Description
Product Introduction
- The Bently Nevada 129478-01 is a High Voltage DC Power Input Module for the 3500 Series machinery protection system.
- It feeds regulated DC power to the rack and supports stable operation for critical rotating equipment.
- It accepts external high DC power and converts it to operating power levels inside the system.
- The module suits plants that need reliable uptime and safe power handling.
Technical Specifications
- Brand: Bently Nevada
- Model: 129478-01
- Series: 3500 Machinery Protection System
- Input Voltage: 88 to 140 VDC High Voltage Input
- Protection: Over-voltage fuse opens, under-voltage is safe
- Power Module Type: High Voltage DC PIM, half height
- Dimensions: 120.7 mm x 25.4 mm x 114.3 mm
- Weight: 0.34 kg
- Temperature Operation: -30°C to +65°C
- Storage: -40°C to +85°C
- Humidity: 95% non-condensing
- Environmental Endurance: stable in harsh plant sites
- EMI Resistance: supports noisy industrial power areas
Performance Attributes
- Stable DC conversion for continuous machine monitoring
- Rugged power architecture for industrial vibration and heat
- Fast replacement design improves system uptime
- No minimum rack load requirement
Compatibility
- Designed for the **3500 Series** rack system
- Direct fit with High Voltage DC power supply assemblies
- Mounts behind the associated power supply location
Installation Guidance
- Mount in the assigned rear rack slot
- Verify correct DC voltage before powering the rack
- Check fuse condition after any abnormal shutdown
Maintenance & Commissioning
- Inspect fuse after over-voltage events
- Confirm terminal torque and wire seating yearly
- Record power input stability as part of condition checks
Certifications & Quality
- Meets industrial control system standards
- Designed for long-term site service in process plants
Package & Warranty
- Module 129478-01 Power Input Unit
- Documentation Sheet
- Safety Notice
- Warranty: 12 months
- Shipping: FedEx, UPS, DHL worldwide
Typical Applications
- Compressors and turbines protection systems
- Oil and gas rotating machinery panels
- Refinery and petrochemical rack protection
- Power plant rotating equipment
Diagnostic Support
- Simplifies tracking of input power stability
- Supports event investigation after trips
- Assists in early detection of feed issues
FAQ
- How do I confirm the input is correct?
Check the supply with a meter before installing the module. - What if the module loses voltage?
The rack will shut down power distribution without harm to hardware. - When does the fuse open?
Fuse opens on high DC levels past rated range. - How often should I inspect the wiring?
Review connection points during planned outages.
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