Description
Bently 3300/12-01-20-00
Technical Specifications
- Module Type: Power Supply Unit
- Part Number: 3300/12-01-20-00
- Input Voltage: Wide-range AC or DC (Typically 100-240 VAC or 125 VDC)
- Output Voltage: Regulated -24 Vdc (for Proximitor transducers) and +5 Vdc (for internal logic)
Functional Features
- Dual Output Regulation: Provides stable, isolated power for both sensitive analog sensor circuits and digital logic boards.
- Short-Circuit Protection: Automatically limits current and shuts down if a fault is detected on the backplane, protecting downstream modules.
- Status Indication: Features front-panel LEDs to indicate normal power status, over-voltage, or under-voltage conditions.
Application Scenarios
Installed in the dedicated power slot of any 3300/05 series rack frame to energize machinery protection systems on turbines, compressors, and pumps.
Performance Parameters
- Power Efficiency: High-efficiency switching topology
- Ripple and Noise: Extremely low output ripple for clean sensor excitation
- Operating Temperature: -30°C to +65°C
Material Composition
Industrial-grade switching components, conformal-coated printed circuit boards, and a metallic shielded enclosure.
Structural Characteristics
Standard 3300 series form factor with front-panel status LEDs, ventilation slots, and rear plug-in backplane connectors.
Working Principle
Utilizes an isolated switch-mode power supply topology to step down and rectify incoming power, delivering precise DC voltages to the rack backplane.
Installation Requirements
Insert the module into the designated power supply slot in the 3300 rack. Ensure the rear connector is fully seated and tighten the front panel captive screws.
Usage Precautions
Never attempt to open or repair the power supply module internally. If the fault LED illuminates, systematically isolate backplane modules to identify the short circuit before replacing the power supply.
