Bently Nevada 128718-01 3500/25 Keyphasor External Termination Block

Description

The Bently Nevada 128718-01 is a Keyphasor External Termination Block (Euro Style Connectors) designed for interconnecting phase and speed transducer signals to the 3500/25 Enhanced Keyphasor Module within the 3500 Machinery Protection System. The unit accepts field wiring from proximity probes or magnetic pickups and interfaces directly with the 3500 system I/O modules via dedicated external termination cables. It serves as a field connection interface for distributing phase, timing, and rotative speed measurement signals to 3500 rack monitor modules and external diagnostic systems.

Features

• Euro Style screw-terminal connectors for secure field wiring termination.
• External termination interface designed for routing Keyphasor input and output signals to 3500/25 I/O modules.
• Compatible with proximity probe transducers and magnetic pickup sensor inputs.

Applications

• Machinery vibration monitoring and diagnostics in the 3500 Machinery Protection System.
• Field signal termination for rotating machinery shaft speed and phase vector measurements (1× vibration amplitude and phase).

Technical Specifications

Installation Guidelines

• Module Compatibility: External Termination (ET) Blocks cannot be used with Internal Termination I/O modules.
• Wiring Setup: External Termination Blocks and their corresponding cables (PN 129530) must be ordered separately when utilizing I/O modules configured for External Termination.
• Electrostatic Precaution: Use a grounding wrist strap during installation to prevent static damage to connected system components.

Compliance and Certifications

• FCC: Complies with Part 15 of the FCC Rules.
• EMC Directives: European Community Directive 2014/30/EU; Standards EN 61000-6-2 (Immunity), EN 61000-6-4 (Emissions).
• Electrical Safety: European Community Directive LV Directive 2014/35/EU; Standard EN 61010-1.
• RoHS: European Community Directive 2011/65/EU; China RoHS SJ/T 11364-2024.
• Maritime: DNV GL rules for classification (Ships, offshore units, high speed and light craft); ABS Rules for Condition of Classification, Part 1.
• Hazardous Area Approvals: cNRTLus (Class I, Division 2, Groups A, B, C, D / Class I, Zone 2); ATEX/IECEx (Ex nA nC ic IIC T4 Gc / Ex ec nC ic IIC T4 Gc).