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The Bently Nevada 330877-080-36-00, also cataloged as the 3300 XL 50 mm Extension Cable, operates as a dedicated hardware component for high-frequency signal transmission between proximity sensors and driver modules within machinery protection systems. The physical interconnection maintains impedance matching to transmit eddy-current response changes without signal attenuation or phase distortion.

Suffix Breakdown & Model Matrix

Option Code Parameter Designation Configured Specification
080 Cable Length Option 8.0 metres (26.2 feet)
36 Armor and Cable Option FluidLoc extension cable
00 Agency Approval Option No Approvals

Hardware Specifications

Parameter Specification
Model 330877-080-36-00
Brand Bently Nevada
Origin Made in U.S.A
Weight 2 kg
Dimensions 8.0 metres (26.2 feet) overall length
Operating Temp -51 deg C to +200 deg C (-31 deg F to +392 deg F)
Power Consumption Passive physical media
Cable Capacitance 69.9 pF/m (21.3 pF/ft) typical
Cable Construction 75 Ohm triaxial, perfluoroalkoxyethylene (PFA) insulated FluidLoc cable

Eddy-Current Probe Scaling and Gap Voltage Validation

The 3300 XL 50 mm extension cable provides precise matched impedance characteristics necessary for factory eddy-current probe scaling accuracy. Proper installation verification requires performing gap voltage validation across the driver output terminals, ensuring a baseline around -10 VDC targets at nominal mechanical mid-span. Constant capacitive stability across the cable length prevents calibration drift during severe rotor dynamics changes, while the triaxial shielding structure provides cross-talk suppression against adjacent signal lines in congested terminal housings.

Frequently Asked Questions

Q: Does cutting or splicing the 8.0-metre extension cable affect system performance?

A: Yes. Any alteration to the physical length changes total loop capacitance from the nominal 69.9 pF/m rating, causing severe linear scale factor error and invalidating probe calibration.

Q: What insulation material is used in the FluidLoc cable configuration?

A: The cable utilizes perfluoroalkoxyethylene (PFA) insulation, rated for thermal stability over an operating range of -11 deg C to +200 deg C.

Field Installation Guidelines

When routing the triaxial cable through machine housings, avoid sharp bends that exceed the minimum bend radius of the outer jacket. Ensure all thread-coupling connections are hand-tightened and locked with designated lock-nuts to prevent moisture ingress. Terminate outer shielding explicitly according to single-point grounding rules to eliminate potential earth loops and RF noise induction.

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