Product Core Brief
- Model: 127610-01
- Brand: Bently Nevada
- Series: 3500 Machinery Protection System
- Core Function: Converts 100-240 VAC input to regulated +24 VDC for 3500 rack backplane power.
- Product Type: AC Power Supply Module
- Key Specs: 100-240 VAC Input | +24 VDC Output | Half-Height Module
- Condition: New Surplus / Original OEM
BENTLY 3500/15 127610-01
Key Technical Specifications
- Manufacturer: Bently Nevada
- Part Number: 127610-01
- Product Category: AC Power Supply Module
- System Architecture: Bently Nevada 3500 Rack
- Input Voltage: 100-240 VAC, 50/60 Hz
- Output Voltage: +24 VDC
- Output Current: ~5A Max (190-250W Total)
- Module Size: Half-Height
- Redundancy: Supports Dual PSU (Main/Backup)
- Operating Temp Range: -30°C to +65°C
- Compliance: API 670 / CE / CSA / UL
Product Introduction (No Fluff)
This 127610-01 serves as the primary or redundant AC power source for Bently Nevada 3500 racks, converting facility AC into clean, regulated +24 VDC for all internal monitor and relay modules. It ensures continuous operation of machinery protection systems even during facility power fluctuations.
Sourcing this exact OEM replacement part prevents total rack shutdowns when power supplies fail or degrade. Keeping verified new surplus stock on hand drastically reduces unplanned downtime during critical power failures or when upgrading to redundant power configurations.
QA & Testing SOP (Dynamic & Transparent)
Power supplies are the heart of the rack and demand rigorous validation. Every 127610-01 undergoes an inbound anti-counterfeit inspection, verifying PCB silkscreen, transformer markings, and Bently Nevada factory labels. Next, the module is mounted on a dedicated 3500 test rack to validate backplane communication and output regulation. We perform a full load-bank test to verify +24 VDC stability under maximum current draw and check ripple voltage to ensure clean power for sensitive analog monitors. Finally, a 4-hour continuous burn-in catches marginal capacitors or switching transistors before they reach your panel. All units ship in anti-static shielding with a printed QA test report.
BENTLY 3500/15 127610-01
Installation Pitfalls & Guide (Engineer to Engineer)
❗ Redundancy Slot Assignment: In a dual-power configuration, the lower slot is the primary power source, and the upper slot is the backup. Installing them in reverse will cause the rack to run on the backup supply, defeating the redundancy logic. Always verify slot position before insertion.
❗ Hot-Swap Capability: This module supports hot-swapping. You can remove or insert a 127610-01 while the rack is powered, provided a second power supply is active and healthy. Removing the only power supply will cause an immediate rack shutdown. Always verify the redundant PSU is online before pulling the primary.
❗ Input Voltage Selection: While this module auto-senses 100-240 VAC, verify your facility voltage matches the jumper settings (if applicable on older revisions) or the label rating. Applying 240 VAC to a 115 VAC-only jumpered unit can cause catastrophic failure.
Replacement Protocol:
- Pre-Install: Verify the redundant PSU is online and healthy. Ground yourself properly.
- Removal: Release the front panel retaining screws. Extract the failed module straight out. Inspect the backplane connector for bent pins.
- Install: Align the 127610-01 with the guides. Seat it firmly and secure the faceplate screws. Connect the AC input cable.
- Power-on Test: Verify the “OK” LED illuminates. Check the 3500 Configuration Software for power supply status and voltage readings. Confirm no rack faults are active.
Technical FAQ
Is this an exact drop-in replacement for my older 127610-01?
Yes, the 127610-01 maintains complete backward compatibility with existing 3500 racks. It supports the same 100-240 VAC input and +24 VDC output. You can swap it directly into an older slot without reconfiguring the entire rack, though you should verify the redundancy slot assignment.
Why is this listed as “New Surplus” instead of factory-new?
This is genuine Bently Nevada stock that was never deployed in a power plant or refinery. It has been stored in climate-controlled inventory rather than exposed to harsh industrial environments. You receive the exact same MTBF and lifespan as a factory-fresh unit, typically at a significantly lower cost and without the 16-week lead time.
Can I hot-swap this power supply while the 3500 rack is live?
Yes, but only if a second power supply is active. The 3500/15 supports hot-swapping in redundant configurations. If this is your only power supply, you must schedule a shutdown. Removing the sole PSU will cause an immediate rack power loss.
What is the warranty coverage on this part?
We provide a standard 12-month functional warranty. If the module fails under normal operating conditions within that window, we replace it. Our QA testing proves the module delivered stable +24 VDC under load before it left our bench, so we stand behind our inventory.
My 3500 rack is losing power intermittently. Is this PSU bad?
Not necessarily. Before replacing the 127610-01, check the AC input voltage for sags or transients. Verify the backplane connectors are tight. Intermittent power loss can also be caused by a failing monitor module drawing excessive current. Only replace the PSU if load-bank testing confirms it cannot maintain regulation under nominal load.
