Bently Nevada 3500/50 286566-02

Description

Basic Identification Parameters

• Brand: Bently Nevada
• Part Number: 286566-02
• System Matching Model: 3500/50 Overspeed & Differential Expansion Monitor
• Product Type: 4-Channel Integrated Safety Protection Monitor Module
• Origin: United States
• Product Weight: 0.52 kg
• Factory Warranty Period: 12 months original factory warranty
• Overall Dimensions: 241.3 mm × 24.4 mm × 99.1 mm
• Mounting Mode: Standard 19-inch EIA industrial rack plug-in installation, installed in dedicated safety slot of 3500 system rack
• Protection Grade: IP20
• Certifications: CE, UL, CSA, ATEX/IECEx Hazardous Area Certification, API 670 Compliant, Turbine Safety Standard Compliant

Electrical Specifications

• System Power Supply: 18–36 V DC, supplied by 3500 main rack power supply
• Total Power Consumption: ≤5.5 W
• Input Channel Quantity: 4 independent isolated monitoring channels
• Supported Input Signals:
  • Keyphasor pulse speed signal
  • Differential expansion proximity probe gap signal
  • Valve position 4–20 mA DC analog signal
• Isolation Level: 2500 Vrms channel-to-channel & channel-to-system galvanic isolation
• Output Signals:
  • Internal ±10 V DC measured analog signal
  • Independent SPDT overspeed trip relay contact output
  • Independent SPDT differential expansion alarm/danger relay output
• Relay Contact Rating: 5 A @ 250 VAC, 5 A @ 30 VDC
• Speed Measurement Accuracy: ±0.1% Full Scale
• Differential Expansion Measurement Accuracy: ±0.5% Full Scale
• Trip Response Time: <10 ms ultra-fast overspeed trip response
• Terminal Connection: Matched rear termination module with pluggable green screw terminals

Measurement & Functional Specifications

• Speed Measurement Range: 1 RPM – 240,000 RPM
• Differential Expansion Linear Range: 0.25 mm – 12.7 mm adjustable wide range
• Valve Position Measurement Range: Standard 4–20 mA DC
• Overspeed Protection Logic: Independent redundant overspeed detection logic
• Configurable Parameters: Overspeed alarm setpoint, overspeed trip setpoint, differential expansion alarm/trip setpoints, valve position alarm setpoints
• Built-in Filters: Configurable anti-interference high-pass/low-pass filters for speed & displacement signals
• Status Indication: Power OK, Speed OK, DE OK, Alarm, Trip Fault indicator lights

Environmental Specifications

• Operating Temperature Range: -40 ℃ to +70 ℃
• Storage Temperature Range: -51 ℃ to +85 ℃
• Operating Humidity: 0%–95% RH, non-condensing
• Shock Resistance: 15 g peak anti-vibration performance
• Electromagnetic Compatibility: Fully meets industrial EMC anti-interference standards, adapts to high EMI turbine sites

Core Functional Features

1. Integrated 3-in-1 Safety Monitoring Function

   One module completes overspeed speed protection, shaft differential expansion monitoring and turbine valve position monitoring, realizes unified safety protection control for turbine main parameters.

2. Ultra-Fast Redundant Overspeed Trip Logic

   Independent redundant high-speed overspeed detection circuit, <10 ms emergency trip response speed, fully meets strict turbine overspeed safety shutdown requirements.

3. Wide-Range Differential Expansion Measurement

   Supports ultra-wide differential expansion travel measurement, adapts to thermal expansion displacement characteristics of large steam turbine shafts.

4. Full Galvanic Isolation Architecture

   Complete channel-to-channel and channel-to-system isolation thoroughly suppresses ground loop interference, common-mode noise and surge impact, ensures safety and stability of protection logic.

5. Dual-Level Programmable Alarm & Trip Setpoints

   Supports independent configuration of alert alarm and emergency danger trip setpoints for speed, differential expansion and valve position parameters.

6. Complete Embedded Self-Diagnosis Function

   Automatic detection of keyphasor signal loss, probe disconnection, module internal faults and abnormal protection logic; outputs fault status and enters failsafe state immediately.

7. Safety-Grade Failsafe Protection Logic

   Automatically executes emergency trip protection under power failure, signal abnormal and module fault conditions, avoids machinery damage caused by protection failure.

8. Plug-in Hot-Swap Structure

   Supports online plug and replacement without powering down the entire monitoring system, greatly reduces maintenance downtime.

9. Perfect Matching with 3500/25 Keyphasor Module

   Seamlessly cooperates with 97199-01 keyphasor interface module to obtain high-precision speed and phase reference signals.

Applicable Application Scenarios

• Power generation industry: Steam turbines, gas turbines, turbo-generator unit overspeed emergency protection, shaft differential expansion monitoring
• Petroleum & natural gas industry: Turbine-driven compressor units, natural gas pipeline turbine units
• Petrochemical industry: Turbine drive centrifugal compressors, steam turbine process equipment
• Thermal power auxiliary turbine rotating machinery safety protection systems
• Industrial sites requiring strict turbine safety overspeed shutdown protection
• Hazardous area industrial sites with ATEX/IECEx certification requirements
• OEM turbine manufacturing and industrial turbine safety protection monitoring systems

System Compatibility

• Fully compatible with Bently Nevada 3500 series full monitoring system: 3500/05 rack, 3500/15 power supply modules, 3500/20 interface module, 3500/25 (97199-01) keyphasor module, all I/O modules and relay modules
• Perfectly matches 3300 XL NSv series differential expansion proximity probes, keyphasor probes and extension cables
• Seamlessly connects to System 1 diagnostic analysis platform, PLC, DCS and SCADA control systems
• Compatible with official 3500 rack configuration software V3.3 and above versions
• Fully complies with API 670 international machinery protection standard requirements