Revolutionizing Medium-Voltage Distribution with Vacuum Circuit Breakers and Solid Insulated Switchgear
Introduction
Medium-voltage power systems form the backbone of industrial, commercial, and utility networks. As the demand for electricity grows, maintaining safe, reliable, and environmentally friendly distribution becomes paramount. Among the key components driving modernization are vacuum circuit breakers (VCBs) and solid insulated switchgear (SIS).
VCBs and SIS work together to deliver high-performance, low-maintenance solutions for 12kV/24kV and higher voltage systems. Degatech Electric Co. Ltd. provides a complete portfolio of these components, enabling distributors and engineers to upgrade infrastructure with confidence. Learn more at https://chinadegatech.com/.
Understanding Vacuum Circuit Breakers
What is a Vacuum Circuit Breaker?
A vacuum circuit breaker interrupts current flow in medium-voltage circuits by separating contacts in a vacuum chamber. This prevents arcing and allows fast, reliable fault clearance. Key advantages include:
Compact size and lightweight design
High electrical endurance with minimal maintenance
No need for insulating gas like SF6, making them environmentally friendly
Exceptional operational reliability under high-load conditions
VCBs are widely used in ring main units (RMUs), industrial substations, and GIS, providing essential protection for transformers, feeders, and distribution lines.
Features of Modern VCBs
High Breaking Capacity – Handles short-circuit currents up to 31.5kA
Long Mechanical Life – Capable of over 10,000 operations without significant wear
Integration Ready – Compatible with SIS and IoT monitoring modules
Environmental Safety – Free from harmful gases, fully recyclable components
Applications
Substations (12kV/24kV)
Industrial and commercial power centers
Renewable energy integration points
Urban distribution networks
For distributors, highlighting maintenance-free, safe, and reliable performance is a strong selling point.
Solid Insulated Switchgear (SIS)
Overview
Solid insulated switchgear integrates busbars, vacuum circuit breakers, and protective relays within a polymer-encapsulated enclosure. This design reduces footprint, improves safety, and simplifies maintenance.
Benefits of SIS
Compact and Modular – Perfect for urban or industrial areas with space limitations
Reduced Maintenance – Encapsulation protects against dust, moisture, and corrosion
Enhanced Safety – Minimizes the risk of electrical shocks and fire hazards
Environmental Friendly – No SF6, reducing greenhouse gas emissions
Scalable – Easy to expand networks without replacing existing units
Combining SIS with VCBs delivers a complete, modern solution for medium-voltage systems.
Epoxy Resin Bushings in Modern Systems
What They Are
Epoxy resin bushings serve as insulated passageways for conductors through grounded barriers. They offer:
High mechanical strength
Excellent insulation under voltage stress
Resistance to moisture, dust, and pollution
Lightweight and compact design for easy installation
Advantages Over Traditional Bushings
Reduced footprint compared to porcelain alternatives
Lower maintenance and operational costs
Environmentally safe, free from lead and toxic substances
Ideal for RMUs, GIS, and industrial power systems
Distributors can use epoxy resin bushings to enhance the reliability and durability of their medium-voltage projects.
Integration of VCBs, SIS, and Epoxy Resin Bushings
System-Level Benefits
Combining these technologies ensures:
Safe and efficient fault interruption
Compact, low-maintenance installations
Long service life with predictable performance
Compatibility with smart monitoring systems
This integration is critical for urban substations, industrial plants, and renewable energy projects, enabling efficient and reliable medium-voltage distribution.
Case Study: Industrial Facility Upgrade
An industrial manufacturing plant upgraded its 24kV distribution network using SIS with integrated VCBs and epoxy resin bushings:
Reduced maintenance downtime by 50%
Improved safety for on-site personnel
Enhanced load management and system monitoring
Lowered operational costs while boosting reliability
The case study illustrates how these components can transform medium-voltage infrastructure and generate significant ROI for clients.
Technical Specifications for Distributors
When selling VCBs, SIS, and epoxy resin bushings, focus on specifications:
Voltage Ratings: 12kV, 24kV, 36kV
Current Ratings: 630A, 1250A, 2000A
Short-Circuit Withstand: 25kA – 31.5kA
Insulation Material: High-strength epoxy polymers
Protection Ratings: IP30–IP65, depending on installation
Highlight these features to reassure clients of safety, durability, and compliance with IEC standards.
Applications Across Industries
Utilities
Reliable protection for urban and rural distribution networks
Integration with smart grid monitoring and automated control
Reduced maintenance and environmental footprint
Industrial Facilities
Safeguards critical production equipment
Low-maintenance solutions reduce operational costs
Predictive monitoring prevents downtime
Commercial Buildings
Supports high-density power distribution
Compact design saves space in data centers and office buildings
Enhances energy efficiency and reliability
Renewable Energy
Solar, wind, and hybrid energy plants benefit from modular switchgear
Epoxy resin bushings ensure resilience against environmental stressors
Integrated monitoring enables predictive maintenance
Degatech Product Portfolio
At https://chinadegatech.com/, Degatech Electric Co. Ltd. offers:
12kV/24kV Epoxy Resin Bushings – Compact, durable, and safe
Vacuum Circuit Breakers (VCBs) – High endurance, low-maintenance fault protection
Solid Insulated Switchgear (SIS) – Modular, compact, and environmentally safe
Ring Main Units (RMU) – Integrated systems with VCBs and monitoring options
IoT and Smart Monitoring Solutions – Predictive maintenance and real-time system oversight
All products comply with IEC standards and are certified to ensure long-term reliability in diverse medium-voltage applications.
Marketing and SEO Strategy
When distributing and promoting these products:
Emphasize environmental safety, low maintenance, and reliability
Share case studies demonstrating operational ROI
Include technical specifications and installation guides online
Use keywords: Vacuum Circuit Breaker, Solid Insulated Switchgear, Epoxy Resin Bushing, 12kV/24kV Switchgear, Medium Voltage RMU, Degatech Electric
Educating clients about the advantages of modern medium-voltage solutions can help distributors establish themselves as trusted solution providers.
Conclusion
Integrating vacuum circuit breakers, solid insulated switchgear, and epoxy resin bushings revolutionizes medium-voltage distribution systems. Distributors offering these solutions can meet client demands for safe, reliable, compact, and environmentally friendly power systems.
Degatech Electric Co. Ltd. continues to innovate in the medium-voltage sector, delivering high-quality, standards-compliant solutions. Explore our products and connect with our experts at https://chinadegatech.com/ for tailored solutions.