Product Overview

The ABB 3BHE013940R0002, model UNS0868B-P,V2, is a high-precision power conversion module specifically engineered for the UNITROL series of excitation systems. This device serves as a foundational power layer within Distributed Control Systems (DCS), providing stable and regulated voltage to critical control circuits and excitation electronics. By utilizing advanced semiconductor switching technology, the UNS0868B-P,V2 maintains exceptional voltage regulation even under the volatile load conditions typical of large-scale generator excitation. Its architecture focuses on thermal resilience and electrical purity, ensuring that sensitive downstream processors are shielded from line disturbances.

Core Physical and Hardware Specifications

The module is designed for space-optimized cabinet installation, balancing a high power-to-weight ratio with industrial-grade durability.

• Order Catalog Number: 3BHE013940R0002

• Hardware Model: UNS0868B-P,V2

• Equipment Category: Power Supply Module

• Series Compatibility: UNITROL Excitation Systems

• Energy Efficiency Rating: 97%

• Thermal Operating Envelope: -20°C to +70°C

• Physical Profile: 8cm x 19.6cm x 6cm

• Unit Net Mass: 0.72kg

• Country of Manufacture: Sweden

• Safety Features: Integrated short-circuit, overvoltage, and thermal overload suppression

Strategic Industrial Implementations

The 3BHE013940R0002 is a critical asset in heavy-duty power electronics and automation sectors:

Synchronous Generator Excitation: Providing reliable auxiliary power for UNITROL regulators to manage the magnetic fields of large industrial alternators.

DCS Infrastructure Support: Serving as a localized power source for Ethernet routers and communication gateways within a distributed automation network.

Renewable Energy Plants: Maintaining control power for wind or hydro-generation excitation units where ambient temperature fluctuations require a wide thermal operating range.

Critical Process Manufacturing: Powering low-voltage control loops where a 97% efficiency rating is required to minimize heat buildup in enclosed, high-density control cabinets.