Bently Nevada 135785-02: Redundant Power Supply Module for 3500 Monitoring System

Product Description

The Bently Nevada 135785-02 is a high-reliability redundant power supply module, specifically designed as a critical component of the Bently Nevada 3500 Machinery Protection and Condition Monitoring System. This module ensures uninterrupted power distribution to connected monitoring modules, safeguarding continuous operation of vibration, position, and temperature monitoring functions in industrial environments. With dual power input paths, advanced fault detection, and rugged construction, it provides a stable 24 VDC power source even during primary power failures, making it essential for protecting critical rotating machinery where downtime risks are high.

Product Parameters

Parameter	Specification
Input Voltage	Dual AC inputs: 100–240 VAC ±10%, 50/60 Hz
Output Voltage	24 VDC ±0.5 V
Maximum Output Current	10 A total (shared across connected 3500 modules)
Redundancy Switchover Time	<5 ms automatic transfer between primary and secondary inputs
Efficiency	≥90% at full load
Fault Detection	Real-time monitoring of input voltage, output voltage, and internal temperature
Protection Features	Overvoltage, undervoltage, short-circuit, and overload protection

Product Specifications

Series

The 135785-02 is an integral part of the Bently Nevada 3500 series, a comprehensive suite of machinery protection and condition monitoring solutions. The 3500 series features modular components including vibration monitors, communication gateways, system controllers, and power supplies, all engineered for seamless integration. Renowned for compliance with global standards (e.g., API 670), the series is trusted worldwide to protect critical rotating machinery in industries such as power generation and oil & gas. The 135785-02 enhances the series’ reliability by providing redundant power, a foundational element for uninterrupted monitoring system operation.

Features

Dual Input Redundancy

Dual AC input channels with automatic <5 ms switchover ensure continuous power supply to 3500 modules, eliminating downtime risks from single input failures or power grid fluctuations.

High Efficiency

≥90% efficiency at full load minimizes energy waste and reduces heat generation, maintaining stable operating temperatures in enclosed system racks.

Comprehensive Protection

Integrated overvoltage, undervoltage, short-circuit, and overload protection safeguards connected monitoring modules from electrical damage, extending system lifespan.

Real-Time Diagnostics

Built-in sensors monitor input/output voltages and internal temperatures, with fault alerts via LED indicators and system backplane communication for proactive maintenance.

Seamless 3500 Integration

Designed exclusively for the 3500 series, it connects to the system backplane to share power status data with the system controller, enabling centralized monitoring of power health.

Function

The primary function of the 135785-02 is to provide stable, redundant power to the Bently Nevada 3500 Machinery Protection System. It converts AC input power to regulated 24 VDC, distributing power to vibration monitors, communication modules, and other 3500 components. During primary input failures, it automatically switches to the secondary input within 5 ms, preventing data loss or system shutdowns. It also monitors power quality and internal conditions, alerting operators to faults via indicators and system diagnostics to ensure continuous protection of critical machinery.

Use

In industrial settings, the module is installed in the 3500 system rack, connected to dual AC power sources (e.g., main grid and backup generator). It distributes 24 VDC power to all connected monitoring modules, ensuring they remain operational even during power disruptions. Operators monitor its status via LED indicators or centralized control systems, using diagnostic data to address power issues proactively. Its redundancy ensures uninterrupted monitoring of turbines, compressors, and pumps in safety-critical applications where power reliability is paramount.

Application Fields

Power Generation

In coal, gas, and nuclear power plants, it powers turbine and generator monitoring systems, ensuring continuous protection of assets critical to grid stability and electricity production.

Oil and Gas

Protects compressor, pump, and turbine monitors in upstream drilling, midstream pipelines, and downstream refineries, supporting safe hydrocarbon production and transportation.

Chemical Processing

Powers reactor and mixer monitoring systems in chemical plants, preventing monitoring gaps that could lead to hazardous material leaks or process disruptions.

Pulp and Paper

Ensures continuous power to roller and motor monitors in mills, maintaining production efficiency and reducing downtime in high-speed manufacturing processes.

Water and Wastewater

Supports pump and blower monitoring systems in treatment plants, safeguarding critical infrastructure for public health and environmental protection.

In summary, the Bently Nevada 135785-02 is a vital redundant power supply module that underpins the reliability of the 3500 monitoring system. Its robust design, seamless integration, and fault-tolerant features make it essential for industries where uninterrupted machinery protection is critical to safety, productivity, and operational efficiency.