The LD-1203 is a three-phase non-intrusive load monitoring (NILM) recorder. Collection of load power data occurs at the breaker panel location. Housed in a NEMA 4X enclosure, this recorder is a three-phase version of the LD-1200 and is factory configured to operate in a 50 Hz or 60 Hz environment. Recorded data is uploaded via cellular communication for processing using Enetics' SPEED™ algorithms, which reconstruct the energy consumption interval data for each major appliance in the residence. The LD-1203 is configured for three phase commercial services.
The recorder samples up to three phases of residential or commercial power and computes individual watt and VAR values. The individual appliance or load turn-on and turn-off states are determined by identification of power transitions. The date and time of each on/off event along with the voltage and calculated real and reactive powers (watt, VAR) are recorded in non-volatile memory. The LD-1203 also computes and stores the whole-building watt-hour and VAR-hours for each recording interval.