Description

The ABB 3BHE023784R0001 is a high-availability redundant power supply module engineered for ABB’s AC 800M distributed control systems, delivering critical power redundancy for mission-critical automation applications. Designed to eliminate single points of failure, this module provides N+1 redundancy with automatic load sharing and seamless switchover during primary power loss. The 3BHE023784R0001 supports 24V DC output with robust overvoltage/overcurrent protection, ensuring uninterrupted operation of controllers and I/O modules in power plants, oil refineries, and safety systems. Its hot-swappable architecture allows module replacement during live operation, maximizing system uptime while integrated diagnostics monitor voltage stability, temperature, and load balance. With SIL 2 certification and compliance with industrial electromagnetic compatibility (EMC) standards, the ABB 3BHE023784R0001 maintains power integrity in harsh environments subject to voltage fluctuations, brownouts, or electrical noise.

ABB 3BHE023784R0001

Technical Specifications

Parameter Name	Parameter Value
Product Model	3BHE023784R0001
Manufacturer	ABB
Product Type	Redundant Power Supply Module
Input Voltage	100-240V AC (50/60 Hz) or 125V DC
Output Voltage	24V DC ±1%
Output Current	20A (shared load in redundant mode)
Redundancy	N+1 parallel operation
Efficiency	>90% (typical at full load)
Protections	Overvoltage (32V clamp), overcurrent, short-circuit, overtemperature
MTBF	>500,000 hours
Connection	Screw terminals with pluggable connectors
Operating Temperature	-25°C to +70°C
Cooling	Convection with temperature-controlled fan
Certifications	SIL 2 (IEC 61508), UL 508, CE, ATEX Zone 2
Dimensions	217 x 45 x 189 mm (HxWxD)

Main Features and Advantages

True Redundancy: The ABB 3BHE023784R0001 implements active load sharing with <1ms switchover during primary failure, preventing control system disruptions in critical processes like turbine shutdown sequences.

Advanced Diagnostics: Real-time monitoring of output voltage ripple (<100mV), load imbalance (>10% alarm), and component temperature enables predictive maintenance. Front-panel LEDs and Control Builder M software integration provide instant health status.

Universal Input: Wide input voltage range (85-264V AC/DC) accommodates unstable grid conditions common in remote installations. Power factor correction (>0.95) reduces harmonic distortion.

Safety Compliance: SIL 2 certification ensures suitability for safety instrumented systems. Reinforced isolation (3000V AC input-to-output) and double-insulated design meet hazardous area requirements.

Maintenance Optimization: Hot-swap capability allows module replacement without system shutdown. The module’s fan operates in eco-mode below 50°C, reducing dust ingestion and extending service life.

Application Field

The ABB 3BHE023784R0001 secures power continuity in critical infrastructure:

Power Generation: Backs turbine control cabinets and burner management systems, where power loss could cause forced outages or safety incidents

Oil & Gas: Powers offshore platform safety systems and subsea control modules, surviving voltage dips from large motor startups

Chemical Plants: Ensures uninterrupted reactor cooling and pressure relief controls during electrical transients

Pharmaceuticals: Maintains environmental monitoring systems in cleanrooms requiring 24/7 compliance

Water Treatment: Secures SCADA networks controlling floodgates and pumping stations during storms
The 3BHE023784R0001’s -25°C cold-start capability ensures reliability in arctic pipelines, while 70°C tolerance supports desert solar farms.

ABB 3BHE023784R0001

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