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A sophisticated sealing system combined with excellent corrosion protection properties qualify actuators for underwater use.
Double sealed cable glands at the electrical connection safely prevent any ingress of water. Inner seals at all housing covers, sometimes coming in pairs, as well as a solid shaft made of stainless steel complete the universal concept.

Use of a specially developed frequency converter offers tremendous advantages. The most important features are variability in speed, resistance against voltage and frequency fluctuations, no current peaks during start-up as well as gentle operation of the valve by reducing speed in end positions. The robust design is extremely resilient against environmental influences (standard corrosivity class C5, IP67, double sealed – protection is also ensured during commissioning) and can be further enhanced as an option. 

With SAV .2 multi-turn actuators for open-close duty and SARV .2 for modulating duty paired with ACV .2 actuator controls, the proven AUMA SA/SAR range is enhanced by variable speed models. AUMA is spearheading market technology offering a wide speed control ratio of 1:10.
Actuators of the SAV type range for open-close duty and positioning duty are rated for class A and B or types of duty S2 - 15 min. A special version for longer running is available for the S2 - 30 min duty.
Actuators of the SARV type range are rated for class C or types of duty S4 - 25 %. Special versions for S4 - 50 % are also available.

Actuators of the SA type range for open-close duty and positioning duty are rated for class A and B or types of duty S2 - 15 min. A special version for longer running is available for the S2 - 30 min duty.

The modulating actuators of the SAR range are rated for class C or types of duty S4 - 25 %. Special versions for S4 - 50 % and S5 - 25 % are also available.

Actuators of type range SA/SAR can be combined with various controls from simple OPEN-CLOSE control to the micro-controlled version with logging of operating data or fieldbus interface 

The TIGRON is a multi-turn actuator with classic mission:
Automation of gate valves with or without rising stem as well as double block and bleed valves.
Virtually unlimited stroke
Rising stems are lead through the multi-turn actuator hollow shaft driving the stem thread. The stem protection tube protects the stem from pollution and people from injuries.
Open-close and modulating duty
TIGRON actuators versions are available for both types of duty.
Combinations with multi-turn gearboxes
In combination with GK or GST gearboxes, torques up to 16,000 Nm can be reached.

• Full power converter, water cooled
• 4 - 12 MW
• 3.3 kV, 4-quadrant, 3-level topology
• IGCT technology
• Compact and modular design
• High efficiency
• Suitable for tower base or nacelle installation

• Modular design for high availability and high efficiency
• Enhanced DTC for precise and fast generator control, grid code compliance and longer lifetime of drivetrain
• Very low total harmonic distortion
• Long-life components for high availability and low life-cycle costs
• Advanced diagnostics system enabling long-term planning of service and maintenance work
• Option: parallel-connected sub-converters for a higher overall efficiency and redundancy

• Available as full power converter or doublyfed converter
• 0.6 - 6 MW
• Air or liquid cooled
• DTC for fast and precise generator control