Description
Application Scenarios:
A combined-cycle power plant was building the turbine supervisory instrumentation (TSI) system for a new steam turbine generator. The scope covered shaft vibration at multiple bearings, axial thrust position, differential expansion, eccentricity, speed and keyphasor, bearing metal temperatures, plus relay outputs into the emergency trip system and a data path into the plant’s condition-monitoring platform. That is a lot of different measurement types, and the engineering question was whether they belonged in one rack or several.
Putting them in one 3500/05 full-size rack settled it. All monitor modules share a common backplane, so alarm voting, OK status and rack-wide reset are handled in hardware rather than wired between cabinets. The rack accepted two 3500/15 power supplies in redundant configuration — either supply can carry the full rack — and the 3500/22M TDI in the interface slot provided both rack configuration and the Ethernet gateway to System 1. When the plant later added a feedwater pump train to the same system, two empty slots remained in the same rack: new monitors, no new chassis, no new cabinet penetration, no new power supply.
The pain point the 3500/05 addresses is integration cost and expansion risk. Before modular protection racks, each measurement type had its own instrument, its own power arrangement and its own wiring to the trip system. A rack turns that into a single mechanical assembly with one backplane, one power architecture, one grounding point and one configuration tool — and it leaves room to grow.
Parameter:
| Main Parameters | Value/Description |
|---|---|
| Product Model | 3500/05 (System Rack; configured as 3500/05-AA-BB-CC-DD-EE) |
| Manufacturer | Bently Nevada — Baker Hughes |
| Product Category | System rack / chassis for the 3500 Machinery Protection System |
| Rack Size Options | A01: full-size 19-inch EIA, 14 module slots; A02: 12-inch mini-rack, 7 module slots |
| Power Supply Positions | Dedicated left-hand positions for 3500/15 AC or DC supplies; single or redundant (lower slot primary, upper slot redundant) |
| Interface Module Slot | Slot adjacent to the power supplies for the Rack Interface Module (RIM) or 3500/22M Transient Data Interface |
| Mounting Options | B01 panel mount (full size), B02 rack mount to 19-inch EIA rails, B03 bulkhead mount (front access, full size only), B04/B05 panel and rack mount for mini-rack |
| Backplane | Integral multi-layer backplane providing inter-module communication and distributed power to every module position; supplied with rack interface/termination modules |
| Hot Swap | Modules and power supplies can be removed and inserted under power in redundant configurations, without disrupting rack operation |
| Agency Approval Options | C00 none; C01 CSA/NRTL/C Class I Division 2; C02 ATEX/IECEx/CSA Class I Zone 2 |
| European Compliance | E01 CE marking |
| Dimensions (Full Size) | Approx. 482.6 mm W × 265.9 mm H × 342.9–349.3 mm D (19.0 × 10.5 × 13.5–13.75 in) |
| Weight | Approx. 7.3 kg with backplane and interface modules, power supplies excluded; bare-chassis listings vary from 3 to 4.5 kg — confirm what is included in your quote |
| Operating Temperature | 0 °C to +65 °C typical for the rack; some configurations and module complements are specified from −20 °C or −30 °C to +65 °C |
| Storage Temperature | −40 °C to +85 °C |
| Humidity | Up to 95% non-condensing; tolerant of light condensation when conformal coating is specified |
| Compliance and Standards | Designed into API 670 compliant protection systems; EN 61000-6-2 and EN 61000-6-4 EMC; EN 61010-1 safety; CE, CSA, UL/cUL; DNV/ABS marine approvals available |
| Hazardous-Area Internals | Requires the 3500/04-01 Internal Barrier Earthing Module when internal barriers are fitted — mandatory for hazardous-area compliance |
| Environmental Housing | Compatible with the 3500/06 Weatherproof Housing for outdoor or harsh installation (not with bulkhead-mount configurations) |
| Available Accessories | I/O module cover kits (e.g. 128031-01) to close unused slot openings, maintain airflow and keep dust out |
