LXWP2-70 (U70BLP2) Glass Insulator Fog Type — 70kN Ball & Socket Disc Suspension Insulator for Heavily Polluted and Foggy Overhead Lines

The LXWP2-70 (U70BLP2) Glass Insulator Fog Type is a fog type, ball-and-socket disc suspension insulator with a rated mechanical failing load of 70kN (15,000 lbs).

 

Manufactured by TCI Insulators, this insulator features a large 280mm diameter and an extended 450mm leakage distance, specifically engineered for overhead transmission and distribution lines operating in heavy fog, severe pollution, coastal, and industrial environments.

 

It combines high-strength toughened glass with hot-dip galvanized steel hardware, delivering reliable insulation performance where standard-profile insulators may suffer from contamination flashover.

 

The U70BLP2 designation follows the IEC naming convention: U = disc suspension insulator, 70 = rated mechanical failing load of 70kN, B = ball-and-socket coupling type, L = long creepage, P2 = fog type profile (type 2).

 

The unit is fully compliant with IEC 60383-1 and GB/T 1001.1, with connection structures conforming to GB/T 4056-2008 (IEC 60120) and BS 3288 Part III.

 

LXWP2-70 (U70BLP2) Glass Insulator Technical Specifications

Dimensions

Parameter	Value
Diameter (D)	11 inch (280mm)
Spacing (H)	5 3/4 inch (146mm)
Leakage Distance	17 3/4 inch (450mm)
Coupling Size	16

 

The large 280mm diameter and fog type profile with deep, open sheds provide a long 450mm leakage distance. This design effectively prevents water-film formation and significantly reduces the risk of flashover in heavy fog, drizzle, salt spray, and industrial pollution.

 

Mechanical Values

Parameter	Value
Mechanical Failing Load	15,000 lbs (70kN)
Tension Proof	7,500 lbs (35kN)

 

The 70kN mechanical failing load provides dependable tensile strength for suspension and tension strings in distribution and sub-transmission lines. Each unit undergoes a routine proof test at 35kN to guarantee reliability.

 

LXWP2-70 (U70BLP2) Glass Insulator Electrical Values

Parameter	Value
Low Frequency Dry Flashover Voltage	95kV
Low Frequency Wet Flashover Voltage	60kV
Critical Impulse Flashover Voltage, Positive	140kV
Critical Impulse Flashover Voltage, Negative	140kV
Low Frequency Puncture Voltage	130kV

 

The toughened glass dielectric delivers superior insulation capability, withstanding power frequency voltages and impulse surges while maintaining stable performance in contaminated and humid conditions.

 

Radio Influence Voltage (RIV) Data

Parameter	Value
Test Voltage RMS to Ground	10kV
Maximum RIV at 1000 kHz	50μV

 

Packing and Shipping Data

Parameter	Value
Net Weight, Approximate	5.8kg

 

LXWP2-70 (U70BLP2) Glass Insulator Key Features

Fog Type Anti-Pollution Profile (Type 2) — The large 280mm diameter and 450mm leakage distance provide excellent contamination performance, making the LXWP2-70 (U70BLP2) ideal for heavy fog, coastal, and severely polluted areas where standard insulators are prone to flashover.

 

Automatic Zero-Value Self-Shattering — When an electrical or mechanical fault occurs, toughened glass self-shatters, leaving the mechanical string intact. Patrol teams can spot defects instantly from the ground without climbing towers or using expensive testing equipment.

 

Superior Anti-Aging & Weather Resistance — Unlike porcelain or composite materials, toughened glass resists chemical aging, UV radiation, and retains dielectric properties for decades of service.

 

High Mechanical Strength — The 70kN rated failing load ensures dependable performance under mechanical stress, including wind and ice loading.

 

Flexible Locking Pin Options — The U70BLP2 accommodates either W-pin or R-pin locking mechanisms; R-pin is used as the standard configuration unless otherwise specified.

 

Hot-Dip Galvanized Hardware — The cap and pin are made from hot-dip galvanized ductile iron and forged steel, assembled with high-strength aluminous cement. A stainless steel split pin secures the coupling of units. An optional zinc sleeve (sacrificial anode) is available for heavy-pollution lines.

 

LXWP2-70 (U70BLP2) Glass Insulator Applications

• 10kV–35kV overhead power transmission and distribution lines
• Heavy fog, severely polluted, coastal, and industrial environments
• Salt-spray zones and chemical plant areas
• Railway electrification systems
• Urban and rural power network construction
• Tension strings and suspension strings

 

Why Choose LXWP2-70 (U70BLP2) Glass Insulator TCI Insulators?

