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Home > Standard Type > High-Quality 100KN U100BL Suspension Glass insulators Ball and socket type Manufacturer, Supplier
High-Quality 100KN U100BL Suspension Glass insulators Ball and socket type Manufacturer, Supplier
High-Quality 100KN U100BL Suspension Glass insulators Ball and socket type Manufacturer, Supplier
High-Quality 100KN U100BL Suspension Glass insulators Ball and socket type Manufacturer, Supplier
High-Quality 100KN U100BL Suspension Glass insulators Ball and socket type Manufacturer, Supplier
High-Quality 100KN U100BL Suspension Glass insulators Ball and socket type Manufacturer, Supplier
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High-Quality 100KN U100BL Suspension Glass insulators Ball and socket type Manufacturer, Supplier
High-Quality 100KN U100BL Suspension Glass insulators Ball and socket type Manufacturer, Supplier
High-Quality 100KN U100BL Suspension Glass insulators Ball and socket type Manufacturer, Supplier
High-Quality 100KN U100BL Suspension Glass insulators Ball and socket type Manufacturer, Supplier
High-Quality 100KN U100BL Suspension Glass insulators Ball and socket type Manufacturer, Supplier

High-Quality 100KN U100BL Suspension Glass insulators Ball and socket type Manufacturer, Supplier

U100B glass insulator has excellent electrical performance and mechanical strength. Its high insulation performance can effectively prevent current leakage, strong weather resistance, and is not easily affected by temperature changes and ultraviolet radiation. It can maintain stable insulation effect even after long-term use. In addition, the glass insulator has smooth surface, is not easy to accumulate dirt, and has good self-cleaning property, which reduces the maintenance demand. At the same time, it has a long service life and high anti-aging capability, and is suitable for the harsh environment of high-voltage transmission lines.

Hot Selling Durable U100bl Wedge Lock Type for Electrical Safety Glass Insulator

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Product Description

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Product Information

U100BL insulator
  • Model: U100BL
  • U: Refers To Disc Suspension Insulator
  • 100: Indicates a rated Mechanical failing load of 100kN
  • B: For Ball And Socket Type
  • L: Stands For Long Steel Foot
  • 146: Height of the insulator structure is 146mm (also available in 127mm).
  • 255: Diameter of the insulator disc is 255mm (other options: 280mm, 300mm, 320mm, 380mm, 420mm).
  • 320: Creepage distance of the insulator is 320mm (other options: 400mm, 450mm, 550mm).
  • Type: Standard profile Toughened Suspension Type
  • Rated mechanical load: 100kn (approx. 10 tons)
  • Purpose: Insulation support for medium and high voltage transmission lines and substation equipment; stable under various climates.

• Model compliant with IEC60383-1:1993 / GB/T1001.1

• Connection structure compliant with GB/T4056-2008 (IEC60120:1984) and BS 3288 part III.

• Locking pin options: W-pin or R-pin (W-pin used for U100BL by default).

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Product Drawing

U100BL drawing
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Technical Parameters

IEC Designation Unit U100BS/127 U100BL/146
Mechanical failing loadkn100100
Diameter Dmm255255
Height Hmm127146
Creepage distance Lmm320320
Socket couplingmm1616
Wet power frequency withstand voltagekv4040
Dry lightning impulse withstand voltagekv100100
Power frequency puncture voltagekv130130
Radio interference voltage (10kV 1MHz)μv5050
Corona visual testkv18/2218/22
Power frequency electric arc voltageka0.12s/20kA0.12s/20kA
Impulse puncture voltageP.U2.82.8
Net weight per unitkg44
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Suspension Insulator Components

Structural diagram

Suspension insulators consist of:

  • Dielectric: Toughened glass shaped for specific environmental functionality.
  • Cap: Hot-dip galvanized nodular or ductile malleable cast iron.
  • Pin: Hot-dip galvanized forged steel.
  • Assembly: Cap and pin are secured to the glass using high-strength aluminous cement.

The insulator features a stainless steel or phosphor bronze locking device (split pin). Pins can also be protected with an anti-corrosion zinc sleeve for heavy pollution environments.

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Glass Insulator Shell Cross-section

Under long-term electrical stress, contaminants can trigger local arcs. Our design provides sufficient creep distance to disperse electric field strength, reducing local discharge risk and extending service life.

Creepage distance
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Detailed Photos

U100BL Detail 1 U100BL Detail 2 U100BL Detail 3
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Frequently Asked Questions

Q1: What does the "U100BL" model designation mean?
"U" refers to a disc suspension insulator, "100" indicates a rated mechanical failing load of 100kN, "B" signifies a ball and socket coupling, and "L" stands for a long steel foot.
Q2: Which international standards do these insulators comply with?
They are manufactured in accordance with IEC60383-1, GB/T1001.1 for performance, and GB/T4056 (IEC60120) and BS 3288 part III for connection structures.
Q3: What is the creepage distance of the U100BL?
The standard creepage distance for this model is 320mm, designed to reduce the risk of local discharge and extend the life of the insulator.
Q4: What materials are used in the construction?
The insulator consists of a toughened glass dielectric, a hot-dip galvanized cast iron cap, and a forged steel pin, all assembled with high-grade aluminous cement.
Q5: Can I choose the type of locking pin?
Yes, depending on your requirements, the locking pin can be either a W-pin or an R-pin. If no specific instruction is provided, a W-pin is standard for the U100BL.
Q6: Is this insulator suitable for high-pollution areas?
Yes. For lines in heavily polluted environments, we highly recommend the version with a sacrificial zinc sleeve on the pin to provide enhanced anti-corrosion protection.

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