EC-7VAR Three Phase AC Voltage and Current Data Logger

  • Records voltage, current, power factor, power and energy
  • Three voltage input channels (L1, L2, & L3), 0-600V & Neutral(N) 0-300V
  • Voltage channels record VAvg, VMax & VMin on all 3 channels. Data stored in non-volatile memory
  • Three current channels (A1, A2 & A3) 400A or 3kA switch selectable
  • Three current channels record IAvg, IMax & IMin on all 3 channels. Data stored in non-volatile memory
  • Memory capacity of 32,000 (true RMS) values per channel (10bit), up to 300 days continuous recording
  • Kit includes logger, Rogowski transducers, voltage leads, USB lead, software & carry case

Call for configuration and price. 1-800-956-4437


The EC-7VAR Three Phase AC Voltage and Current Data Logger
for Voltage, Current & Power Factor Measurements

The EC-7VAR Three Phase AC Voltage and Current Data Logger is specifically designed to monitor one, two or three current channels, as well as one, two or three voltage channels. It allows you to monitor the loading and energy consumption of the installation. Power Factor recorded is the phase angle between L1 and A1. Amp ranges are selectable from 400 or 3000 AAC.

Why is the Electrocorder better than other similarly priced competitors? The Electrocorder range use a constant sampling technique, unlike the single reading of competitors. When the loggers start to record, they sample every channel 16 times per cycle, a cycle is 16ms at 60Hz and 20ms at 50Hz. At the end of each averaging period, 3 quantities are saved for each channel, the True RMS average, the Max, which is the highest cycle value during the period and the Min, lowest cycle value. This means that it will record all the peaks and troughs which are one cycle or longer.

The voltage and current levels are stored with dates and times. With the back-up battery, the Electrocorder can continue to record for months.

Read More About the EC-7VAR Three Phase AC Voltage and Current Data Logger:


EC-7VAR Specifications
Recorded valuesVavg, Vmax and Vmin on 3 channels and Iavg, Imax & I min on 3 channels
Voltage Measurement range (Vrms)0Vac to 600Vrms (Ph – Ph) or 0V to 300Vrms (Ph – N)
Measurement accuracy±1% of reading, ±1 Volt. (10 bit) within 100Vac-450Vrms (ph–ph); else ±3%. (50/60Hz ±2%)
Maximum channel input voltage600Vrms (Ph – Ph), 350Vrms (Ph – N) or 850Vpeak
Inputs (non-isolated inputs)Three phase inputs (L1, L2 & L3) & Neutral (N), Non-isolated input channels
Input socket types4mm shrouded ‘banana’ plugs & sockets, each with insulated crocodile clip
Vmax, Vmin, Imax & Imin time resolutionAlways one cycle (50/60 Hz), independent of selected averaging period
Current measurement range (Irms) 4A – 400A  and 20A – 3kA user selectable ranges
Supplied current sensor accuracyTypically +/-3% of reading
Current measurement accuracyTypically 3% of reading (within 10% – 90% of full scale), otherwise 3% of full scale
Current Input socket types (all channels)Hard-wired through cable glands
Sampling frequency (all channels)16 samples per cycle 800Hz @ 50Hz or 960Hz @ 60Hz
Data recordedAverage, max & min voltage & current values and Power Factor during the averaging period
Power Factor range and accuracy (measured on L1 and A1)Accurate to ~3% between lead 0.5 and 0.5 lag; ~6% between 0.5 and 0.3 lead or lag
Memory capacity & type384kB able to record 32,000 values per channel/phase . Non-volatile SEEPROM
Memory – averaging period & duration1 sec to 60 mins (1 sec gives 2 hrs logging, 60 min gives up to 300 days logging)
Real-time clock accuracyGreater than 0.001%
Current Sensor DimensionsLead Length 2m/6’6” , Sensor Length 450mm/18” (Open), Sensor Diameter 145mm/6” (Closed)
Input Voltage Lead LengthMetric 2 metres Imperial/English 6’ 6” (6 feet, 6 inches)
Battery life while loggingUnlimited when connected to voltage
Battery TypeUnit contains four 9V Alkaline batteries (E-Block, PP3, 1604A)
Communications Interface typeUSB, optically isolated to 5,2kV
Environmental (temp & sealing)-10C to +40C or +14°F to +104°F – OPTIONAL – IP65, NEMA 12/4
Dimensions & WeightMetric 260 x 180 x 190mm & 2kg Imperial/English – 10” x 7” x 8” & 4lb
StandardsRecording – EN50160: 1994 – CAT III


Electosoft Electrocorder Software GraphElectrosoft is supplied free with all Electrocorder loggers. It allows you to graph and export data files as well as plot energy costs and savings using voltage optimization techniques.

Overview of standard features and reports:Electrosoft Energy Graph

  • Sets-up loggers for recording
  • Plots voltage & current graphs
  • Plots energy & power graphs
  • Extrapolates CO2 usage
  • Database to track logger location
  • Alarms for late returns
  • Prints report quality graphs
  • Languages: En, Es, Fr, Hr, Cz, Fi, De, It, Po, Pt, Se
  • Database can be used across a network
  • Prints User Instructions
  • Plot multiple graphs on a single axes
  • View Voltage Optimization business case
  • Email data files
  • Voltage unbalance calculation
  • Draw Electrical Line Diagrams
  • Manage logger calibration dates
  • NEC 180 min/min calculations
  • Print previews & output to PDF, RTF, XLS, HTML etc