TH230D30NZ-6: 220V DC Rectifier Module (30A, 380VAC Input) for Substation Battery Charging Systems

Product Introduction

The TH230D30NZ-6 is a force-air-cooled high-frequency switching rectifier module engineered for 220V/230V DC battery charging systems in substations, power plants and distribution substations. It converts three-phase 380VAC mains into a stable 176–300VDC output with a rated current of 30A and a maximum output power of approximately 9kW per module. Built on full-digital control and resonant soft-switching technology, it delivers ≥93% peak efficiency and ≥0.98 power factor at full load. The module supports hot-swap plug-and-play, N+1 redundant parallel operation, and a standard RS-485 communication interface, with comprehensive hardware/software dual protection and CE certification.

Technical Specifications

Key Advantages
1. High efficiency, low energy loss – Patented resonant soft-switching (ZVZCS) technology delivers ≥93% peak efficiency, minimizing heat generation and electrical losses for significant long-term energy savings.
2. Grid-friendly high power factor – ≥0.98 power factor at full load with low harmonic distortion, meeting grid connection requirements without the need for external power factor correction equipment.
3. Full-digital intelligent control – High regulation accuracy (≤±0.5% voltage, ≤±1% current) with automatic float/equalize charge transitions and battery charging curve management. The RS-485 interface (optional CAN bus) enables full "four-remote" SCADA monitoring – telemetering, tele-signaling, remote control and remote regulation.
4. Hot-swap and N+1 redundancy – Modules are plug-and-play with a current-sharing imbalance of ≤±3%, allowing live system expansion and fault replacement without downtime for maximum system reliability.
5. Comprehensive multi-level protection – Input over/under-voltage, output overvoltage (dual hardware and software protection), overcurrent limiting, self-recovering short-circuit, over-temperature and phase-loss protection. Insulation strength of 2100VAC ensures maximum safety.
6. Wide input tolerance – 323–456VAC input range withstands grid voltage fluctuations in power plant and substation auxiliary supply conditions.
7. Proven manufacturer reliability – Built by Tonhe (established 1998), a leading Chinese DC power system manufacturer with over 40% domestic market share and more than 290 substation projects (220kV–500kV). Modules undergo conformal coating, potting and aging tests for reliable 24/7 operation, and are CE certified.

Application Scenarios
- Substation DC systems: battery charging for 220V DC control, protection and operating power
- Power plants (thermal, hydro and renewable): DC auxiliary power supply systems
- Distribution substations, switching stations and high-voltage DC panels in industrial facilities
- DC supply for high-voltage circuit breaker trip/close, relay protection and signaling circuits
- New construction, capacity expansion and retrofit of DC power panels (GZDW series)
- High-voltage DC (HVDC) backup power for telecom hubs and data centers
- N+1 redundant parallel configurations for high-capacity DC charging systems

FAQ
Q1: What input supply does the module require?
A three-phase 380VAC power supply with a range of 323–456VAC (-15% ~ +20%) and a frequency of 45–55Hz is required, compatible with standard AC auxiliary power in substations and power plants.

Q2: What is the output voltage? Does it fit a 220V DC system?
The output is adjustable from 176–300VDC with a nominal rating of 220/230VDC, fully compatible with conventional 220V DC panels. The output can be set according to the battery string's float and equalize charge voltage requirements.

Q3: Can multiple modules operate in parallel?
Yes. Modules support live hot-swap parallel operation with a current-sharing imbalance of ≤±3%, enabling N+1 redundant systems with uninterrupted supply during expansion or module replacement.

Q4: Which communication protocols are supported? Can the module be monitored remotely?
A standard RS-485 interface is provided, with an optional CAN bus. The module can be connected to the DC panel monitoring unit and the station automation system for full "four-remote" SCADA monitoring and remote parameter configuration.

Q5: What protection functions does the module provide?
Input over/under-voltage, output overvoltage (dual hardware and software protection), overcurrent limiting, self-recovering short-circuit, over-temperature and phase-loss protection. Insulation strength between input, output and chassis is 2100VAC, and the module is CE certified.