Description

The ABB 3BSE042235R1 PP845 is a high-availability redundant power supply module engineered for ABB’s 800xA Extended Automation System, delivering SIL 3-certified (IEC 61508) power redundancy for critical safety and control systems. Designed as a hot-swappable dual-input unit, this module ensures continuous operation through automatic switchover (<2ms>PP845 features active current sharing with ±1% precision across parallel units and integrates advanced diagnostics for real-time health monitoring via Control Panel Builder software.

With a wide input range (85-264V AC/DC) and dual-output channels (24VDC ±0.5%), the ABB 3BSE042235R1 powers safety controllers like the PM861AK01 while maintaining galvanic isolation (1500V AC) between input/output and field circuits. Its convection-cooled design operates at -40°C to +70°C without derating, making it ideal for harsh environments like offshore platforms and arctic substations. The module includes configurable battery backup management with state-of-charge monitoring and automatic load shedding, ensuring safety system integrity during blackouts. Compliant with IEEE 841 and IEC 60068-2-6 vibration standards, the PP845 provides unmatched reliability for power generation, oil & gas, and pharmaceutical safety systems.

ABB 3BSE042235R1 PP845

Technical Specifications

Main Features and Advantages

Ultra-Fast Redundancy: The PP845 achieves seamless power transfer between sources in <2ms>

SIL 3 Safety Architecture: Hardware-based fault detection (open-wire sensing, output current balancing) and TÜV-certified diagnostics provide >99% coverage of dangerous failures, meeting nuclear safety standards.

Extreme Environment Operation: Fanless design with conformal-coated PCB withstands corrosive atmospheres (ISO 12944 C4), high humidity (95% non-condensing), and 5g vibration (10-150Hz). Cold-start capability at -40°C ensures Arctic reliability.

Intelligent Power Management: Integrated battery monitoring maintains 48-hour backup runtime with automatic cell balancing. MODBUS interface reports voltage/current/temperature trends for predictive maintenance.

Application Field

The ABB PP845 secures power for critical infrastructure:

Nuclear Plants: Powers reactor protection systems with IEEE 323 seismic qualification

Offshore Rigs: Provides ATEX-certified redundancy for emergency shutdown (ESD) panels

Pharmaceutical: Maintains GMP compliance with ripple-free power for batch recorders

Power Grids: Ensures uninterrupted operation of IEC 61850-based substation controllers

Chemical Processing: Delivers galvanically isolated power for SIL 3 burner management systems

Water Treatment: Backs up SCADA systems during grid instability with seamless generator transfer

ABB 3BSE042235R1 PP845

Related Products

PP846: Higher-capacity version (20A) for large cabinets

3BSE042235R2: Hardware revision with extended MODBUS functions

TA521: Termination assembly for PP845 integration

SD822: Diagnostic module for health monitoring

PM861AK01: SIL 3 controller powered by PP845

Battery Kit 3BSE016105R1: Optimized backup solution

CI867: Ethernet interface for remote PP845 management

Installation and Maintenance

Pre-installation preparation: Verify cabinet airflow (minimum 25mm clearance above module) and install ABB-recommended input fuses (6.3A slow-blow). Calibrate voltage sensors using Control Panel Builder before energizing. Ensure grounding resistance <0>

Maintenance recommendations: Perform quarterly output ripple measurements (<100mVpp>