ESTEL (GUANGDONG) TECHNOLOGY CO., LTD.
| Payment Terms | L/C, D/A, D/P, T/T, Western Union |
| Supply Ability | 5,000 sets per month |
| Delivery Time | 20-25 working days |
| Packaging Details | carton/wooden case |
| Dimension | 482.6(W)*350.0(D)*6U(H) |
| Weight | ≤30kg (without rectifiers) |
| Rectifier Power | 30kw |
| Rectifier Module | 10*3KW |
| SNMP | Support |
| RS485 | Support |
| Customizable | Yes |
| Package | Carton/wooden case |
| Brand Name | ESTEL |
| Model Number | ET48750 |
| 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 | 5,000 sets per month |
| Delivery Time | 20-25 working days | Packaging Details | carton/wooden case |
| Dimension | 482.6(W)*350.0(D)*6U(H) | Weight | ≤30kg (without rectifiers) |
| Rectifier Power | 30kw | Rectifier Module | 10*3KW |
| SNMP | Support | RS485 | Support |
| Customizable | Yes | Package | Carton/wooden case |
| Brand Name | ESTEL | Model Number | ET48750 |
| Certification | ISO9001, CE, 3C, FCC | Place of Origin | Shenzhen, China (Mainland) |
| High Light | AC48V telecom power system with SNMP ，750A DC power system for base stations ，RS485 supported telecom power system | ||
Product Overview
The ET48750-M7E106 DC rack power system is a high-capacity, carrier-grade power conversion platform engineered for core telecom nodes, large-scale data centers, and mission-critical industrial facilities where power continuity is essential. It interfaces via terminal blocks—configured as L1×3, L2×2, L3×2, and N×6—to support AC inputs. The system delivers a precisely regulated DC output adjustable from –43VDC to –58VDC, with a nominal setpoint of –53.5VDC. Rated at a full 30kW output capacity, it sustains conversion efficiency above 96% even under heavy load, significantly reducing energy loss and operational expenditure.
The architecture is fully modular and fault-tolerant, supporting up to ten 3000W hot-swappable rectifier modules in an N+1 or higher redundancy scheme. Each rectifier module weighs under 2kg and leverages forced-air cooling alongside advanced power factor correction (≥0.99) and very low total harmonic distortion (THDi ≤5%), ensuring grid-friendly operation and consistent power quality. The entire system is housed in a 6U-high chassis built to fit standard 19-inch racks. Front-access hot-swap maintenance and top-panel cable routing simplify installation and field service, while the IP20-rated enclosure protects against accidental contact and ingress of solid foreign objects.
Power distribution is managed through an integrated DC panel that supports both LLVD (load low-voltage disconnect) and BLVD (battery low-voltage disconnect), allowing prioritized load shedding and extended battery runtime during outages. System intelligence is handled by a dedicated controller equipped with four analog sensor inputs, eight digital status inputs, and seven programmable dry-contact alarm relays. Comprehensive remote management is enabled via RS232, RS485, and SNMP, giving operators full visibility and control over power parameters, alarms, and rectifier status. Local configuration and real-time monitoring are facilitated through an integrated front-panel LCD display.
Designed for deployment in physically demanding environments, the system operates continuously across an ambient temperature range of –40°C to +65°C and withstands relative humidity from 5% to 95% (non-condensing). It also delivers full output power without derating at altitudes up to 3000 meters. Combining scalable modularity, intelligent load management, and industrial-grade resilience, the ET48750-M7E106 offers a robust, future-proof DC power infrastructure for applications where downtime is not merely costly but operationally unacceptable.
| Type | ET48750 | |||
| System | Dimension | 482.6(W)*350.0(D)*6U(H) | ||
| Weight | ≤30kg (without rectifiers) | |||
| Cooling mode | Natural cooling | |||
| Installation mode | Installed on 19-inch rack | |||
| Cabling mode | Top inlet and top outlet | |||
| Maintenance mode | Front maintenance, support module grade change | |||
| Protection level | IP20 | |||
| AC Distribution |
Input mode | Terminal bloL1×3, L2×2, L3×2, and N×6 | ||
| Input frequency | 45~65Hz, rated value: 50Hz/60Hz | |||
| DC Distribution |
Output voltage | -43~-58VDC, rated value: -53.5VDC | ||
| Maximum capacity | 30kw(10*3000w, N+1 redundancy) | |||
| Battery breakers | RTN+ BATT-busbars | |||
| Load breakers |
LLVD: Circuit Breaker 6*125A/1PN + 3*≤125A/1PN (reserved slots) BLVD: RTN+GND-busbars |
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| Rectifier | Input voltage | 85VAC～300VAC, rated 220VAC | ||
| Efficiency | >96% | |||
| Rated power | 3000W(176~300VAC) | |||
| Working temperature | -40℃~+75℃(fully output below 50℃) | |||
| Dimension | 106.5mm(W)×286mm(D)×41.5mm(1U/H) | |||
| Weight | ≤2kg | |||
| Cooling mode | Forced cooling | |||
| Power factor | ≥0.99 | |||
| THD | ≤5% | |||
| DC output | –43 ~ –58VDC, rated –53.5VDC, maximum 55A | |||
| Controller | Signal input | 4 AI(3ambient temp, 1 humidity) ,8 DI | ||
| Alarm output | 7 dry contact | |||
| RS232 | Yes | |||
| RS485 | Yes | |||
| SNMP | Yes | |||
| Display mode | LCD | |||
| 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.) |
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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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