Description
Key Technical Specifications
| Parameter | Detail |
|---|---|
| Product Family | Bently Nevada 3500 Machinery Protection System |
| Module Type | 3500/15 Universal AC Power Supply |
| Front Panel P/N | 106M1079-01 |
| Associated PIM | 106M1081-01 (Power Input Module) |
| Input Voltage | 85–264 Vac rms (nominal 110–220 Vac) |
| Input Frequency | 47–63 Hz |
| Max Input Current | ~2.8 A rms (universal AC configuration) |
| DC Output | +8.5 V, +21 V, –31 V rails for rack modules |
| Max DC Output Power | ~180 W |
| Redundancy | Supports dual power supplies (lower = primary, upper = standby) |
| Hot Swap | Supported when a second power supply is installed |
| Mounting | Half-height module; installs in left-side rack slots |
| Operating Temp | –30 °C to +65 °C |
| Dimensions | 120.7 × 50.8 × 251.5 mm (H × W × D) |
| Weight | ~1.39 kg |
Product Introduction
The Bently Nevada 3500/15 with front panel P/N 106M1079-01 is the universal AC power supply for the 3500 Machinery Protection System. It does not perform vibration or displacement measurement itself; instead, it provides the internal DC power rails that allow 3500/40M, 3500/42M, 3500/25, 3500/32, 3500/22M, and other modules to operate.
The 106M1079-01 revision belongs to the newer universal AC power supply family. It accepts 85–264 Vac rms, so it can cover both 110 V and 220 V plant supplies without changing the power module. It must be paired with the correct Power Input Module, typically 106M1081-01, and is not compatible with legacy high-voltage or low-voltage AC PIMs.
In a 3500 rack, the power supply sits in the left-side half-height slots. If two supplies are installed, the lower unit acts as primary and the upper unit as standby. Either supply can power the full rack, and hot swapping is allowed when redundancy is present.
QA/QC Transparency SOP
- Intake & Origin Verification: Record front panel P/N 106M1079-01, rear PIM P/N, serial number, and rack slot history. Confirm it is a 3500/15 universal AC supply, not a legacy AC/DC variant.
- Visual Inspection: Check front-panel label, SUPPLY OK LED window, terminal block condition, backplane connector pins, and any signs of overheating or corrosion.
- Electrical Tests: Verify insulation resistance, input terminal integrity, and DC output rails (+8.5 V, +21 V, –31 V). Confirm no shorted outputs or open fuses.
- Live Rack Test: Install into a compatible 3500 rack. Apply 85–264 Vac. Confirm SUPPLY OK LED, stable DC rails, and proper power distribution to adjacent modules.
- Redundancy Check: If a second supply is available, verify primary/standby behavior and hot-swap operation. Back up rack configuration before removing any module.
- Final QC & Packaging: Label front P/N, PIM P/N, test results, and input voltage range. Pack in anti-static materials with a test summary.
Field Engineer Gotchas
- PIM mismatch: 106M1079-01 must be paired with the correct PIM, typically 106M1081-01. Legacy AC PIMs are not compatible.
- Not a monitoring module: Some listings confuse 3500/15 with 3500/40M or 3500/42M. This module supplies power; it does not process sensor signals.
- Redundancy slot order: When two supplies are used, the lower slot is primary and the upper slot is standby. Reversing expectations can cause confusion during troubleshooting.
- Hot-swap risk: Hot swapping is only safe when a second supply is installed and functioning. Removing the only active supply will de-energize the rack.
- Inherited rack settings: The power supply itself does not store channel configuration, but surplus racks may carry alarm setpoints, relay logic, and communication settings from another plant.
- Input voltage verification: Even though it is universal AC, always confirm the actual plant supply voltage, frequency, and terminal wiring before energizing.
Bently Nevada 3500/15 106M1079-01
Application Scenarios
- 3500 rack power replacement: Direct replacement for failed or aging 3500/15 universal AC supplies in turbine, compressor, and generator protection racks.
- Single-to-redundant upgrade: Adding a second 3500/15 supply to enable redundant power and hot-swap maintenance.
- Global voltage compatibility: Suitable for plants where 110 V and 220 V AC supplies exist, since the universal input covers 85–264 Vac.
- Surplus rack commissioning: Useful when rebuilding a used 3500 rack, provided the PIM, backplane, and module mix are verified.
FAQ
- What is 106M1079-01?
It is the front panel/main module P/N for the Bently Nevada 3500/15 universal AC power supply. - What input voltage does it accept?
85–264 Vac rms, 47–63 Hz, nominal 110–220 Vac. - Does it include the rear Power Input Module?
Not always. The associated PIM is typically 106M1081-01. Confirm both P/Ns before installation. - Can it run redundantly?
Yes. A 3500 rack can hold two power supplies. The lower slot is primary; the upper slot is standby. - Is it compatible with legacy 3500/15 AC modules?
The universal AC supply and its PIM are not compatible with legacy high-voltage or low-voltage AC PIMs. - Does it measure vibration?
No. It supplies power to the rack. Vibration, displacement, speed, and temperature measurements are handled by other 3500 modules. - Is this unit new or surplus?
Treat it as surplus/refurbished unless OEM documentation proves otherwise. Verify input rating, PIM compatibility, and rack test results before commissioning.
