Introduction

Tonghe DC Power Distribution Panel with Intelligent High-Frequency Switching are widely applied in power plants, substations, airports, ports, and supporting substations for petroleum, metallurgy, chemical industry, industrial and mining enterprises, as well as power distribution rooms of hotels and buildings. It provides power for DC mechanisms (circuit breaker opening and closing), relay protection, automatic control, instruments and meters in secondary circuits, emergency lighting, and emergency loads. They are especially suitable for unattended operation.

The Tonhe Electronics GZDW Series DC Power Distribution Panel is an intelligent direct current power solution designed for critical infrastructure applications. Utilizing advanced high-frequency switching technology, this system delivers reliable DC power for power plants, substations, data centers, and industrial facilities worldwide. The integrated cabinet combines charger modules, DC distribution units, monitoring & control systems, and insulation monitoring devices into a single enclosure. With N+1 hot-swappable redundancy, the system ensures 24/7 uninterrupted operation. Core features include intelligent battery management, RS485 communication, and multi-layer safety protection—making it the "energy hub" for control, protection, and emergency power systems.

• Utility Substations – Control & protection power supply
• Power Plants (Thermal/Hydro/Nuclear) – DC operation power system
• Data Centers – Critical load backup power
• Rail Transit – Signaling & communication systems
• Oil & Gas Facilities – Control room power supply
• Smart Manufacturing – Industrial automation power

The panel is equipped with an intelligent battery management unit (BMU) compatible with VRLA (Valve-Regulated Lead-Acid), Gel, and Lithium-Ion battery types. Features include:

• Auto Float/Equalize Charge with temperature compensation
• Real-time battery monitoring (voltage, current, internal resistance)
• Automatic protection activation upon battery abnormality detection
• Independent busbar design for control load and power load separation
• Silicon chain voltage reduction device with hot-standby switching capability
• Hardware-based current sharing with ≤5% maximum current imbalance
• This comprehensive battery management extends battery service life and enhances overall system reliability.

1. Why choose us?

   We are a high-tech enterprise integrating manufacturing, sales, system solutions, and after-sales service. With over 290 successful projects for 220 kV to 500 kV substations and battery systems above 1000 Ah, Tonhe has become a leading DC power system supplier in China, holding over 40% market share and producing 1 million modules annually. Choose us for exceptional quality, reliable support, and proven value.

2. How can we guarantee quality?

   Our 8 advanced production lines, equipped with imported machinery, achieve 80% automation and up to 99% first-pass yield. All power modules undergo double-sided potting, conformal coating, and rigorous functional, environmental, and aging tests—ensuring reliable 24/7 performance in critical power infrastructures.

3. How We Support Your Business?

   A full range of power conversion modules, system-level low-voltage DC distribution cabinets for DC loads, data center power systems, as well as customized hardware and software power solutions.

4. Can customers get sample orders?

   Yes, you can get sample orders to test our quality. The cost of samples is paid by the customer.

5. What are the payment types?

   We accept payment via TT (Telegraphic Transfer).Product Introduction.

6. 350+ Elite R&D Engineers

   Tonhe Technology boasts a dedicated team of over 350 R&D engineers, representing a significant portion of our total workforce. Core team members hail from renowned domestic and international universities and research institutions, focusing on breakthroughs in cutting-edge power electronics technology. Deep Patent Portfolio: We hold hundreds of core technical patents covering high-frequency soft-switching, digital control algorithms, and EMC design. As a drafting unit for multiple power supply industry standards, we don't just follow standards; we help define them.

7. Global Service & Support System

   7x24 Remote Intelligent O&M: Leveraging IoT technology, the Tonhe Technical Support Center provides 7x24 remote diagnostic services. No matter where our customers are located, our expert team can quickly identify faults and provide solutions through remote data access, minimizing downtime to the greatest extent. International Certification Assurance: Our full product line passes CE,9001,IEC certifications, complying with entry standards for major global markets, ensuring worry-free procurement for overseas clients.