Bently 3500 25 125792-01

Product Introduction
The 3500/25 (125792-01) is the electronic Keyphasor module within the 3500 Machinery Protection System. It receives signals from Keyphasor sensors to provide precise speed and phase reference signals, which are fundamental for rotor dynamics analysis, dynamic balancing, and vector vibration analysis.

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Description

Bently 3500 25 125792-01

Technical Specifications

  • Model: 3500/25 (125792-01)
  • Sensor Type: Eddy Current Proximity Probe or Magnetic Pickup
  • System Compatibility: 3500 Series Machinery Protection System

Functional Features

  • High-Precision Speed Measurement: Provides high-resolution speed and phase measurement for advanced diagnostics.
  • Flexible Input: Supports multiple Keyphasor sensor types for versatile installation.
  • Programmable Alarms: Supports overspeed and underspeed alarm generation.

Application Scenarios
Widely applied to steam turbines, compressors, and generators requiring rotor dynamics analysis, dynamic balancing, and comprehensive vibration monitoring.

Performance Parameters

  • Speed Measurement Accuracy: Extremely high precision
  • Phase Resolution: High-resolution phase tracking
  • Operating Temperature: -30°C to +65°C

Material Composition
High-strength flame-retardant enclosure with internal circuit boards treated with tri-proof coating.

Structural Characteristics
Standard 3500 module size with front-panel channel status and alarm indicator LEDs.

Working Principle
Receives pulse signals from Keyphasor sensors, measures the time interval between pulses to calculate speed, and extracts the rising edge of the pulse as a phase reference signal, distributing it to other monitoring modules via the backplane bus.

Installation Requirements
Insert into the designated slot in the 3500 rack. Keyphasor sensor wiring must use shielded cables with proper grounding.

Precautions for Use
Accurately configure the Keyphasor sensor type and gear tooth count in the software. Ensure the Keyphasor mark on the shaft is clean and undamaged.