Siemens SD661 Severe Duty Motor for API661 Air Cooled Heat Exchangers
The Siemens SD661 motor is engineered for high-performance in severe-duty environments like petrochemical and energy sectors. Designed to exceed API661 requirements, this motor features full cast iron construction, premium insulation, and CSA certification for hazardous locations—making it a top-tier solution for air cooled heat exchanger applications.
Key Points
- Fully compliant with API661 standards for air cooled heat exchanger use.
- NEMA Premium® efficiency and IEEE841TM-2009 standard compliance.
- Supports VSD operation with 20:1 variable torque and 4:1 constant torque ratios.
- Offers oversized rotatable conduit box and multiple grounding options.
- Constructed with cast iron frame and IP56 ingress protection for extreme durability.
- Features Inpro/Seal® VBXX bearing isolators and regreasable roller bearings.
- CSA certified for Class I, Division 2 hazardous environments.
- Customizable via QuikMOD modifications for application-specific needs.