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GCTs & Iso-Phase Bus CTs

ABB's specially-designed indoor and outdoor class CTs and GCTs are recognized worldwide as a premium, highly reliable product for even the most demanding of applications. Since 1981, tens of thousands of units have been delivered to generator manufacturers, power generation utilities, and service companies worldwide - each meeting the special and often crucial requirements needed for generator protection and metering.

We are proud to offer a full range of indoor and indoor/outdoor class shielded and un-shielded board-mounted and resin cast CTs, specifically designed for generation metering and protection. These quality products are provided with inside diameters ranging up to 45", ratios up to 50000:5, and insulation ratings as high as 155°C for high temperature applications - all certified to national standards. To ensure quality and reliability, ABB provides type testing on each CT and GCT design and routine testing on 100% of the units manufactured in accordance with IEEE C57.13, IEC 60044-1, or other selected national standards, as specified by the customer.

Note: ABB GCT and CT designs noted on this page were previously marketed under the Kuhlman brand.

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