Introduction
The Bently Nevada 330130-075-02-RU is a 3300 XL Standard Extension Cable designed to provide a dependable connection between a compatible 3300 XL proximity probe and Proximitor Sensor over a longer installation distance.
This configuration combines a 7.5-meter (24.6 ft) cable length with a standard cable and connector protectors. The 075 section identifies the cable length, while 02 specifies the standard cable with connector protectors. The RU suffix represents a country-specific approval configuration associated with the Russian market and applicable regional requirements.
With its extended reach and protected connector arrangement, the 330130-075-02-RU is a practical choice for machinery-monitoring installations where the sensor location is separated from the Proximitor Sensor by several meters. It is particularly useful on large rotating equipment where cable routing must follow machine structures, bearing housings, or dedicated instrumentation pathways.
The connector-protector configuration adds useful protection around the connection interface without introducing the additional bulk of an armored cable. For replacement projects, this provides an attractive balance between installation flexibility, compact routing, connector protection, and 3300 XL system compatibility.
Technical Specifications
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 330130-075-02-RU |
| Product Series | 3300 XL |
| Product Type | Standard Extension Cable |
| Cable Length | 7.5 m (24.6 ft) |
| Length Option | 075 |
| Cable Option | 02 — Standard Cable with Connector Protectors |
| Regional Configuration | RU |
| Agency Approval Option | Country-specific RU configuration |
| Cable Construction | 75 Ω Triaxial |
| Insulation | FEP |
| Connector Protection | Included |
| Armor | Not included |
| Typical Capacitance | Approx. 69.9 pF/m (21.3 pF/ft) |
| Typical Cable Diameter | Approx. 3.7 mm maximum |
| Minimum Bend Radius | Approx. 25.4 mm (1.0 in) |
| Primary Function | Probe-to-Proximitor signal extension |
| Compatible System | 3300 XL Proximity Transducer System |
| Typical Measurements | Shaft vibration, position, speed and phase reference |
Applications
Steam Turbine Monitoring
The 330130-075-02-RU provides the additional cable reach often required on large steam turbines. Proximity probes can be positioned close to bearings or shafts while the Proximitor Sensor is installed at a more accessible instrumentation location.
Gas Turbine Systems
Gas turbines require carefully routed instrumentation around compact but mechanically demanding assemblies. The 7.5-meter cable provides useful installation freedom while the connector protectors help protect the connection points during commissioning and maintenance.
Compressor Trains
Large compressors may have considerable distances between sensing locations and signal-conditioning equipment. The 7.5-meter configuration allows the cable to follow practical routing paths without immediately requiring a shorter extension.
Generator Shaft Monitoring
Generators can use proximity probes for shaft vibration and displacement measurements. A longer extension cable is useful when monitoring electronics cannot be installed directly beside the sensing location.
Pumps and Motors
The cable can be integrated into compatible 3300 XL proximity-monitoring systems used on industrial pumps and motors. Its standard construction keeps the cable relatively compact and easy to route.
Bearing Monitoring
Proximity probes positioned around fluid-film bearings often require carefully planned cable routing. The connector-protected design provides additional protection at the probe and cable interface while retaining a flexible standard cable construction.
Machinery Protection
The 330130-075-02-RU can form part of a complete proximity measurement chain used for continuous machinery protection. Maintaining the correct cable length and configuration is important for the electrical characteristics of the overall system.
Oil and Gas Equipment
Large rotating equipment in oil and gas facilities frequently requires remote positioning of monitoring electronics. The 7.5-meter reach can help accommodate these layouts, while the connector protectors provide an added layer of protection around the cable connections.
Retrofit Installations
For existing systems originally specified with a 7.5-meter standard extension cable and connector protectors, this model provides a convenient configuration match, particularly where the regional RU option must be maintained.
