CET Electric Technology
2
12 Monthly Energy Logs of kWh/kvarh Import/Export/Total/Net, kVAh, kvarh Q1-Q4
Interval Energy for kWh/kvarh Imp/Exp and kVAh
Demands, Predicted Demands and Peak Demands for kW/kvar/kVA Total and per phase Current
with Timestamp for This Month (or Since Last Reset) and Last Month (or Before Last Reset)
Two TOU schedules, each providing
o
12 Seasons
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20 Daily Profiles, each with 12 Periods in 15-minute interval
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90 Holidays or Alternate Days
o
8 Tariffs, each providing the following information
·
3-Phase Total and Per-phase kWh/kvarh Import/Export, kVAh
·
kW/kvar/kVA Max. Demands
Setpoints
9 user programmable Setpoints with extensive list of monitoring parameters including Voltage,
Current, Power, THD, etc.
Configurable thresholds, time delays, DO and Alarm Email triggers
SOE Log
100 events time-stamped to ±1ms resolution
Setup changes, Setpoint and DI status changes and DO triggers
Max/Min Log
Max/Min Log with Timestamp for real-time measurements such as Voltage, Current, In, I4, Ir,
Frequency, kW, kvar, kVA, PF, Unbalance, K-Factor, Crest Factor and THD
Configurable for This Month/Last Month or Since/Before Last Reset
Freeze Logs
60 Daily Freeze Logs for kWh/kvarh/kVAh Total and kW/kvar/kVA Peak Demands
36 Monthly Freeze Logs for kWh/kvarh/kVAh Total and kW/kvar/kVA Peak Demands with
Timestamps.
Data Recorder Log
5 Data Recorders of 16 parameters each for Real-time Measurements, Harmonics, Energy, Demand,
TOU, Pulse Counters, etc.
Recording interval from 1 minute to 40 days
Configurable capacity up to a max. of 1250 days at 15-minute interval for 1 Data Recorder with 6
parameters
Diagnostics
Frequency Out-of-Range, Loss of Voltage / Current
kW Direction per phase and Total, Possible incorrect CT Polarity
Incorrect U & I Phase Sequence
Disconnection of Residual Current Input
Inputs and Outputs
Digital Inputs
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4 channels, volts free dry contact, 24VDC internally wetted
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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
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Tariff switching based on DI status
Digital Outputs (Optional)
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2 Form A mechanical relays for alarming and general purpose control
Pulse Outputs (Optional)
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2 Form A Solid State Relays for kWh and kvarh pulsing
Optional Analog Inputs Module
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I4 Input for Neutral Current measurement
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Ir Input for Residual Current measurement (CT not included)
o
0/4-20mA DC input with programmable zero and full scales
