Porcelain Ball and Socket Type Suspension Insulators ANSI 52-3

Mechanical Values
Combined M&E Strength: 15,000Pounds (67kN)
Impact Strength: 55Inch-pounds (6.2Nm)
Routine Proof Test Load: 7,500Pounds (33.3kN)
Time Load Test Value: 10,000Pounds (44.5kN)
Maximum Working Load: 7,500Pounds (33.3kN)

Electrical Values
Low-frequency Dry Flashover Voltage: 80kV
Low-frequency Wet Flashover Voltage: 50kV
Critical Impulse Flashover Voltage, Positive: 125kV
Critical Impulse Flashover Voltage, Negative: 130kV
Low Frequency Puncture Voltage: 110kV
RIV Test Voltage to Ground: 10kV
Maximum RIV at 1,000kHz: 50μV