Bently Nevada 125840-02 Low-voltage AC power supply

1. Module overview

125840-02 is a Low Voltage AC power input module (PIM) in Bently Nevada 3500 series mechanical protection system, which belongs to the Legacy power solution of this system. This module needs to be used together with the supporting Legacy low-voltage AC power supply module to provide power support for the 3500 rack.

Key characteristics

Traditional system components: It belongs to the early power supply solution of Bently Nevada and is incompatible with the new Universal AC power supply system.

Dedicated voltage input: designed for a specific low-voltage AC input range (refer to the specific specifications, and the parameters of this model are not clearly listed in the document).

Safety protection: built-in overvoltage protection mechanism, abnormal voltage will trigger PIM fuse to open.

Modular architecture: the standard half-height module size (120.7mm×25.4mm×114.3mm) is adopted.

2. Technical parameters (inference)

Note: The original document did not directly list the parameters of 125840-02, and the following is inferred based on similar Legacy modules.

Possible specifications of parameter categories (refer to Legacy Low Voltage DC analogy)

The input voltage is expected to be in the range of 20-30Vac (official confirmation is required).

The fuse specification may use 01720045 5A/500V fast-melting fuse.

Installation position 3500 Half-height slot on the left side of rack

Environmental adaptive working temperature-30 C to+65 C.

3. Compatibility Description

corollary equipment

Must be matched with: Legacy Low Voltage AC Power Supply (traditional low voltage AC power supply module)

Incompatible devices:

New Universal AC Power Supply (106M1079-01)

Any DC power supply module (high voltage/low voltage)

System integration limitation

Cannot be mixed with Universal AC PIM(106M1081-01).

Use the same Legacy model in redundant configuration.

4. Typical application scenarios

Traditional system maintenance: used for spare parts replacement of deployed Legacy power supply system.

Specific voltage requirements: suitable for industrial sites with fixed low-voltage AC power supply

Legacy project support: provide support for equipment that has not been upgraded to Universal AC system.

5. Maintenance points

Fuse replacement: Legacy fuse is required (the document mentions that 01720045 may be applicable).

State monitoring: monitoring the state through the Supply OK LED of the associated power module.

Upgrade suggestion: consider migrating to the new Universal AC system to obtain a wider voltage adaptation range.