The porcelain pin insulator should comply with the following specs: 56-1
Main Dimensions:
D: 191mm
H: 146mm
Creepage Distance: 330mm
Low Freq. Puncture Voltage: 130kv
Power Freq. Flashover voltage Dry: 95kv
Wet: 60kv
Critical Impulse flashover voltage Positive: 150kv
Negative: 190kv
Cantilever Failing Load: 1134KN
Weight: 3.7kg
Porcelain Insulator