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BENTLY 3500/20 125744-02 Rack Power Supply Module
Product Overview
The BENTLY 3500/20 125744-02 is a high-reliability Rack Power Supply Module designed as the core power infrastructure for Bently Nevada’s 3500 Series Machinery Protection System. Engineered to deliver stable and redundant DC power to monitoring modules in critical industrial applications, this module ensures continuous operation of vibration analysis, shaft displacement, and safety systems. As an integral component of the 3500 Series, the 3500/20 125744-02 supports seamless integration with other 3500 modules (e.g., 3500/42M vibration monitors, 3500/22M keyphasor modules), providing a robust power foundation for rotating equipment protection in sectors such as oil & gas, power generation, and heavy manufacturing.
Featuring a dual-channel redundant design, the BENTLY 3500/20 125744-02 converts 100–240 V AC input to 24 V DC output, with each channel capable of supplying up to 7.5 A. Its hot-swappable architecture allows module replacement without powering down the system, minimizing downtime during maintenance. The module’s advanced power conditioning includes overvoltage, overcurrent, and thermal protection, ensuring stable operation in harsh environments with temperatures ranging from -40°C to +70°C. Complying with industry standards like API 670 and IEC 61131-2, the 3500/20 125744-02 is ideal for mission-critical setups where power reliability is non-negotiable.
In automation ecosystems, the 3500/20 125744-02 serves as the power backbone of the 3500 Series rack, delivering clean energy to modules that safeguard turbines, compressors, and generators. Its modular design enables easy installation in 19-inch racks, while built-in LED indicators provide real-time feedback on power status and fault conditions. By combining high-efficiency power conversion with redundant architecture, the module enhances system availability and reduces the risk of unplanned outages, making it essential for industrial machinery protection strategies.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 3500/20 125744-02 |
| Manufacturer | Bently Nevada |
| Product Type | Rack Power Supply Module |
| Input Voltage | 100–240 V AC, 50/60 Hz |
| Output Voltage | 24 V DC ±0.5% |
| Output Current | 7.5 A per channel, 15 A total (dual-channel) |
| Efficiency | 88% typical |
| Redundancy | Dual-channel hot-swappable redundancy |
| Physical Dimensions | 10.16 cm (H) × 16.51 cm (W) × 22.86 cm (D) |
| Weight | 1.4 kg |
| Operating Temperature | -40°C to +70°C |
| Mounting | Rack-mounted in 3500 Series enclosure |
| Certifications | CE, UL, cUL, API 670 |
Key Features and Advantages
Dual-Channel Redundancy: The 3500/20 125744-02 features two independent power channels that operate in parallel, ensuring continuous output even if one channel fails. This design eliminates single points of failure, critical for maintaining monitoring system functionality during power fluctuations or component faults.
Hot-Swap Capability: The module can be replaced without disrupting power to the rack, allowing maintenance in live systems. This feature is essential for 24/7 industrial operations where downtime translates to significant productivity losses.
Wide Input Voltage Range: Supporting 100–240 V AC input, the 3500/20 125744-02 adapts to global power grids, reducing the need for region-specific adapters and enhancing installation flexibility in international projects.
Advanced Protection Mechanisms: Built-in overvoltage, overcurrent, and thermal protection circuits safeguard the module and connected equipment from damage, extending the lifespan of both the power supply and monitoring modules. The thermal shutdown feature prevents overheating in extreme environments.
High-Efficiency Power Conversion: With 88% typical efficiency, the module minimizes energy loss and heat generation, reducing cooling requirements and operational costs in industrial settings. This efficiency also contributes to a smaller carbon footprint.
Rugged Environmental Tolerance: Engineered to withstand extreme temperatures (-40°C to +70°C) and harsh conditions, the module ensures reliable performance in offshore platforms, refineries, and other challenging locations with high vibration or humidity.
Application Areas
The BENTLY 3500/20 125744-02 is essential for powering machinery protection systems in industries where equipment reliability is critical:
- Oil & Gas: Powers vibration monitoring systems in compressors, pumps, and turbines at refineries, pipelines, and offshore rigs, enabling early detection of mechanical issues to prevent production disruptions.
- Power Generation: Supports turbine health monitoring in thermal, hydro, and nuclear power plants, maintaining grid stability by enabling real-time analysis of shaft vibrations and displacements.
