Bently Nevada 3300/12 AC Power Supply | 190-250V 12-Monitor Rack

⚡ Bently Nevada 3300/12-02-20-00 AC Power Supply Module for 3300 Rack Systems

The Bently Nevada 3300/12 is a high-reliability AC power supply module engineered to deliver regulated power to up to 12 monitors and their associated transducers within a 3300 machinery protection rack. Operating on 190-250 VAC input, this left-most position module provides efficient power distribution with field-changeable voltage configuration, eliminating the need for redundant power supplies and ensuring continuous operation in critical turbomachinery monitoring applications across power generation, oil & gas, and industrial facilities.

🔋 Power Supply Specifications

🏭 Machinery Protection Applications

Turbine Monitoring Systems: Powers 3300 rack-mounted monitors tracking vibration, position, and speed in steam turbines, gas turbines, and hydro turbines (10-500 MW) where single power supply architecture reduces panel complexity by 40% and eliminates redundant power supply costs of $2K-5K per rack.

Compressor Protection Racks: Supplies regulated power to proximity monitors, seismic monitors, and temperature monitors in centrifugal compressor trains used in LNG plants, refineries, and pipeline stations where 190-250V input compatibility matches European and international electrical standards without voltage transformers.

Generator & Motor Monitoring: Energizes bearing temperature monitors, shaft position monitors, and eccentricity monitors in large generators and motors (>1000 HP) where 12-monitor capacity supports comprehensive machine surveillance with vibration, temperature, and position measurements on both drive and non-drive ends.

Pump & Fan Applications: Provides power distribution for boiler feed pump monitors, cooling water pump monitors, and induced draft fan monitors in power plants and industrial facilities where field-changeable voltage configuration enables global deployment without factory reconfiguration.

⚙️ Technical Advantages

Field-Changeable Voltage: Soldered jumper and external fuse replacement enable conversion between 95-125 VAC and 190-250 VAC configurations in 30 minutes, supporting global installations and voltage standard changes without module replacement, saving $1.5K-3K in spare parts inventory per site.

12-Monitor Power Capacity: Single power supply supports full 3300 rack population (12 monitors + transducers) versus legacy systems requiring dual supplies, reducing panel space by 25%, simplifying wiring by 50%, and eliminating power supply redundancy management complexity.

Left-Most Position Installation: Dedicated position-one mounting next to System Monitor ensures proper power distribution sequencing and eliminates installation errors that cause 30% of commissioning delays, with mechanical keying preventing incorrect rack placement.

Slow-Blow Fuse Protection: 0.75A slow-blow fuse tolerates 26A inrush current during power-up while protecting against sustained overloads, preventing nuisance trips during normal startup that cause false alarms and unnecessary maintenance calls costing $500-2K per incident.

🔧 Configuration Details

Part Number Breakdown: 3300/12-02-20-00

• 02: Input voltage 190-250 VAC 50/60 Hz (field-changeable to 01: 95-125 VAC)
• 20: Standard Power Input Module (PIM)
• 00: No special agency approvals required

📦 Module Package

• 1× Bently Nevada 3300/12-02-20-00 AC Power Supply Module
• External fuse (0.75A slow blow for 190-250V)
• Installation manual and wiring diagram
• Voltage configuration instructions

Genuine Bently Nevada product with factory certification. Essential for instrumentation engineers, vibration analysts, and maintenance teams managing 3300 series machinery protection systems. Compatible with all 3300 rack monitors including proximity, seismic, temperature, and speed monitoring modules.