Configured for signal transmission in machine protection systems, the Bently Nevada 330930-065-05-05 (330930-065-05-05 Extension Cable) provides direct physical/electrical execution.

Model Configuration Matrix

• 065: 6.5 meters cable length.
• 05: Stainless steel armor, no FEP jacket, with connector protector.
• 05: Multiple agency approvals.

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics

The 330930-065-05-05 maintains the impedance matching required for the 3300 XL NSv system to achieve an average scale factor of 7.87 V/mm. To ensure accurate rotor dynamics analysis, the system must be verified against target material calibrations, specifically AISI 4140 steel. Proper gap voltage validation is performed by ensuring the proximitor output resides within the linear range of the transducer. Shielding effectiveness is used to achieve cross-talk suppression between adjacent probe cables, preventing inductive noise injection into the machine protection monitoring instrumentation.

Ordering Info

• 1 x 330930-065-05-05 Extension Cable
• 1 x Connector protector kit

Field Installation Guidelines

• Grounding and Shielding
  • Ensure the cable shield is terminated according to the specific monitor system interface requirements to prevent ground loops.
• Cable Routing
  • Maintain a minimum bend radius of 30 mm to prevent mechanical stress on the coaxial dielectric.
  • Avoid proximity to high-frequency power lines to reduce electromagnetic interference.
• Connector Integrity
  • Ensure the 3-socket connectors are free from particulate matter before mating.
  • Utilize the provided connector protector to prevent environmental moisture ingress.

Frequently Asked Questions

• Can I use this cable with a standard 3300 XL 8 mm probe?

  No. The 3300 XL NSv system utilizes specific impedance characteristics that differ from standard 8 mm systems, leading to signal inaccuracies.

• What is the consequence of exceeding the 6.5 meter length?

  Signal attenuation will increase, resulting in a shift in the system scale factor and loss of linear range capability.

• How should the stainless steel armor be terminated?

  The armor is for mechanical protection only and should not be used as an electrical ground path.

• Is this cable field-repairable?

  Field splicing is not permitted as it alters the capacitance and impedance of the transmission line, degrading signal integrity.

• Does the cable require specific operating temperatures?

  The cable assembly is rated for operation up to +177 deg C; ensure installation does not exceed this thermal limit.

• How to verify the connection is correct?

  Check the gap voltage at the proximitor terminal block; it should align with the specified -9 VDC target at the nominal operating gap.

• Are there specific mounting requirements for the cable?

  Support the cable at 30 cm intervals using non-metallic cable ties to prevent vibration-induced wear.

• What is the function of the connector protector?

  It serves as an environmental barrier to prevent the ingress of conductive dust or fluids into the mating connection interface.