Bently Nevada 330930-065-03-05 3300 NSv Extension Cable

Description

330930-065-03-05: 3300 NSv extension cable configuration specified by a 6.5-meter length (Option 065), unarmored cable construction with integrated connector protector (Option 03), and multiple hazardous area approvals (Option 05).

This 75-ohm coaxial 3300 NSv Extension Cable acts as the electrical link between a 3300 NSv proximity probe and a 3300 XL NSv Proximitor Sensor (Model 330980). It transmits high-frequency eddy-current signals to monitor radial shaft vibration, axial position, and speed in industrial rotating machinery with limited target geometry. The unarmored design provides maximum routing flexibility through protective conduit systems, while the pre-installed connector protector prevents fluids, turbine oils, and moisture from compromising the connection junction.

Features

• Option 065 specifies a 6.5-meter (21.3 feet) overall cable length.
• Option 03 designates an unarmored coaxial construction that includes a factory-installed fluorosilicone connector protector on the female connector.
• Option 05 offers multiple international certifications for intrinsically safe and non-incendive installation.
• Gold-plated brass ClickLoc miniature coaxial connectors ensure reliable high-frequency signal transmission and mechanical locking.
• Minimum bend radius of 25.4 mm (1.0 inch) permits tight cable routing inside machinery casings and conduit networks.
• Compatible with 3300 XL NSv proximity probes and Proximitor sensors to form a calibrated transducer system.

Applications

• Aeroderivative gas turbines
• Centrifugal compressors and high-speed turbomachinery with limited target area or tight clearance
• Radial shaft vibration and axial position measurement in small-bore rotating machinery
• Enclosed industrial gearboxes and high-speed pumps

Ordering Information

Technical Specifications

Installation Guidelines

• Confirm that the combined length of the extension cable (6.5 m) and the matching probe equals the total calibrated length required by the Proximitor Sensor (typically 7.0 m system length).
• Ensure ClickLoc connectors are only finger-tightened during installation. The maximum allowable connection torque is 0.56 N m (5 in lb). Do not use metallic tools or pliers.
• Maintain a routing bend radius of no less than 25.4 mm (1.0 inch) to prevent damage to the inner coaxial conductor and shield.
• Verify that the fluorosilicone connector protector is correctly seated over the probe-to-cable junction to shield the contacts from external turbine oil and moisture.
• Install the extension cable in accordance with the appropriate regional hazardous area control drawings (Bently Nevada drawing 141092 for intrinsically safe or drawing 140979 for non-incendive layouts).

Compliance and Certifications

• North American (cNRTLus): Class I, Zone 0: AEx/Ex ia IIC T4/T5 Ga; Class I, Groups A, B, C, and D (intrinsically safe when installed with approved barriers); Class I, Zone 2: AEx/Ex nA/ec IIC T4/T5 Gc (non-incendive)
• ATEX/IECEx: Ex ia IIC T4/T5 Ga; Ex ia IIIC T90C/T105C Dc; Ex nA IIC T4/T5 Gc; Ex ec IIC T4/T5 Gc
• CE Mark: Complies with EMC Directive 2014/30/EU and RoHS Directive 2011/65/EU
• Functional Safety: SIL 2 certified