ESTEL (GUANGDONG) TECHNOLOGY CO., LTD.
| Payment Terms | L/C, D/A, D/P, T/T, Western Union |
| Supply Ability | 3,000 sets per month |
| Delivery Time | 25-30 working days |
| Packaging Details | wooden case/carton |
| Size | 482mm*350mm*2U(W*D*H) |
| Weight | ≤11kg (without rectifiers) |
| Input Voltage | 220VAC single-phase |
| Output Voltage | -48VDC (-42 to -58VDC) |
| Output Current | 90A(max) |
| Module Efficiency | ＞94% |
| Application | Telecommunication, data center |
| Installation | 19-inch rack mount |
| Brand Name | ESTEL |
| Certification | ISO9001, CE, 3C, FCC |
| Place of Origin | Shenzhen, China (Mainland) |
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Product Specification
| Payment Terms | L/C, D/A, D/P, T/T, Western Union | Supply Ability | 3,000 sets per month |
| Delivery Time | 25-30 working days | Packaging Details | wooden case/carton |
| Size | 482mm*350mm*2U(W*D*H) | Weight | ≤11kg (without rectifiers) |
| Input Voltage | 220VAC single-phase | Output Voltage | -48VDC (-42 to -58VDC) |
| Output Current | 90A(max) | Module Efficiency | ＞94% |
| Application | Telecommunication, data center | Installation | 19-inch rack mount |
| Brand Name | ESTEL | Certification | ISO9001, CE, 3C, FCC |
| Place of Origin | Shenzhen, China (Mainland) | ||
| High Light | 48V90A telecom power supply ，94% efficient DC power solution ，compact telecom infrastructure power system | ||
48V90A 94% Compac DC Smart Power Supply Solution for Telecommunication Data Center
Product Overview
The ET series rectifier is a DC48V90A power system operating at 48V, engineered to ensure reliable power distribution for telecommunications infrastructure, data centers, and industrial applications where uninterrupted operation is critical. It operates from a 220V AC single-phase input and delivers a tightly regulated DC output ranging from –43V DC to –58V DC, with a nominal value of –53.5V DC. Achieving over 94% conversion efficiency even under full load, this system is ideal for energy-efficient, high-density installations.
Designed for Continuous Operation with Modular Flexibility
Engineered with redundancy in mind, the system supports up to three hot-swappable 1740W rectifier modules in an N+1 configuration. Each module weighs under 1.5 kg and utilizes forced-air cooling for consistent thermal management. With advanced power factor correction (≥0.99) and low total harmonic distortion (THDi ≤5%), it ensures clean output power while minimizing stress on upstream equipment. The unit is housed in a 2U, 19-inch rack-mountable chassis rated IP20, enabling front-access maintenance and convenient top-side cable routing.
Advanced Control and Load Management
The integrated distribution panel includes BLVD functionality to support flexible load prioritization. An intelligent onboard controller provides extensive monitoring and configuration capabilities through 2 ambient temperature sensor inputs, 8 digital inputs, and 2 programmable dry-contact relay outputs for alarm signaling. Remote management is enabled via RS485 and SNMP interfaces, while a inserted LCD screen facilitates local setup and real-time system monitoring.
Rugged Performance in Demanding Environments
Built to withstand extreme conditions, the rectifier delivers full performance without derating across an ambient temperature range of –40°C to +65°C and relative humidity from 5% to 95% (non-condensing). It also sustains full output power at altitudes up to 3000 meters. Combining space-efficient scalability, intelligent power management, and rugged durability, the ET series offers a future-ready DC power foundation for critical operations where reliability is paramount.
Specification
| Type | Telecom DC48V Power Distribution Unit | |||
| General | Size | 482mm*350mm*2U(Width*Depth*Height) | ||
| Weight | ≤11kg (rectifiers excluded) | |||
| Cooling method | Natural cooling | |||
| Installation method | 19-inch rack-mounted | |||
| Cabling mode | Inlet and outlet from the top | |||
| Maintenance mode | From front side, support module grade change | |||
| Protection grade | IP20 | |||
| AC Input |
Voltage |
Single-phase 220VAC | ||
| MCB | 1 x 40A 2P | |||
| Frequency | 45Hz to 65Hz, rated value: 50Hz/60Hz | |||
| DC Distribution |
Output voltage | -43~-58VDC, rated value: -53.5VDC | ||
|
Output Current(max)
|
90A | |||
|
Battery breaker
|
1 x 63A 1P | |||
| BLVD |
2*10A/1P+2*16A/1P+2*20A/1P+1*40A/1P |
|||
| Rectifier Module | Input voltage | 85VAC～300VAC, rated 220VAC | ||
| Efficiency | >94% | |||
| Rated power | 1740W(176~300VAC) | |||
| Working temperature | -40℃~+75℃(fully output below 50℃) | |||
| Dimension | 106.5mm(W)×286mm(D)×41.5mm(1U/H) | |||
| Weight | ≤kg | |||
| Cooling mode | Forced cooling | |||
| Power factor | ≥0.99 | |||
| THD | ≤5% | |||
| DC output | –43 ~ –58VDC, rated –53.5VDC, maximum 55A | |||
| Controller | Signal input port | 2 x AI(2 ambient temp) , 8 x DI | ||
| Alarm output port | 2 x dry contact | |||
| Communication port | RS485, SNMP | |||
| LCD Display | Supported | |||
| Environment | Operating temperature |
-40℃ ~ +65℃ (full output below 50℃) | ||
| Storage temperature | -40℃~+70℃ | |||
| Operating humidity | 5%~95%(non-condensing) | |||
| Altitude | 0~3000m(If the altitude is within the range of 2000m to 3000m, the maximum operating temperature decreases by 1℃ as the altitude increases by 200m.) |
|||
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Year Established:
2002
Total Annual:
15 Million-20 Million
Employee Number:
101~200
Ecer Certification：
Verified Supplier
Introduction ESTEL(GUANGDONG)TECHNOLOGY CO., LTD, located in China, is a professional supplier of integrated outdoor telecom cabinet and temperature control solutions for outdoor telecom base station. As a science and technology innovative company, we engage in the R&D, manufa... Introduction ESTEL(GUANGDONG)TECHNOLOGY CO., LTD, located in China, is a professional supplier of integrated outdoor telecom cabinet and temperature control solutions for outdoor telecom base station. As a science and technology innovative company, we engage in the R&D, manufa...
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