
High-efficiency DC to AC conversion for railway rolling stock, compatible with 24V/48V/72V/110V DC input systems.

Designed for high-vibration train environments with industrial-grade isolation and wide temperature tolerance.

Stable auxiliary power for onboard lighting, HVAC, communication and passenger information systems.

Integrated lithium battery energy storage inverter for metro, light rail and intercity train applications.
Nagoya, Japan's fourth-largest city and the industrial heartland of the Chubu region, is home to one of the world's most advanced railway and automotive manufacturing ecosystems. The city's extensive rail network — including the Nagoya Municipal Subway, Meitetsu lines, JR Tokai intercity routes, and the pioneering Linimo maglev system — represents a significant and growing demand for high-reliability train inverter technology.
As Nagoya continues to invest in railway modernization ahead of the 2027 Linear Chuo Shinkansen opening, the demand for next-generation train inverters, auxiliary power units (APUs), and energy-efficient traction systems has accelerated substantially. Local operators require inverters that meet Japan's stringent JIS and EN standards while offering superior performance in the region's humid subtropical climate.
Bangzhao Electric (Sandi Electric) has established a dedicated supply chain and technical support network to serve Nagoya-based railway operators, rolling stock manufacturers, and system integrators — offering factory-direct pricing, rapid customization, and certified compliance with international railway standards.
Our train inverters are engineered to withstand the demanding operational conditions of Japan's railway environment — from high-frequency vibration and electromagnetic interference to extreme temperature fluctuations — delivering uninterrupted power quality for critical onboard systems.
Japan's national carbon-neutrality goals are accelerating the replacement of diesel rolling stock with electric and hybrid trains, driving demand for advanced DC-AC inverter systems across the Nagoya network.
Modern Nagoya rail operators are integrating IoT-enabled power management systems. Our inverters support remote monitoring, predictive maintenance alerts, and real-time efficiency optimization.
The Nagoya subway and Linimo maglev systems are pioneering regenerative energy recovery. Our bi-directional PCS inverters enable efficient energy capture and redistribution across the traction network.
The upcoming maglev line connecting Nagoya to Tokyo and Osaka requires ultra-high-reliability power electronics. Our R&D team is actively developing inverter solutions for next-generation maglev applications.
Nagoya's automotive and manufacturing giants — including Toyota, Denso, and Aisin — operate extensive internal rail and automated guided vehicle (AGV) networks requiring robust industrial inverter solutions.
Providing auxiliary power inverters for onboard lighting, air conditioning, passenger information displays, and door control systems across Nagoya's 6 subway lines and 87 stations.
High-reliability traction inverter support for JR Tokai's regional and Shinkansen services operating through Nagoya Station — one of Japan's busiest rail hubs.
Customized DC-AC inverter solutions for Meitetsu's extensive suburban and intercity network connecting Nagoya to Gifu, Toyota, and the Chita Peninsula.
Industrial train inverters for Toyota City's internal logistics rail systems, automated parts-delivery trains, and factory floor electric transport vehicles.
Marine-grade and explosion-proof inverter systems for Nagoya Port's cargo handling rail infrastructure — Japan's largest cargo port by trade value.
Precision power inverter systems for railway R&D centers and test tracks in the Chubu region, supporting next-generation rail technology development.
Bangzhao Electric Co., Ltd (Sandi Electric) is a company that was established in 2008 and specialized in developing and supplying of power products. The high performance of its products stems from the cutting-edge technology developed by the domestic top 100 engineers.
During the past 10+ years, we have been providing the best system solutions of Lithium battery storage system, PCS bi-directional energy storage power supply, Pure sine wave inverter, Marine inverter, Vehicle Inverter, Solar pump inverter, Explosion-proof inverter, PV Inverter-Controller Integrate, PV combiner box, Solar charge controller, AC-DC charger, Static phase converter etc. to customers. It is widely applied in the industry of solar energy, wind power, water power, car, ship, train, hospital, aviation, automation, etc.
We believe that through our continuous efforts and pursuit, we can become one of the most influential enterprises between domestic big-power inverter manufacturers.
Bangzhao Electric Co., Ltd (Sandi Electric) regard technological innovation and best service as the fundamental of business development. The annual technology development investment cost is more than 20% of the annual sales, with an experienced and top professional research and development team, obtained a number of certificate and patent of power products, we are cooperation supplier of many famous companies.
Facing today and the future, we will provide more professional and perfect services to the public who support and trust Bangzhao Electric (Sandi Electric).




A team with strong execution ability is a combative team. Action and execution determine the success or failure of an enterprise.


As a direct manufacturer, we eliminate middlemen to offer the most competitive pricing on all train inverter products with full quality control from production to delivery.

Every railway application is unique. We offer full OEM/ODM customization of train inverters to meet specific voltage, frequency, form factor, and certification requirements.

Dedicated technical support, spare parts supply, and on-site service capabilities ensure maximum uptime for your train inverter systems in the Nagoya region and beyond.

Our train inverters carry multiple international certifications including CCS, ISO, and CE — meeting the stringent quality and safety standards required by Japanese railway operators.

The system uses solar panels to convert solar energy into electricity, which is stored in batteries to provide a stable, clean supply of electricity for the lives of islanders. Its independence ensures energy self-sufficiency on remote islands, reducing dependence on traditional fossil fuels. Our industrial frequency off-grid inverters and photovoltaic controllers are sustainable and adapted to the harsh environment of the islands.
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It utilises new photovoltaic energy generation technology and oil pumping units to achieve green and efficient oil extraction. The system converts solar energy into electricity through photovoltaic modules to provide stable and continuous power support for oil pumps, eliminating the need to rely on traditional fossil fuels and greatly reducing gas emissions.
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Provide power for all electrical equipment on board. It needs to adapt to the complex environment at sea, ensure the stable operation of navigation, communication, living facilities, etc., frequency and voltage stabilisation, Low frequency isolation type, strong anti-interference ability, and conform to the approval of Classification Society CCS.
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The new energy charging pile energy storage system, integrating inverter charging and energy storage technologies, provides green charging solutions for electric vehicles. The system utilises clean energy such as solar and wind to generate electricity and stores it through energy storage equipment to ensure stable power supply to charging facilities.
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Solar water pumping system, using pure photovoltaic direct drive three-phase AC water pump, can be combined with utility power complementary. The system converts solar energy into electricity through solar panels, which is supplied to the water pump in real time to achieve efficient pumping for irrigation or water supply.
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Custom-engineered train inverter systems deployed for Nagoya regional rail operators, delivering stable auxiliary power for traction control, passenger comfort systems, and onboard electronics across diverse rolling stock configurations.
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High-frequency pure sine wave output for sensitive onboard electronics. DC 24V/48V/72V/110V input compatible.

Rugged inverter designed for high-vibration rail environments. Wide operating temperature range -40°C to +70°C.

Low-frequency isolation marine inverter with CCS classification society approval. Strong anti-interference capability.

Grid-connected and off-grid bi-directional inverter for lithium battery energy storage systems in rail depots.

PV-driven pump inverter for railway station water supply systems. MPPT control with utility power complementary function.

Ex-certified inverter for use in hazardous locations including rail tunnels, underground stations and mining railways.

High-efficiency three-phase AC-DC battery charger for locomotive and EMU auxiliary battery charging systems.

Modular lithium battery energy storage systems for railway depots and substations. Scalable from 50kWh to 1MWh+.