Bently Nevada 330930-040-00-00 3300 XL Standard Extension Cable
The Bently Nevada 330930-040-00-00, also cataloged as the 330930 extension cable, operates as a dedicated interconnect element for eddy‑current proximity measurement loops within 3300 XL systems. The cable preserves controlled coaxial impedance and stable gap‑voltage transmission between probe and proximitor.
Suffix Breakdown & Model Matrix
330930 = 3300 XL standard extension cable
040 = Cable length 4.0 m (13.1 ft)
00 = Without stainless‑steel over‑armor
00 = No agency approvals
Hardware Specifications
Parameter
Specification
Model
330930-040-00-00
Brand
Bently Nevada
Origin
U.S.A
Weight
Shipping weight 2 kg
Dimensions
Cable length 4.0 m
Operating Temp
Not specified (use standard 3300 XL cable limits)
Power Consumption
Passive coaxial link
Connector Type
Standard NSv/XL coaxial connectors
Cable Type
Non‑armored coaxial
Product Type
Extension cables
Eddy‑Current Signal Transmission and Cross‑Talk Suppression
The extension cable maintains calibrated impedance required for 3300 XL eddy‑current measurement chains. When paired with matched probes and proximitor modules, the cable supports stable −10 VDC gap‑voltage behavior and linear displacement scaling. The non‑armored construction reduces mass while preserving shielding continuity, minimizing cross‑talk in multi‑channel installations.
Frequently Asked Questions
Q: Can the cable be hot‑swapped while the proximitor remains energized? A: No. Disconnecting or installing the cable under excitation may cause transient gap‑voltage disturbances.
Q: Does altering cable length affect calibration? A: Yes. Probe, extension cable, and proximitor lengths are factory‑matched. Any deviation changes impedance and displacement scaling.
Q: Is shielding required to be bonded at both ends? A: No. Bond shielding at the proximitor end only to avoid ground‑loop formation.
Field Installation Guidelines
Route the coaxial cable with gentle bend radii to maintain impedance stability. Avoid parallel runs with high‑current conductors or variable‑frequency drive outputs to reduce electromagnetic interference. Apply strain relief at both termination points to prevent vibration‑induced connector motion. Ensure connectors are fully seated to maintain signal integrity.
