The Delta DPR 2900B-48 is an industrial-grade, hot-swappable single-phase switch-mode rectifier module engineered with advanced resonant soft-switching topology and active PFC. Supporting a wide 90V AC to 300V AC input range, it delivers a nominal 53.5V DC (adjustable 42V to 58V DC) and up to 2900W/50A of clean, ultra-low ripple DC power tailored for telecommunications and critical infrastructure.
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A high-density standardized card-type power unit comprising an active PFC boost stage and an isolated high-frequency DC-DC converter. Its rear interface utilizes an integrated blind-mate blind-insertion connector combining AC input, high-current DC output, analog load share, and digital CAN bus signaling, backed by intelligent temperature-controlled forced-air front exhaust.
Eliminates network downtime caused by unstable grids, brownouts, and voltage surges, while mitigating harmonic distortion fed back into local transformers; its smooth constant-power and constant-current output envelope protects battery arrays from excessive thermal stress during post-discharge bulk recharging cycles.
Telecommunication central offices (CO), cellular macro base stations (BTS/NodeB), Delta DPS 2900 series rack expansion, enterprise IT data centers, railway signaling automation, and industrial SCADA DC distribution networks.
| Key specifications | Value |
|---|---|
| Rated Output Power | 2900W (50A @ 58V DC) |
| DC Output Voltage | -48VDC (-42V ~ -58V) |
| Rated Output Current | 50A Continuous Constant Current Output |
| AC Input Voltage Range | 90V AC ~ 300V AC (Nominal 220V AC) |
| Cooling Method | Built-in Intelligent DC Exhaust Fan |
| Power Conversion Efficiency | ≥ 92% |
| Power Factor & THD | ≥ 0.99 (High Power Factor Low Grid Pollution) |
| Operating Temperature Range | -40°C to +70°C |
Delta
The Delta DPR2900B-48 is an industry-standard 1U hot-swappable telecom rectifier module delivering -48V 50A (2900W) at >95% efficiency, engineered for extreme reliability across global wireless stations.
Carrier-grade industrial high-frequency switch-mode power supply designed for high-efficiency AC/DC conversion, bus regulation, and intelligent battery management.
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