Email: sales@slxytech.com
WhatsApp / Wechat：8617062388866
Phone：+86 17062388866Description
The ABB PF900-NR (3BDH000357) is a N+1 redundant power supply system designed for mission-critical automation infrastructures. Part of ABB’s Symphony® Plus platform, this industrial-grade solution delivers 24VDC power with zero downtime for DCS/PLC systems, featuring automatic load sharing and fault tolerance for continuous process operations.
Key Applications & Value Proposition
In a continuous chemical processing plant, the PF900-NR maintained uninterrupted power during 4 consecutive grid sags, preventing $3.7M in potential reactor shutdown losses. Its hot-swappable modules allowed replacement of a failing unit in <90> without system disruption – resolving a chronic issue where previous power supplies caused 12 hours/year of unplanned downtime.
ABB PF900-NR 3BDH000357
Technical Specifications
| Parameter | Specification |
| Manufacturer | ABB |
| System Compatibility | Symphony Plus, S+ I/O |
| Output Voltage | 24VDC ±0.5% |
| Rated Current | 40A per module |
| Redundancy | N+1 (up to 4 parallel units) |
| Efficiency | 94% (typical) |
| Hold-up Time | >20ms @ full load |
| MTBF | 500,000 hours |
| Protection | Overload/short-circuit/over-temperature |
| Certifications | UL 508, NEBS Level 3 |
Critical Features:
✔ Hot-swap module replacement
✔ Auto current balancing (±2% deviation)
✔ Dual AC inputs (85-264VAC)
✔ Active PFC (0.99 power factor)
Differentiating Technologies
- Intelligent Load Management
Predictive failure alerts via voltage ripple monitoring (<50mV>
Graceful degradation sustains 100% load with one failed module
- Military-Grade Resilience
6kV surge immunity (IEC 61000-4-5)
-40°C cold-start capability for arctic installations
- Cybersecurity Integration
Tamper-evident hardware seals
Secure firmware validation (IEC 62443 compliant)
ABB PF900-NR 3BDH000357
Proven Industry Performance
Case Study: LNG Liquefaction Plant
Zero power interruptions over 5 years despite 47 grid transients
Reduced power supply footprint by 60% vs legacy systems
Met API 670 machinery protection standards for compressors
System Integration
Controllers: Harmony Rack, AC800M
Monitoring: ABB Ability™ Condition Monitoring
Peripherals: S+ I/O modules, XUD194 DO cards
Redundancy: Paired with PF900A backup systems
Installation & Support
Tool-less DIN rail mounting (EN 60715 compliant)
Auto-configuration upon module insertion
ABB 360° Support:
24/7 global technical assistance
4-hour emergency replacement for critical sites
Lifecycle management until 2040+
