Custom DC48V 1U Smart Power Supply Telecom Power Supply with Battery Management
Custom DC48V 1U Smart Power Supply Telecom Power Supply with Battery Management
Product Overview of 1U 48VDC Smart Telecom Power Supply
The ET4860-M3J21A is a rugged 6kW DC power system built for telecom exchanges, data centers, and industrial facilities that demand high-availability power distribution. It runs off a 220VAC single-phase 63A/1PN supply and produces a regulated DC output adjustable from –43VDC to –58VDC, nominally set at –53.5VDC. Even at full load, the system maintains conversion efficiency above 96%, making it well suited for energy-sensitive, high-density deployments.
Designed with modular redundancy in mind, the unit accepts up to two 3000W hot-swappable rectifier modules in an N+1 configuration. Each module weighs less than 2kg and relies on forced-air cooling to maintain stable performance. Thanks to a near-unity power factor (≥0.99) and low total harmonic distortion (THDi ≤5%), the rectifiers deliver clean power while minimizing stress on upstream infrastructure. Housed in a 1U chassis that fits standard 19-inch racks, the system features front-access servicing and top-panel cable entry, with an IP20 rating that safeguards against accidental contact.
| Type | ET4860-M3J21A | |||
| System | Dimension | 482.0(W)*350.0(D)*1U(H) | ||
| Weight | ≤10kg (without rectifiers) | |||
| Cooling mode | Natural cooling | |||
| Installation mode | Installed on 19-inch rack or inside the cabinet | |||
| Cabling mode | Top inlet and top outlet | |||
| Maintenance mode | Front maintenance, support module grade change | |||
| Protection level | IP20 | |||
| AC Distribution |
Input mode | 220VAC single-phase 63A/1PN | ||
| Input frequency | 45~65Hz, rated value: 50Hz/60Hz | |||
| DC Distribution |
Output voltage | -43~-58VDC, rated value: -53.5VDC | ||
| Maximum capacity | 6kw(2*3kw, N+1 redundancy) | |||
| Battery breakers | 1*100A/1PN | |||
| Load breakers | BLVD: 2*32A/1PN+2*63A/1PN | |||
| 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 (3 ambient temp, 1 humidity), 8 DI | ||
| Alarm output | 8 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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Controller of 1U 48VDC Smart Telecom Power Supply
MC2900 is the latest generation DC power controller developed by ESTEL. It is based on ARM Cortex-A8 CPU,256M flash,512M SRAM and Linux operating system. MC2900 offers a more robust, user-friendly, and easy-to-use interface. The controller provides powerful management functions forrectifiers, solar modules, wind modules, DC/DC modules, HVDC modules, diesel, VRLA batteries andlithium-ion batteries.
DI/DO of 1U 48VDC Smart Telecom Power Supply
The onboard controller comes with 3 analog sensor inputs, 8 digital status inputs, and 8 configurable dry-contact relays for alarm handling. For remote oversight, RS485 and SNMP interfaces are both available, while the built-in LCD screen enables on-site configuration and real-time status checks without external tools.
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