TCI Insulators is a trusted manufacturer of composite and porcelain insulators, serving global utilities and contractors since 2002. With state-of-the-art testing facilities and rigorous quality assurance processes, TCI conducts comprehensive product tests including ultraviolet aging, hardness, flame-retardant, tracking, and leakage current tests according to national and international standards.

 

Our disc suspension insulator system supports mechanical and electrical loads from 10,000 to 120,000 lbs, available across all voltage levels for both distribution and transmission systems, fully compliant with IEC standards.

 

LXWP2-70 (U70BLP2) Glass Insulator Related Products

• LXWP1-70 (U70BLP1) Fog Type Glass Insulator — 70kN rated, 255mm diameter, 400mm leakage distance
• LXP-40 (U40B) Ball & Socket Disc Suspension Insulator — 40kN rated, for 10–35kV lines
• LXP1-70 (U70BS) Ball & Socket Disc Suspension Insulator — 70kN rated, standard spacing for 33–66kV lines
• LXP2-70 (U70BL, ANSI 52-3) Ball & Socket Disc Suspension Insulator — 70kN rated, long spacing for 33–66kV lines
• LXP-100 (U100BL) Ball & Socket Disc Suspension Insulator — 100kN rated, for high-voltage transmission
• LXP-120 (U120B, ANSI 52-5) Ball & Socket Disc Suspension Insulator — 120kN rated, ANSI 52-5 compatible
• LXP1-160 (U160BS, ANSI 52-8) Ball & Socket Disc Suspension Insulator — 160kN rated, standard spacing, ANSI 52-8 compatible
• LXP2-160 (U160BM) Ball & Socket Disc Suspension Insulator — 160kN rated, medium-long spacing
• LXP3-160 (U160BL) Ball & Socket Disc Suspension Insulator — 160kN rated, long spacing
• LXP-210 (U210B) Ball & Socket Disc Suspension Insulator — 210kN rated, extra-high-voltage transmission
• LXP-240 (U240B, ANSI 52-11) Ball & Socket Disc Suspension Insulator — 240kN rated, ANSI 52-11 compatible
• LXP-300 (U300B) Ball & Socket Disc Suspension Insulator — 300kN rated, ultra-high-voltage transmission
• LXP-420 (U420B) Ball & Socket Disc Suspension Insulator — 420kN rated, ultra-high-voltage transmission
• LXP-550 (U550B) Ball & Socket Disc Suspension Insulator — 550kN rated, UHV transmission
• LXDP-70C (U70C) Ball & Socket Disc Suspension Insulator — 70kN rated, suspension type with arc protection
• LXDP-70CN (U70CN) Ball & Socket Disc Tension Insulator — 70kN rated, tension type with arc protection
• LXDP-100C (U100C) Ball & Socket Disc Suspension Insulator — 100kN rated, suspension type with arc protection
• LXDP-100CN (U100CN) Ball & Socket Disc Tension Insulator — 100kN rated, tension type with arc protection
• LXAP-70 (U70BP) Ball & Socket Disc Suspension Insulator — 70kN rated, anti-pollution profile
• LXAP-100 (U100BP) Ball & Socket Disc Suspension Insulator — 100kN rated, anti-pollution profile
• LXAP-120 (U120BP) Ball & Socket Disc Suspension Insulator — 120kN rated, anti-pollution profile
• LXAP1-160 (U160BP) Ball & Socket Disc Suspension Insulator — 160kN rated, anti-pollution profile
• LXAP-210 (U210BP) Ball & Socket Disc Suspension Insulator — 210kN rated, anti-pollution profile
• LXAP-240 (U240BP) Ball & Socket Disc Suspension Insulator — 240kN rated, anti-pollution profile
• LXAP-300 (U300BP) Ball & Socket Disc Suspension Insulator — 300kN rated, anti-pollution profile
• Porcelain Disc Suspension Insulators — U40B through U550B IEC class range
• Composite Hollow Insulators — For instrument transformers and circuit breakers

 

Internal Links:

• TCI Insulators Homepage
• Disc Suspension Insulators
• Toughened Glass Insulators
• Composite Hollow Insulators
• Contact TCI Insulators

External Links:

• IEC 60383-1 — Insulators for Overhead Lines
• GB/T 1001.1 — Insulators for Overhead Lines with a Nominal Voltage Above 1,000 V
• IEC 60120 / GB/T 4056 — Ball and Socket Coupling Dimensions
• BS 3288 Part III — Insulator Connections

 

All specifications are subject to change without notice. For the most current technical data and pricing, please contact TCI Insulators directly at www.tcinsulators.com.