U70BS ANSI-Class Glass Insulator - 255mm Diameter, 320mm Creepage for 220kV-550kV Transmission

• Customization: Available
• Application: High-voltage, Low-voltage, High-temperature
• Material: Glass
• Model NO.: Glass Insulator, ANSI
• Structure: Suspension Insulator
• Type: A Type Insulator
• Usage: High Voltage Power Transmission, Insulation, Electrical Installation
• Connection Method: Trough Type
• Size of Bearing Capacity: 70KN
• Certification: CCC, CE, ISO9001
• Color: Green
• Voltage: 69-550KV
• Delivery: 60 days
• Label: NJREC or OEM
• Code: 85469010
• Transport Package: Carton/Wooden Pallet
• Origin: China
• HS Code: 85462090
• Production Capacity: 10000/Year

Product Description

U70BS ANSI-Class Glass Insulator

255mm Diameter | 320mm Creepage | 220kV-550kV Transmission
 

Product Parameters

Parameter	Value	Standard Compliance
Rated Voltage	220KV to 550KV Systems	IEEE 4 / IEC 60071
Mechanical Strength	70kN (15,700 lbf)	ANSI C29.2 / IEC 60305
Creepage Distance	320mm (Industry-leading)	IEC 60815 Pollution Level C
Diameter	255mm (±2mm tolerance)	AS 4434
Flashover Voltage	185kV Dry / 135kV Wet	EN 60383
Weight	8.2kg (UV-resistant toughened)	GOST 10390

Core Advantages
 

Extended 320mm Creepage Path

Engineered for coastal & desert regions with salt/sand pollution, reducing maintenance frequency by 40% vs. standard 250mm units.

 

550kV BIL (Basic Insulation Level)

Surpasses IEEE 4 requirements with 185kA lightning impulse withstand, ideal for tropical storm-prone areas.

 

Self-Cleaning Hydrophobic Surface

Prevents water bridging even at 60mm/hr rainfall intensity.

 

Interchangeable Hardware System

Compatible with both:

Clevis-Yoke (AS 4434 Type A)

Socket-Pin (ANSI 52.1 Type B)
 

Applications
 

Transmission Towers: 500kV+ EHV lines (Bundle & Single Conductor)

Substations: Busbar Support & Switchgear Insulation

Renewable Integration: Offshore Wind Farm Collector Lines
 

Packaging & Logistics
 

Export-Ready Crates: 12pcs/crate

Lead Time: 60 days (Standard) / 12 days (Express via FedEx/DHL)