The GE / Bently Nevada 125840-01 is a High Voltage AC Power Input Module (PIM) that converts high-voltage AC input into regulated low-voltage DC output for the Bently Nevada 3500 Series Machinery Protection System. This half-height module delivers stable power to distributed monitoring modules within the 3500 rack architecture, supporting single or redundant supply configurations with automatic failover capability.
## Technical Specifications
**Electrical Performance**
• Input Voltage: 175–264 VAC RMS (nominal 220 VAC); 247–373 VAC peak
• Input Frequency: 47–63 Hz
• Maximum Output Current: 2.3 A RMS
• Typical Output Power: 100 W (extended variants: 200–500 W)
• Efficiency: Up to 90%
• Voltage Regulation: Maintains stable output despite input fluctuations
**Physical & Installation**
• Form Factor: Half-height module
• Dimensions: 120.7 mm × 25.4 mm × 114.3 mm (4.75 in × 1.0 in × 4.5 in)
• Weight: 0.34 kg (0.75 lb)
• Installation: Left-side slots, 3500 rack
• Operating Temperature: −30°C to +65°C (−22°F to +150°F)
• Storage Temperature: −40°C to +85°C (−40°F to +185°F)
• Humidity: 95%, non-condensing
## Key Features
• Dual power supply support with secondary module serving as hot backup
• Primary supply occupies lower slot; backup module in upper slot
• Galvanic isolation between AC input and DC output stages
• Overvoltage protection via fuse disconnect
• Undervoltage tolerance with no damage risk to module or system
• Overload current protection
• Manufactured in the United States
## Compatibility & Integration
The 125840-01 integrates directly into Bently Nevada 3500 Series machinery protection racks. Configurations may include one primary PIM or two modules for redundant power delivery with automatic failover protection, ensuring continuous operation of monitoring channels during supply anomalies.
