Overview
The Bently Nevada 3300/14, also cataloged as the 3300/14 DC Power Supply Module, provides regulated DC power distribution for monitor modules and transducers installed in the Bently Nevada 3300 System Monitoring Rack.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 3300/14 |
| Brand | Bently Nevada |
| Product Type | DC Power Supply Module |
| System Platform | 3300 System Monitoring Rack |
| Origin | USA |
| Weight | Approx. 2.0 kg (4.4 lbs) |
| Operating Temp | 0 deg C to +65 deg C |
| Storage Temp | -40 deg C to +85 deg C |
| Relative Humidity | Up to 95%, non-condensing |
| Rack Position | Slot 1, left-most rack position |
| Power Consumption | Input dependent; low-voltage DC option: 20 to 34 VDC at 5.5 A max; high-voltage DC option: 90 to 140 VDC at 1.5 A max |
| Transducer Output Voltage | Programmable -24 VDC or -18 VDC output |
| Monitor Capacity | Supports up to 12 rack monitors and associated transducers |
| Low Voltage DC Input | 20 to 34 VDC |
| High Voltage DC Input | 90 to 140 VDC |
| Fuse Rating | 8 A max for 20 to 34 VDC input; 2 A max for 90 to 140 VDC input |
| Voltage Protection | Automatic shutdown during over-voltage or under-voltage conditions |
| System OK Relay | SPDT hermetically sealed relay |
| Relay Contact Rating | 5 A at 28 VDC; 5 A at 120 VAC 50/60 Hz; 3 A at 220 VAC 50/60 Hz |
Rotor Dynamics and Eddy-Current Signal Power Management
The 3300/14 DC Power Supply Module supplies regulated power to Bently Nevada eddy-current proximity transducer systems connected through the 3300 rack. Therefore, it maintains the required transducer voltage levels for vibration, shaft position, and rotor dynamics monitoring circuits.
The module supports programmable transducer output levels for compatibility with standard -24 VDC proximity systems and legacy -18 VDC configurations. Additionally, the regulated output helps maintain gap voltage validation conditions, including typical -10 VDC target settings used during proximity probe calibration.
The power supply design includes protection against reverse polarity connections, input surges above rated limits, and abnormal voltage conditions. As a result, the module protects rack monitor electronics and connected machinery monitoring channels from unstable DC input conditions.
Frequently Asked Questions
Q: Can the Bently Nevada 3300/14 power supply support multiple monitor modules in one rack?
A: Yes. The module provides power capacity for up to 12 monitor modules and their associated transducers within a 3300 System Monitoring Rack.
Q: What transducer voltage outputs can the 3300/14 provide?
A: The module provides user-programmable transducer power output at -24 VDC or -18 VDC levels for compatible proximity transducer systems.
Q: Does the 3300/14 provide rack status indication?
A: Yes. The module includes a System OK relay located on the Power Input Module. The SPDT hermetically sealed relay remains energized during normal rack operation.
Field Installation Guidelines
Install the 3300/14 in Slot 1, the left-most position of the 3300 System Monitoring Rack. Verify that the selected DC input range matches the installed power supply version before energizing the rack.
Connect DC input wiring according to the rack power input requirements. Maintain correct polarity during installation because reverse polarity conditions activate protection functions.
Route power wiring separately from high-current switching circuits and high-noise signal cables. Use proper grounding methods for the rack enclosure and verify cable shielding connections according to site electrical standards.
Before operation, confirm the selected transducer voltage configuration matches the connected proximity probe system. Check the monitor channel status and System OK relay condition after power application.
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