BENTLY NEVADA 125840-02 3500/15 Low Voltage AC Power Input Module

Overview

The BENTLY NEVADA 125840-02 is a low‑voltage AC power input module (PIM) for the BENTLY NEVADA 3500 machinery monitoring system. The BENTLY NEVADA 125840-02 belongs to the 3500/15 power supply family and converts 85–132 V AC mains into regulated internal DC power to feed all rack modules, including vibration monitors, relay modules and communication cards. The BENTLY NEVADA 125840-02 supports redundant power configuration for continuous machinery protection of turbines, generators, compressors and other critical rotating equipment. As a discontinued spare module, the BENTLY NEVADA 125840-02 is widely stocked for overhaul and maintenance of legacy 3500 racks in power plants, petrochemical and offshore facilities.

Features

The BENTLY NEVADA 125840-02 accepts 85–132 V AC, 47–63 Hz input and delivers stable internal bus power for the 3500 rack. The BENTLY NEVADA 125840-02 integrates built‑in fusing and surge protection circuits to prevent damage from input transients and overload. The BENTLY NEVADA 125840-02 supports hot‑swap replacement when a redundant second power supply is installed, avoiding system shutdown during maintenance. It connects to the 3500 backplane through dedicated edge connectors and sends power status and fault signals to the rack monitor. The BENTLY NEVADA 125840-02 is designed as a half‑height module and occupies the dedicated power slot on the left side of the 3500 chassis. It has visual status indicators to report power good, fault and fuse failure conditions.

Specs

Device Type: Low Voltage AC Power Input Module (PIM) Model: BENTLY NEVADA 125840-02 Applicable System: Bently Nevada 3500 machinery monitoring rack Input: 85–132 V AC, 47–63 Hz Structure: Half‑height rack module Installation: Dedicated power slot on 3500 chassis Protection: Internal replaceable fuse, overcurrent, undervoltage, short‑circuit protection Diagnosis: Visual status LED indicators Mounting: Rack plug‑in module Protection Grade: IP20 inside cabinet Operating Temperature: 0°C to +60°C

Principle

The BENTLY NEVADA 125840-02 receives AC mains power and performs rectification, filtering and voltage regulation to generate the required internal DC bus voltage for the entire 3500 rack. All monitoring modules share this regulated power supply. When two power modules are fitted, the BENTLY NEVADA 125840-02 works in parallel redundant mode. If one module fails, the second unit automatically takes over without interrupting monitoring and protection functions. The BENTLY NEVADA 125840-02 continuously monitors input voltage, internal temperature and output load, and triggers fault indication and shutdown when abnormal conditions are detected.

Applications

The BENTLY NEVADA 125840-02 provides reliable rack power supply for Bently Nevada 3500 machinery protection systems deployed in thermal power plants, petrochemical plants, refineries and offshore platforms. It supports continuous vibration and position monitoring for steam turbines, gas turbines, generators and centrifugal compressors. The BENTLY NEVADA 125840-02 is commonly stocked as spare part for emergency replacement and scheduled overhaul of legacy 3500 rack power assemblies. It also supports power loop renovation and redundant power commissioning projects.