600A voltage sensing bushings

G&W’s Voltage Sensing Bushing (VSB) system is a temperature compensated, built-in, voltage measuring system that eliminates the need for PTs when three phase analog voltage monitoring is required. Compared to potential transformers, the VS bushing system offers these benefits: • Significant cost savings • Cleaner, less cumbersome installation • Less space required • Fewer add-on components which could potentially fail • Installed and tested prior to shipment • Can be field calibrated • One digital output per way for threshold voltage detection The VS bushing system utilizes a capacitively coupled screen which is embedded within the epoxy bushing. The low energy output of the screen is amplified by integral circuitry, resulting in a 0-120 VAC analog output suitable for direct connection to any relay, IED or RTU. The circuitry incorporates built-in calibration and temperature compensation which improve accuracy. Bushings are designed to IEEE 386 standards with standard interface accepting convention al elbow style connectors and include an aluminum conductor with 5/8"-11 aluminum threaded stud and aluminum single hole pad (elbows must be ordered separately). Bushings are bolt-on style. Copper studs are available. For bottom entry switches, recommended switch frame height is 42" for all voltages.