Description
Bently Nevada 3500/15-01-01-00 (125840-02)
Technical Specifications:
- Product Series: 3500 Machinery Protection System
- Module Type: Power Supply Module
- Upper Slot Input: 01 = High-Voltage AC (175 to 264 Vac rms, 47 to 63 Hz)
- Lower Slot Input: 01 = High-Voltage AC (175 to 264 Vac rms, 47 to 63 Hz)
- Configuration: Dual power supply (redundant)
- Rear I/O Part Number: 125840-02
- Maximum Frame Current: 2.3 A rms (for 175 to 254 Vac input)
- Power Consumption: Typical 4.75W per module
Functional Features:
- Provides regulated DC power to all modules within the 3500 rack via the backplane
- Dual power supply configuration ensures full redundancy — if one power supply fails, the other continues to supply the entire rack without interruption
- Hot-swappable design allows replacement of one power module while the system remains fully operational
- Accepts a wide range of input voltages and converts them to the voltages required by other 3500 modules
- Over-voltage protection: out-of-range voltage causes the PIM fuse to open, protecting the system
- Single-point grounding switch on the PIM prevents ground loops; when two power supplies are installed, both switches must be set to the same position
Application Scenarios:
- Power supply for 3500 machinery protection racks in power plants, refineries, chemical plants, and other industrial facilities
- Critical rotating machinery protection systems requiring redundant power architecture
- Any 3500 system installation demanding high availability and fault tolerance
Performance Parameters:
- Input Voltage Range: 175 to 264 Vac rms (247 to 373 Vac peak), 47 to 63 Hz
- Output: Regulated DC voltages for all 3500 modules via backplane
- Redundancy: Full hot-standby redundancy in dual configuration
- Protection: Fuse-based over-voltage protection on the PIM
Material Composition:
- Industrial-grade PCB with surface-mount components
- Metal chassis with rack-mount front panel
- Rear I/O board (125840-02) with backplane connectors
Structural Features:
- Half-height module form factor for 3500 rack
- Front panel with Power OK LED indicator
- Rear I/O module (125840-02) mates with the backplane on the opposite side
- Grounding switch accessible on the PIM
Working Principle: The power supply module receives AC input through the PIM (Power Input Module), rectifies and regulates it to produce the DC voltages required by all modules in the rack. In dual configuration, both power supplies operate in parallel, with the upper module serving as primary and the lower as backup. The backplane distributes power to all installed modules.
Installation Requirements:
- Must be installed in the leftmost special slot of the 3500 rack
- For dual power configuration, both upper and lower positions must be populated
- The rear I/O module (125840-02) must be properly seated on the backplane
- Grounding switch must be set correctly; both switches must match in dual configuration
- Input wiring must comply with local electrical codes
Usage Precautions:
- Never remove both power supplies simultaneously while the rack is energized
- Verify input voltage matches the module rating before energizing
- Ensure the grounding switch is properly configured to avoid ground loops
- The Power OK LED must be illuminated during normal operation; if not, check input power and fuse condition
