Product Overview
The BENTLY 3500/05-01-01-00-00-00 is a high-reliability power supply module designed for Bently Nevada’s 3500 Machinery Protection System (MPS), a cornerstone of critical infrastructure monitoring in power generation, oil and gas, and heavy manufacturing. As the backbone of the 3500 Rack system, this module provides clean, regulated power to up to 14 monitoring channels, ensuring uninterrupted operation of vibration, temperature, and process parameter sensors. Its redundant architecture and industrial-grade design make it indispensable in environments where equipment failure risks safety or financial losses exceeding $1 million per day.

The BENTLY 3500/05-01-01-00-00-00 supports dual hot-swappable power supplies, enabling maintenance without system shutdowns. It integrates seamlessly with Bently Nevada’s 3500/15 (monitor), 3500/25 (relay), and 3500/42M (proximitor) modules, forming a complete solution for turbine, compressor, and pump protection. The unit’s 24 VDC output meets NERC CIP and API 670 standards, critical for nuclear and petrochemical applications.

What distinguishes this power supply is its adaptive voltage regulation, which compensates for input fluctuations from 85 VAC to 264 VAC, ensuring stable operation in unstable grid environments. For industries prioritizing uptime, the BENTLY 3500/05-01-01-00-00-00 delivers a balance of ruggedness, redundancy, and legacy compatibility.

Technical Specifications

Key Features and Benefits

The BENTLY 3500/05-01-01-00-00-00 excels in unstable power environments, with a 10 kA surge rating and hold-up time exceeding 50 ms during utility dips. Its adaptive voltage regulation maintains 24 VDC output even with input fluctuations of ±15%, critical for offshore platforms or grid-unstable regions.

Diagnostic capabilities include LED indicators for power status, overload, and fan health, enabling visual checks without disassembling the rack. Operators can monitor voltage trends via Bently Nevada’s System 1 platform, identifying power quality issues before they affect sensor accuracy.

For hazardous areas, the module’s ATEX/IECEx certification ensures safe operation in Zone 2/22 environments, while its IP30 rating protects against dust ingress in indoor installations. Dual redundant fans with tachometer feedback prevent overheating, a common failure point in less robust power supplies.

Interoperability is a key strength, with compatibility spanning legacy 3500/05-01-00-00-00-00 units and modern 3500/22M tachometer modules. This flexibility allows gradual migration to higher-density rack configurations without system-wide downtime. The module’s 95% efficiency rating minimizes heat dissipation, reducing cooling loads in control rooms.

Application Scenarios

In nuclear power plants, the BENTLY 3500/05-01-01-00-00-00 powers reactor coolant pump monitors, ensuring uninterrupted vibration detection during grid fluctuations. Its NERC CIP compliance satisfies regulatory requirements for critical infrastructure protection.

Oil refineries deploy this module in FCCU compressor monitoring systems, where it sustains 3500/25 relay modules during transient voltage sags caused by motor startups. By maintaining 24 VDC output, it prevents false trips that could trigger emergency shutdowns.

The module’s IP30 rating makes it ideal for onshore gas compression stations, where it operates in dusty environments to power 3500/42M proximitor modules. Here, it provides stable power for shaft vibration monitoring, preventing costly pipeline disruptions.

In offshore FPSO vessels, the BENTLY 3500/05-01-01-00-00-00 sustains machinery protection systems during generator paralleling operations. Its 50 ms hold-up time bridges momentary power interruptions, ensuring continuous monitoring of critical turbo-compressors

Related Models

• 3500/05-01-02-00-00-00 – Enhanced variant with -40°C to 85°C operating range
• 3500/05-01-01-01-00-00 – Legacy model with 5 A output current
• 3500/15 – High-density power supply supporting 28 monitoring channels
• 3500/22M – Tachometer module requiring 3500/05 power
• 3500/05-01-01-00-01-00 – Earlier revision without ATEX certification

Installation and Maintenance

Prior to installing the BENTLY 3500/05-01-01-00-00-00, ensure the 19-inch rack is grounded and meets IP30 ingress protection requirements. Connect input power to a dedicated circuit breaker rated for 15 A, avoiding shared branches with high-current motors. Use Bently Nevada’s 3500/92 communication module to verify output voltage stability during commissioning.

For maintenance, perform quarterly checks of fan airflow using a vane anemometer, ensuring readings exceed 2.5 m/s. Validate output voltage under full load annually by connecting a 24 Ω resistive load and measuring drift beyond ±1%. Replace capacitors if ripple voltage exceeds 50 mV, indicating component aging. When upgrading firmware, always disconnect one power supply at a time to maintain redundancy.

Product Warranty

The BENTLY 3500/05-01-01-00-00-00 includes a 3-year manufacturer’s warranty covering defects in materials and workmanship, extendable to 5 years for customers enrolled in Bently Nevada’s Asset Condition Monitoring (ACM) program. Baker Hughes provides global 24/7 technical support, with field engineers available in 60+ countries for emergency troubleshooting. Spare parts are stocked in regional hubs, ensuring 72-hour delivery in most regions. For systems governed by NERC CIP or API 670 standards, Bently Nevada offers certified compliance audits and firmware updates at no additional cost during the warranty period, reinforcing its commitment to critical infrastructure resilience.