SADTEM SW44 AR 140871-10

SADTEM SW44 Medium-Voltage Current Transformer Description This is a SADTEM SW44, a high-quality cast-resin current transformer designed for indoor use in medium-voltage switchgear and control panels. It provides reliable and accurate current transformation for metering, instrumentation, and protective relaying applications. Manufactured in France, this transformer adheres to strict IEC standards, ensuring safety and performance. Specifications Manufacturer: SADTEM Type: SW44 Part Number: AR 140871-10 Primary Current (Ipn): 400A Secondary Current (Isn): 5A Ratio: 400/5A Burden: 30VA Protection Class: 10P5 Maximum System Voltage (Um): 7.2 kV Power-Frequency Withstand Voltage: 20 kV Lightning Impulse Withstand Voltage: 60 kV Frequency: 50 Hz Insulation Class: E Standard: IEC 60044-1 Label Info Serial Number: 481512 Year of Manufacture: 2012 Application Ideal for integration into new or existing medium-voltage (MV) electrical distribution systems, including metal-clad switchgear, motor control centers, and generator protection circuits. Its precision is vital for accurate energy billing and effective fault detection. Country of Origin Made in France. CO2 Impact Choosing this pre-owned transformer saves an estimated 59 kg of CO2 compared to manufacturing a new one. This saving is equivalent to the emissions from driving a car for 295 km. Availability This item is in stock and ready for immediate dispatch. Order now from profideals for expert support and fast delivery. FAQ Question?What is the significance of the 10P5 accuracy class?The ’10P5′ designation is a protection class according to IEC standards. ’10P’ means the composite error is less than 10 percent at the accuracy limit primary current. The ‘5’ indicates the accuracy limit factor (ALF), meaning the transformer maintains this accuracy up to 5 times the rated primary current. This is crucial for protective relays to operate correctly during fault conditions. Question?Can this 50Hz transformer be used on a 60Hz system?While it might function, it is not recommended. A transformer designed for 50Hz used on a 60Hz system may exhibit changes in performance, including higher core losses and potential saturation issues, affecting its accuracy. For critical measurement and protection applications, you should always use a transformer rated for the specific system frequency. Question?What are the routine maintenance requirements for a cast-resin transformer like this?Cast-resin transformers are virtually maintenance-free. However, periodic inspection is recommended. This includes checking for dust and contamination on the surface, which should be cleaned with a dry, lint-free cloth to prevent tracking. Also, verify that the primary and secondary connections are tight and show no signs of overheating or corrosion. profideals is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. Last Update: Friday, March 13, 2026