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Home > Anti-Pollution Type > High-Quality 120kn High Voltage Anti-Pollution Toughened Suspension Glass Insulator U120BLP Manufacturers, Suppliers
High-Quality 120kn High Voltage Anti-Pollution Toughened Suspension Glass Insulator U120BLP Manufacturers, Suppliers
High-Quality 120kn High Voltage Anti-Pollution Toughened Suspension Glass Insulator U120BLP Manufacturers, Suppliers
High-Quality 120kn High Voltage Anti-Pollution Toughened Suspension Glass Insulator U120BLP Manufacturers, Suppliers
High-Quality 120kn High Voltage Anti-Pollution Toughened Suspension Glass Insulator U120BLP Manufacturers, Suppliers
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High-Quality 120kn High Voltage Anti-Pollution Toughened Suspension Glass Insulator U120BLP Manufacturers, Suppliers
High-Quality 120kn High Voltage Anti-Pollution Toughened Suspension Glass Insulator U120BLP Manufacturers, Suppliers
High-Quality 120kn High Voltage Anti-Pollution Toughened Suspension Glass Insulator U120BLP Manufacturers, Suppliers
High-Quality 120kn High Voltage Anti-Pollution Toughened Suspension Glass Insulator U120BLP Manufacturers, Suppliers

High-Quality 120kn High Voltage Anti-Pollution Toughened Suspension Glass Insulator U120BLP Manufacturers, Suppliers

U120blp/320mm/146mm/550mm Anti-Fog type glass isolator is made of high-strength tempered glass, which has the characteristics of self-cleaning, zero value self explosion and long service life. It is an efficient insulation equipment specially designed for coastal, industrial areas and other high pollution and high humidity transmission environments.

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Product Description

Product Overview

U120BLP Product Overview
● Model: U120BLP
• U: Disc Suspension Insulator
• B: Ball and Socket Type
• L: Long Steel Foot
• P: Antifouling Type
● Type: Anti-Pollution or Anti-Fog Profile Toughened Suspension Type
● Rated mechanical load: 120kN (approximately 12 tons)
● Purpose: Primarily used for high/ultra-high voltage transmission lines (110kV, 220kV, 500kV, etc.), particularly in harsh environments such as high pollution, humidity, salt fog, and industrial dust.

Compliance Standards:

  • Model according to GB/T 7253-2005 and JB/T9683-2012 (IEC60305:1995MOD).
  • Connection structure according to GB/T4056-2008 (IEC60120:1984, MOD) and BS 3288 part III.
  • Locking pin available as W-pin or R-pin (W-pin is standard for U120BLP).

Structure and Materials

Structure and materials of U120BLP
Glass Umbrella Tray: High-strength tempered glass with heat treatment for enhanced mechanical properties and thermal shock resistance. Smooth surface with strong hydrophobicity prevents dirt adhesion. Features "Zero-value self-explosion" for quick fault identification.
Metal Accessories: Cap and foot are made of hot-dip galvanized steel or aluminum for corrosion resistance. Standardized locking pins ensure reliable string connections.
Umbrella Skirt Design: Large climbing distance antifouling structure with deep edges increases creepage distance (≥ 450mm). Optimized shape prevents continuous rainwater lines and improves wet flashover voltage.

Key Parameters

Parameter Item U120BLP U120BLP1
Ball and socket coupling mm 16 16
Nominal Diameter D mm 280 320
Spacing H mm 146 146
Creepage L mm 450 550
Minimum mechanical failing load kN 120 120
Wet Power frequency withstand voltage kV 50 55
Dry Lighting impulse withstand voltage kV 125 140
Power frequency puncture voltage kV 130 130
Net weight kg 5.8 8.2

Application Scenarios

High Pollution Areas: Coastal regions, chemical plants, and cement plants with dense salt fog or chemical dust.
High Altitude Area: Excellent anti-aging performance under strong UV radiation and large temperature variations.
Important Transmission Lines: Backbone power grids requiring high reliability and low maintenance.
Lightning Strike Prone Areas: Superior arc resistance reduces lightning trip rates.

Core Advantages

  • Strong anti-pollution flashover ability: Large climbing distance and glass self-cleaning properties.
  • Long service life: Tempered glass offers weather resistance for 30+ years without aging.
  • Zero-value self-explosion: Simplifies maintenance as faulty units are visually identifiable.
  • Eco-friendly & Economical: Recyclable glass materials and low life-cycle costs.

Precautions

Installation: Use a torque wrench to prevent stress concentration from improper tightening.
Transportation: Avoid violent collisions to prevent damage from improper stress.
Maintenance: Regularly monitor for self-explosions and flush with charged water in severe pollution conditions.

Frequently Asked Questions

What does the "Zero-value self-explosion" feature mean?
It means that if a glass insulator loses its insulation performance due to a fault, the glass disc will automatically burst. This allows maintenance staff to identify and replace the faulty unit quickly without specialized testing equipment.
Where is the U120BLP insulator most effective?
It is designed for high-pollution and high-humidity environments like coastal areas and industrial zones, as well as backbone power grids requiring high reliability.
Can I choose the type of locking pin for this model?
Yes, depending on your requirements, the locking pin can be either W-pin or R-pin. If not specified, the W-pin is the standard delivery for U120BLP.
What is the estimated service life of these glass insulators?
Tempered glass insulators are highly resistant to aging and weather; they typically have a service life of more than 30 years.
What is the creepage distance of the U120BLP?
The U120BLP has a creepage distance of 450mm, while the U120BLP1 offers an extended distance of 550mm for even higher pollution protection.
How should these insulators be transported?
They should be handled with care to prevent violent collisions. Although the glass is toughened, extreme impact or improper stress during transport can lead to structural damage.

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