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China U70BLA 146/380/365 Glass Insulator Supplier, Suppliers
China U70BLA 146/380/365 Glass Insulator Supplier, Suppliers
China U70BLA 146/380/365 Glass Insulator Supplier, Suppliers
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China U70BLA 146/380/365 Glass Insulator Supplier, Suppliers
China U70BLA 146/380/365 Glass Insulator Supplier, Suppliers
China U70BLA 146/380/365 Glass Insulator Supplier, Suppliers

China U70BLA 146/380/365 Glass Insulator Supplier, Suppliers

The main purpose of aerodynamic glass insulators is to provide insulation and mechanical support for high-voltage transmission lines.

U70AD Glass Insulators.jpg

Their specially designed shape effectively reduces wind resistance and prevents the formation of continuous water films during rainy and windy conditions, thereby improving pollution flashover voltage and wind resistance.

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Product Description

Product Identification

IEC Standard: U70BLA

U
Disc Suspension Insulator
70
70kN Load Capacity
B
Ball & Socket Type
L
146mm Height
A
Aerodynamic Type
U70BLA Product Components
Dimensional Data
Spacing (S) 146mm
Diameter (D) 380mm
Creepage Distance (L) 365mm
Socket Coupling 16mm
Technical Specifications
Mechanical Values
Mechanical Failing Load 70kN
Mechanical Residual Strength 56kN
Electrical Values
Wet Power Frequency Voltage 45kV
Dry Lightning Impulse Voltage 90kV
Power Frequency Puncture Voltage 130kV
Radio-Influence & Arc Performance
RIV Test Voltage (rms to ground) 10 kV
Maximum RIV at 1000 kHz 50 μV
Corona Visual Test P/C 18/22 KV
Power Frequency Electric Arc 0.12s / 20kA
Packing & Logistics
Net Weight 5.3kg
Carton Quantity 2 pcs
Packaging Method
Industry Standards

Manufactured in accordance with IEC60383-1:1993 MOD / GB/T1001.1

Aerodynamic Type Glass Insulator Standard Drawing
Frequently Asked Questions
What does the U70BLA designation represent?
The "U" stands for Disc Suspension Insulator, "70" indicates a 70kN mechanical failing load, "B" signifies a Ball and Socket type, "L" refers to the longer steel pin achieving a 146mm height, and "A" denotes the Aerodynamic design.
What are the primary dimensions of this insulator?
The insulator has a spacing of 146mm, a diameter of 380mm, and a total creepage distance of 365mm.
What is the mechanical strength of the U70BLA?
It features a mechanical failing load of 70kN and maintains a mechanical residual strength of 56kN.
Which electrical standards does this product follow?
It is manufactured in compliance with IEC60383-1:1993 and GB/T1001.1 standards, ensuring high reliability in electrical performance.
What are the electrical withstand voltage ratings?
The wet power frequency withstand voltage is 45kV, and the dry lightning impulse withstand voltage is 90kV.
How is the product packaged for delivery?
The insulators are packed 2 pieces per carton. Each unit has a net weight of approximately 5.3kg.

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