Current transformerBO7

instrument cast resin for outdoor service

600 Volt, 10 kV BIL Cast resin Outdoor with secondary conduit termination box Meet requirements of IEEE C57.13 For mounting over HV bushings Solution for adding current sensing to new and existing outdoor substations. APPLICATIONS • Add CT’s to outdoor power transformers, breakers, and cable termination devices • Replace existing substation CT’s • Install over high voltage bushings through 800 kV • Add metering points for “Smart Grid” control and communications • Increase degree of system protection • Increase CT accuracy • Change CT ratio • CT installation with minimal substation downtime FEATURES • Custom & standard designs available • Designs for metering and protection applications • Meet IEEE 57.13 and IEC 60044-1 standards • Standard 0.3% and high accuracy 0.15% ratings available for metering applications • Corrosion resistant mounting hardware kits • Corrosion resistant termination box • Aluminum nameplate • Optional ground shields available Construction The toroidal cores are made of cold-rolled, high-permeability, grain-oriented, silicon steel, annealed after forming under precisely controlled conditions. The grain of the core steel is oriented in the direction of the magnetic flux, thus minimizing the core losses and maximizing the accuracy. This encapsulation system demonstrates excellent weather resistance. The U.V.- stabilized insulation has adequate elasticity to compensate for dimensional changes of the core caused by temperature variations without cracking or crazing