Metering

Basic Measurements (1 second update)

▪ 3-phase U, I, Neutral-Earth Voltage (Ung), and Power measurements

▪ Neutral Current (I4), Calculated Residual Current (Ir) and Frequency

▪ kWh, kvarh Import/Export/Net/Total, kVAh Total and kvarh Q1-Q4

▪ Interval Energy

▪ Voltage and Current Phase Angles

▪ Device Operating Time (Running Hours)

▪ DI Pulse Counters

▪ Optional AI measurement

High-Speed Measurements

▪ 3-phase U, I, Neutral Current (I4), Power and PF @ 1 cycle

Front Panel and Web Dispiay

▪ True RMS Real-time, Harmonics, Power and Energy Measurements

▪ Demands and Multi-Tariff TOU

▪ Max. & Min. Logs

▪ Sequence & Unbalance

▪ Real-time WF Capture of 3-phase U & I

▪ Event Waveforms and ITIC/SEMI F47 Curves

▪ Harmonics Histogram and Phasor Diagrams

▪ SOE Logs, PQ Logs & Counters and I/O Status

▪ Device Configuration and Diagnostics

Power Quality Features

▪ IEC 61000-4-30 Ed.3 Class S Compliance and EN50160 Report

▪ Waveform Recording (WFR & DWR) in COMTRADE format

▪ Fundamental U, I, I4, P, Q, S and Displacement PF

▪ U and I Unbalance, Sequence Components, Voltage and Freq. Deviation

▪ THD, TOHD, TEHD, Crest-Factor, K-Factor and TDD

▪ Individual Harmonics up to 63rd

▪ Dips, Swells, Interruptions Detection and Transients Capture

▪ Disturbance Direction Indicator

Demands

▪ Present and Predicted Demands for 3-phase U, I, P, Q, S, PF, as well as I4, Frequency, U and I Unbalance and THD

▪ Max. Demands with Timestamp for Ull, Uln & Current per phase and average as well as Power of This Month and Last Month (or Since Last Reset and Before Last Reset)

▪ Max./Min. values per Demand Interval

▪ Demand synchronization with DI

Ease of use

▪ Large, backlit, Color Dot-Matrix IPS display with wide viewing angle

▪ Password protected setup via Front Panel and on-board Web Server

▪ Easy installation with mounting slide bar, no tools required

Setpoints

▪ 16 Standard (1s) and 8 High-Speed (1 cycle) Setpoints

▪ Extensive monitoring sources including U, I, P, Q, S, PF, Current Demands, THD, Unbalance, Sequence Components, Phase Loss/Reversal, etc.

▪ Configurable thresholds and time delays

▪ 6 Logical Modules supporting AND/OR/NAND/NOR operations

▪ SOE, WFR, DWR, Data Recorder, DO and Email Alarm trigger

Multi-Tariff Tou

▪ Two independent sets of TOU Schedules

· Up to 12 Seasons

· 90 Holidays or Alternate Days

· 20 Daily Profiles, each with 12 Periods at min. 15-min interval

· 8 Tariffs, each providing kWh/kvarh Import/Export and kVAh

▪ Switching between two TOU schedules according to pre-programmed time and logged as an SOE event

Real-Time Clock

▪ Battery-backed Real-time clock with 6ppm accuracy (<0.5s per day)

▪ Time Sync. via Modbus RTU/TCP, SNTP, GPS and IRIG-B.

Data and Event Recorders

Non-Volatile Log Memory

▪ 1GB on-board memory

Real-Time Waveform Capture (WFC) and Waveform Recorder (WFR)

▪ Real-time WFC @128 samples/cycle x 4 cycles, Event Waveforms and ITIC/SEMI F47 Curves via Front Panel and Web Interface

▪ WFR with 128 entries

▪ Simultaneous capture of 3-phase Voltage and Current Inputs

▪ Programmable formats and pre-fault cycles from 256x20 to 16x320

▪ Support FIFO Recording Mode

▪ Scheduled WFR with max. repetition of 10000 times and programmable schedule from 1 to 960 hours

▪ COMTRADE file format, downloadable from the on-board Web/FTP Server

Disturbance Waveform Recording (DWR)

▪ 128 entries

▪ Simultaneous recording of 3-Phase Voltage and Current Inputs

· Initial Fault: 35 cycles @ 256 samples/cycle

· Extended Fault: Up to 150 cycles @ 16 samples/cycle

· Steady State: Up to 360 seconds of 1-cycle absolute peak values

· Post Fault: 15 cycles @ 256 samples/cycle

SOE Log

▪ 512 events time-stamped to ±1ms resolution

▪ Setup changes, Setpoint events and I/O operations

Max./Min. Recorder (MMR)

▪ Logging of Max./Min. values for measurements such as Voltage, Current, Frequency, P, Q, S, PF, Unbalance, K-Factor and THD with Timestamp for This Month and Last Month (or Since Last Reset and Before Last Reset)

Data Recorder (DR) Log

▪ 28 Standard DR Logs and 4 High-Speed DR Logs

▪ Recording Interval from 1s to 40 days for Standard DR Log and 1 to 60 cycles for High-Speed DR Log

▪ Up to 16 parameters for each DR Log with programmable sources including most Real-time measurements, Demands, Energy, Harmonics, Unbalance

▪ Configurable Depth and Recording Offset

▪ Support FIFO or Stop-When-Full Recording Mode

▪ BEC 2018 Compliant Data Recording for 3 years at 15-minute interval

Interval Energy Recorder (IER)

▪ Support recording of kWh/kvarh Import/Export and kVAh Total

▪ Programmable Recording Interval from 1min to 65535 mins

▪ Max. Recording Depth @ 65535 records

▪ Support FIFO or Stop-When-Full Recording Mode

PQ Log

▪ 512 entries time-stamped to ±1ms resolution

▪ Dips, Swells, Interruptions and Transients detection

PQ Event Counters

▪ Dips, Swells, Interruptions, Transients, and Total PQ Event Counters

Inputs and Outputs

Digital Inputs

▪ 6 channels, volts free dry contact, 24VDC internally wetted

▪ 1000Hz sampling for status monitoring with programmable debounce

▪ Pulse counting with programmable weight for each channel for collecting WAGES (Water, Air, Gas, Electricity, Steam) information

▪ Demand Synchronization

▪ Tariff switching based on DI status

Digital Outputs

▪ Up to 3 channels Form A Mechanical Relays for alarming and control

▪ 5A @250VAC/30VDC

Analog Input (Optional)

▪ 0/4-20mA DC input with programmable zero and full scales

▪ Can be used to measure external transducer signal such as Residual or Leakage Current