CAB-PWR-C7-CHN-A=: What Is This Cisco Power C
Defining the CAB-PWR-C7-CHN-A= The CAB-PWR-C7-CHN...
Functional Overview and Target Applications
The Cisco PSU4.3KW-HVPI= is a 4.3-kilowatt hot-swappable power supply engineered for high-density data center and enterprise environments. Designed to support Cisco Nexus 9000 Series switches and UCS B-Series Blade Servers, it provides N+1 redundancy and operates at 240V AC high-voltage input, making it ideal for:
- AI/ML Workloads: Powering GPU/TPU clusters in hyperscale data centers
- 5G Core Networks: Ensuring uptime for high-throughput routers and switches
- High-Performance Compute (HPC): Delivering stable power to UCS C480 ML servers
Technical Specifications and Compliance
- Input Voltage: 200–277V AC (50/60Hz)
- Efficiency: 94% at 50% load (80 PLUS Platinum equivalent)
- Output: 12V DC rail with 360A max current
- Compliance:
- IEC 62368-1 (Safety standards)
- NEBS Level 3 (GR-63-CORE seismic/vibration)
- ENERGY STAR 3.0
- Environmental:
- Operating Temperature: 0°C to 45°C (derate 2% per °C above 40°C)
- Altitude: Up to 3,000 meters
Compatibility and Integration
Supported Cisco Platforms
- Switches: Nexus 9504/9508 with N9K-PUV4 chassis
- Servers: UCS B200 M6 Blade, UCS C480 ML (requires UCSB-PSU-4KW adapter)
- Routers: ASR 9904 with A9K-PWR-4KW module
Third-Party Validation
- NVIDIA DGX A100: Validated for 48V DC busbar integration
- Schneider APC Smart-UPS: Compatible with 208V PDUs via CAB-HVDC-208V=
Installation and Redundancy Configuration
Step-by-Step Deployment
- Safety Precautions: Lock out upstream circuit breakers per NFPA 70E.
- Mounting: Slide PSU into chassis slot until latch engages (audible click).
- Redundancy: Configure N+1 mode via Cisco UCS Manager or NX-OS CLI:
power redundancy-mode combined power supply 1 priority primary
Thermal Management
- Maintain ≥5cm clearance between PSUs for airflow.
- Monitor via
show environment power(alarm threshold: 50°C).
Performance Benchmarks
Data Center Efficiency Gains
A Tier IV facility reduced PUE from 1.45 to 1.18 by:
- Deploying 24x PSU4.3KW-HVPI= in Nexus 9508 chassis
- Leveraging dynamic power sharing during load spikes
- Achieving 99.999% uptime over 18 months
Power Utilization Metrics
| Load Level | Efficiency | Input Current (240V) |
|---|---|---|
| 20% | 92% | 8.2A |
| 50% | 94% | 19.8A |
| 90% | 91% | 35.1A |
Addressing Critical Deployment Concerns
Q: How does it handle voltage fluctuations?
- Voltage Ride-Through: Maintains output for 20ms during 50% voltage sag.
- Surge Protection: 6kV line-to-ground per IEC 61000-4-5.
Q: Can it operate in mixed-voltage environments?
- Yes, with CAB-HVDC-208V= adapter for 208V PDUs.
- Derating: Max output reduces to 3.8KW at 208V.
Q: Maintenance best practices?
- Fan Replacement: Every 5 years (Cisco PSU-FAN-4KW= kit).
- Capacitor Health Check: Use
show power supply detailto monitor ESR.
Lifecycle Management
Firmware Updates
- NX-OS: 10.2(3)F+ for adaptive current sharing.
- UCS Manager: 4.2(3c)+ for predictive failure analytics.
End-of-Life Strategy
- Last RMA Date: Q2 2031 (Cisco EOL Notice #7842).
- Recycling: Separate aluminum heatsinks from PCB per R2v3.
Operational Insights from Financial Sector Deployments
In trading data centers, the PSU4.3KW-HVPI=’s 2ms failover during grid fluctuations prevented 2.8Minpotentiallossesduringpeakvolatility.While48VDCgainstraction,its∗∗adaptiveAC/DCbus∗∗enabledseamlessintegrationwithlegacyUPSsystems—avoiding2.8M in potential losses during peak volatility. While 48V DC gains traction, its **adaptive AC/DC bus** enabled seamless integration with legacy UPS systems—avoiding 2.8Minpotentiallossesduringpeakvolatility.While48VDCgainstraction,its∗∗adaptiveAC/DCbus∗∗enabledseamlessintegrationwithlegacyUPSsystems—avoiding600k in infrastructure upgrades. The unanticipated benefit? Its harmonic distortion <5% eliminated the need for external filters in sensitive algo-trading setups.
For procurement and technical validation: [“PSU4.3KW-HVPI=” link to (https://itmall.sale/product-category/cisco/).