SB08 – Ring core Current Transformer The SB08 bushing type current transformers can be used for a variety of measuring, revenue metering (billing) and protection tasks. The current transformer SB08 is suitable to put around high-voltage bushings in encapsulated switchgear or in power transformers. The SB08 is meant to be mounted under transformer oil (up to 105°C) or in air, nitrogen or SF6-gas. Current transformers may be equipped with a "flux compensation winding". This additional feature prevents the measurement being influenced by external magnetic fields, caused by -for example- high currents in adjacent phases. The transformer can be ordered independently or as part of a subassembly. Please check our Subassembly Brochure for more information. Technical Specifications Application IEC61869-2, IEEE C57.13, CAN/CSA-C60044-1-07, AS 60044.1 and others on request 30…30.000A 1A, 5A and others on request As required. For example 2,5, 5, 10, 15, 30VA As required. For example 0,2S, 5P20, PX, TPY, C800 100xIpr, max 125kA 0,72/3/-kV As required. For example 50-60Hz, 16,7Hz Rated primary current (Ipr) Rated secondary current (Isr) Rated burden Accuracy class Ordering Specifications To order the SB08 we require several specifications. Below the mandatory and optional specifications are listed. In the table ‘technical specifications’ the possibilities per specification are shown. Mandatory • Application (oil, gas, air or nitrogen) • Requested Inner Diameter (..mm) • Current Ratio (..A/..A) • Standard • Accuracy Class • Rated Output (..VA) • Frequency (..Hz) Rated short-time thermal current Rated insulation level Rated frequency Secondary leads Minimum inner diameter Limitations for outer diameter Maximum height Maximum weight Optional • Limitations for Outer Diameter and Height (..mm) • Continuous Thermal Current (..%) • Short Time Thermal Current (..kA ..sec) • Other relevant requirements Wiring Diagram* * This is an example. Other diagrams (taps, additional windings) available as required. ** The dimensions will be based on the