Uncompromised Safety
The most flexible power UPS system on the market
UPS for 100 % process reliability
In times of increasing relevance of decentral power supplies and decreasing reliability of the power supply networks, uninterruptable power supplies (UPS) become more and more important. R. STAHL, with its more than 80 years of experience in explosion protection, is able to transfer the requirements of a modern UPS system into systems, which are suitable for use in explosion-protected areas.
R. STAHL can supply various types of UPS systems. The design can be either a standard design or a design based on customer requirements. Depending on the demands of reliability and fault safety, the appropriate system can be engineered. Options for designs can be without redundancy, with partly redundant elements and 100 % redundant systems. Also the criteria to
use modular or monoblock design has influence on availability and fault safety.
Reliable and Flexible Power UPS Solutions for Hazardous Environments
R. STAHL's modular UPS systems are designed specifically for critical operations in challenging and hazardous environments. Our systems ensure maximum uptime, delivering consistent and reliable power to protect your equipment and minimize costly interruptions. Even during prolonged power outages, our technology guarantees seamless and controlled operation.
What sets our power UPS systems apart is their use of cutting-edge power electronics, such as IGBT or SCR chargers and IGBT inverters, which perform optimally even in extreme temperatures up to +60°C. The thoughtful selection of durable components with high safety margins supports efficient natural cooling. Additionally, our innovative coldplates and thermally optimized chargers are engineered to dissipate heat effectively, further boosting system reliability.
Key Advantages:
Innovative Multi-Enclosure Design: Our UPS systems feature a unique design that integrates multiple Ex d and Ex e enclosures, all connected via certified cable bushings and mounted on a single frame. This smart configuration allows for easy isolation of individual enclosures, clear function assignment, and extended component lifespan through effective thermal separation. Additionally, it simplifies maintenance and offers a more compact solution compared to traditional conduit connections.
Seamless Integration: The all-in-one design with plug-and-play functionality ensures straightforward installation and operation. With everything pre-configured and assembled at the factory, no on-site interconnection between different components is needed. This design provides quick and easy access to the Ex e connection chamber for both incoming and outgoing cables.
Unmatched Flexibility and Scalability: R. STAHL's UPS systems are among the most adaptable on the market. The modular design allows the system to scale to meet the demands of even the harshest offshore conditions, with capacities reaching up to 50 kW for DC and 30 kVA for AC applications.
X:
Y:
Power Electronics
Special Ex d enclosure, naturally cooled cold plate design
Internal Battery Breaker
Integrated AC or DC DB
HMI Touch Screen
Operating temperature up to 65°C Sunlight readable Operatable in gloves
Incoming Breaker
Connection Chamber
Various outputs: - 24, 48, 110 VDC 10kW - 230 V AC 30 kVA
Incoming Isolation Transformer
Bypass Transformer
Top 3 Benefits of Our UPS Solutions
Solutions for the most extreme environmental conditions
Available as non-redundant, partly and full redundant solutions
UPS for every application
At R. STAHL, we understand that every offshore operation has unique power needs. That’s why we offer UPS systems that are customizable to a range of design criteria, ensuring you get a solution that fits your exact requirements. Whether it’s the buffer time needed to switch to backup power, the voltage and power levels to support your operations, or the load capacity, we engineer systems that align with your specifications. Our designs also consider the Ex-rating for explosive environments, the ageing factor for long-term reliability, the design factor for operational excellence, the IP rating for ingress protection, and the optimal minimum and maximum temperature ranges for performance in harsh conditions.
R. STAHL’s solutions can be used worldwide in oil and gas industries with harsh offshore operations or onshore operations with extreme high or low ambient temperatures, in marine and pharmaceutical plants and even hydrogen plants. All special hand-picked components come with a high level of ingress protection and are suitable for all typical applications. The solutions of R. STAHL have already been successfully tested and installed in applications and projects around the world.
Design & material of construction
Our Ex d and Ex e enclosures, are designed to meet the toughest environmental demands and ensure optimal safety in hazardous areas. Built with precision and durability in mind, these enclosures offer exceptional performance under extreme conditions:
Stainless steel enclosures provide robust protection and longevity, ensuring your equipment remains secure in corrosive environments.
C5M-painted finish enhances resistance to harsh marine atmospheres, offering superior corrosion protection even in the most aggressive offshore or coastal settings.
Anodized cold plates optimize heat dissipation while offering enhanced corrosion resistance, improving overall system efficiency.
Type of protection (IP rating) IP65 and IP66 for UPS and IP54 for battery container (IP 56 also possible).
Engineered for reliability, these enclosures are the perfect solution for critical applications in offshore, marine, and industrial environments.
Power electronic components
Maximum safety and efficiency—our IGBT and SCR power electronics are designed to operate at high ambient temperatures, setting new standards in reliability. With natural cooling on cold plates, these components deliver optimal performance in uninterruptible power supplies (UPS), even in the most extreme conditions.
Key Benefits:
- Certified explosion protection: safe operation in hazardous environments including Zone 1 and 21.
