Product Overview

The Bently Nevada 3300/10-02-02-00 (internal part number 78422-01) is the core energy conversion module for the 3300 Series Machinery Protection System. This heavy-duty power supply is engineered to provide stable, regulated DC voltages to the entire rack backplane, supporting up to 12 monitoring modules and their connected field sensors. Occupying the primary leftmost slot of the chassis, it eliminates the need for redundant power units due to its high-capacity design. This specific configuration utilizes a dual-voltage input architecture, allowing for field selection between 115 Vac and 220 Vac. By providing clean, noise-filtered power, the 3300/10 ensures that vibration and displacement measurements remain accurate and free from electrical interference.

Electromechanical Attributes and Hardware Parameters

The 3300/10-02-02-00 is built to sustain continuous operation in high-demand industrial environments, featuring a robust physical footprint and high-efficiency heat dissipation.

• Order Number: 3300/10-02-02-00

• Alternate Part Number: 78422-01

• Input Voltage Range: 95 to 125 Vac or 190 to 250 Vac (Selectable)

• Input Frequency: 47 to 63 Hz

• Standard Rack Position: Slot 1 (Primary power location)

• Output Regulation: Precision DC conversion for transducer and monitor excitation

• Connector Type: Positive-retention security connectors for high-vibration stability

• Module Mass: 1.52 kg

• Physical Dimensions: 24.1 cm x 5.1 cm x 24.4 cm

• Protection Circuitry: Integrated over-current and surge protection

• Operating Temperature: -30°C to +65°C (-22°F to +149°F)

• Certification: Compatible with API 670 standards for machinery protection

Operational Deployment Scenarios

Critical Power for High-Speed Turbomachinery

In power generation facilities, the 3300/10-02-02-00 provides the necessary excitation voltage for Proximitor sensors on steam and gas turbines. Its reliable output ensures that shaft vibration monitoring is never interrupted, preventing unmonitored mechanical excursions.

Hazardous Area Facility Support

Designed with positive-retention connectors rather than sliding switches, this power supply is ideal for petrochemical and oil & gas applications where electrical connections must remain secure despite structural vibrations or hazardous atmosphere requirements.

Legacy Infrastructure Standardization

For plants utilizing the legacy 3300 series architecture, this module acts as a drop-in replacement to maintain system uptime. It allows maintenance teams to standardize their spare parts inventory across different voltage regions due to its selectable 115/220V input.

Centralized Monitoring Hubs

The 3300/10 serves as the single point of power entry for full-scale monitoring racks in centralized control rooms, distributing energy across the backplane to drive axial position, radial vibration, and speed modules simultaneously.

FAQ

Q: Can I use the 3300/10-02-02-00 to replace an older 3300/10-01 model?

A: Yes, the 3300/10-02-02-00 is compatible with the 3300 series rack, but you must verify your specific mounting and connector requirements as indicated by the -02-02-00 option codes to ensure proper fitment.

Q: Does this module require special tools to switch between 115V and 220V?

A: No special tools are required. The voltage selection is performed by moving an internal cable between designated connectors and ensuring the external fuse matches the selected voltage rating.

Q: Is it possible to run a second 3300/10 in the same rack for redundancy?

A: The 3300 series rack is designed for a single power supply. Due to the high-reliability, heavy-duty design of the 3300/10, Bently Nevada specifies that a second power supply is not necessary for a standard 12-monitor load.

Q: What is the significance of the 78422-01 part number?

A: 78422-01 is the specific manufacturing part number for the power supply circuit board assembly within the 3300/10-02-02-00 module, often used for cross-referencing in maintenance catalogs.

Q: What happens if the input frequency fluctuates?

A: The 3300/10 is designed to handle a wide frequency range from 47 Hz to 63 Hz, making it suitable for use in regions with 50 Hz or 60 Hz power grids without losing regulation.