Smart Rogowski Coil

Smart Rogowski Coil

Smart Rogowski Coil (SRC) is an AC current sensing intelligent instrument that can measure upto 3000A. Automatic current range selections <3A, 3- 30A, 30-300A & 300-3000A are available. SRC has in-built Bluetooth transceiver that enables it to communicate with any Smart Phones or Tablets via SANDS Android mobile application. SRC can display current RMS, waveform and harmonic distortion values. The data can be viewed, logged and stored in the mobile / tablet. Also, the data can be sent to the cloud for analytics or to compare behaviour of similar equipment at different locations.

Smart Rogowski Coil uses 150 mm diameter Rogowski coil to measure the AC current non-intrusively on any AC line. Rogowski coils are flexible current transformers that are ideal for use when space is limited. The flexible form factor means they can easily fit into tight panels and come in a range of sizes to suit most installations. The accuracy achieved is ±1%. It operates with a rechargeable 9V alkaline battery. SRC can be charged using any mobile charger giving 5V output.


  • Flexible current sensor that easily fits into any bus bars where space is the limitation
  • The in-built Bluetooth transceiver enables it to communicate with any smart phone
  • Automatic Gain selection for current 1-3A, 3-30A, 30-300A, 300-3000A. Optionally manual selection is also provided, for monitoring wide variations in the current.
  • Real Time viewing of current waveforms on a graphically enriched display
  • Possibility to zoom and observe the waveforms
  • Analyze harmonics and transients at site due to various loads.
  • A wireless interface gives the user an option to stay at a safe distance from the electrical systems like high voltage points.
  • The App based data logging tool makes the data instantly accessible on the cloud for analysis and archival.


Nominal Range 3A ;30A ;300A ;3000A
Measurement Range 3A: 1 to 3A
30A: 3 to 30A
300A: 30 to 300A
3000A: 300 to 3000A
Resolution +1%
Type of signal measured Sinusoidal
Instrument turn ON time 1 minute
Position of the conductor in the coil centred
Sensor Diameter 150mm
Sensor Length 510mm
Power supply 9V Hi-Watt Alkaline battery
Dimension 118mm x 78mm x 33mm
Transformation Ratio Voltage output (Analog & via Bluetooth)
Output Signal 3A: 1V/A
30A: 100mV/A
300A: 10mV/A
3000A: 1mV/A
Phase Shift <1deg
Load impedance >1Mohms
Battery life 120 hrs
Approximately 720 10-minute measurements
Output termination 0.5mm lead with two 4mm safety banana plugs
Unit current consumption Max.80mA
Battery indications Flashing Red LED
LED Indications Power ON : Red
Low Battery : Red
Bluetooth COM : Blue blinking