Single-unit switch/transducer monitors high AC loads
Martin Rowe - July 13, 2012NK Technologies offers the ATS current-sensing switch/transducer, a unit that combines a limit alarm with an analog-output signal transducer in a single package to monitor produced or consumed AC current.
NK Technologies offers the ATS current-sensing switch/transducer, a unit that combines a limit alarm (current switch) with an analog-output signal transducer to monitor produced or consumed AC current up to 1200 A. The output is magnetically isolated from the input to maximize safety, and a rotary switch is used to set the trip point.
DIN-rail mounting eases installation of the unit and provides a secure mount that is resistant to conductor movement. A SPDT relay, adjustable from 10 A to 1200 A in 10-A increments, changes state with power to the sensor. LED indication is provided if power is removed from the sensor or the primary current exceeds the adjustable trip point. Time delay is field-adjustable from 0.5 s to 12 s. The ACS produces a 4-20-mA analog-output signal that is proportional to a 0 to 1200-A input and is available at all times to detect increases and decreases in current. NK Technologies.