The Bright Star MSD-AC90036E UPS+PS switching power supply with battery charger provides 900 W output, high efficiency, and built‑in UPS protection.
The MSD-AC90036E is a UPS+PS switching power supply with an integrated battery charger designed for continuous operation of terminal equipment. It accepts a 180‑240 VAC input and delivers a regulated +36 V, 25 A output with up to 900 W rated power.
Key features include online single‑conversion efficiency above 90 %, built‑in UPS functionality that switches to battery mode when AC voltage falls below 187 V, multiple protection mechanisms (OPP, SCP, battery low‑voltage), and an RS‑232 communication interface for remote monitoring and control. The unit is compact (260 × 136 × 70 mm) and operates from –20 °C to 55 °C. This manual is written in Chinese.
| Rated Power | 900 W |
|---|---|
| Output Voltage | +36 V |
| Output Current | 25 A |
| Efficiency (AC) | ≥90 % |
| Efficiency (DC) | ≥92 % |
| Input Voltage | 220 VAC |
| Input Voltage Range | 180 V ~ 240 VAC |
| Frequency | 47 Hz ~ 63 Hz |
| Operating Temperature | -20 °C ~ 55 °C |
| Storage Temperature | -40 °C ~ +85 °C |
| Dimensions | L260 × W136 × H70 mm |
| Output Protection (OPP) | 120 % ~ 160 % (hiccup mode) |
| Power Factor | ≥0.9 @ 50 % load |
| Ripple | ≤200 mV |
The unit accepts an input voltage range of 180 V to 240 VAC.
When the AC mains voltage falls below 187 V, the system switches to battery mode and signals a low‑voltage condition.
It includes output protection (OPP) at 120 %‑160 % with hiccup mode and short‑circuit protection (SCP) that recovers after troubleshooting.
Yes, the RS‑232 interface allows a host computer to read status signals and issue commands such as forced emergency, monthly inspection, and annual inspection.