DC48V 3U BTS Telecom Rectifier Systems with RS485 Remote Monitoring

Product Overview of 3U BTS Telecom Rectifier System

The ET48300-M5E63 is a DC rack power system developed by ESTEL,  provides a high-capacity, resilient DC power solution designed specifically for telecommunications infrastructure, data center operations, and industrial applications requiring dependable DC power distribution. It accepts 380VAC (compatible for single-phase and three-phase) and delivers a stable DC output adjustable between –43VDC to –58VDC, with a nominal operating point of –53.5VDC. Offering a maximum output capacity of 18kW, this system reliably supports high-demand installations while achieving power conversion efficiency exceeding 96%.

The DC distribution panel is equipped with 1*250A battery circuit breakers and includes LLVD & BLVD functionality for secure and flexible power management. System intelligence is provided by a dedicated controller featuring 3 analog sensor inputs, 7 digital status inputs, and 6 configurable dry-contact alarm relays. Remote monitoring and management are enabled via RS232/485 and SNMP interfaces, while an integrated LCD display allows for local status viewing and configuration.

AC Specification of 3U BTS Telecom Rectifier System

Input mode: 380VAC, compatible with both single-phase and three-phase configurations

Input frequency: 45Hz to 65Hz (rated 50Hz/60Hz) 

DC Specification of 3U BTS Telecom Rectifier System

Output voltage: -43V to -58VDC (rated -53.5VDC)

Maximum capacity: 18kW (6 x 3kW rectifier modules, N+1 redundancy)

Battery breaker: 1 x 250A

Load breakers of 3U BTS Telecom Rectifier System

LLVD: 1 x <125A/1PN (reserved)

BLVD: 6 x ≤63A/1PN + 2 x ≤125A/1PN (reserved)

Rectifier Module of 3U BTS Telecom Rectifier System

Input voltage: 85VAC ~ 300VAC (rated 220VAC)

Efficiency: >96%

Rated power: 3000W (176~300VAC)

Cooling mode: Forced cooling

Power factor: ≥0.99

THD: ≤5%

DC output: -43 ~ -58VDC (rated -53.5VDC), maximum 55A

Structure of 3U BTS Telecom Rectifier System