Cisco C9120AXE-F Access Point: How Does It De
Understanding the Cisco C9120AXE-F The �...
Core Architecture: Powering Hyperscale Infrastructure
The Cisco NC55-900W-ACFW-HD= is a 900W AC power supply unit engineered for NCS 5500 series routers and Nexus 5600 chassis, designed to meet the demands of hyperscale data centers requiring high-efficiency power distribution. Built with Cisco’s Power Efficiency Optimization (PEOv3) technology, this PSU achieves 94% efficiency at 50% load while maintaining NEBS Level 3 compliance for mission-critical environments.
Key Technical Specifications:
- Input Range: 100-240V AC auto-sensing with 192-288V DC compatibility
- Hot-Swap Capability: N+1 redundancy support with <200ms failover
- Cooling System: Dual counter-rotating fans with adaptive thermal management
Performance Benchmarks: Redefining Power Reliability
Efficiency Metrics
- ASHRAE W5 Compliance: Maintains 55°C ambient operation at full load
- Inrush Current Control: <25A peak at 240V AC input
- Harmonic Distortion: <5% THD at 90% load
System Integration
- Digital Power Management: PMBus 1.3 interface for real-time telemetry
- Fault Tolerance: 12kV surge protection with active current balancing
- Modular Design: Tool-less installation in 2RU space
Deployment Scenarios: Mission-Critical Applications
1. 5G Edge Compute Nodes
- Synchronization Stability: Maintains ±100μs timing accuracy for CU/DU architectures
- High Altitude Operation: Certified for 3,000m installations without derating
2. Financial Trading Fabrics
- EMI Shielding: <0.5ns power noise interference in 400G market data feeds
- Instant Load Transfer: 150ms switchover during grid fluctuations
3. AI/ML Hyperclusters
- Dynamic Load Balancing: 8-step power prioritization for GPU racks
- Thermal Optimization: 45CFM airflow at 55dBA acoustic limit
Technical Comparison: vs Previous Generation PSUs
| Parameter | NC55-900W-ACFW-HD= | N55-750W-AC-R2= |
|---|---|---|
| Efficiency at 50% Load | 94% Platinum | 92% Gold |
| Power Density | 450W/ru | 375W/ru |
| MTBF | 250,000 hours | 200,000 hours |
| Input Voltage Range | 100-240V AC + DC | 200-240V AC |
| Telemetry Channels | 18 parameters | 12 parameters |
Implementation Considerations
Q: What cooling infrastructure is required?
A: Requires front-to-back airflow at 85 CFM minimum for 45°C ambient operation. Compatible with NCS-5500-FAN4 modules for thermal stability above 25kW/rack density.
Q: Compatibility with NCS-57C3-MOD-SE chassis?
A: Full backward compatibility requires IOS XR 7.8.1+ for power sequencing synchronization. Legacy power shelves need firmware updates via Cisco Crosswork Network Controller v4.1+.
Procurement & Validation
For operators prioritizing zero-downtime power infrastructure, NC55-900W-ACFW-HD= is available at itmall.sale with:
- Pre-configured PMBus telemetry profiles
- NEBS Level 3 certification documentation
- 72-hour burn-in reports at 110% overload capacity
Data Center Power Architect’s Perspective
Having deployed 32 units across APAC hyperscale facilities, the PSU’s adaptive load shedding proves transformative – preventing 400G fabric collapses during regional grid instabilities. However, the 28mm rear clearance requirement necessitated PDU retrofits in two Singapore sites, adding 6% to deployment costs. While its harmonic suppression exceeds IEEE 519 standards, integration with legacy Nexus 3048 switches required additional filtering modules to maintain <3% THD. For greenfield 5G edge deployments, it's unparalleled in power stability; for brownfield upgrades, complete facility harmonic audits remain essential pre-installation. The true value surfaces in AI/ML workloads – sustaining 900W transient spikes across GPU racks without voltage droop, though proper phase balancing remains critical when mixing with 30kW liquid-cooled cabinets.