CAP AND PIN TYPE SUSPENSION INSULATORS
TOUGHENED GLASS SUSPENSION INSULATORS
The following line post insulators comply with the ANSI Standard. The glaze colors of the insulators are brown or light gray. The dimension of neck for 57-1, 57-2, 57-3 is in accordance with "F". The dimension of neck for 57-4, 57-5 is in accordance with "N".
Dimensions:
Diameter (D): 7 1/2 Inches (190mm)
Height (H): 20 Inches (508mm)
Leakage Distance: 45 Inches (1145mm)
Dry Arcing Distance: 17 1/4 Inches (438mm)
Mechanical Values:
Cantilever Strength: 2,800Pounds (12.5kN)
Cantilever Strength Routine Test: 1,000Pounds (5kN)
Electrical Values:
Typical Application Voltage: 66kV
Low Frequency Dry Flashover Voltage: 175kV
Low Frequency Wet Flashover Voltage: 150kV
Critical Impulse Flashover Voltage, Positive: 290kV
Critical Impulse Flashover Voltage, Negative: 380kV
Radio Influence Voltage Data:
Test Voltage RMS to Ground: 44kV
Maximum RIV at 1000 kHz: 200μV
Packing and Shipping Data:
Net Weight, Approximate: 18.0kg
