CET Electric Technology
8
Demand
Demands, Predicted Demands and Maximum Demands for kW/kvar/kVA total and per phase
Current with Timestamp for This Month & Last Month (or Since Last Reset & Before Last Reset)
Setpoints
9 user programmable setpoints with extensive list of monitoring parameters including Voltage,
Current, Power and THD … etc.
Configurable thresholds, time delays and DO triggers
Comprehensive monitoring and control based on the condition of the measured parameters and
provides trigger output for different actions such as SOE Logging or DO Triggering for Alarm or
Control Actions.
SOE Log
100 events time-stamped to ±1ms resolution
Recording Events for Setup changes, Setpoint and DI status changes as well as DO operations
Max./Min. Log
Max./Min. Log with timestamp for real-time measurements such as Voltage, Current, In
(calculated), Frequency, kW, kvar, kVA, PF, Unbalance, K-Factor, Crest-Factor and THD
Configurable for This Month & Last Month (or Since Last Reset & Before Last Reset)
Diagnostics
Frequency Out-of-Range, Loss of Voltage / Current
kW Direction per Phase and Total, Possible Incorrect CT Polarity
Incorrect U & I Phase Sequence
Optional Inputs and Outputs
Digital Inputs
o 4 channels, volt free dry contact, 24VDC internally wetted
o 1000Hz sampling for status monitoring with programmable debounce
o Pulse counting with programmable weight for each channel for collecting WAGES (Water,
Air, Gas, Electricity, Steam) information.
Digital Outputs
o 2 Form A mechanical relays for alarming and general purpose control
o 5A @ 250VAC or 30VDC
Communications
Optically isolated RS-485 port at max. 38,400 bps
Standard Modbus RTU
Real-time Clock
Equipped with a battery-backed Real-Time Clock with 25ppm accuracy (<2s per day)
System Integration
Supported by CET’s PecStar® iEMS
Easy integration into 3
rd
-party Energy Management, Automation, SCADA or BMS systems via
Modbus RTU
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