Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330930-045-03-CN |
| Brand | Bently Nevada |
| Product Type | 3300 NSv Extension Cable |
| Origin | USA |
| Operating Temp | -51 deg C to +177 deg C (-60 deg F to +351 deg F) |
| Storage Temp | -51 deg C to +177 deg C (-60 deg F to +351 deg F) |
| Cable Length | 4.5 metres (21.3 feet) |
| Cable Construction | 75 ohm coaxial cable with FEP insulation |
| Connector Option | Without stainless steel armor, with connector protectors |
| Agency Approval | CN country-specific approvals |
| Center Conductor DC Resistance | 0.220 ohm/m (0.067 ohm/ft) |
| Shield DC Resistance | 0.066 ohm/m (0.020 ohm/ft) |
| Cable Capacitance | 69.9 pF/m (21.3 pF/ft) typical |
| Power Consumption | Passive cable component, no external power required |
Eddy-Current Signal Extension and Rotor Dynamics Interface
The 330930-045-03-CN extension cable transfers eddy-current probe signals while maintaining electrical characteristics required by 3300 NSv proximity measurement systems. Therefore, the cable impedance, resistance, and capacitance values support accurate vibration and shaft position signal transmission.
The cable assembly maintains probe system scaling performance by preserving the electrical relationship between the proximity probe, extension cable, and Proximitor sensor. Additionally, the FEP insulation material supports operation across wide temperature ranges encountered in rotating equipment monitoring applications.
The extension cable design also supports gap voltage validation procedures, where Bently Nevada systems commonly evaluate probe operating conditions around the -10 VDC target range. Furthermore, controlled cable capacitance helps reduce signal distortion and supports rotor dynamics measurement accuracy.
Frequently Asked Questions
Q: What is the function of the Bently Nevada 330930-045-03-CN cable?
A: The cable extends the connection distance between a 3300 NSv proximity probe and the associated monitoring electronics while maintaining specified electrical characteristics.
Q: Does the 330930-045-03-CN extension cable require external power?
A: No. The extension cable is a passive signal transmission component and does not consume external electrical power.
Q: What connector configuration does the -03 option provide?
A: The -03 configuration provides a cable without stainless steel armor and includes connector protectors.
Field Installation Guidelines
- Install the extension cable according to the specified probe system wiring requirements.
- Maintain separation from high-voltage power cables and sources of electromagnetic interference.
- Connect cable shielding according to the monitoring system grounding instructions to reduce electrical noise.
- Avoid sharp bending, excessive mechanical stress, or damage to the FEP insulation during installation.
- Verify connector engagement and protection before system commissioning.
- Confirm probe, extension cable, and Proximitor sensor compatibility before applying operating power.
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