Instrument Transfomer Inc. 6 SFT-501 Current Transformer Ratio 500:5A

Instrument Transformers Inc. 6 SFT-501 is a window-type current transformer designed for metering and protection applications in electrical power systems. It reduces high primary current to a lower, manageable secondary current for measurement instruments, protective relays, and monitoring systems. Technical Specifications: Manufacturer: Instrument Transformers Inc. (ITI) Model: 6 SFT-501 Type: Window-type current transformer Current ratio: 500:5 A Frequency: 50–400 Hz Rated voltage: 600 V (max system voltage) Insulation class: 10 kV BIL (Basic Insulation Level) Accuracy class: Cat. 6 (metering and protection accuracy up to specified burden) Burden rating: 5 VA typical (depends on configuration) Polarity: Marked H1 (primary), X1 (secondary) Core type: Ring core (toroidal) encapsulated in molded housing Secondary terminals: Screw-type terminal block Construction: Molded insulating resin case with window aperture for primary conductor Mounting: Panel or surface mount with base plate provisions Dielectric strength: 3 kV RMS (typical test value) Operating temperature: -20°C to +55°C Weight: Approx. 1.5–2.0 kg Applications: Metering, monitoring, relaying, and protective devices in switchgear, control panels, and power distribution systems Manufacture location: USA (Instrument Transformers Inc., North Carolina) Please review pictures carefully and let us know if you have any questions!