DC POWER SUPPLY FOR DATA CENTERS
Ideal for Optical communication, Router, and Server power supplies
Power management design for global environmental conservation to reduce data center electricity operation cost by 20%
By converting communication devices such as routers, Windows servers, UNIX servers, storage, PBXs, and DWDMs from alternating current (AC) to DC power feed, running costs can be reduced by as much as 20% by reducing power loss and heat generation. In addition, the simplification of equipment circuitry not only greatly improves reliability, but also allows power to be supplied directly from the battery in the event of a power failure or malfunction, further increasing the reliability of the system.
The Rnet series is a power supply that converts AC to DC for data centers developed to meet this need for DC. We were also the first to commercialize a 380 V output model that can also support "high-voltage direct current power supply (HVDC power supply).
All the models feature highly reliable and ultra-thin, through our leading expertise in high-power DC power supplies. In addition to low running costs due to high efficiency, the power supply's ultra-slim profile makes it easy to store telecommunications equipment and greatly contributes to improving the profitability of system providers.
FEATURES
-
380 Vdc output models with High-Voltage Direct Current (HVDC) power supply systems support future-ready "380 Vdc power supply" standard for servers and routers.
Rnet series 380V model -
Power factor of 0.99: Enables downsizing of power supply and transmission facilities, contributing to cost reduction.
RnetK/Rnet2K series - High efficiency for electricity saving
- Low heat generation and low-cost air cooling
- Low profile greatly contributing to more space for communication equipment to increase total saving
- High stability with circuit simplification
- High reliability increasing 10 times with parallel redundant operation (comparing to AC power supply system)
- Compact
- Multiple protections to overvoltage, overtemperature, overload, AC input failure, etc.
- Error alarms and signals
-
19-inch EIA/JIS rack supported.
23-inch rack mount (optional) please consult separately
Models
| Model | Output voltage [V] |
Output current [Amax] |
Output power [kW] |
Ripple [mVrms] |
|---|---|---|---|---|
| Rnet48-6 | 48 V ±1% fixed | 6 A | 0.29 kW | 20 mV |
| Rnet48-15 | 15 A | 0.75 kW | ||
| Rnet48-25 | 25 A | 1.2 kW | ||
| Rnet48-42 | 42 A | 2 kW | ||
| Rnet48-63 | 63 A | 3 kW | ||
| Rnet48-250 | 250 A | 12 kW | ||
| Rnet380-1 | 380 V ±1% fixed | 1 A | 0.38 kW | 50 mV |
| Rnet380-2 | 2 A | 0.76 kW | ||
| Rnet380-3 | 3 A | 1.14 kW | ||
| Rnet380-5 | 5 A | 1.9 kW | ||
| Rnet380-8 | 8 A | 3.04 kW | ||
| Rnet380-30 | 30 A | 11.4 kW | 200 mV | |
| RnetK48-33 | 48 V ±1% fixed | 33 A | 1.6 kW | 20 mV |
| RnetK48-60 | 60 A | 2.9 kW | 30 mV | |
| Rnet2K48-52 | 52 A | 2.5 kW |
- Discontinued Products
-
Sales of the following models ended in March 2025. We continue to support the products.
