Configured for signal transmission between proximity probes and Proximitor sensors, the Bently Nevada 330930-060-00-CN (330930-060-00-CN Extension Cable) provides direct physical execution of low-loss coaxial signal routing within turbine monitoring (TSI) platforms.

Model Nomenclature Breakdown

The 330930-060-00-CN is structured according to Bently Nevada's 3300 XL transducer system standards:

• 330930: 3300 XL extension cable.

• 060: Cable length (6.0 meters).

• 00: Not applicable (Connector type).

• CN: Agency approval (China CCC/CNEx standards).

Hardware Specifications

Signal Integrity and Rotor Dynamics

This extension cable is engineered to maintain system impedance consistency, which is critical for accurate eddy-current probe scaling. Because the 3300 XL system is calibrated as a set (Probe + Extension Cable + Proximitor), the cable length is integrated into the overall transducer response curve. The construction utilizes high-performance shielding for effective cross-talk suppression, ensuring that vibration signals remain isolated from ambient electromagnetic interference in high-velocity turbomachinery monitoring applications. Proper cable selection is necessary to maintain the -10 VDC target gap voltage and prevent signal attenuation in long-run installations.

Ordering info

• One (1) 330930-060-00-CN Extension Cable.

• Protective connector caps.

• Technical compliance documentation (CNEx certified).

• Note: Extension cables must be matched to the system length calibration (e.g., 5-meter or 9-meter total system length).

Field Installation Guidelines

• Routing: Install cables in dedicated conduit or cable trays; keep them separated from high-voltage AC power lines to minimize inductive interference.

• Connection: Ensure the click-loc connectors are fully engaged; use a firm, straight-line motion until the positive "click" is felt to ensure electrical continuity.

• Protection: Apply dielectric grease to connector threads in high-humidity or corrosive environments to prevent oxidation and contact resistance.

• Strain Relief: Use appropriate strain relief clamps to prevent tension on the cable connectors, which can lead to center-pin misalignment or breakage.

• Bend Radius: Adhere to the minimum bend radius specifications to avoid damaging the internal dielectric or shielding of the coaxial cable.

Frequently Asked Questions

• Does the length of the extension cable affect the calibration?

  Yes. The 3300 XL system is calibrated for a specific total system length (usually 5 or 9 meters). Changing the cable length requires recalibrating the Proximitor.

• What does the "CN" suffix indicate?

  The "CN" suffix confirms the cable assembly meets China CCC and CNEx hazardous area certification requirements for local compliance.

• Is this cable compatible with legacy 3300 series probes?

  While physical connectors may match, 3300 XL cables are specifically engineered for the 3300 XL system; system-wide compatibility must be verified to ensure accuracy.

• Can I cut this cable to a shorter length?

  No. Altering the cable length will change the system impedance and frequency response, invalidating the factory calibration and degrading vibration data.

• How do I protect the connector threads?

  Use the provided protective caps during installation and keep the connectors clean; avoid using sharp tools near the gold-plated contacts.

• What is the maximum operating temperature?

  The cable is rated for continuous operation up to +177 deg C; ensure the routing path does not pass through areas exceeding this thermal limit.

• Is the cable armored?

  This specific model (330930-060-00-CN) is the standard configuration; check if your specific site requirements necessitate an armored variant for mechanical protection.

• How is a damaged cable identified?

  Common signs include erratic "Gap Error" readings, noise spikes in the vibration signal, or a loss of signal continuity when the cable is flexed.