FJH-110/160 Insulator Equalizing Ring

10kV-220kV Grading Ring for Composite & Porcelain Insulators

The FJH-110/160 Insulator Equalizing Ring is a high-voltage grading ring specially designed to balance the electric field around long string insulators used in 110kV to 220kV power lines and substations. By minimizing voltage concentration and corona discharge at the ends of insulators, it significantly reduces the risk of insulation degradation and improves operational reliability in outdoor transmission environments.

This model is compatible with both FXBW composite insulators and traditional ceramic suspension types, offering tailored solutions for various installation heights and system voltages.

⚙️ Technical Specifications

Parameter	Value
Model Number	FJH-110/160
Rated System Voltage	110kV – 220kV
Outer Diameter	400 mm / 500 mm (customizable)
Material	Aluminum Alloy (Anti-oxidation)
Mounting Position	Live end of insulator string
Installation	Clamp-on type with U-bolt locking
Environmental Class	Outdoor / Anti-corrosive
Standards Compliance	IEC 61284, GB/T 2314

🧩 Key Functional Benefits

• Uniform Electric Field Distribution across the insulator length

• Reduces corona and radio interference under high humidity or pollution

• Extends insulator lifespan by mitigating localized overvoltage

• Customizable to fit various insulator types and tower designs

• Lightweight, corrosion-resistant aluminum alloy

• Easy installation with bolt-on clamp system, no welding required

🏗️ Common Application Scenarios

• High-voltage transmission towers (110kV–220kV lines)

• Coastal or industrial zones with high humidity and pollution levels

• Long insulator strings on suspension or tension towers

• Upgrading existing porcelain insulator strings with composite alternatives

• EHV line corona control and partial discharge reduction

🌍 Verified International Feedback

🗣️ Lars P., Grid Asset Engineer – Statnett, Norway
“We use FJH-110/160 on several 132kV lines in coastal fjord regions. The rings help significantly in suppressing wet corona.”
📌 Source: Statnett HV Asset Maintenance Report, 2023

🗣️ Emily R., Power Systems Manager – UK Power Networks
“We added equalizing rings during insulator retrofits. Noticed immediate improvements in radio interference levels.”
📌 Source: UKPN Line Performance Audit, 2022

🗣️ Pablo G., Transmission Supervisor – REE Spain
“Installation on FXBW strings was straightforward. Reduced flashover events in high-salt environments.”
📌 Source: REE Environmental Adaptation Case Study, 2023

🗣️ Thomas D., Maintenance Inspector – TransGrid Australia
“We’ve standardized FJH rings for new 220kV builds. They minimize long-term degradation from pollution.”
📌 Source: TransGrid New Build Material Specification, 2024

🗣️ Joseph W., Field Engineer – Hydro Québec, Canada
“The aluminum ring performs well in ice-prone zones. No oxidation observed after three winters.”
📌 Source: Hydro Québec Field Report on Ice Load Structures, 2022

❓ Frequently Asked Questions (FAQ)

• What is the purpose of an equalizing ring?
It equalizes the potential along the insulator string, reducing corona and partial discharge at the end fittings.

• Is the FJH-110/160 ring suitable for FXBW composite insulators?
Yes. It is designed to match both composite (FXBW series) and porcelain insulator end fittings.

• Can it be retrofitted on existing lines?
Absolutely. It uses a mechanical clamp system for quick and secure attachment.

• How does it affect pollution flashover?
By reducing electrical stress at the ends it lowers the chance of dry band arcing, common in polluted areas.

• Is it available in custom diameters?
Yes. Diameters can be customized based on string length, tower spacing, and insulation design.

📞 Contact for Technical Drawings or Bulk Orders

Thor – Electrical Engineer, Wei Shoe Elec
📞 Tel: +86-0577-62788197
📱 WhatsApp: +86 159 5777 0984
📧 Email: [email protected]

The FJH-110/160 equalizing ring is a critical upgrade for ensuring long-term insulator reliability in HV environments. Equip your transmission lines with advanced protection today.