Model Output voltage
[V]Output current
[Amax]Output power
[kW]Ripple
[mVrms]RnetK54.6-30 54.6 V ±1% fixed 30 A 1.6 kW 20 mV RnetK380-4.2 380 V ±1% fixed 4.2 A 1.6 kW 90 mV Rnet2K48-60 48 V ±1% fixed 60 A 2.9 kW 30 mV Rnet2K48-100 100 A 4.8 kW
Specifications
RnetK/2K: AC to 48 Vdc converter models
- Input voltage
-
85 to 264 Vac, 50/60 Hz, Single-phase
180 to 264 Vac, 50/60 Hz, Single-phase
Rnet380: AC to 380 Vdc converter models
- Input voltage
-
90 to 110 Vac, 50/60 Hz, Single-phase
180 to 220 Vac, 50/60 Hz, Single-phase
180 to 220 Vac, 50/60 Hz, Three-phase
110 Vac ±10%, 50/60 Hz, Single-phase (Option)
220 Vac ±10%, 50/60 Hz, Single-phase (Option)
240 Vac ±10%, 50/60 Hz, Single-phase (Option)
Rnet48: AC to 48 Vdc converter models
- Input voltage
-
90 to 110 Vac, 50/60 Hz, Single-phase
180 to 220 Vac, 50/60 Hz, Single-phase
180 to 220 Vac, 50/60 Hz, Three-phase
110 Vac ±10%, 50/60 Hz, Single-phase (Option)
220 Vac ±10%, 50/60 Hz, Single-phase (Option)
240 Vac ±10%, 50/60 Hz, Single-phase (Option)
Options
- -LEt
-
LAN interface
- -L(110V)
-
110 Vac ±10% input
Only for models compatible with 100 V system.
Input current is approx 90% of typ. value.
- -L(220V)
-
220 Vac ±10% input
Only for models compatible with 200 V system
Input current is approx 90% of typ. value.
- -L(240V)
-
240 Vac ±10% input
Only for models compatible with 200 V system.
Input current is approx 87% of typ. value.
ADDITIONAL ACCESSORY
- 23-inch rack mount shelf [inch (mm)]
-
RME23-44H-PR
[EIA standards] H:1.73(44) P:1.25(31.8)
* P = Pitch of front mounting holes All mounting holes are Ø0.24(6) × 0.39(10) long hole
- 19-inch Rack Cabinet
-
Rnet series Fits Perfectly
- For 19-inch rack storage.
- The height and depth can be freely designed.
- The frame is made of aluminum and is beautiful.
- The frame can be disassembled with a hex wrench.
- It can also be used for 23-inch.
Dimensions
Tech Notes
Advantages of DC
"There are three major advantages to DC power."
High Reliability
The mechanism of AC power supply is complicated because four elements must be controlled: "voltage," "frequency," "phase," and "waveform. On the other hand, with a DC power supply, only "voltage" needs to be controlled, which simplifies the structure. In the event of a power failure or malfunction, power can also be supplied from a backup battery.
Low Cost
The DC power feed will reduce electricity costs through superior conversion efficiency that only a simple configuration can provide. In addition, the heat generated by the equipment is reduced because there is little loss due to conversion, thereby reducing air conditioning costs.
Global Environmentally Friendly
It reduces electricity use and carbon dioxide emissions.
Advantages of space saving
The DC power supply eliminates the need for the power conversion unit of a conventionally used UPS and reduces the installation space.
Compared to AC-powered systems of the same capacity, it takes up only about half the space, allowing more routers and servers to be installed in the available space.
ABOUT STATUS
- Statuses include OUTPUT and FAULT (FLT1 and FLT2).
- When the power supply is producing normal output voltage, the OUTPUT mode is shorted and the others are open.
- If FAULT is reached, the output is stopped.
- Each is an open collector output with a common common and floating common. Withstand voltage: 30 Vdc sink current: 5 mA max.
- Other troubles (over-temperature, over-voltage, or low AC) will cause FLT2 to short-circuit.
- Front panel FAULT lamp illuminates in the event of overcurrent, overtemperature, overvoltage, or low AC.
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-
Rnet series Datasheet
Date: 2025-11-12 Rev 05
PDF (3,305 KB)
-
DC POWER SUPPLIES SELECTION GUIDE
Date: 2025-06-27 rev.02
PDF (5,265 KB)
-
How to Use DC Power Supplies
Date: 2025-11-11 rev 09
PDF (1,281 KB)
Login Required
-
Rnet series Datasheet
Date: 2025-11-12 Rev 05
PDF (3,305 KB)
-
DC POWER SUPPLIES SELECTION GUIDE
Date: 2025-06-27 rev.02
PDF (5,265 KB)
-
How to Use DC Power Supplies
Date: 2025-11-11 rev 09
PDF (1,281 KB)
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