ABB SAFT138CHS Power Supply Module High-Performance DC Source

The ABB SAFT138CHS is a power supply module developed for ABB’s Symphony Plus, Advant, and Freelance automation platforms. It provides a dependable and stable 24V DC regulated output, powering controllers, I/O modules, and communication interfaces in critical industrial environments.

This module is specifically engineered for demanding process applications that require uninterrupted power, such as power generation, oil and gas, metallurgy, and chemical processing. Featuring enhanced protection circuits, superior voltage stability, and compact construction, the SAFT138CHS ensures smooth and secure operation even under electrical stress or fluctuating loads.

Technical Specifications

Practical Applications

• Power Plants: Provides regulated DC power to turbine and excitation control systems.

• Oil & Gas Facilities: Maintains stable voltage for compressors and field automation devices.

• Chemical Processing Plants: Powers distributed I/O and PLCs in hazardous zones.

• Water & Wastewater Systems: Ensures reliable operation of control stations and RTUs.

• Marine & Offshore Installations: Designed for vibration-tolerant, moisture-resistant conditions.

• Metallurgical Industries: Feeds automation systems under high temperature and electrical load fluctuations.

• Renewable Energy Systems: Supplies reliable power to solar and wind turbine control networks.

Advantages of the SAFT138CHS

• High Electrical Stability: Provides exceptionally clean DC power with minimal ripple.

• Extended Input Range: Accepts wide AC voltage input for global installations.

• Robust Protection: Comprehensive safety circuits safeguard connected modules.

• Silent Operation: Natural convection cooling ensures noise-free, low-maintenance performance.

• Compact Design: Saves cabinet space without compromising performance.

• Energy Efficiency: High conversion efficiency reduces energy waste and thermal stress.

• Easy Integration: Plug-and-play compatibility with ABB control systems.

• Reliable Construction: Built with industrial-grade materials for long-term endurance.

• Quick Diagnostics: LED indicators enable rapid fault identification.

• Compliance and Safety: Fully certified for EMC, electrical, and environmental standards.

FAQs

1. Q: What voltage does the SAFT138CHS output?

   A: It delivers a regulated 24 VDC ±2% output for ABB control modules.

2. Q: Can the SAFT138CHS operate under fluctuating input voltage?

   A: Yes, it supports 100–240 VAC input with automatic voltage regulation.

3. Q: What is the rated output power?

   A: The module provides a continuous 120W output.

4. Q: Does it feature built-in surge protection?

   A: Yes, surge and overvoltage protection are standard features.

5. Q: What type of cooling system is used?

   A: It relies on passive natural convection for heat dissipation.

6. Q: Is it compatible with redundant power configurations?

   A: Yes, it can operate in parallel for redundancy or load sharing.

7. Q: What are its typical environmental conditions?

   A: Operational from 0°C to +55°C, up to 95% humidity.

8. Q: What tools are used for configuration and monitoring?

   A: It integrates with ABB’s Control Builder and Symphony Plus Engineering Suite.

9. Q: What are the physical dimensions of the module?

   A: 125 × 50 × 145 mm (4.92 × 1.97 × 5.71 in).

10. Q: How much does the module weigh?

    A: Approximately 0.70 kg (1.54 lb).