Hitachi Energy offers the world’s most comprehensive range of transformer bushings, backed by over 100 years of manufacturing expertise and six decades of leadership in dry bushing technologies. As your trusted partner, we deliver a flawless customer experience through innovation, reliability, and global support.
Our bushings are engineered to withstand extreme environmental conditions—including high temperatures, humidity, and vibration—while exceeding international safety and reliability standards. Designed for easy installation and maintenance, they feature advanced monitoring systems and diagnostic tools to detect potential issues before they escalate, ensuring long-term performance and peace of mind.
Find the Right Bushing for your Needs
Explore our interactive Bushings Product Guide to quickly identify the ideal solution for your application. Filter by voltage class, insulation type, material, and other key parameters to match your technical requirements.
Reliable insulation for global power systems
Hitachi Energy’s transformer bushings ensure safe and reliable operation of transformers across diverse applications. As critical components in electrical networks, bushings provide robust insulation and mechanical support, enabling long-term grid stability.
Why Transformer Bushings matter
Transformer bushings are essential for transferring electrical energy through grounded barriers without compromising insulation integrity. They play a crucial role in ensuring the safety, reliability, and efficiency of transformers in high-voltage environments.
We are your partner in solving your challenges
Unplanned transformer downtime is a significant challenge. Hitachi Energy helps prevent this through regular inspections, preventive maintenance, and continuous performance monitoring.
Tailormade bushings and diagnostic services enable accurate budget planning, optimize maintenance spending, and reduce the risk of costly repairs.
We provide solutions for all bushing brands, ensuring seamless upgrades and replacements to maintain operational reliability and continuity.
Leveraging our global network of factories, we ensure quick delivery times and a comprehensive range of products and services—wherever you are.
Technologies
Application areas
Why choose Hitachi Energy for your Transformer Bushings?
100+
YEARS OF EXPERTISE
A century of innovation and six decades of leadership in dry bushing technologies.
50+
YEARS OF EXPERIENCE
A proven track record of over 50 years of experience, 2.5 million bushings sold, and 5,000 units produced monthly, ensuring unmatched reliability.
30+
COUNTRIES WITH SERVICE CENTERS
Global reach and support with service centers in 30+ countries and a network of 1,300+ trained specialists, providing 24/7 assistance worldwide.
Quality
COMMITMENT
Solutions engineered to meet international standards for safety, performance, and long-term durability.
Frequently Asked Questions (FAQs) about Transformer Bushings
Looking for quick answers about transformer bushings? Our FAQ section covers everything you need to know—from their purpose and types to maintenance tips and safety benefits. Gain expert insights to help you select and maintain the optimal solution for your power systems.
A transformer bushing is a critical component that allows electrical conductors to pass safely through grounded barriers, such as the transformer tank, without compromising insulation. Its primary purpose is to maintain electrical integrity and prevent faults, ensuring reliable transformer operation in high-voltage environments
Transformer bushings come in several designs to meet diverse application needs:
- Oil-impregnated paper (OIP) bushings: Feature condenser cores saturated with transformer-grade mineral oil and porcelain insulators for superior dielectric performance.
- Resin Impregnated Paper (RIP) bushings: Dry bushings with resin-impregnated cores and composite or porcelain insulation, offering enhanced environmental resistance.
- Hybrid and advanced technologies: Combine the benefits of OIP and RIP for specialized applications, including AC/DC transformers and reactors.
OIP bushings use oil-saturated paper insulation, making them ideal for traditional high-voltage applications. RIP bushings, on the other hand, use resin-impregnated paper for a dry, maintenance-friendly design that resists moisture and environmental stress. This difference impacts installation, maintenance, and performance in harsh conditions.
Preventive maintenance is crucial for minimizing downtime and extending service life. Regular inspections, performance monitoring, and diagnostic checks help detect potential issues early. Hitachi Energy also offers tailored maintenance programs and advanced monitoring systems to ensure optimal reliability and uptime.
Bushings maintain insulation integrity, preventing electrical faults and ensuring safe energy transfer through grounded barriers. By meeting international standards such as IEC and IEEE, they ensure operational safety and reliability in demanding environments.
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