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EltekModel: 252189 Subrack Power System
Eltek 252189 Subrack Telecom DC Power System (-48V 4-Slot Flatpack2)
The Eltek 252189 is an embedded 19-inch 2U subrack DC power system engineered for telecom and core networking, integrating Flatpack2 rectifier slots, Smartpack controller interface, and integrated AC/DC distribution.
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- Nominal Output Voltage
- -48VDC (-42V ~ -58V) VDC
- AC Input Voltage
- 85VAC ~ 300VAC (Nominal 220V/380VAC) VAC
- Rated DC Output Current
- 200A (Subrack Capacity 11.6kW)
- Peak Energy Efficiency
- ≥96.5%
- Managed Rectifier Capacity
- 4 × Flatpack2 48/2000 HE / 48/3000 HE Slots
- Smart Monitoring Controller
- Smartpack2 / Smartpack S Controller Slot
What this product is
What this product is
The Eltek 252189 is a rack-mountable DC power distribution and conversion chassis equipped with high-efficiency switch-mode rectifier positions, a CAN bus architecture, and load/battery disconnect contactors designed to deliver uninterrupted -48V power.
What problem it solves
Eliminates power density bottlenecks in space-constrained telecom enclosures, mitigates system downtime via modular N+1 redundancy, and prevents destructive battery deep-discharge through programmable disconnection thresholds.
Who and where it is for
Wireless base stations, BBU pooling hubs, optical access nodes, enterprise telecom racks, and edge computing installations requiring reliable DC backup power.
Core advantages
- Ultra-compact 2U 19-inch form factor delivering up to 8kW/150A continuous DC output to optimize rack footprint.
- Engineered for high-efficiency Flatpack2 rectifiers achieving system efficiency ≥96%, cutting thermal losses and operating expenditure.
- Integrated dual Low Voltage Disconnects (LLVD and BLVD) for critical load prioritization and battery preservation.
- Robust CAN bus communication enabling automatic active current sharing and seamless Smartpack monitoring.
Technical specifications
| Key specifications | Value |
|---|---|
| AC Input Voltage | 85VAC ~ 300VAC (Nominal 220V/380VAC) VAC |
| Smart Monitoring Controller | Smartpack2 / Smartpack S Controller Slot |
| Cooling System Architecture | Independent module air cooling & rack straight duct |
| Nominal Output Voltage | -48VDC (-42V ~ -58V) VDC |
| Managed Rectifier Capacity | 4 × Flatpack2 48/2000 HE / 48/3000 HE Slots |
| Rated DC Output Current | 200A (Subrack Capacity 11.6kW) |
| Form Factor Dimensions (HxWxD) | 88 (2U) × 482 × 330 mm |
| Peak Energy Efficiency | ≥96.5% |
| Operating Temperature Range | -40°C ~ +65°C |
Applications
01
4G/5G mobile telecom base transceiver stations (BTS) and BBU hotels
02
Fixed-line broadband optical central offices and FTTx aggregation sites
03
Industrial SCADA, railway signaling, and utility substations requiring -48VDC
04
Edge data center transmission routers and networking switches
Frequently asked questions
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