In-Line (CT) Cabinet Metering What is it? Current Transformer (CT) metering is used by utility companies to measure power consumption of large commercial / industrial service entrances. How does it work? The Main Service Module, which could be a Main Terminal Box, Main Circuit Breaker, Main Fusible Switch, or Bolted Pressure Switch, is buss-bar coupled with an In-Line CT Cabinet which houses current transformers. As power is consumed by the customer, it flows through these current transformers, inducing a voltage and current flow that spins a utility meter. The In-Line CT Cabinet also houses a fusible pullout or fusible switch disconnect at the bottom of the cabinet. From here, there are many different ways to wire to the load. What are the Eaton Part Numbers and Descriptions for the In-Line CT Cabinets? CTAP425NCM8CH – 400A, 240V, PULLOUT, 3PH, 4W CTAT425NCM8CH – 400A, 240V, FUSIBLE SWITCH, 3PH, 4W CTAT426NCM8CH – 600A, 240V, FUSIBLE SWITCH, 3PH, 4W CTAT427NCM8CH – 800A, 240V, FUSIBLE SWITCH, 3PH, 4W CTAP4244NCM8CH – 400A, 240V, 2 PULLOUTS, 3PH, 4W 965-9 – CT WIRING HARNESS 96 INCHES LONG, color coded for ComEd, Geneva, and Batavia. How about a one-line showing CT Cabinet section? Figure below shows a general one-line of the Current Transformer Section.
Is there a General line-up picture showing connectivity of Mains and CT Cabinets? The picture below showing how our Main and (2) CT Cabinets would be configured in the field.
Are these loaded in Vista? All (6) part numbers have been registered in Vista.