- Natural cooling technology: passive cooling system without fans, utilizing cold plates and heat sinks for maintenance-free, long-lasting operation.
- Versitality in technology: selection of IGBT or SCR components depending on the consumers and output power to give high energy efficiency and maintain low disturbances in the system.
- Rugged and durable: built for continuous operation under extreme environmental conditions.
- PCBs are tropicalized to ensure smooth operation with high humidity. Increased protection provided with internal heaters.
Our advanced power electronics offer unmatched reliability and efficiency in critical areas. Protect your systems with cutting-edge technology.
Battery container & battery monitoring
Our Ex battery container is specially designed for use in hazardous environments, featuring hydrogen vents and a robust construction suitable for direct installation in Zone 1 areas. It includes a temperature sensor for temperature-guided charging, ensuring optimal performance and safety. The container also offers single cell monitoring, allowing for precise monitoring each individual battery cell and enhancing operational efficiency. Additionally, an optional canopy can be provided. The battery container has a plug-and-play design, combined with pre-wired battery breakers and a dedicated connection chamber, this ensures faster an installation and commissioning and a significantly reducing setup time. Maintenance is simplified with an easy-lift top door supported by pneumatic struts, providing convenient access to the batteries. The container allows for seamless battery cell replacement using compatible accessories, such as a battery handling trolley, making it a highly efficient and user-friendly solution.
Ex UPS guard
The Ex guard is designed to meet stringent IECEx standards for monitoring and protecting battery systems in hazardous areas. It provides comprehensive current and voltage monitoring in compliance with IEC 60079 requirements, ensuring safe and reliable operation. The system features controlled battery charging voltage, optimized over the battery’s lifetime, and incorporates built-in temperature sensors for real-time internal temperature monitoring of the battery. With temperature-compensated charging, the Ex guard ensures precise charging control, extending battery life, and maintaining performance even in challenging environments.
HMI
The 12 inch HMI in the Ex UPS is designed to excel in the harshest environments. The HMI are built for Zones 1 and 21 ensuring reliable performance in extreme conditions.
Key features:
Pre-installed visualization software.
Durable stainless-steel enclosure: available in SS304 or SS316L, suitable for wall mounting.
Robust capacitive touch screen, protected behind reflection-free glass.
Wide temperature range: operates efficiently from -40 °C to +65 °C.
Touchscreen operable with gloves: ensures ease of use in industrial settings.
Sunlight-readable display: provides clear visibility even in bright outdoor conditions.
Enhanced diagnostics & automation
The enhanced diagnostics and automation features of the UPS system are designed to provide users with a comprehensive, user-friendly interface for monitoring and controlling system operations.
This includes:
A clear system overview in a MIMIC diagram.
Built-in alarm manager and logger.
Graphical representation of system parameters.
Enhanced battery monitoring which calculates SOC, SOH, etc.
Display of relevant system parameters.
Activities and control of functions, e.g. boost charge or full battery discharge test.
Different user levels in our software, e.g. operator / admin to modify system parameters.
Interfaces: protocols (Modbus TCP / RTU / OPC-UA, IEC 61850, etc.) and additional hardwired interfaces with potential-free contacts.
Power Distribution
Our cutting-edge Ex d / Ex e distribution boards integrated in the Ex-UPS are designed for safe and efficient power management in hazardous environments.
Key features:
Condition monitoring with multiple signal types (Modbus TCP, OPC UA, analog and digital) for seamless integration with DCS systems.
Integrated EFM (Earth Fault Monitoring) or IMS (Insulation Monitoring System) for enhanced safety and system protection.
Light indicators to provide clear status signals.
Remote monitoring capabilities for real-time oversight and control.
A novel Ex d / Ex e design offering superior safety and operational reliability.
Advanced power management options, including load shedding for optimized energy efficiency.
This distribution boards are built to deliver reliability, safety, and performance in even the most demanding applications.
Integrated EFM or IMS
The system features integrated Earth Fault Monitoring (EFM) and Insulation Monitoring Systems (IMS) to ensure comprehensive safety and reliability. The EFM provides real-time detection of ground faults in ungrounded systems, enabling critical operations to continue while faults are identified and addressed. This early-detection capability helps prevent system downtime and ensures swift fault resolution.
The IMS continuously monitor the insulation resistance of IT systems, issuing alarms if resistance falls below critical levels. By measuring the insulation resistance between the IT system and the protective earth conductor (PE), these devices detect potential insulation deteriorations early, providing reliable warnings before issues escalate.
Together, both monitoring systems offer enhanced fault detection and management, maintaining system integrity and operational continuity.
Reliable, Maintenance-Free UPS for Critical Applications
Our maintenance-free UPS is designed for straightforward installation and can deliver up to 2 hours of backup power, depending on the load and battery capacity. This versatile UPS is well-suited for a range of critical applications, including aircraft warning lights, helideck and emergency lighting, as well as offshore and onshore pumps and valves. It is available in various configurations to meet diverse requirements, ensuring dependable performance in demanding environments. Being built on natural ventilation allows lowest human interface making overall maintenance very simple with minimum touch time.
