Product Introduction
TONHE customizable rectifier charging module is the core power unit for DC screen (DC operating power supply system). Adopting high-frequency soft-switching digital power technology, it converts AC to stable DC to charge backup batteries and supply continuous DC power for protection, control & signal loops in power stations and substations.
Key Features
- Customization Support: Adjustable output voltage/current, communication protocol, rated power, cooling method and coating treatment. Tailored for Middle East high-temperature, dust & Southeast Asia high-humidity salt fog environments.
- High Efficiency: Peak efficiency ≥95%, low energy consumption; full digital control, high precision, low ripple coefficient.
- Comprehensive Protection: Input over/under voltage, output overvoltage, overcurrent, short circuit, over-temperature, fan fault protection, auto alarm and recovery.
- Parallel Redundancy: Multiple modules hot-parallel, even current ≤5%; hot swap, easy maintenance without system shutdown.
- Wide Operating Temperature: -40℃ ~ +75℃. Optional potting / conformal coating for harsh climate.
- Communication: Built-in RS485 / Modbus, compatible with DC screen monitoring unit for remote data upload and parameter setting.
- Certification: CE, relevant IEC standards, ready for Middle East & Southeast Asia export.
Main Parameters (General Version)
- AC Input: 220VAC / 380VAC, wide input tolerance
- DC Output: 110VDC / 220VDC (customizable)
- Cooling: Fan cooling (liquid cooling optional)
- MTBF: ≥500,000h
- Installation: Standard 19-inch rack mounting
About TONHE
Shijiazhuang Tonhe Electronic Technology Co., Ltd. (TONHE TECHNOLOGY, stock code: 300491) is a national high-tech enterprise founded in 1998, listed on ChiNext in 2015.
We focus on power electronic R&D, manufacturing and system energy solutions. With over 280 patents and 70+ software copyrights, nearly 30% of staff are R&D engineers. Our business covers smart grid, new energy, aerospace, energy storage and thermal management.
TONHE power supply modules have been exported to over 30 countries. We have rich project experience serving power grid, substation, industrial & infrastructure projects across Middle East and Southeast Asia, with stable supply chain and localized technical support capability.
Application Scenarios
Designed for DC screen / DC operation power system, widely used for export projects in Middle East & Southeast Asia:
- Power substation, power plant, distribution cabinet: DC power for relay protection, circuit breaker control, emergency signal.
- Oil & gas field, desert power station (Middle East): anti-dust, high-temperature resistant customized modules.
- Railway, metro & tunnel power distribution.
- Industrial factory, mining, water treatment plant.
- Telecom base station, data center backup DC power.
- Solar / microgrid off-grid & hybrid power stations in Southeast Asia islands.
Service Advantages
- Customized Development: Adjust voltage, power, coating, communication and mechanical size according to local grid & environment requirements. Anti-salt spray, anti-dust, high-temperature reinforced version available.
- Export Documentation Support: Provide CE test report, commercial invoice, packing list, certificate of origin (Form E etc.), inspection documents for customs clearance of Middle East & SEA.
- Stable Delivery & Quality Control: Mass production factory, strict aging test for every module, short lead time for bulk orders.
- Global Technical Support: English manual, remote debugging guidance, overseas after-sales training; spare parts supply plan for regional projects.
- Modular Maintenance: Hot-swappable design. Failed module replacement without whole system shutdown, low maintenance cost.
- Long Lifecycle Supply: Long product lifecycle, spare parts available for many years, good for long-term infrastructure projects.
FAQ
A: Yes. Standard module works up to 75℃. We offer customized potting and high-temperature derating version for desert, high dust environment. Conformal coating option protects circuit boards from sand and humidity.
A: CE certification, IEC test reports. We can assist to prepare documents for local customs and tender requirements, including Form E certificate of origin for ASEAN countries.
A: Yes, support hot parallel redundant operation. Quantity depends on total DC screen capacity, auto current sharing function. Fault module will exit automatically without affecting the whole system.
A: Standard RS485 with Modbus-RTU. We can customize protocol to match customer’s existing monitoring unit. Real-time upload voltage, current, temperature, fault alarm.
A: Standard 2-year warranty. Extended warranty is negotiable for large EPC projects. We supply spare parts and remote technical guidance.
A: Yes. 110VDC and 220VDC are mainstream options, other voltage grades can be customized upon request.
A: Small sample orders are acceptable. Bulk order lead time depends on customization degree, we will confirm schedule after technical specification confirmation.
