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The Bently Nevada 16925-20, also cataloged as the 16925 Interconnect Cable, operates as a dedicated hardware component for signal transmission between monitoring transducers and interface modules within machine protection networks.

Hardware Specifications

Parameter Specification
Model 16925-20
Brand Bently Nevada
Origin USA
Dimensions 20 ft (6.1 m) length
Operating Temp -40 deg C to +177 deg C (Standard)
Power Consumption N/A (Passive component)
Cable Type 3-wire Interconnect

Rotor Dynamics and Signal Integrity

The 16925 cable assembly is designed to facilitate the high-frequency signal propagation required for accurate rotor dynamics observation. To ensure data integrity, the physical installation must prioritize the maintenance of the nominal -10 VDC gap voltage target for eddy-current probe interfaces. Any deviation in the impedance of the signal path, caused by damaged insulation or improper shield termination, can introduce artifacts into the vibration waveform. Cross-talk suppression is achieved through the integrated shielding layer; therefore, it is mandatory that the shield be terminated correctly at the instrumentation ground to prevent ground loops that interfere with phase measurement accuracy.

Frequently Asked Questions

Q: Is the 16925 cable assembly compatible with non-Bently Nevada transducers?

A: The 16925 series is factory-calibrated for specific Bently Nevada transducer interfaces. Use with third-party sensors may result in impedance mismatches, impacting the frequency response and signal-to-noise ratio of the monitoring system.

Q: What are the requirements for cable termination?

A: The assembly must be terminated in accordance with the specific monitoring module's terminal block configuration. Ensure all connections are tight to prevent resistive heating and signal fluctuation.

Field Installation Guidelines

  1. Route the cable through dedicated instrumentation pathways, maintaining a minimum 30 cm separation from high-voltage AC lines to prevent induced noise.
  2. Ensure the connector mating faces are clean and moisture-free before joining.
  3. Observe a minimum bend radius of 10 times the cable diameter during installation to prevent damage to the internal conductors and shielding.
  4. Secure the cable using non-conductive cable ties or clips at 1 m intervals to mitigate the effects of machine-induced vibration.

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