Bently Nevada 330730-040-02-00 3300 XL 11 mm Extension Cable

Product Introduction

The Bently Nevada 330730-040-02-00 is a 3300 XL 11 mm Extension Cable, manufactured in the U.S.A. This 4.0-meter (13.1 feet) cable is designed to connect 3300 XL 11 mm probes to Proximitor sensors, ensuring accurate signal transmission for condition monitoring. With a standard cable and connector protector option, it provides enhanced environmental protection, making it suitable for humid or moist conditions. The cable features a 75 Ω triaxial, FEP-insulated construction and is available with optional flexible stainless steel armor. This extension cable is an essential component for machinery protection systems monitoring turbines, compressors, pumps, and other rotating equipment.

Technical Parameters

• Model: 330730-040-02-00
• Cable Length: 4.0 meters (13.1 feet)
• Connector Option: Standard cable with connector protector
• Agency Approval: Not required
• Extension Cable Capacitance: 69.9 pF/m (21.3 pF/ft) typical
• Extension Cable Material: 75 Ω triaxial, fluoroethylene propylene (FEP) insulated
• Operating and Storage Temperature: -51°C to +177°C (-60°F to +351°F)
• Weight: 0.18 kg (0.5 oz/ft) for standard cable; armored version 0.56 kg (1.5 oz/ft)
• DC Resistance (4.0 m length): Center conductor to center conductor: 1.0 ± 0.25 ohms; Coaxial conductor to coaxial conductor: 0.3 ± 0.1 ohms
• Connector Material: Gold-plated brass

Parameter Analysis

The 330730-040-02-00 extension cable is engineered to maintain signal integrity over its 4-meter length. Its low capacitance (69.9 pF/m) minimizes signal attenuation, ensuring accurate vibration data transmission. The cable’s DC resistance values are tightly controlled to guarantee consistent performance. The operating temperature range of -51°C to +177°C allows deployment in extreme environments. The optional armored version provides additional mechanical protection, while the connector protector option safeguards against moisture and humidity. These parameters ensure reliable operation in demanding industrial settings.

Application Scenarios

This extension cable is widely used in machinery condition monitoring systems for:

• Turbines (steam, gas, hydro)
• Compressors
• Pumps
• Electric motors
• Generators
• Other rotating machinery

It is an integral part of the 3300 XL proximity probe system, connecting the probe to the Proximitor, which then transmits signals to monitoring equipment. The cable’s robust design ensures accurate measurement of shaft vibration and position, critical for predictive maintenance and protection.

Installation Guide

When installing the 330730-040-02-00 extension cable, follow these guidelines:

1. Ensure the system is de-energized before installation.
2. Connect the extension cable to the probe and Proximitor using the gold-plated connectors. Tighten securely but avoid over-torquing.
3. If connector protectors are used, apply silicone tape (provided with each cable) as an alternative. Note: Silicone tape is not recommended where the connection will be exposed to turbine oil.
4. Route the cable away from high-temperature surfaces and sharp edges. Use cable clamps to secure it.
5. For armored cables, ensure the armor is properly grounded according to local electrical codes.
6. After installation, verify continuity and insulation resistance using a multimeter.

Compatibility

This extension cable is compatible with Bently Nevada 3300 XL 11 mm probes and 3300 XL Proximitor sensors. It is designed for use in 5 or 9 meter system lengths, including the extension cable. The cable works with standard field wiring of 0.2 to 1.5 mm² (16 to 24 AWG), with a maximum length of 305 meters (1,000 feet) between the Proximitor and monitor. It is part of the 3300 series and is interchangeable with other 3300 XL extension cables of the same length and options.

Maintenance Advice

To ensure long-term reliability:

• Periodically inspect connectors for corrosion or damage. Clean with a suitable contact cleaner if needed.
• Check cable for cuts, abrasions, or kinks, especially in high-vibration areas.
• Verify that connector protectors are intact and properly sealed.
• If the cable is exposed to oil or chemicals, clean it with a mild solvent and inspect for degradation.
• Replace the cable if any damage is found or if measurements become erratic.

Procurement Advice

When ordering the Bently Nevada 330730-040-02-00, verify the model number to ensure it matches your system requirements. Consider the following:

• Confirm the required cable length (040 = 4.0 meters).
• Choose the appropriate connector option (02 = standard with connector protector).
• Specify agency approval if needed (00 = not required).
• If your application involves harsh environments, consider the armored version (optional).
• Purchase from authorized distributors to guarantee genuine parts and warranty support.

FAQ

Q: What is the length of the 330730-040-02-00 cable?

A: The cable length is 4.0 meters (13.1 feet).

Q: Can this extension cable be used with 3300 XL 8 mm probes?

A: No, this cable is specifically designed for 3300 XL 11 mm probes. For 8 mm probes, use the corresponding 3300 XL 8 mm extension cable.

Q: What is the maximum operating temperature?

A: The operating and storage temperature range is -51°C to +177°C (-60°F to +351°F).

Q: Is the connector protector included?

A: Yes, the model 330730-040-02-00 includes a standard cable with connector protector.

Q: Can I use silicone tape instead of the connector protector?

A: Yes, silicone tape is provided with each extension cable and can be used as an alternative. However, it is not recommended where the connection will be exposed to turbine oil.