lbs (12.5 kN)
Routine Cantilever Test Load: 1,000 lbs (5 kN)
Rated Application Voltage: 45 kV
Low Frequency Dry Flashover Voltage: 125 kV
Low Frequency Wet Flashover Voltage: 100 kV
Positive Critical Impulse Flashover Voltage: 210 kV
Negative Critical Impulse Flashover Voltage: 260 kV
RMS Test Voltage to Ground: 30 kV
Max RIV at 1000kHz: 200 μV
Executive Standard: ANSI C29.7, IEC, CE, ISO
Leakage Distance: 29 in (737 mm)
Dry Arcing Distance: 12 1/4 in (311 mm)
Cantilever Strength: 2,800 lbs (12.5 kN)
Routine Cantilever Test Load: 1,000 lbs (5 kN)
Rated Application Voltage: 45 kV
Low Frequency Dry Flashover Voltage: 125 kV
Low Frequency Wet Flashover Voltage: 100 kV
Positive Critical Impulse Flashover Voltage: 210 kV
Negative Critical Impulse Flashover Voltage: 260 kV
RMS Test Voltage to Ground: 30 kV
Max RIV at 1000kHz: 200 μV
Product Features
- • 12.5kN constant cantilever load to resist lateral wire tension and wind load
- • 737mm long leakage distance for outstanding anti-pollution performance
- • Excellent dry, wet and lightning impulse insulation capacity
- • Standard ANSI C29.7 design for 45kV North American power projects
- • High-density porcelain shell anti-UV, salt fog and acid rain aging
- • Stable radio interference performance to avoid signal disturbance
Performance & Dimensions
Application Area
• 45kV overhead medium-high voltage distribution power lines
• Vertical mounting on concrete and steel utility poles
• Coastal, industrial and medium-heavy pollution overhead power grids
• Rural, municipal and industrial power transmission infrastructure
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