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Modbus Organization

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AREVA T&D

BiTRONICS M871


Type:  Monitoring Hardware
Description:  The BiTRONICS M871 Monitoring & Recording IED offers high-speed, high-accuracy power measurements for the electric utility substation. The M871 calculates True RMS Voltage, Current, and Watts every quarter cycle. Harmonics to the 63rd, K-Factor, Power, Frequency, sequence components, and many other measurements are updated every cycle. This calculation speed, coupled with a Modicon PLC on a Modbus or high-speed Modbus Plus LAN, enables control applications formerly unthinkable with measurement instruments. An optional 10/100 Mbps Ethernet port communicates with UCA2.0-Compliant protocols (OSI and TCP/IP simultaneously). The M871 is also a powerful recorder featuring waveform capture, accurate up to 100A ac symmetrical, with 128 samples per cycle resolution, two disturbance recording modes at rates of 1-3600 samples per cycle, sequence of event and trend recording. The combination of reliability and performance has made BiTRONICS brand meters the instrument of choice in substation applications.
Connectivity:  Modbus, Modbus TCP
Features:  Modbus RTU, Modbus TCP, Modbus Plus; Sub-cycle measurements; 5 simultaneous recording modes; simultaneous support of multiple protocols and physical links; up to 256Mb on-board non-volatile storage.
Specifications:  -40 to +70 C operating range, 6AC Voltage, 4AC current and 2DC input channels, 16 or 8 digital inputs, 4 of which can be relay outputs