Import Ac/Dc Rectifier Battery Charger 50-750vdc — Buy in wholesale FOB from Supplier in China

The SANDI SERIES AC/DC rectifier battery charger from Zhejiang Sandi Electric Co., Ltd., headquartered in Yueqing Economic Development Zone, Zhejiang Province, China, is a power module designed for electric vehicle charging station infrastructure. It accepts single-phase non-neutral conductor AC input and delivers regulated DC output across a 50-750 VDC range, with a typical power rating of 20 kW at nominal input. The module employs semiconductor-grade silicon switching devices, copper windings, and aluminium heat sinks. Key control features include hot-plug capability for maintenance without system shutdown, automatic current sharing with unbalance below plus-minus 0.5 A, and output voltage regulation in 0.1 VDC steps via external monitoring.

The power topology achieves high efficiency and power density with low harmonic distortion on the input side, though the source does not quote exact efficiency percentages or THD figures. The input voltage operating window is 260-450 VAC, with derated output below 320 VAC and full 20 kW available from 360-450 VAC. Protection systems cover input over/undervoltage, output overvoltage (threshold 260-770 VDC, default 778 VDC), over-temperature shutdown at 80 degrees C ambient with 100 degrees C board-level cutoff, internal bus fault, and short-circuit protective shutdown with fault indication. The cooling system uses a processor-controlled variable-speed fan. Two operating modes are selected automatically based on demand voltage rather than actual output voltage.

This charger module targets Level 2 and DC fast charging applications for commercial and industrial EV infrastructure, with typical system configurations using multiple modules in parallel for higher total power. Buyers include charging station OEMs, fleet operators, and infrastructure developers in markets with growing EV adoption. The 50-750 VDC range accommodates both older 400V architecture and newer 800V platform vehicles, though the upper end of this range suggests compatibility with light commercial vehicles. Zhejiang Sandi Electric Co., Ltd. does not state MOQ, pricing, or lead times in the source data, and buyers must confirm these directly along with warranty terms, calibration certificates, and whether firmware updates are included in the support package.

Zhejiang Sandi Electric Co., Ltd. is located at Building 13-2 Botong Huigu, No. 66 Binhai South Four Road, Yueqing Economic Development Zone, Yueqing City, Zhejiang Province, 325600, China. The company holds a harbor trust tier designation on the platform, with a recorded response rate of 0.00 percent and zero average response hours, indicating no active communication data is available through this channel. The supplier specialises in power electronics for electric vehicle charging infrastructure, as evidenced by the SANDI SERIES product line.

The supplier profile does not disclose year of establishment, factory size, annual revenue, employee headcount, or named clients. No certifications such as ISO 9001, IATF 16949, or product-specific marks are listed in the source material. The address places the company in Yueqing, a known cluster for low-voltage electrical equipment manufacturing in China. Buyers should request company registration documents, quality system certificates, and reference installations before committing to volume orders, particularly for EV infrastructure projects where after-sales support and spare parts availability are critical.