glass suspension insulator U300B
Dimensions
Nominal Diameter (mm):320
Nominal Creepage Distance (mm):485
Nominal Structure Height (mm):195
Description
Mechanical Values
Tensile Load Test (KN):150
Rated Mechanical Failing Load (kN):300
Electrical Values
Lightning Impulse Withstand Voltage (kV):125
Power Frequency Dry Flashover Voltage (kV):55
Power Frequency Wet Flashover Voltage (kV):130
Radio Interference Voltage at 10kV, 1MHz (μV):50
⚙️ Applications:
Overhead power transmission lines (35kV–1000kV)
High-voltage substations
Coastal, industrial, and desert zones with high pollution levels
Replacement of aged porcelain or composite insulators
Our glass insulators are widely exported and trusted by utilities worldwide for their long service life, low maintenance cost, and dependable performance.
China Glass Insulator Supplier
Glass insulator products:
are of high quality and exported to dozens of countries. Our products have product quality certification reports and meet ISO9001 quality standards.







