Product Overview
The BENTLY 3500/20 125768-01 is a critical power supply module within Bently Nevada’s 3500 Machinery Protection System, designed to deliver stable, regulated power to all modules in the 3500 rack. As the backbone of the system’s electrical infrastructure, this model ensures consistent operation of monitoring components—such as vibration sensors, proximity probes, and signal conditioners—that track machinery health in industrial settings.
The BENTLY 3500/20 125768-01 is engineered to provide reliable power even in fluctuating industrial environments, minimizing the risk of system downtime due to voltage irregularities. Its integration with the 3500 rack system is seamless, supporting hot-swap capabilities that allow for replacement without shutting down the entire monitoring setup—a key advantage in critical applications where uninterrupted data collection is essential. What distinguishes the BENTLY 3500/20 125768-01 is its robust design, combining overload protection with efficient power conversion, making it indispensable for maintaining the integrity of machinery health data in high-stakes industries.
Technical Specifications
| Parameter |
Value |
| Product Model |
BENTLY 3500/20 125768-01 |
| Manufacturer |
Bently Nevada |
| Product Type |
Power Supply Module (3500 Series) |
| Input Voltage |
100-240 VAC (50/60 Hz) |
| Output Voltage |
+5 VDC, +15 VDC, -15 VDC |
| Maximum Output Current |
10 A (total), 5 A (+5 VDC), 2.5 A (+15 VDC/-15 VDC) |
| Operating Temperature |
0°C to +60°C |
| Mounting |
3500 Series Rack (1-slot width) |
| Protection Features |
Overcurrent, overvoltage, short-circuit protection |
| Redundancy Support |
Compatible with dual-module redundancy setups |
| Hot-Swap Capable |
Yes (no system shutdown required for replacement) |
| Dimensions (HxWxD) |
133 mm x 38 mm x 229 mm |
| Compliance |
UL, CSA, ATEX, IECEx |
Key Features and Benefits
The BENTLY 3500/20 125768-01 delivers exceptional power stability, with tightly regulated output voltages that prevent voltage spikes or drops from disrupting sensitive monitoring modules. This stability is critical for accurate data collection, as even minor electrical fluctuations can corrupt measurements from vibration or displacement sensors.
A standout feature of the BENTLY 3500/20 125768-01 is its hot-swap capability, allowing technicians to replace the module while the 3500 rack remains operational. This eliminates the need for system shutdowns during maintenance, a significant advantage in industries like power generation or oil refining where unplanned downtime can cost thousands per minute.
The module also supports redundancy, enabling pairing with a second BENTLY 3500/20 125768-01 for failover protection. If one unit fails, the redundant module automatically takes over, ensuring uninterrupted power to the rack. Overcurrent and short-circuit protection further safeguard connected components, preventing damage from electrical faults and extending the lifespan of the entire monitoring system.
Compatibility with all 3500 series modules—including the 3500/42M Vibration Monitor and 3500/15 Communication Module—simplifies system expansion, making the BENTLY 3500/20 125768-01 a versatile choice for both new installations and upgrades.
Application Scenarios
The BENTLY 3500/20 125768-01 is essential in industries where continuous machinery monitoring is critical to safety and productivity. In power plants, it powers 3500 system modules monitoring steam turbines and generators, ensuring that vibration and temperature data—vital for preventing catastrophic failures—are collected without interruption. Its stable output is particularly valuable here, as voltage fluctuations in plant electrical systems could otherwise corrupt sensitive measurements.
In oil and gas refineries, the BENTLY 3500/20 125768-01 supports 3500 racks monitoring centrifugal compressors and pipeline pumps. Its redundancy feature is key in these settings, where equipment failure could lead to leaks or production halts; the module’s ability to switch to a backup power source ensures monitoring continues even during electrical anomalies.
Pulp and paper mills, with their high-vibration environments, rely on the BENTLY 3500/20 125768-01 to power modules tracking motor and roller alignment. The module’s rugged design withstands the dust and moisture common in these facilities, maintaining power integrity for consistent data collection.
In marine applications, such as shipboard propulsion systems, the
BENTLY 3500/20 125768-01 ensures 3500 monitoring systems remain operational during rough seas, supporting real-time data on turbine performance that is critical for safe navigation.
Related Models
3500/22 125769-01 – Redundant power supply controller that pairs with BENTLY 3500/20 125768-01 to manage dual-module redundancy.
3500/42M 125808-01 – Vibration monitor module powered by BENTLY 3500/20 125768-01 in the 3500 rack.
3500/15 125771-01 – Communication module that shares power from BENTLY 3500/20 125768-01 to enable data transmission to SCADA systems.
3500/20 125768-02 – High-temperature variant of BENTLY 3500/20 125768-01 with an operating range up to 70°C, for extreme environments.
3500/05 125767-01 – Rack interface module that works with BENTLY 3500/20 125768-01 to coordinate power distribution in the 3500 system.
3300/20 – Previous generation power supply, compatible with legacy systems but less feature-rich than BENTLY 3500/20 125768-01.
3500/92 125782-01 – System display module that draws power from BENTLY 3500/20 125768-01 to visualize machinery health data.
Installation and Maintenance
Installation of BENTLY 3500/20 125768-01 requires insertion into an empty slot in the 3500 rack, ensuring proper alignment with the backplane connectors. The module must be secured with the front panel screws to prevent movement during operation. Input power should be connected to a dedicated circuit with appropriate overcurrent protection, and grounding must comply with local electrical codes to minimize noise. Verify that input voltage matches the module’s 100-240 VAC range before powering on.
For maintenance, regularly check the BENTLY 3500/20 125768-01’s front-panel LED indicators to confirm normal operation—steady green indicates proper output, while red signals faults. Measure output voltages quarterly using a multimeter to ensure they remain within regulated ranges. In redundant setups, test failover functionality annually by temporarily disconnecting the primary module. Replace the module every 8-10 years under normal operation, or immediately if faults persist despite troubleshooting, to maintain system reliability.
Product Warranty
The BENTLY 3500/20 125768-01 is backed by a one-year warranty from Xiamen Xiongba E-commerce Co., Ltd., covering manufacturing defects and performance issues under normal operating conditions. During this period, we provide free replacement for any unit that fails to meet specified power output or protection standards, ensuring minimal disruption to your 3500 Machinery Protection System. Our technical support team offers guidance on installation, redundancy setup, and troubleshooting, leveraging over a decade of experience in industrial automation. We stand behind the reliability of BENTLY 3500/20 125768-01, ensuring customers receive consistent performance and responsive service to support their critical monitoring operations.
