Description

The Bently Nevada 125840-02 is a Low Voltage AC Power Input Module designed for accepting external low-voltage AC line power and interfacing directly with the 3500/15 AC Power Supply module in the 3500 Machinery Protection System. Operating as a half-height module positioned in the special rear slot directly behind its associated front-installed power supply, the 125840-02 receives line voltage, routes it through an onboard replacement fuse, and routes the conditioned power to the 3500 rack system. It supports a nominal 110 Vac input with an operating range of 85 to 132 Vac rms (and 85 to 125 Vac rms for PIM revisions prior to Rev. R paired with AC Power Supply Modules prior to Rev. M) to power a full rack without requiring a minimum rack load.

Features

• Special half-height rear module mounting positioned directly behind the associated front power supply module
• Onboard fuse protection utilizing part number 01720025 replacement fuse
• Accepts a nominal input voltage of 110 Vac over an operating range of 85 to 132 Vac rms
• Accepts input line frequency from 47 to 63 Hz
• Supports primary or redundant power configuration in designated left-side rack slots

Applications

• Power input interface for Bently Nevada 3500 Series Machinery Protection Systems
• Low-voltage AC main power connection for 3500/15 AC Power Supply Modules
• Rotating machinery and turbomachinery condition monitoring installations requiring 110 Vac field power

Ordering Information

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Install the module in the special half-height rear slot located directly behind the associated front 3500/15 power supply module.
• Secure input field wiring to the designated LN1, LN2/NEUT, and GND screw terminals on the rear terminal strip.
• Verify that field voltage is de-energized prior to installing or removing the input wiring and terminal assembly.
• Ensure proper insertion of the specified 01720025 replacement fuse into the PIM fuse holder.

Compliance and Certifications

• EMC Standards: EN 61000-6-2 (Immunity for Industrial Environments), EN 61000-6-4 (Emissions for Industrial Environments)
• EMC Directive: European Community Directive 2014/30/EU
• Electrical Safety Standard: EN 61010-1
• Low Voltage Directive: European Community Directive 2014/35/EU
• CSA / NRTL/C (Approval Option 01): Class I, Division 2, Groups A, B, C, D; Class I, Zone 2; Ex nC [L] IIC T4 Gc / AEx nC IIC T4 Gc (T4 @ Ta = -20 degC to +65 degC)
• ATEX / IECEx (Approval Option 02): II 3 G, Ex nA nC ic IIC T4 Gc (T4 @ Ta = -20 degC to +65 degC)