- Manufacturing: Powers monitoring systems for high-speed rotating equipment (e.g., motors, fans, conveyors) in automotive, chemical, and food processing facilities, minimizing unplanned downtime and optimizing maintenance schedules.
- Mining: Installed in crushers, mills, and ventilation systems to monitor equipment health in harsh mining environments, reducing maintenance costs and improving operational efficiency.
Specific applications include:
- Turbine Protection Systems: Powers modules that monitor steam turbine vibrations, ensuring safe operation and preventing catastrophic failures in power generation facilities.
- Compressor Health Monitoring: Supplies power to displacement sensors and vibration analyzers in natural gas compressors, enabling predictive maintenance to avoid costly breakdowns.
- Industrial Machinery Diagnostics: Powers monitoring racks in manufacturing plants to analyze equipment vibrations, reducing wear and tear on critical components and extending their service life.
Related Products
- 3500/15 Power Supply Module: A lower-current variant (5 A per channel) compatible with the 3500/20 125744-02 in redundant configurations for smaller rack setups.
- 3500/05 Rack Enclosure: Houses the 3500/20 125744-02 and other 3500 Series modules, providing a structured and protected environment for rack-mounted systems.
- 3500/42M Vibration Monitor: Works in tandem with the 3500/20 125744-02 to analyze vibration data from rotating equipment, relying on its stable power supply.
- 3500/22M Keyphasor Module: Depends on the 3500/20 125744-02 for power, providing rotational reference signals for phase-locked vibration analysis.
- 3500/32M Relay Module: Triggers alarms or shutdowns based on monitoring data, powered by the 3500/20 125744-02 in safety-critical applications.
- 3500/92 Communication Gateway: Integrates with the 3500/20 125744-02 to enable remote monitoring via Ethernet, supporting Industry 4.0 initiatives and cloud-based diagnostics.
Installation and Maintenance
Pre-installation Preparations:
Before installing the BENTLY 3500/20 125744-02, ensure the 3500 Series rack is properly grounded and ventilated. Verify that the input voltage (100–240 V AC) matches the module’s specifications and install redundant power cables for reliability. Mount the module in the rack using the provided hardware, ensuring adequate spacing for heat dissipation. Connect the input power using shielded cables and terminate them in the rack’s power distribution block, following Bently Nevada’s wiring guidelines to minimize electromagnetic interference. Configure the module’s redundancy settings via the rack’s management interface if applicable.
Before installing the BENTLY 3500/20 125744-02, ensure the 3500 Series rack is properly grounded and ventilated. Verify that the input voltage (100–240 V AC) matches the module’s specifications and install redundant power cables for reliability. Mount the module in the rack using the provided hardware, ensuring adequate spacing for heat dissipation. Connect the input power using shielded cables and terminate them in the rack’s power distribution block, following Bently Nevada’s wiring guidelines to minimize electromagnetic interference. Configure the module’s redundancy settings via the rack’s management interface if applicable.
Maintenance Suggestions:
- Routine Inspections: Conduct quarterly visual checks of LED indicators to verify power output and fault status. Use a multimeter to measure output voltage and current, comparing readings against the module’s specifications to ensure consistency.
- Cleaning: Remove dust and debris from the module’s vents monthly to prevent overheating, particularly in dusty environments. Use compressed air or a soft brush to clean the enclosure without damaging internal components.
- Redundancy Testing: Annually simulate a channel failure to verify that the redundant channel switches on correctly, ensuring system reliability. Document test results for compliance and maintenance records.
- Spare Parts Management: Store spare 3500/20 125744-02 modules in a controlled environment (10–30°C, <50% humidity) to ensure quick replacement during unexpected failures. Rotate inventory periodically to maintain component viability and performance.
Product Guarantee
Our company provides a 12-month quality warranty for the BENTLY 3500/20 125744-02, covering hardware defects under normal use. In the event of power output anomalies or functional failures, we offer prompt replacement services to minimize downtime. For legacy or urgent requirements, our global supply chain ensures rapid delivery of the 3500/20 125744-02 and related spares. Our technical support team assists with installation, troubleshooting, and redundancy testing, ensuring reliable power supply for your machinery protection systems and supporting continuous industrial operations.
For inquiries, contact us via WhatsApp at +86 18859254943 or email at sales@ygplc.com.
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