Circuit breakers monitor energy consumption
29 November 2008
Schneider Electric says it has made a ‘significant investment’ in the radical new design of its Compact NSX moulded-case circuit breaker. Its greatest innovation lies in how it measures, processes, and displays data, and, tor the first time, allows both energy consumption and power to be monitored. Schneider says it has made a ‘significant investment’ in the device and has applied for 23 patents.
NSX moulded-case circuit breaker
As for the circuit breaker itself, Schneider claims the roto-active contact breaking principle provides better current limitation and endurance performance, and this provides very high breaking capacity in a very small space with exceptional fault current limitation for extended system life.
Schneider says users can be sure of service continuity and minimised impact of short circuits with the improved discrimination properties of Compact NSX. Downstream circuit breaker trips, as close as possible to the fault, ensure that upstream circuit breakers are not overloaded.
Adding an optional SDTAM tripping module (early-break thermal fault signal) allows indication of motor overloads and actuation of a contactor.
The range of Micrologic electronic control units, typically used for selective and enhanced protection and measurement, now integrates next generation sensors such as an ‘iron’ sensor for the electronics power supplies and ‘air’ sensor for high bandwidth current measurement.
Electronic protection modules incorporate three LEDs to give an immediate and clear visual indication of operational status with instant fault identification. Information on the number of operations, level of wear on contacts and total load rates to facilitate effective maintenance planning is available via the functional display module.
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