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Home > Standard Type > Wholesale U120BS(127/255/320) Glass Insulator Manufacturer, Supplier
Wholesale U120BS(127/255/320) Glass Insulator Manufacturer, Supplier
Wholesale U120BS(127/255/320) Glass Insulator Manufacturer, Supplier
Wholesale U120BS(127/255/320) Glass Insulator Manufacturer, Supplier
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Wholesale U120BS(127/255/320) Glass Insulator Manufacturer, Supplier
Wholesale U120BS(127/255/320) Glass Insulator Manufacturer, Supplier
Wholesale U120BS(127/255/320) Glass Insulator Manufacturer, Supplier

Wholesale U120BS(127/255/320) Glass Insulator Manufacturer, Supplier

  • Disk type suspended glass insulators are used for insulation and fixing wires in high-voltage overhead transmission and distribution lines;
  • Generally assembled into insulator strings for use on lines of different voltage levels;
  • Ordinary insulators are suitable for general areas;
  • Appropriately increasing the number of insulator pieces can improve the pollution flashover performance.

U120B disc glass insulator.jpg

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Product Description

■ Product Information
IEC Standard: U120BS
U
Disc Suspension Insulator
120
Mechanical failing load of 120kN
B
Ball And Socket Type
S
Short steel pin，Assembled to achieve a product structural height of 127mm.
Technical Drawing
■ Dimensional Data
Spacing (S) 127mm
Diameter (D) 255mm
Creepage Distance (L) 320mm
Socket Coupling 16mm
■ Mechanical & Electrical Values
Mechanical Failing Load 120kN
Mechanical Residual Strength 96kN
Wet Power Frequency Withstand Voltage 40kV
Dry Lightning Impulse Withstand Voltage 100kV
Power Frequency Puncture Voltage 130kV
■ Radio-influence Voltage & Arc Data
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 Voltage 0.12s/20kA
■ Packing Information
Net Weight 4.0kg
Carton Quantity 5pcs / 6pcs
Packing 5pcs

5pcs Packing

Packing Side View

5pcs Packing View

Packing 6pcs

6pcs Packing

Packing Unit

6pcs Packing View

■ Industry Standards

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

Product Compliance
Frequently Asked Questions
What does the U120BS designation stand for?
"U" denotes a Disc Suspension Insulator, "120" represents a 120kN mechanical failing load, "B" indicates a Ball and Socket type coupling, and "S" refers to the short steel pin design.
What is the creepage distance of this insulator?
The U120BS insulator features a creepage distance of 320mm, suitable for standard electrical insulation requirements.
What are the electrical withstand capabilities?
It has a wet power frequency withstand voltage of 40kV, a dry lightning impulse withstand voltage of 100kV, and a power frequency puncture voltage of 130kV.
What standard is followed during manufacturing?
The products are manufactured in strict accordance with IEC60383-1:1993 and GB/T1001.1 standards.
How are these insulators typically packed?
The insulators are typically packed in cartons containing either 5 pieces or 6 pieces, with a net weight of approximately 4.0kg per unit.
What is the mechanical strength rating?
The rated mechanical failing load is 120kN, with a mechanical residual strength of 96kN.

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