Product Overview
Bently Nevada 3300/53-03-01-00-50-06-01-00-00 is a fully configured ordering variant within the Bently Nevada 3300/53 Overspeed Protection System family, rather than a standalone connector product. The base 3300/53 module is a dedicated overspeed detection and tachometer module for the 3300 Series Machinery Protection System, accepting proximity probe or magnetic pickup inputs and providing relay-based trip outputs for critical rotating machinery protection. The complete suffix string -03-01-00-50-06-01-00-00 encodes specific factory options for power input, events-per-revolution scaling, recorder full-scale range, agency approvals, and relay coil voltage ratings.
The 3300/53 platform supports two-channel (1oo2 voting) or three-channel (2oo3 voting) architectures, making Bently Nevada 3300/53-03-01-00-50-06-01-00-00 suitable for API 670-compliant overspeed protection on steam turbines, gas turbines, compressors, and large motors. The module processes pulse frequency from speed transducers to derive shaft RPM, compares the measured value against programmed trip setpoints, and de-energizes or energizes output relays accordingly. Front-panel indicators provide Channel OK and Overspeed status, while the module also supports test mode, gap voltage readback, and peak-hold functions for commissioning and diagnostics.
For facilities maintaining legacy 3300 racks, 3300/53-03-01-00-50-06-01-00-00 represents a factory-configured replacement or spare that must match the original ordering code precisely, as the suffix digits define relay coil voltage and agency approval compatibility with the existing installation. The 3300/53 platform is a discontinued legacy product, but verified spare units remain available through the secondary market to support installed bases that have not migrated to the 3500 series.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 3300/53-03-01-00-50-06-01-00-00 |
| Manufacturer | Bently Nevada (Baker Hughes) |
| Product Type | Overspeed Protection System / Tachometer Module |
| Base Model | 3300/53 |
| System Platform | Bently Nevada 3300 Series Machinery Protection Rack |
| Input Type | Proximity probe or magnetic pickup |
| Voting Architecture | Two-channel (1oo2) or three-channel (2oo3) |
| Power Input Options | 110 VAC (01) or 220 VAC (02), per suffix BB |
| Events Per Revolution | Hundreds + units configuration via suffix CC/DD |
| Recorder Full Scale | 1,000 to 20,000 RPM range selection |
| Agency Approval | CSA or BASEEFA, per suffix FF |
| Relay Coil Voltage | 12/24/48/110 VDC or 120/240 VAC, per suffix GG |
| Operating Temperature | 0°C to +65°C |
Main Features and Advantages
Configuration-specific replacement integrity: The full ordering string 3300/53-03-01-00-50-06-01-00-00 is not interchangeable with other 3300/53 suffixes. The -01 in the BB position indicates a 110 VAC power supply configuration, while the -50 and -06 positions define events-per-revolution scaling and recorder full-scale calibration. The -01 in the FF field specifies CSA agency approval, and the final -01 in the GG field designates a no-coil-1-checking relay configuration. Matching these digits against the equipment identification decal is essential when ordering a replacement 3300/53-03-01-00-50-06-01-00-00.
Redundant voting for trip reliability: The Bently Nevada 3300/53-03-01-00-50-06-01-00-00 can be integrated into a 2-out-of-3 voting arrangement, where three independent tachometer channels process the same shaft speed signal and the trip logic requires two concurrent overspeed confirmations before initiating shutdown. This architecture suppresses false trips caused by a single failed probe or channel while maintaining high availability of the protection function.
Diagnostic and test capabilities: The module supports a Test Mode that simulates overspeed conditions for periodic proof-testing of the trip path without physically over-speeding the machine. Gap voltage readback allows technicians to verify proximity probe health before placing the 3300/53-03-01-00-50-06-01-00-00 channel into service, and the peak-hold function captures maximum observed speed for post-event analysis.
