BENTLY NEVADA 350046-03-00 (3500/46M Hydro Monitor) – High-reliability vibration and position protection for hydro machinery

The BENTLY NEVADA 350046-03-00 corresponds to the 3500/46M Hydro Monitor with option code -03-00. In many cases this module is used as the dedicated hydro machine monitor in a 3500 rack, combining proximity probe inputs and Keyphasor phase/speed to protect turbines, generators and large pumps. From my experience, it’s the card plants lean on when they want dependable casing/shaft vibration, radial/axial position, and eccentricity measurements without complicating the rack design. You might notice that it plugs into the standard 3500 rack and works with familiar 3300 XL proximity transducers, delivering buffered BNC signals at the front and protection logic through the rack backplane.

Order Placement Process and Guarantees

• Warranty: 365 days.
• Lead time: Typically 1 week if in stock; no more than 1 month at the latest.
• Payment: 50% advance payment; full payment prior to delivery.
• Express options: FedEx, UPS, DHL.

Key Features

• Designed for hydro assets – Tailored for turbines and generators where axial position, radial vibration, and eccentricity are critical.
• Multi-channel monitoring – Typically supports up to four measurement channels plus phase/speed via Keyphasor for vector and diagnostic work.
• Works with 3300 XL proximity probes – Eddy-current probes for shaft position and vibration are commonly used in hydro services.
• Buffered BNC outputs – Front-panel access to raw sensor signals for portable analyzers without disturbing protection.
• Integrated protection logic – Alarms and trips are handled through the 3500 rack; relays are managed via 3500/33 (when fitted).
• Rack-based simplicity – Powered via the 3500 backplane; configuration managed with standard 3500 tools, which keeps maintenance familiar.
• System communications – Data exposure through the 3500/92 gateway (Modbus TCP, etc.) for DCS/PLC integration.
• Option -03-00 variant – This option set typically defines I/O style and firmware compatibility in line with hydro applications.

Technical Specifications

Application Fields

This module is typically selected for hydroelectric plants and large water infrastructure where machine protection must be both conservative and dependable. Common use cases include:

• Hydro turbines: monitoring radial/axial shaft position, vibration, and eccentricity for bearing protection.
• Generators: shaft vibration trending with Keyphasor reference for phase-based diagnostics.
• Large pumps and water conveyance assets: vibration/alarm protection integrated to DCS/PLC.
• Refurbishment projects: drop-in upgrades in existing 3500 racks to tighten trip logic and add buffered outputs.

Advantages & Value

• Reliability: Mature 3500 platform with a strong track record in continuous protection service.
• Compatibility: Pairs with 3300 XL probes and standard 3500 components (relays, comms, power), which typically lowers project risk.
• Lifecycle cost: Reusable transducers, buffered outputs for portable data collectors, and less ad-hoc wiring save labor over time.
• Integration: Clean handoff to plant systems through 3500/92 gateway; Modbus mapping keeps commissioning straightforward.
• Supportability: Field-proven configuration tools and plenty of installed base knowledge for maintenance staff.

Installation & Maintenance

• Cabinet & rack: Install in a standard 19-inch 3500 rack inside a clean, ventilated cabinet; maintain ambient 0–65 °C.
• Grounding & shielding: Use proper shield termination at the I/O module; maintain single-point grounding to minimize noise.
• Wiring: Route Keyphasor and proximity probe cables separately from power lines; observe bend radius and probe extension rules.
• Relays & trips: Connect trip circuits through the 3500/33 Relay module; verify alarm/trip logic during commissioning.
• Routine checks: Periodic probe gap verification and scale-factor confirmation; review alarm logs and trending monthly.
• Firmware & configuration: Keep firmware aligned with rack revisions; back up configuration before any update.
• Cleaning: Light dust removal from front panels and cabinet filters to maintain airflow and prevent heat buildup.

Quality & Certifications

• Typically compliant with CE and UL/cUL for safety and EMC.
• RoHS alignment for material restrictions (varies by revision).
• Manufactured under ISO 9001 quality systems by the brand.
• Our sales warranty: 365 days from delivery; DOA/functional issues supported with replacement or repair options.

Supporting Components & Compatibility

• Transducers: 3300 XL proximity probes and extension cables for shaft position/vibration; Keyphasor probe for phase/speed.
• Rack elements: 3500 power supply, 3500/92 Communication Gateway, 3500/33 Relay modules, and terminal I/O modules.
• Accessories: Front-panel BNC access for portable data collectors and analyzers, often used during outage diagnostics.
• System note: For 4–20 mA outputs to DCS, many sites add a 3500/65 4–20 mA module rather than using the monitor card itself.

Quick customer note: a hydro client recently swapped a mixed set of general-purpose monitors for 350046-03-00 units across three bays. They mentioned fewer nuisance trips and cleaner buffered signals for their weekly route data—small differences, but it seems to be what keeps operations predictable.