Product Introduction
The Bently Nevada 3500/15 series comprises power supply modules for the 3500 Series machinery protection system. The combination of 127610-01 and 125840-01 represents two independent power supply modules designed for redundant and input‑diverse configurations. Both modules are full‑height units that occupy the dedicated power supply slots (the leftmost two slots) in a 3500 rack. They convert incoming line power into regulated +24 VDC for the rack backplane and all installed monitor modules.
127610-01 – High‑voltage AC power supply (universal input, suitable for 110–220 VAC mains)
125840-01 – Low‑voltage DC power supply (nominal 24 VDC, for battery or DC‑bus backup)
When installed together, the system gains 1+1 redundancy (if both receive power) and input source diversity (AC + DC). If one supply fails or its input source is lost, the other continues to power the rack without interruption. Each module has independent overvoltage, overcurrent, and short‑circuit protection.
Parameters
| Parameter | 127610-01 (AC Supply) | 125840-01 (DC Supply) |
|---|---|---|
| Model / Part Number | 127610-01 | 125840-01 |
| Product Type | 3500/15 High‑Voltage AC Power Supply | 3500/15 Low‑Voltage DC Power Supply |
| Input Voltage Range | 85 to 264 VAC (nominal 110–220 VAC) | 18 to 36 VDC (nominal 24 VDC) |
| Input Frequency | 47 to 63 Hz | N/A |
| Output Voltage | +24 VDC (regulated) | +24 VDC (regulated) |
| Output Power | 350 W continuous | 350 W continuous |
| Efficiency | > 85% | > 85% |
| Redundancy | Hot‑swappable, parallel operation | Hot‑swappable, parallel operation |
| Protection Features | Overvoltage, overcurrent, short‑circuit, overtemperature | Same |
| Slot Width (each) | 1 full‑height slot in 3500 rack | 1 full‑height slot |
| Dimensions (each module) | 24.9 × 241.3 × 218.4 mm (0.98 × 9.50 × 8.60 in) | Same |
| Weight (each module) | 1.2 kg (2.65 lbs) | 1.2 kg (2.65 lbs) |
| Total Combined Weight | 2.4 kg (5.3 lbs) | |
| Operating Temperature | 0 to +65 °C (32 to +149 °F) | 0 to +65 °C (32 to +149 °F) |
| Storage Temperature | –40 to +85 °C (–40 to +185 °F) | –40 to +85 °C (–40 to +185 °F) |
| Humidity | 5% to 95% non‑condensing | 5% to 95% non‑condensing |
| Cooling | Convection (no internal fan) | Convection (no internal fan) |
| Certifications (typical) | CSA, ATEX, IECEx (safe area) | CSA, ATEX, IECEx (safe area) |
Application Scenarios
Redundant Power with Diverse Sources – Installed together in the same 3500 rack to provide 1+1 redundancy while also diversifying input power: the 127610-01 connects to plant AC mains, and the 125840-01 connects to a DC battery bank or uninterruptible power supply (UPS) DC bus. This ensures the 3500 system remains operational even during an AC failure or DC supply drop.
High‑Availability Machinery Protection – Used on critical turbines, compressors, and generators in refineries, chemical plants, and offshore platforms where a single power failure cannot be allowed to shut down protection monitoring.
Remote or Unstable Power Environments – Ideal for locations with unreliable AC mains (e.g., remote pumping stations, mines, or mobile drilling rigs) where a DC battery backup is already present. The DC supply rides through brownouts or short interruptions.
Retrofit for Redundancy – Upgrades existing 3500 racks that originally had a single power supply. Adding the complementary AC or DC module converts the system to redundant operation without changing the rack backplane.
Global Compatibility (AC Supply) – The 127610-01 accepts any AC voltage from 85 to 264 VAC, eliminating the need for voltage selector switches and simplifying deployment worldwide.
Global direct procurement guarantee
All products are purchased directly from overseas original manufacturers or authorized channels, 100% guaranteed genuine quality, sufficient spot inventory, and comprehensive model coverage
Quality Commitment
Each product has been tested by our technicians, providing 12-month long warranty, worry-free after-sales
Flexible procurement plan
- Bulk order enjoys Friendship discount (2 pieces or more can be applied)
- Long-term cooperative customers can apply for priority supply
Full service support
7×24 hours technical consultation, from selection guidance to installation and commissioning to provide full life cycle service (paid)
Why do so many customers choose us?
On the basis of the same quality, we provide:
- More competitive price system
- Faster logistics response
- More complete technical support (free product technical documentation)
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