Product Overview

The Bently Nevada 88149-01 (often identified by assembly P/N 80782-01A) functions as the primary Alarm Relay Outputs Assembly for the legacy 3300 Machinery Protection System. This hardware component manages the physical switching of alarm and danger signals from the monitoring rack to external control circuits. By providing robust dry-contact outputs, the 88149-01 enables the 3300 system to trigger annunciators, audible alarms, and automated emergency shutdown (ESD) sequences. We provide this unit as 100% Brand New and Original in Factory Packing, ensuring your legacy protection system remains fully operational and compliant with plant safety protocols.

Technical Specifications

Engineering Advantages

• Hardware-Based Safety Interlocks: The 88149-01 executes alarm logic through high-reliability mechanical relays. This ensures that a "Danger" trip signal reaches the plant shutdown system even if digital communication networks fail, providing a fail-safe hardware barrier for critical assets.

• Flexible Logic Configuration: The assembly supports both "Normally Energized" (NE) and "Normally De-energized" (NDE) configurations. This allows instrumentation engineers to design protection loops that meet specific safety philosophies, such as "Fail-Safe" logic for critical turbine trips.

• High-Capacity Contact Ratings: Built to handle industrial switching loads, the gold-plated relay contacts resist oxidation and ensure low-resistance connectivity. This durability is essential for systems that may sit idle for months before requiring a rapid, reliable trip response.

• Legacy System Longevity: As an original OEM spare, the 88149-01 facilitates the continued service of the Bently Nevada 3300 series. It allows facilities to maintain high safety standards without the immediate capital expenditure of a full system migration to 3500 or Orbit 60 platforms.

• Easy Installation & Maintenance: The design features clear labeling and robust terminal points. Maintenance personnel can replace or test the relay assembly without disturbing the front-mounted monitor modules, reducing potential downtime during scheduled outages.

FAQs

• Can this relay assembly be used with the Bently Nevada 3500 system?

  No. The 88149-01 is specifically designed for the 3300 series architecture. The 3500 system uses dedicated Relay Modules (like the 3500/32 or 3500/33) which are not physically or electrically compatible with the 3300 rack.

• What is the difference between P/N 88149-01 and 80782-01A?

  88149-01 represents the top-level assembly part number, while 80782-01A is frequently the silkscreened part number found on the printed circuit board itself. They refer to the same functional unit.

• Are the relay contacts suitable for direct motor control?

  No. These relays provide pilot-duty dry contacts designed to switch low-current signals to a PLC, DCS, or intermediate slave relays. Always verify your specific voltage and current requirements against the Bently Nevada 3300 series manual.

• How do I verify the "Original New" status?

  We guarantee that every 88149-01 we ship is Brand New and Original. The unit arrives in original factory-sealed packaging with full traceability, ensuring you receive a component that has never been installed or refurbished.