AUMA SAEx 30.1 Explosion-Proof Multi-Turn Actuator

Overview

AUMA SAEx 30.1 is the eighth SAEx size, covering 1,250–4,000 Nm (S2-15 min) on an F30 flange of EN ISO 5210. The handwheel has a diameter of 500 mm.

Seven Star LLC delivers the SAEx 30.1 to EPC contractors and plant owners in Oman and the GCC as trusted AUMA supplier. Lifting plans and valve-yoke checks are best agreed during the RFQ stage, which our Muscat team supports. Related links: Ex multi-turn range (SAEx), SAREx range and AUMA GST spur gearboxes.

Operating Principle of the AUMA SAEx 30.1

The SAEx 30.1 uses a 3-phase AC squirrel-cage motor and reduction gearing to drive the output; torque switching trips at up to 4,000 Nm and limit gears set the stroke. Self-locking holds the valve up to 90 rpm; the 125 and 180 rpm versions are not self-locking. AMExC or ACExC controls are required.

Engineering Design of the SAEx 30.1

With 195 to 265 kg to lift and a 500 mm handwheel to clear, the SAEx 30.1 requires a lifting plan, a clear platform and, usually, a stem extension study. Verify the F30 flange and the 115 mm stem bore against the valve before ordering. Torque capacity depends on speed, from 4,000 Nm up to 90 rpm to 2,800 Nm at 180 rpm, so confirm the final speed together with the required torque.

The terminal compartment is separate from the motor connection; actuator controls connect directly, IP67 is standard with IP68 as an option, and a 12.5 to 25 W heater is available.

Key Features of the AUMA SAEx 30.1

Data points that matter most when specifying the AUMA SAEx 30.1:

• Tripping torque of 1,250 to 4,000 Nm (S2-15 min) and up to 2,800 Nm at S2-30 min.
• Permitted run torque begins at 1,400 Nm and ends at 460 Nm for S2-15 min, depending on speed.
• Speed range 4–180 rpm (50 Hz) and a limit of 40 starts per hour.
• Approximate weight of 195 kg (4–22 rpm), 265 kg (32–180 rpm) and 500 mm handwheel.
• 2.2–30 kW motors at 400 V draw 11–65 A nominal current.

Selecting the AUMA SAEx 30.1 for Your Valve

The SAEx 30.1 offers 1,250 to 4,000 Nm of tripping torque on an F30 flange with a 115 mm stem capacity and a 500 mm handwheel. It is the choice for large gate valves, large isolation valves and valves with long stems, where the 25.1 would run out of torque margin. The maximum tripping torque drops to 3,200 Nm at 125 rpm and 2,800 Nm at 180 rpm, and run torque is stepped from 1,400 Nm to 460 Nm across the speed range. Weights of 195 kg and 265 kg mean that handling equipment is mandatory.

The SAEx 30.1 doubles the SAEx 25.1 range and reaches 4,000 Nm on F30 with a 115 mm stem and 500 mm handwheel. For 2,500 to 8,000 Nm, the SAEx 35.1 steps to F35 and a 155 mm stem, with a 30 starts per hour limit.

AUMA SAEx 30.1 Torque and Speed Data

The following limits apply to the AUMA SAEx 30.1 at rated voltage and an ambient temperature of +40 °C. Illustrative calculation, not AUMA data: a valve needing 75 turns per stroke takes 409 s at 11 rpm, 100 s at 45 rpm and 25 s at 180 rpm.

Worked Sizing Example for the SAEx 30.1 (Illustrative Calculation)

A tank-farm isolation valve is rated at 2,900 Nm seating torque and 800 Nm running torque. The SAEx 30.1 provides 4,000 Nm and a run torque of 900 Nm at 32 to 45 rpm, which satisfies the running demand, while 700 Nm at 63 to 90 rpm does not. The designer may therefore choose 45 rpm as the fastest acceptable speed. In this example the 4,000 Nm range leaves a comfortable reserve above the seating requirement. This is an illustrative calculation, not AUMA data.

Motor and Electrical Data of the AUMA SAEx 30.1

5 speed points from AUMA’s separate electrical data sheet (S2-15 min, 400 V / 50 Hz), 2.2 to 30 kW; approximate values that are not part of the technical datasheet attached here.

Explosion Protection and Installation Notes for the AUMA SAEx 30.1

Standard ATEX markings of the SAEx 30.1 per AUMA: II 2G Ex db eb IIB T4 or T3 Gb, II 2G Ex h IIB T4 or T3 Gb and II 2D Ex tb IIIC T130 °C or T190 °C Db. Certificate: TÜV 14 ATEX 7542 X. Confirm temperature class and zone on the nameplate.

Ambient temperature is rated from minus 30 °C to plus 40 °C or plus 60 °C as standard, with options down to minus 40 °C and minus 60 °C. The installation altitude is up to 2,000 m, above that on request.

Industrial Applications

The AUMA SAEx 30.1 is a large-valve actuator for pipeline and terminal service, for example crude-oil transfer valves, large tank-farm block valves and big process isolation valves in hazardous zones. With up to 4,000 Nm tripping torque, it extends the SAEx range well beyond typical plant-floor valves.

Operators of export terminals, pumping stations and storage facilities in Oman specify this frame where a long stroke and high seating torque are needed. Seven Star LLC arranges quotation, delivery and local support for the SAEx 30.1 together with matching ACExC or AMExC controls.

Technical Specifications

The table summarises the AUMA SAEx 30.1; AUMA’s official data sheet is the binding reference.

Neighbouring sizes and counterparts: AUMA SAEx 25.1 explosion-proof actuator and AUMA SA 30.1 multi-turn actuator.

Request a Quote for AUMA SAEx 30.1

Ask Seven Star LLC for an offer on the AUMA SAEx 30.1, listing valve make, torque and control preference. Download the AUMA datasheet from this page before sending the enquiry.