Description
Bently Nevada 3300/1078422-01 Power Supply Module
Configured for regulated DC distribution in the Bently Nevada 3300 rotating machinery protection system, the Bently Nevada 3300/1078422-01 (3300 Power Supply Module) provides direct electrical execution to supply power for up to twelve monitors and their associated transducers.
Hardware Specifications
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Parameter
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Specification
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Model Brand
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Bently Nevada
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Origin
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USA
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Weight
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1.2 kg
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Dimensions
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50.8 mm x 203.2 mm x 330.2 mm
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Operating Temp
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0 degC to +65 degC
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Power Consumption
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Supplies up to 12 monitor loads
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Primary Voltage
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Selectable 115 VAC or 220 VAC via retention connector
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Output Voltage
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Regulated DC for 3300 rack bus
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Positive Retention Connector Mechanics and Rack Bus Stability
The 3300/1078422-01 employs positive retention type connectors for primary AC voltage selection, ensuring mechanical lock-in under vibration. Rack bus regulation maintains steady DC levels despite simultaneous loading from multiple monitors and transducers. Internal filtering suppresses line-borne transients, preventing cross-module disturbance within the 3300 protection system.
Frequently Asked Questions
Q: Can the module be hot-swapped in an energized 3300 rack?
A: No. Rack power must be shut down before removal or installation to avoid arcing and bus instability.
Q: Is the AC input voltage auto-sensing?
A: No. Voltage selection is manual via the retention connector plug; incorrect setting may cause permanent damage.
Q: What is the recommended torque for securing the module to the rack?
A: Follow Bently Nevada mechanical guidelines for 3300 modules; do not exceed specified fastener torque to prevent frame distortion.
Field Installation Guidelines
Install the power supply module into the designated left-side slot of the 3300 rack. Confirm correct AC voltage selection before applying mains power. Use copper conductors sized to local electrical code for AC input wiring. Route AC power lines separately from signal cables to minimize EMI coupling. Ground the rack frame to the plant earth grid with low-impedance connections. Verify DC output voltage at the rack backplane before powering connected monitors.
