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Home > Standard Type > High-Quality High Voltage Power Transmission Use 160kN U160BL Disc Glass Suspension Insulator Manufacturers, Factories
High-Quality High Voltage Power Transmission Use 160kN U160BL Disc Glass Suspension Insulator Manufacturers, Factories
High-Quality High Voltage Power Transmission Use 160kN U160BL Disc Glass Suspension Insulator Manufacturers, Factories
High-Quality High Voltage Power Transmission Use 160kN U160BL Disc Glass Suspension Insulator Manufacturers, Factories
High-Quality High Voltage Power Transmission Use 160kN U160BL Disc Glass Suspension Insulator Manufacturers, Factories
High-Quality High Voltage Power Transmission Use 160kN U160BL Disc Glass Suspension Insulator Manufacturers, Factories
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High-Quality High Voltage Power Transmission Use 160kN U160BL Disc Glass Suspension Insulator Manufacturers, Factories
High-Quality High Voltage Power Transmission Use 160kN U160BL Disc Glass Suspension Insulator Manufacturers, Factories
High-Quality High Voltage Power Transmission Use 160kN U160BL Disc Glass Suspension Insulator Manufacturers, Factories
High-Quality High Voltage Power Transmission Use 160kN U160BL Disc Glass Suspension Insulator Manufacturers, Factories
High-Quality High Voltage Power Transmission Use 160kN U160BL Disc Glass Suspension Insulator Manufacturers, Factories

High-Quality High Voltage Power Transmission Use 160kN U160BL Disc Glass Suspension Insulator Manufacturers, Factories

QOCI Electric - High Quality U160BL 160KN Toughened Suspension Glass Insulator for Power Supply

160kN U160bl High Voltage Cap and Pin Type Toughened Disc Suspension Glass Electric Insulator

Ball & Scoket Type Disc Suspension Glass Insulator for Power Transmission Line U160BL

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Product Description

Product Information
U160BL Disc Suspension Insulator
  • Model: U160BL
  • U: Refers to Disc Suspension Insulator
  • 160: Indicates a rated Mechanical failing load of 160kN
  • B: Designed for Ball and Socket Type connection
  • L: Stands for Short long Foot configuration
  • 170: Structure height is 170mm (also available in 146mm and 155mm).
  • 280: Disc diameter is 280mm (other options: 255mm, 300mm, 320mm, 380mm, 420mm).
  • 400: Creepage distance is 400mm (other options: 320mm, 450mm, 550mm).
  • Type: Standard profile Toughened Suspension Type
  • Mechanical Load: 160kN (approx. 16 tons)
  • Application: Insulation support for medium and high voltage transmission lines and substation equipment; stable under various climatic conditions.
  • Complies with IEC60383-1:1993 and GB/T1001.1 standards.
  • Connection structure follows GB/T4056-2008 (IEC60120:1984) and BS 3288 part III.
  • Locking pin: W-pin or R-pin available upon request (Standard for U160BL is W-pin).
Product Drawing
Technical Drawing
Product Parameters
IEC Designation U160BS/146 U160BM/155 U160BL/170
Mechanical failing load kN 160 160 160
Diameter D mm 280 280 280
Height H mm 146 155 170
Creepage distance L mm 400 400 400
Socket coupling mm 20 20 20
Wet power frequency withstand voltage kV 45 45 45
Dry lightning impulse withstand voltage kV 110 110 110
Power frequency puncture voltage kV 130 130 130
Radio interference voltage (10kV 1MHz) μv 50 50 50
Corona visual test kV 18/22 18/22 18/22
Power frequency electric arc voltage kA 0.12s/20Ka 0.12s/20Ka 0.12s/20Ka
Impulse puncture voltage P.U 2.8 2.8 2.8
Net weight per unit kg 6.5 6.6 6.7
Suspension Insulator Components
Component Diagram

Key Elements of Suspension Insulators:

  • Dielectric: Toughened glass with specific properties designed for environmental durability.
  • Cap: Hot-dip galvanized nodular or ductile malleable cast iron.
  • Pin: Hot-dip galvanized forged steel.
  • Assembly: Cap and pin are bonded to the glass using high-strength aluminous cement to withstand thermomechanical stress.

The unit is secured with a stainless steel or phosphor bronze locking device (split pin). Pins may also include an anti-corrosion zinc sleeve (sacrificial anode) for use in heavily polluted areas.

Glass Insulator Shell Cross-section

Under long-term electrical stress, contaminants can trigger local arcs, leading to insulator surface carbonization (electrocorrosion). Sufficient creep distance helps disperse electric field strength, reducing discharge risks and extending product life.

Cross Section Analysis
Detailed Photos
Detail 1
Detail 2
Detail 3
Frequently Asked Questions
Q1: What does the "U160BL" model name signify? "U" stands for Disc Suspension Insulator, "160" refers to the 160kN rated mechanical failing load, "B" indicates the Ball and Socket connection type, and "L" refers to the specific foot length (Short long Foot).
Q2: What materials are used in the construction of these insulators? They consist of a toughened glass dielectric, a hot-dip galvanized cast iron cap, and a forged steel pin, all assembled using high-grade aluminous cement.
Q3: Which international standards do these products meet? The products are manufactured in accordance with IEC60383-1, GB/T1001.1, and the connection structures follow IEC60120 and BS 3288 part III.
Q4: Is it possible to choose between different locking pins? Yes, according to customer requirements, the locking pin can be either a W-pin or an R-pin. If no special instruction is provided, the W-pin is standard for the U160BL.
Q5: Why is creepage distance important for these glass insulators? Adequate creepage distance disperses the electric field strength, which reduces the risk of local discharge and surface carbonization caused by contaminants, thereby extending the insulator's life.
Q6: What is the mechanical load capacity of the U160BL? The rated mechanical failing load is 160kN, which is approximately equivalent to 16 tons of force.

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