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Home > Anti-Pollution Type > Wholesale U300 High Voltage Cap and Pin Type Anti-FogToughened Glass Electric Insulator Supplier, Suppliers
Wholesale U300 High Voltage Cap and Pin Type Anti-FogToughened Glass Electric Insulator Supplier, Suppliers
Wholesale U300 High Voltage Cap and Pin Type Anti-FogToughened Glass Electric Insulator Supplier, Suppliers
Wholesale U300 High Voltage Cap and Pin Type Anti-FogToughened Glass Electric Insulator Supplier, Suppliers
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Wholesale U300 High Voltage Cap and Pin Type Anti-FogToughened Glass Electric Insulator Supplier, Suppliers
Wholesale U300 High Voltage Cap and Pin Type Anti-FogToughened Glass Electric Insulator Supplier, Suppliers
Wholesale U300 High Voltage Cap and Pin Type Anti-FogToughened Glass Electric Insulator Supplier, Suppliers

Wholesale U300 High Voltage Cap and Pin Type Anti-FogToughened Glass Electric Insulator Supplier, Suppliers

High Voltage Line Toughened Glass Suspension Insulator 300 kN Anti-Pollution IEC Standard Isolators Toughened Glass Disc

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Product Description

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Product Information

U300BP Glass Insulator

Model: U300BP

  • U: Refers To Disc Suspension Insulator
  • 300: Indicates a rated Mechanical failing load of 300kN
  • B: For Ball And Socket Type
  • P: For Anti-Pollution type glass Insulator
  • 380: Diameter of the insulator disc is 380mm (other options: 340mm, 390mm).
  • 195: Height of the insulator structure is 195mm.
  • 635: Creepage distance of the insulator is 635mm (other options: 550mm, 620mm).
  • Type: Anti-Pollution Profile Toughened Suspension Type
  • Rated mechanical load: 300kn (about 30 tons)
  • Purpose: Insulation support for medium and high voltage transmission lines and substation equipment.
  • Standards: IEC60383-1:1993, MOD / GB/T1001.1
  • Connection: GB/T4056-2008 (IEC60120:1984, MOD) and BS 3288 part lll.
  • Locking Pin: Available in W-pin or R-pin (Default: R-pin for U300BP).
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Product Drawing

Technical Drawing
P

Product Parameters

Designation Unit U300BP U300BP1 U300BP2
QOCI Type - UG300B195/635H UG300B195/690H UG300B195/550H
Mechanical failing load kN 300 300 300
Nominal Diameter D mm 380 390 340
Nominal Spacing P mm 195 195 195
Creepage distance L mm 635 690 550
Socket coupling mm 24 24 24
Wet power frequency withstand voltage kv 60 60 55
Dry lightning impulse withstand voltage kv 155 155 140
Power frequency puncture voltage kv 130 130 130
Radio interference voltage(10kV 1MHz) µv 50 50 50
Corona visual test P/C kv 18/22 18/22 18/22
Net weight per unit kg 14.5 15 12.5
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Suspension Insulator Components

Insulator Components

Major elements of the suspension insulator:

  • Dielectric: Toughened glass shaped for specific environmental conditions.
  • 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-performance aluminous cement.
  • Locking Device: Stainless steel or phosphor bronze split pin.
  • Protection: Optional anti-corrosion zinc sleeve (sacrificial anode) for heavy pollution areas.
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Glass Insulator Shell Cross-Section

Sufficient creepage distance is designed to disperse the electric field strength, effectively reducing local discharge risks and preventing surface carbonization (electrocorrosion) caused by contaminants and local arcs.

Cross Section Diagram
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Product Display

Product View 1
Product View 2
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Frequently Asked Questions

What does the "300" in U300BP represent?
The "300" indicates that the insulator has a rated mechanical failing load of 300kN, which is equivalent to approximately 30 tons of force.
Why is this insulator categorized as "Anti-Pollution"?
The "P" in the model name stands for Anti-Pollution. It features a specific profile and extended creepage distance (up to 690mm depending on the sub-model) to prevent electrical tracking and discharge in areas with high environmental contamination.
Which international standards are these insulators compliant with?
They are manufactured in accordance with IEC60383-1:1993, GB/T1001.1 for product performance, and IEC60120 / BS 3288 for connection structures.
What materials are used for the cap and pin?
The cap is made of hot-dip galvanized nodular or ductile malleable cast iron, and the pin is made of hot-dip galvanized forged steel to ensure high strength and corrosion resistance.
Can I request a specific type of locking pin?
Yes, according to customer requirements, the locking pin can be either a W-pin or an R-pin. If no special instruction is provided, an R-pin is used by default for the U300BP model.
Is there extra protection available for high-corrosion environments?
Yes, for lines with heavy pollution, we highly recommend the optional anti-corrosion zinc sleeve (sacrificial anode) to protect the steel pin from degradation.

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