Bently Nevada 3500/15 Power Supply Module

Technical Specifications Overview

Functional Overview and Power Distribution

This module converts incoming plant power into stable DC voltage for the entire 3500 Series rack. It supplies clean +24 Vdc to all monitor modules, relay modules, and communication interfaces. The 3500/15 delivers up to 6.0 A continuous current for demanding system configurations. Moreover, the module supports both AC and DC input sources for global flexibility. You can select the appropriate input voltage via internal jumpers during installation. This versatility reduces the need for external step-down transformers or power converters.

Input Versatility and Global Compatibility

The Bently Nevada 3500/15 accommodates a wide range of industrial power standards. For AC applications, the module accepts 85–264 VAC at 47–63 Hz. For DC applications, the input range spans 18–150 VDC. Consequently, this single module fits installations worldwide without custom configuration. The module also features soft-start inrush current limiting. This design prevents excessive surge currents during power-up. Furthermore, the input section includes transient suppression for reliable operation in noisy environments.

Output Regulation and Protection Features

The module provides tightly regulated +24 Vdc output with ±5% tolerance. This regulation ensures all connected modules receive consistent power. The output current capacity of 6.0 A supports even the largest 3500 rack configurations. Additionally, the module includes comprehensive protection mechanisms. Overvoltage clamping at 28 Vdc prevents damage to downstream components. Overcurrent limiting at 7.5 A protects the module from short-circuit conditions. The front panel LEDs indicate power status and fault conditions clearly.

Energy Storage and Ride-Through Capability

The module incorporates substantial bulk capacitance of 680 µF on the output bus. This capacitance provides 30 ms hold-up time at full rated load. Therefore, the 3500/15 maintains output voltage during brief AC mains interruptions. This feature prevents system resets or data loss during power flickers. The energy storage also smooths voltage transients from load changes. Consequently, sensitive measurement modules receive clean, stable power at all times.

Physical Architecture and Installation

The module occupies a single slot within the 3500 chassis frame. Its compact dimensions of 25 mm x 241 mm x 200 mm (1.0″ x 9.5″ x 7.9″) allow high-density rack configurations. The weight of approximately 1.3 kg ensures secure mounting without additional support. The front panel features a 3-pin terminal block for field wiring connections. This terminal block accepts both solid and stranded copper conductors. The rear backplane connector distributes output power to all rack slots. The module also includes a dedicated ground terminal for safety.

Operational Environment and Compliance

The module operates in ambient temperatures from 0°C to +65°C. Storage temperatures range from -40°C to +85°C. The unit meets CE, UL, and RoHS standards for global industrial use. Install the module in a clean, well-ventilated control cabinet. We recommend checking the internal electrolytic capacitors every 24 months. This proactive maintenance ensures long-term reliability and performance.