BENTLY NEVADA

1. Bently Nevada: Leading global supplier of turbomachinery condition monitoring and protection systems
2. 3500/25: Keyphasor input monitor card model for the 3500 rack system
3. 128718-01: Unique factory spare part number of the matched external terminal block
4. Keyphasor: Transducer for capturing rotor phase reference pulse signals
5. External Termination Block: Offline wiring terminal assembly used for signal transfer and cable management between field sensors and rack modules

2. Core Product Functions

1. Centralized Transfer and Distribution of Field Cables It aggregates multiple field keyphasor transducer cables for standardized wiring layout. It avoids messy wiring caused by directly plugging numerous cables into rack cards and simplifies inspection and transducer replacement work.
2. Shield Grounding for Keyphasor Signals It is equipped with dedicated shield grounding terminals to collect all cable shielding layers of keyphasor probes, balance loop ground potential and suppress electromagnetic interference. It prevents drift of phase & speed pulse signals and eliminates false alarms.
3. Safe Disconnection Point for Maintenance As an intermediate transfer node between field transducers and the 3500/25 card, it allows technicians to disconnect jumpers without removing field sensor cables. It isolates live rack circuits from field loops and reduces risks of electric shock and accidental unit interlock during maintenance.
4. Wiring Compliance for Intrinsically Safe Explosion-proof Circuits When keyphasor probes are installed in hazardous explosive zones, it supports standardized grounding wiring together with intrinsic safety barriers to meet international hazardous area wiring codes.
5. Protection for 3500/25 Card Interfaces All wear and tear from frequent cable plugging and pulling occurs on the external terminal block instead of the precise built-in connectors of the 3500/25 monitor card. It effectively reduces damage to high-value rack modules and cuts long-term maintenance costs.

3. Industrial Applications

1. Compatible System & Matching Components Specially designed to pair with the Bently Nevada 3500/25 Keyphasor Monitor Card, compatible with all magnetoelectric and Hall-effect keyphasor transducers, as well as full-range 3500 racks and intrinsic safety barriers.
2. Applicable Rotary Equipment Turbo-generators, gas turbines, process compressors, large fans, steam turbines and heavy-duty rotary turbomachinery for refineries and chemical plants.
3. Main Application Purposes

• Transfer wiring from field keyphasor probes to the 3500/25 keyphasor card for neat and standardized cabinet wiring;
• Centralize shield grounding of sensor cables to filter industrial electromagnetic interference and ensure accurate collection of rotor phase and rotational speed data;
• Provide independent maintenance breakpoints to safely isolate field signal loops for transducer calibration and replacement;
• Complete standardized grounding wiring for intrinsically safe circuits under explosion hazardous working conditions to pass plant safety inspection;
• Protect internal connectors of the 3500 rack to extend service life of core monitoring modules.

4. Applicable Industries & Scenarios Thermal power plants, gas power stations, petroleum refineries, coal chemical plants, oil & gas compressor stations, metallurgical explosion-proof workshops and other facilities with large turbomachinery units.

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