Double Busbar Switchgear
-- Steady & Reliable Manufacturer --
Product Overview
Double Busbar Switchgear (DBS) is the "High-Availability Champion" for critical infrastructure and utility networks. At DSJ Electrical, our DBS systems feature two independent sets of main busbars, allowing for seamless load transfers and maintenance without a total system shutdown. This configuration provides the ultimate redundancy: if one busbar system requires inspection or fails, the entire load can be moved to the second system via a bus-coupler. We utilize advanced mechanical and electrical interlocks to prevent accidental paralleling of unsynchronized sources. Whether you are managing a national grid substation or a mission-critical data center, DSJ Double Busbar gear provides the "N+1" reliability required to ensure that power never stops, even during major maintenance events.
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Low-Voltage Switchgear
CE Certified Main Distribution Board Construction Site Switchgear/Switchboard
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Medium-Voltage Switchgear
KYN28A-12 CE/UL Certified Metal Clad Switchgear Medium Voltage Switchgear/Switchboard
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Medium-Voltage Switchgear
KYN61-40.5 CE/UL Certified Metal Clad Switchgear Medium Voltage Switchgear/Switchboard
Electrical Partner
At DSJ, we transform complexity into reliability. With 42+ years of expertise in power distribution systems, our turnkey service integrates every phase – from regulatory compliance to final commissioning – ensuring seamless project execution for global clients. Whether it is the initial design or the final handover, we will strictly control every detail to ensure that the final delivered products perfectly meet your expectations. With us, you can focus on your core business with peace of mind, knowing that your project is in the hands of professional and reliable partners.
Introduction
The Double Busbar Switchgear line from DSJ Electrical Co., Ltd is built for "Continuous Energy." We recognize that for certain industries, "Zero Downtime" is the only acceptable metric. Our introduction of this series focuses on "Operational Redundancy" and "Grid Resilience." We provide a system that can be split, joined, or isolated while remaining fully energized.
Innovation at DSJ involves "Automated Bus-Transfer Logic." Our DBS units can be equipped with fast-acting numerical relays that automatically switch the load to the healthy busbar in milliseconds if a voltage drop is detected. We prioritize "Safety Interlocking," using the "Kirk-Key" or electronic logic to ensure that an operator can never make a switching error. At DSJ, we provide these units in Gas Insulated (GIS) or Air Insulated (AIS) formats, tailored to your site's environmental needs. Choosing our double busbar gear means choosing "Future-Proof Infrastructure." We provide the "Dual-Path" security that keeps the most important systems in the world running. We are the "Redundancy Experts."
Applications
- Transmission Substations: Essential for grid stability and load shedding.
- Hyperscale Data Centers: Ensuring 99.999% uptime for server clusters.
- Major Airports: Protecting runway lighting and air traffic control.
- Semiconductor Fabs: Preventing catastrophic losses from micro-outages.
- Large Hospitals: Dual-feed security for surgical and life-support wings.
- Continuous Process Plants: Chemical or glass plants that cannot stop production.
Specifications
| Technical Category | Double Busbar Spec |
|---|---|
| Voltage Levels | 12kV / 24kV / 35kV / 110kV |
| Busbar Configuration | Main A + Main B with Bus Coupler |
| Rated Current | Up to 4000A per Bus |
| Transfer Time | < 50ms (with High-Speed Logic) |
| Interlocking | Fail-Safe Mechanical & Electrical |
| Control System | IEC 61850 Smart Automation |
| Standard | IEC 62271-200 / GB 3906 |
Why Choose Us
DSJ Electrical is a "Critical Power Authority." We understand the physics of double-busbar systems, specifically the management of circulating currents and fault-level calculations. Our DBS gear is the trusted choice for national utilities and global tech giants who cannot afford a single second of darkness.
- Q: Can I upgrade a single busbar to a double busbar later?
- A: No, the frame and busbar architecture must be designed for DBS from the start.
- Q: Is it available in a compact GIS version?
- A: Yes, we offer double-busbar GIS to save space in urban substations.
Advantages
- Highest Reliability: Total busbar redundancy for 100% uptime.
- Maintenance Flexibility: Service one busbar while the other is live.
- Load Balancing: Distribute loads across two independent sources.
- Fault Isolation: Isolate a busbar fault without losing all feeders.
- Smart Grid Ready: Integrated with advanced SCADA for remote switching.
- Long-Term Value: Reduces the cost of scheduled outages significantly.
Standards & Certifications
Our DBS systems are fully type-tested to IEC 62271-200 standards. We hold KEMA and ISO 9001 certifications. Every unit undergoes a rigorous "Transfer Sequence Test" to ensure logic integrity.
Payment & Shipping
DBS units are larger and are shipped as modular sections for onsite coupling. Lead times: 12-16 weeks.
DSJ Story
about DSJ
Building Power, Building Trust
Founded in 1983, DSJ is a leader in China's power distribution equipment. Headquartered in Beijing as the top-selling enterprise, we integrate manufacturing with trade and maintain full in-house capabilities in R&D, production, and sales. This enables efficient fulfillment of custom orders with industry-leading speed.
As a producer of distribution system, transformer, generator and photovoltaic products exceeding Chinese/international standards, DSJ supplies medium/low-voltage electrical equipment, and PV systems. For over four decades, we have delivered high-safety electrical solutions globally to public infrastructure, corporations, and households – achieving the industry's lowest return rate.
Committed to "meeting diverse needs through quality", DSJ leverages expert teams to provide one-stop services: pre-sales consultation & customization, flexible logistics/payment options, and reliable maintenance – ensuring seamless producer-maintainer-customer collaboration.
+86 18513032986 
FLC Center, Chaoyang District, Beijing, China