Product Short Description
Product Introduction
The ABB RXTUG series is a family of high-reliability DC-DC converter modules designed to provide stable, isolated auxiliary power for industrial control systems, protection relays, and automation equipment. Available in multiple variants (including RXTUG 21H and RXTUG 22H), these modules convert wide-range DC input voltages into precisely regulated, galvanically isolated output voltages, ensuring clean power delivery to sensitive electronic components in harsh industrial environments[14]. As a direct successor to earlier designs, the RXTUG series integrates advanced protection, monitoring, and thermal management features, making it ideal for safety-critical and continuous-duty applications in power, oil & gas, chemical, and manufacturing sectors.
Description
Technical Specifications
Core Electrical Specifications
| Parameter | RXTUG 21H | RXTUG 22H |
|---|---|---|
| Input Voltage Range | 24–36 V DC; 48–60 V DC; 110–250 V DC | 24–250 V DC (universal input) |
| Output Voltage | Fixed ±12 V DC, ±18 V DC, or ±24 V DC (configurable) | Selectable ±12 V DC, ±18 V DC, ±24 V DC (factory default ±24 V DC) |
| Max Output Power | 15 W continuous | 15 W continuous; 20 W for 5 minutes |
| Regulation | ±10% of nominal output at full load | ±10% of nominal output at full load |
| Output Ripple | ≤0.2% peak-to-peak (full load) | ≤0.2% peak-to-peak (full load) |
| Efficiency | Up to 85% (typical) | Up to 85% (typical) |
| Isolation Voltage | 2.0 kV AC (1 minute) | 2.0 kV AC (1 minute) |
| Impulse Withstand | 5.0 kV (1.2/50 µs) | 5.0 kV (1.2/50 µs) |
Environmental & Physical Ratings
- Operating Temperature: -25°C to +55°C (RXTUG 21H); -20°C to +70°C (RXTUG 22H)
- Storage Temperature: -40°C to +85°C
- Humidity: 5%–95% RH, non-condensing
- Weight: ~0.5 kg (RXTUG 21H); ~0.6 kg (RXTUG 22H)
- Mounting: DIN-rail compatible; rear terminal block connections
- Certifications: CE, IEC 60255, IEC 61010, EN 50081-2 (EMC)
Protection & Monitoring Features
- Reverse Polarity Protection: Prevents damage from incorrect input wiring
- Overcurrent/Short-Circuit Protection: Automatically shuts down output on fault; auto-recovery after fault clearance
- Voltage Monitoring: Built-in auxiliary relay triggers at 80% of nominal output and resets at 10%
- Status Indication: Green LED for normal operation; fault indicators via relay output
- EMC Compliance: EN 61000-4-2 (ESD: 8 kV), EN 61000-4-4 (EFT: 2.5 kV), EN 61000-4-5 (Surge: 4 kV)
Key Features
Wide Input Voltage Compatibility
The RXTUG series supports universal DC input ranges (24–250 V DC), eliminating the need for multiple power supply variants and simplifying system integration across different industrial platforms. This flexibility makes it suitable for both low-voltage (24 V DC) and high-voltage (110–250 V DC) control systems, ensuring consistent performance in diverse installations.
Galvanic Isolation for Noise Immunity
Full galvanic isolation between input and output circuits suppresses ground loops and electrical transients, protecting sensitive control electronics from interference in noisy industrial environments[14]. This isolation is critical for applications in power substations, oil rigs, and manufacturing plants where electromagnetic interference (EMI) is prevalent.
High Reliability & Redundancy Support
- Redundant Power Supply: Modules can be connected in parallel (with external diodes) to provide redundant power, ensuring uninterrupted operation in safety-critical systems.
- Auto-Recovery: Short-circuited modules automatically restore power once the fault is resolved, minimizing downtime.
- Industrial-Grade Construction: Rugged design and wide temperature tolerance ensure long-term reliability in continuous-operation environments.
Integrated Monitoring & Diagnostics
- Relay Output Alarms: The built-in auxiliary relay signals output voltage loss or fault conditions to the control system, enabling proactive maintenance[14].
- LED Status Indication: A front-panel green LED provides visual confirmation of normal operation, simplifying on-site troubleshooting.
- Non-Intrusive Monitoring: Monitoring functions do not disrupt power delivery, ensuring system stability during fault detection.
Easy Installation & Maintenance
- Screw Terminal Connections: Tool-free wiring with clear terminal labeling simplifies installation and replacement.
- DIN-Rail Mounting: Compact form factor fits standard industrial control cabinets, saving space.
- Plug-and-Play Integration: No complex configuration is required; modules operate immediately after power connection.
Application Scenarios
Power & Energy Systems
- Substation Automation: Provides isolated power for protection relays, RTUs, and SCADA systems in high-voltage substations[14].
- Generator Control: Supplies stable power to excitation systems and governor controls in thermal and hydroelectric power plants.
- Grid Monitoring: Powers remote terminal units (RTUs) for power distribution network monitoring and fault detection.
Oil & Gas Industry
- Offshore Platforms: Delivers reliable power to control systems in harsh marine environments (salt spray, high humidity).
- Refineries & Pipelines: Supports safety interlock systems, valve controls, and process monitoring equipment in hazardous areas.
- Wellhead Automation: Powers remote monitoring and control modules for oil and gas extraction operations.
Chemical & Pharmaceutical Processing
- Process Control Systems: Supplies isolated power to PLCs and DCS modules in chemical reactors and mixing systems.
- Hazardous Area Equipment: Powers explosion-proof sensors and actuators in pharmaceutical manufacturing and chemical processing plants.
Industrial Manufacturing
- Automation Lines: Provides stable power for robot controllers, PLCs, and HMI systems in automotive and assembly plants.
- Material Handling: Powers conveyor systems, packaging machines, and sensor arrays in logistics and manufacturing facilities.
- Machine Tools: Delivers precision power to CNC controllers and servo drives in metalworking and machining operations.
Water & Wastewater Treatment
- Pump & Valve Control: Supplies power to SCADA systems and pump control modules in water treatment plants and distribution networks.
- Environmental Monitoring: Powers sensors for pH, flow, and level measurement in wastewater treatment facilities.
Mining & Metallurgy
- Underground Systems: Provides reliable power for ventilation, lighting, and conveyor controls in mining operations.
- Metallurgical Processing: Powers control systems for smelters, furnaces, and material handling equipment in steel and metal plants.
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