Description
Product Description
The 3500/15 125840-01 High Voltage AC Power Input Module is engineered for use with the Bently Nevada 3500 Machinery Protection platform. Installed behind the associated 3500/15 power supply module, this Power Input Module (PIM) accepts high-voltage AC mains input and delivers conditioned power to the rack power supply system.
Designed for continuous-duty industrial applications, the Bently Nevada 125840-01 supports reliable operation of monitoring and protection modules installed within 3500 rack assemblies. The module operates with nominal 220 Vac systems and accommodates a wide AC input range, making it suitable for power generation plants, petrochemical facilities, turbine monitoring systems, and heavy rotating equipment installations.
The module supports both standalone and redundant power supply architectures. In dual-supply configurations, the PIM enables automatic failover functionality and uninterrupted rack operation during maintenance or module replacement procedures. Hot-swappable capability allows service technicians to replace a module without shutting down the entire monitoring system when redundant power is available.
Its compact half-height design simplifies rack integration while maintaining high conversion efficiency and stable power conditioning performance under varying industrial load conditions.
Technical Specifications
| Parameter |
Specification |
| Model Number |
3500/15 |
| Part Number |
125840-01 |
| Manufacturer |
Bently Nevada |
| Product Type |
High Voltage AC Power Input Module |
| Product Series |
3500 Machinery Protection System |
| Compatible Module |
3500/15 Power Supply |
| Installation Type |
Backplane Mounted |
| Module Format |
Half-Height |
| Redundancy Support |
Yes |
| Hot Swap Capability |
Supported |
| Rack Compatibility |
3500 Rack Systems |
Electrical Specifications
| Parameter |
Value |
| Nominal Input Voltage |
220 Vac |
| Input Voltage Range |
175–264 Vac RMS |
| Peak Voltage Range |
247–373 Vac Peak |
| Frequency Range |
47–63 Hz |
| Maximum Output Current |
2.3 A RMS |
| Conversion Efficiency |
Up to 90% |
Protection Features
-
Overvoltage fuse protection
-
Undervoltage tolerance without module damage
-
Stable conditioned power delivery
-
Automatic redundant power switchover support
-
Industrial-grade electrical isolation and protection design
Environmental Specifications
| Parameter |
Specification |
| Operating Temperature |
-30°C to +65°C |
| Storage Temperature |
-40°C to +85°C |
| Relative Humidity |
0–95% Non-Condensing |
Mechanical Specifications
| Parameter |
Value |
| Dimensions |
120.7 × 25.4 × 114.3 mm |
| Weight |
0.34 kg |
| Mounting Method |
Rack Backplane Installation |
Functional Characteristics
The 125840-01 module performs incoming AC conditioning for the associated 3500/15 power supply and distributes stable operating power throughout the rack system. The design supports:
-
High-voltage AC input applications
-
Dual power supply redundancy
-
Continuous monitoring system uptime
-
Simplified maintenance through hot-swappable installation
-
Compact integration into standard 3500 racks
Typical Applications
This module is commonly used in:
-
Steam turbine monitoring systems
-
Gas compressor protection systems
-
Generator vibration monitoring
-
Industrial motor protection applications
-
Oil and gas production facilities
-
Refinery process monitoring systems
-
Critical rotating equipment installations
FAQ
What is the purpose of the 125840-01 module?
The module conditions high-voltage AC input power for the compatible 3500/15 rack power supply within the 3500 Machinery Protection System.
Can the module be replaced during operation?
Yes. When a redundant power supply configuration is installed, the module supports hot-swappable replacement without interrupting rack operation.
Is the module compatible with all 3500 racks?
The module is designed for compatible Bently Nevada 3500 rack systems using the 3500/15 power supply assembly.
