Bently Nevada 3300/14 3300 Series DC Power Supply Module

Configured for regulated DC power conversion in the Bently Nevada 3300 Series Monitoring System, the Bently Nevada 3300/14 (3300/14 DC Power Supply Module) provides direct electrical power distribution for monitor modules and associated transducer circuits. The module installs in Position 1 at the left-most side of the 3300 instrument rack and supports up to 12 monitor modules.

Hardware Specifications

Eddy-Current Transducer Power and Gap Voltage Validation

The 3300/14 supplies regulated DC operating power required by the monitoring rack and connected machinery measurement circuits. In Bently Nevada proximity measurement systems, stable supply conditions support consistent eddy-current probe scaling between the Proximitor signal conditioner and the associated probe system.

During commissioning, technicians can validate the complete measurement chain through gap voltage checks. A nominal -10 VDC target is commonly used as a reference point for many Bently Nevada eddy-current proximity measurement applications, although the required mechanical gap and voltage range depend on the installed probe system and machine configuration.

Stable rack power also supports monitor operation during rotor dynamics measurements. Therefore, field personnel should verify input voltage configuration and output selection before energizing the complete monitoring rack.

Frequently Asked Questions

Q: Can the Bently Nevada 3300/14 power more than 12 monitor modules?
A: The provided configuration data specifies support for up to 12 monitor modules and their associated transducer systems within one 3300 instrument rack.

Q: Does the 3300/14 support both -24 VDC and -18 VDC output operation?
A: Yes. The module can provide regulated -24 VDC or -18 VDC output according to its configured operating arrangement. The -18 VDC setting supports compatibility with applicable legacy system configurations.

Q: What happens if the DC input voltage falls outside the permitted operating range?
A: The module includes over-voltage and under-voltage protection circuitry. It automatically protects the power supply when the input condition moves outside the configured operating range.

Field Installation Guidelines

• Install the Bently Nevada 3300/14 only in Position 1 of the compatible 3300 instrument rack.
• Verify the configured DC input voltage range before connecting field power.
• Confirm DC polarity before energizing the module to prevent unnecessary fuse operation.
• Keep power wiring separated from high-energy switching conductors and motor power cables.
• Route transducer and low-level measurement wiring according to the applicable Bently Nevada rack installation requirements.
• Inspect rack grounding and shielding connections before commissioning the monitoring system.
• After installation, verify regulated output operation and perform applicable gap voltage validation on connected proximity measurement channels.
• De-energize the rack before removing or installing the power supply module unless the applicable system documentation specifically permits the procedure.