An independent embedded DC power system 48VDC 300A-600A can be flexibly provided for any indoor site or outdoor telecom power cabinet if required. Acting as a reliable base station power system, its maximum capacity ranges from 18kW (200A) to 36kW (600A). Based on a new generation rectifier power supply module, it delivers exceptional high efficiency and power density to save electricity and footprint for customers.
Due to its standard 19-inch embedded power structure, this system can be installed seamlessly into various setups. Basic components of the sub-rack include a versatile distribution unit, a smart control unit (SMU), and hot-swappable slots for 6 (200A) to 12 (400A) rectifiers. Low voltage disconnect (LVD) is included for discharge time improvement and optimal battery health. Furthermore, the distribution section of the plant is strategically split into two branches of circuit breaker positions, where the current in each branch is precisely monitored by the controller.
The independent 48VDC (300A/600A) embedded DC power system is a highly efficient, high-power-density digital power solution designed for standard 19-inch racks. Available in 5U (up to 18kW) and 12U (up to 36kW) configurations, it seamlessly integrates R4850G2 rectifier modules, advanced power distribution, and the SMU48B intelligent monitor unit to ensure reliable and continuous operation for telecom sites.
Electrical Schematic diagram
600A Power Frame View
| Product Type | 12U System | |
|---|---|---|
| System | Dimension (width, depth and height) | 483mm(W) × 365mm(D) × 533mm(H) |
| Installation mode | Installed on 19-inch rack or cabinet | |
| Maintenance Mode | Front | |
| Weight | ≤35kg（without rectifiers） | |
| input | Input Mode | Three-phase four-wire system 380V(compatible 220 V AC single phase ) |
| Input Frequency | 45-66 Hz, rated value:50/60Hz | |
| Input Capacity | 1*125A/4P（MCB） | |
| SPD | Level C | |
| Output | Output Voltage | 43.2-58 VDC, rated value: 53.5 VDC |
| Maximum Capacity | 36KW（176VAC~300VAC） 18~36KW（85VAC~175VAC Linear derating） |
|
| Peak efficiency | 96.2% | |
| Voltage stabilization accuracy | ≤±0.6% | |
| Output rated current | 600A(MAX) | |
| Output interface | Battery Breakers: 8 * 125A LLVD interface: 10*125A,2*125A BLVD interface: 9*63A,2*16A,2*16A |
|
| DC SPD | Level C | |
HMU48B Monitoring module (hereinafter referred to as “HMU48B") is a small monitoring unit, mainly for different Types Check the operating status of the power system and control the operation of the power system. Provide rich interfaces such as sensor interface, CAN connection The port, RS 485 interface, input / output dry contact interface, etc., can be used to manage the site environment and alarm reporting. It can be provided at the same time Remote communication with the third partynetwork management supporting the general protocol to manage the power system remotely.
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Monitoring Module(SMU48B)
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Signal input | 2-way analog quantity input(Battery And environment temperature) Sensor interface: temperature and humidity interface * 1 smoke interface * 1 water interface * 1 door interface * 1 6 Number dry contact input |
| Alarm output | 8 –way dry contact point | |
| Communication port | RS485/FE (SNMP ; Modbus) | |
| Log Storage | Up to 1,000 historical alarm records | |
| Display mode | LCD 128*48 | |
| environment | Operating Temperature | -25℃ to +75℃ (-40℃ Startable) |
| Storage Temperature | -40℃ to +70℃ | |
| Operating humidity | 5% - 95% (non-condensing) | |
| Altitude | ≤ 3000 m (When the altitude ranges from 3000 m to 5000 m, the operating temperature decreases by 1° C for each additional 200 m.) |
| Item | Specifications |
|---|---|
| Detection features | AC and DC information detection |
| Rectifier module and solar module information detection | |
| Battery information detection | |
| Battery high and low temperature alarm | |
| Environmental temperature and humidity, battery temperature, door magnetic, smoke, water flooding and other environmental information detection | |
| 6-way dry contact input signal detection / Battery, load fuse detection | |
| Management features | Battery charging and floating charge management / Battery temperature compensation |
| Battery charging and current-limiting management | |
| Battery low-voltage under-power protection | |
| Battery test management / Battery residual capacity detection | |
| Level 5 is an independent power-down management / Two user down modes (time / voltage) | |
| 4 user power metering (charge power metering) / Save the user's power information regularly | |
| Warning management | The alarm can be associated to the output dry contact, support 8 output dry contact, can be set to open normally |
| The alarm level can be set (emergency / off) / Remind the user through the indicator light, alarm sound (optional enable / prohibit) | |
| 1,000 historical alarm records | |
| Intelligent interface | 1 north FE interface, total protocol 1 south-facing RS485 interface to manage the connected equipment |
HHY4850G1 Rectifier is a high efficiency, high power density of the digital rectifier module, to achieve a wide range of voltage input, 53.5V DC has the default output. It has the advantages of soft start function, perfect protection function, low noise, and parallel use. Through power supply monitoring, it realizes the real-time monitoring of rectification module status and load and output voltage regulation function.
Item  |
Specifications | Item | Specifications |
|---|---|---|---|
| productiveness | ＞96%（230V AC, 50%load） | working voltage | 90V AC~300V AC |
| Dimension | 40.5mm×105mm×281mm | frequency | 45Hz~66Hz, the rated value：50Hz/60Hz |
| Weight | ＜2kg | Rated input current | ≤19A |
| Cooling mode | forced air cooling | power factor |
≥0.99（100%load） ≥0.98（50%load） ≥0.97（30%load） |
| Input over pressure protection | ＞300V AC, recovery range：290V AC~300V AC | THD |
≤5%（100%load） ≤8%（50%load） ≤12%（30%load） |
| Input the undervoltage protection | ＜80V AC, recovery range：80V AC~90V AC | output voltage | 42V DC~58V DC, rated value：53.5VDC |
| Output is provided for short-circuit protection | Long-term short circuit, short circuit disappear can be restored | Stable pressure accuracy | -0.5/0.5(%) |
| Output overvoltage protection | Range：59.5VDC | output power | 3000W（176AC~300VAC） 1500W~3000W（90~175VAC linear decrease） |
| Start time | ＜10s | The output holds the time | ＞10ms |
| noise | ＜55dBA | MTBF |
10^5 hours |
Real-world deployment view of the 12U power system configuration within the integrated outdoor cabinet.
Showcase of the 12U power system configuration, providing ample space for equipment and battery integration.
12U System Application (2)
Detailed view of the 12U deployment layout, highlighting the modular internal structure and organized space management.
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