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Home > Double -Shed Type > High-Quality U210 High Voltage Cap and Pin Type Anti-Fog Glass Insulator Isolator Toughened Double Shed Glass Electric Insulator Manufacturers, Suppliers
High-Quality U210 High Voltage Cap and Pin Type Anti-Fog Glass Insulator Isolator Toughened Double Shed Glass Electric Insulator Manufacturers, Suppliers
High-Quality U210 High Voltage Cap and Pin Type Anti-Fog Glass Insulator Isolator Toughened Double Shed Glass Electric Insulator Manufacturers, Suppliers
High-Quality U210 High Voltage Cap and Pin Type Anti-Fog Glass Insulator Isolator Toughened Double Shed Glass Electric Insulator Manufacturers, Suppliers
High-Quality U210 High Voltage Cap and Pin Type Anti-Fog Glass Insulator Isolator Toughened Double Shed Glass Electric Insulator Manufacturers, Suppliers
High-Quality U210 High Voltage Cap and Pin Type Anti-Fog Glass Insulator Isolator Toughened Double Shed Glass Electric Insulator Manufacturers, Suppliers
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High-Quality U210 High Voltage Cap and Pin Type Anti-Fog Glass Insulator Isolator Toughened Double Shed Glass Electric Insulator Manufacturers, Suppliers
High-Quality U210 High Voltage Cap and Pin Type Anti-Fog Glass Insulator Isolator Toughened Double Shed Glass Electric Insulator Manufacturers, Suppliers
High-Quality U210 High Voltage Cap and Pin Type Anti-Fog Glass Insulator Isolator Toughened Double Shed Glass Electric Insulator Manufacturers, Suppliers
High-Quality U210 High Voltage Cap and Pin Type Anti-Fog Glass Insulator Isolator Toughened Double Shed Glass Electric Insulator Manufacturers, Suppliers
High-Quality U210 High Voltage Cap and Pin Type Anti-Fog Glass Insulator Isolator Toughened Double Shed Glass Electric Insulator Manufacturers, Suppliers

High-Quality U210 High Voltage Cap and Pin Type Anti-Fog Glass Insulator Isolator Toughened Double Shed Glass Electric Insulator Manufacturers, Suppliers

210kN IEC Standard Electrical Glass Insulator U210BLD (UG210B/340/170/550D) Double-Shed Type Glass Insulators for High Voltage Lines

U210 High Voltage Cap and Pin Type Anti-Fog Glass Insulator Isolator Toughened Double Shed Glass Electric Insulator

Two-Winged Glass Suspension Insulators PSD-210 B Type

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Product Description

Product Information
U210BLD Glass Insulator

Model: U210BLD

  • U - Refers To Disc Suspension Insulator
  • 210 - Indicates a rated Mechanical failing load of 210kN
  • B - For Ball And Socket Type
  • L - For Long steel feet
  • D - For Double Shed profile glass Insulator
  • 340 - Diameter of the insulator disc: 340mm
  • 170 - Height of the insulator structure: 170mm
  • 550 - Creepage distance of the insulator: 550mm
  • Type: External shed profile Toughened Suspension Type
  • Rated mechanical load: 210kN (approx. 21 tons)
  • Purpose: Primarily used in high-voltage transmission lines in areas with heavy pollution or humid, rainy conditions. The double-shed design effectively enhances anti-pollution flashover performance.
Product Drawing
Product drawing
Product Parameters
IEC Designation U210BD U210BD1
Type Reference - UG210B170/450D UG210B170/550D
Mechanical failing load kN 210 210
Nominal Diameter D mm 300 340
Nominal Spacing P mm 170 170
Creepage distance L mm 450 550
Socket coupling mm 20/24 20/24
Wet power frequency withstand voltage kv 45 50
Dry lightning impulse withstand voltage kv 120 135
Power frequency puncture voltage kv 130 130
Radio interference voltage (10kV 1MHz) μv 50 50
Corona visual test P/C kv 18/22 18/22
Power frequency electric arc voltage ka 0.12s/20ka 0.12s/20ka
Impulse puncture voltage P.U 2.8 2.8
Net weight per unit kg 7.5 9.5
Suspension Insulator Components
Insulator Components

Suspension insulators consist of the following elements:

  • Dielectric: Made of toughened glass with specific properties to withstand environmental conditions.
  • Cap: Hot-dip galvanized nodular or ductile malleable cast iron.
  • Pin: Hot-dip galvanized forged steel pin.
  • Assembly: Assembled using high-quality aluminous cement for thermomechanical strength.
  • Locking Device: Stainless steel or phosphor bronze locking pin (split pin) for secure coupling.
  • Anti-corrosion: Zinc sleeves (sacrificial anodes) can be added to pins for heavy pollution environments.
Glass Insulator Shell Cross-section

Under long-term electrical stress, contaminants can trigger local arcs. The optimized shell design provides sufficient creepage distance to disperse electric field strength, reducing the risk of local discharge and extending service life.

Cross-section Detail
Product Display
Insulator Display 1
Insulator Display 2
Frequently Asked Questions
What does the "210" in the U210BLD model represent?
The "210" indicates that the insulator has a rated mechanical failing load of 210kN, which is approximately equivalent to 21 tons of force.
What are the advantages of the double-shed profile?
The double-shed design increases the creepage distance and improves the anti-pollution flashover performance, making it ideal for humid, rainy, or heavily polluted environments.
What materials are used for the cap and pin?
The cap is made from hot-dip galvanized nodular or ductile malleable cast iron, and the pin is made from hot-dip galvanized forged steel for maximum durability.
Which international standards do these insulators follow?
These products comply with IEC60383-1:1993, GB/T1001.1, and the connection structures meet IEC60120 and BS 3288 part III standards.
What type of locking pin is used for the U210B model?
By default, an R-pin locking device is used for the U210B model unless special instructions specify a W-pin.
Can these insulators be used in coastal or high-corrosion areas?
Yes, for high-pollution or coastal areas, we recommend using an anti-corrosion zinc sleeve (sacrificial anode) on the pin to extend the product's lifespan.

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