Understanding the ONS-16MPO-MPO-4=: High-Dens
Overview of the ONS-16MPO-MPO-4= The ...
A9KV-V2-DC-A= Overview: Role in Cisco ASR 9000 Infrastructure
The Cisco A9KV-V2-DC-A= is a 3,000W DC power supply engineered for the Cisco ASR 9900 Series routers. Tailored for telecom and data center environments reliant on -48V DC power systems, it ensures stable energy delivery to high-density line cards and modular chassis. This second-generation unit improves upon legacy DC PSUs with 93% efficiency and adaptive cooling, reducing operational costs in 24/7 deployments.
Key Technical Specifications
- Input Voltage: -40V to -72V DC (compatible with Telcordia GR-1089-Core standards).
- Output Power: 3,000W continuous with active current sharing for load balancing.
- Redundancy: Supports N+1 or N+N configurations to eliminate downtime during PSU failures.
- Compatibility: Designed for ASR 9904, ASR 9912, and ASR 9920 chassis running IOS XR 7.5.1+.
Addressing Critical User Questions
Q: Can it replace the older A9K-3KW-DC power supply?
Yes, but only in chassis updated to IOS XR 7.5.1 or later. Earlier software versions lack firmware support for the V2’s dynamic fan control and efficiency optimizations.
Q: How does DC power efficiency compare to AC models?
The A9KV-V2-DC-A= operates at 93% efficiency, reducing energy loss by 22% compared to 80%-efficient AC units. For telecom sites with limited cooling infrastructure, this minimizes heat dissipation and HVAC costs.
Installation and Maintenance Guidelines
- Grounding: Use 4/0 AWG copper cables to handle fault currents up to 300A, per NEBS Level 3 requirements.
- Ventilation: Maintain at least 2 inches of clearance around the PSU to prevent airflow obstruction.
- Monitoring: Leverage Cisco IOS XR’s Power Management Manager (PMM) to track voltage fluctuations and PSU health.
Where to Source the A9KV-V2-DC-A=
For verified hardware and expedited shipping, visit the A9KV-V2-DC-A= product page at itmall.sale. The platform offers Cisco-certified refurbished units with full warranty coverage, ideal for budget-conscious upgrades.
Why DC Power Remains Vital in Telecom Networks
During a carrier’s core network expansion last year, the A9KV-V2-DC-A= proved indispensable. Its ability to handle -48V DC input without external converters streamlined deployment across legacy telco sites, while redundant configurations prevented outages during grid instability. While AC dominates enterprise data centers, this PSU underscores DC’s enduring relevance in telecom—where reliability trumps trends. For operators modernizing 5G backhaul or edge nodes, skipping this upgrade risks both scalability and compliance.