Bently Nevada 129489-01 AC Power Module – Stable rack power for 3500 condition monitoring systems

The Bently Nevada 129489-01 is an AC power module designed for the 3500 series rack. In most cases it’s used to supply clean, redundant-capable power to vibration and protection modules across the backplane. One thing I appreciate is how straightforward it is: universal AC input, hot-swap capability (with a second supply installed), and clear front LEDs that make status checks quick during walkdowns.

From my experience, plants choose this part when they want a simple, dependable AC feed into a 3500/05 rack without getting fancy on field wiring. It seems to be a favorite in compressor stations and turbine skids where uptime and fast swap-outs matter.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery time: 1 week for in-stock items; no more than one month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• Universal AC input – Typically accepts 100–240 VAC, 50/60 Hz, making it easy to deploy across sites.
• Rack-wide power distribution – Feeds the 3500 backplane rails for all monitoring/protection modules.
• Redundancy-ready – Supports dual power module configurations with automatic switchover for higher availability.
• Hot-swappable design – You can replace it online (with a second supply active) to minimize downtime.
• Front-panel status LEDs – Quick visual checks for OK/Power; technicians usually know the rack health at a glance.
• No field I/O – Power-only module; simplifies commissioning and reduces wiring errors.

Technical Specifications

Brand / Model	Bently Nevada 129489-01 (AC Power Module for 3500 rack)
HS Code	8538.90 (Parts suitable for apparatus of 8537 – industrial control assemblies)
System Compatibility	Bently Nevada 3500 series rack (e.g., 3500/05), AC power slot
Power Requirements	Typically 100–240 VAC, 50/60 Hz (universal AC input)
Output to Rack	Backplane low-voltage rails for 3500 modules; no user-accessible field I/O
Redundancy / Hot Swap	Supports dual-redundant supplies; hot-swappable when a second supply is present
Operating Temperature	Typically 0–60 °C (control cabinet environments)
Communication Interfaces	Not applicable (power-only module)
Installation Method	Front-insert, single-width module; secured to 3500 rack with captive screws

Application Fields

The 129489-01 is typically used anywhere a Bently Nevada 3500 rack is installed for rotating machinery protection and condition monitoring:

• Oil & Gas: compressor trains, gas turbine packages, pump skids
• Power Generation: steam/gas turbines, balance-of-plant assets
• Petrochemical & Refining: critical pumps, blowers, fans
• Pulp & Paper, Mining, Steel: large motor-driven equipment lines

A maintenance lead recently told us their team swapped a failed supply in under 3 minutes with no trip, thanks to the redundant setup—exactly the kind of field result this module is built for.

Advantages & Value

• Reliability first – Proven in harsh industrial environments; simple, robust design reduces failure points.
• Compatibility assured – Purpose-built for the 3500 series; no adapters, no guesswork.
• Reduced downtime – Hot-swap and redundancy usually mean maintenance windows can be measured in minutes.
• Lifecycle support – Widely stocked; easier spares planning across multiple sites.
• Total cost control – Less emergency callout time and fewer unexpected trips typically offset the spare inventory cost.

Installation & Maintenance

• Cabinet & ventilation – Install in a standard 3500 rack within a clean, ventilated control cabinet. Maintain ambient temperatures within typical control room ranges.
• Power feed – Provide a stable AC source; where possible, use UPS or conditioned power. Proper grounding and protective earth are essential.
• Redundancy – For critical assets, fit a second 129489-01 in the rack. Verify automatic switchover via front-panel indicators.
• Wiring – Terminate AC input per the rack manual; check torque values and insulation clearances. Keep power and sensor wiring segregated.
• Safety – De-energize the rack before single-supply replacement. If hot-swapping, ensure the redundant supply is healthy and the rack is in OK state.
• Routine care – Quarterly visual checks for dust; clean with dry air. Inspect terminals for looseness. No calibration or firmware updates are required for this power module.

Quality & Certifications

• CE compliant
• UL/cUL listed (typical for 3500 series assemblies)
• RoHS conformant
• Manufactured under ISO 9001 quality systems
• Supplier warranty: 365 days

Related Supporting Components

• Bently Nevada 3500/05 – System rack chassis compatible with the 129489-01
• Bently Nevada 3500/15 DC – DC power module option for sites standardizing on 24 VDC
• Bently Nevada 3500/22M – System Monitor for rack status, time sync, and communications