Advantages
Extended 7.5-Meter Reach
The biggest practical benefit is the 7.5-meter cable length. It provides substantially greater routing flexibility than the shorter 3.0, 3.5, 4.0, and 4.5-meter configurations.
Connector Protection Without Armor
The 02 configuration uses a standard cable with connector protectors. This offers additional protection at the connection points while keeping the main cable slimmer and more flexible than an armored alternative.
Compact Cable Routing
With a maximum standard cable diameter of approximately 3.7 mm, the cable can be routed through relatively confined instrumentation pathways without the larger profile associated with armored versions.
75 Ω Triaxial Construction
The 75 Ω triaxial cable construction is designed for the electrical requirements of the 3300 XL proximity transducer system and supports reliable signal transmission between the probe and Proximitor Sensor.
FEP Insulation
FEP insulation contributes to the cable's durability and makes it suitable for demanding industrial instrumentation environments.
Protected Connection Points
The connector protectors help shield the miniature coaxial interfaces from accidental contact and routine handling during installation, inspection, and maintenance.
Regional RU Configuration
The RU suffix identifies a regional configuration rather than simply another cable length. This is useful for projects where the required approval or documentation package is tied to a specific regional market.
Flexible Installation
The combination of a relatively slim cable and 7.5-meter reach makes this configuration well suited to installations where the cable needs to pass through machine structures, cable trays, panels, or other restricted routes.
Straightforward Spare-Part Identification
The part number communicates the major configuration details:
- 330130 — 3300 XL Standard Extension Cable
- 075 — 7.5-meter length
- 02 — Standard cable with connector protectors
- RU — Regional RU configuration
This makes the model easier to identify during maintenance planning and spare-parts replacement.
Balanced Protection and Flexibility
Where full armoring is unnecessary but connector protection is desirable, the 330130-075-02-RU offers a well-balanced solution. It provides a protected interface without making the entire cable unnecessarily rigid or bulky.
Technical FAQs
1. What is the Bently Nevada 330130-075-02-RU?
The 330130-075-02-RU is a 3300 XL Standard Extension Cable with a 7.5-meter length, standard cable construction, connector protectors, and an RU regional configuration.
2. How long is the 330130-075-02-RU?
The cable length is 7.5 meters (24.6 feet). The 075 portion of the model number identifies the length option.
3. What does the 02 configuration mean?
The 02 configuration specifies a standard cable with connector protectors. It is different from 00 standard cable, 01 armored cable, and 03 armored cable with connector protectors.
4. What does the RU suffix indicate?
The RU suffix identifies a regional configuration intended for the applicable Russian-market requirements. It should be treated as part of the complete ordering configuration rather than as a simple language or labeling variation.
5. Is the 330130-075-02-RU an armored cable?
No. The 02 configuration is a standard, non-armored cable with connector protectors. If additional mechanical armor is required, an appropriate 01 or 03 configuration should be selected instead.
6. Why are connector protectors useful?
Connector protectors provide additional physical protection around the miniature coaxial connection area. They can help reduce accidental damage or contamination during installation and routine maintenance.
7. What is the approximate cable diameter?
The standard 3300 XL cable has a maximum outside diameter of approximately 3.7 mm. The connector protector itself is larger, with a maximum diameter of approximately 12 mm depending on the specific dimension being measured.
8. What is the approximate weight?
A comparable 7.5-meter connector-protected configuration is listed at approximately 0.255 kg product weight. Actual shipment weight can be higher because packaging and accessories are included in shipping calculations.
9. Can it be used with a 3300 XL 8 mm proximity probe?
Yes, when the cable is paired with compatible 3300 XL components. The probe length plus extension-cable length must equal the required total length of the Proximitor Sensor configuration.
10. What should be checked before purchasing?
Confirm the 7.5-meter cable length, 02 connector-protector configuration, RU regional option, probe model, Proximitor Sensor total length, and required installation approvals. Matching the complete part number is recommended rather than selecting solely on cable length.
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