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SA 30i

SA 30i

SA 30i, the Leakage Current Analyser from SCOPE is a State of the Art, On-line test system for Residual Life Assessment of Metal Oxide Surge Arresters. The instrument measures and directly displays the values of Total Leakage Current and Third Harmonic Resistive Leakage Current. It provides system harmonic compensation as per IEC 60099-5-B2. It provides Corrected Resistive Leakage Current after applying correction factors for change in system voltage & temperature.

The SA 30i can be pre-loaded with the LA identity details (LA Identification, Type, Serial Number, Location, Rated Voltage etc.) and tests conducted on the same ID of the arresters are saved under the same folder. Trend analysis software, SAData picks up this data and stores them in a similar fashion on a PC. This analysis software enables the user to take a decision to repair/replace the arresters considering safety limits.

SA 30i is designed to work under the hostile electrostatic noise found in live EHV switch yards up to 765 kV



  • An innovative design makes SA 30i simple, lightweight, portable, feature-rich.
  • Measures Total Leakage Current, 3rd Harmonic Resistive Leakage Current with System Harmonic compensation and Corrected Resistive Leakage Current.
  • In built temperature measurement facility enables calculation of temperature corrected leakage currents.
  • Correction of results to rated voltage of LA to eliminate effect of change in system voltage.
  • Date and time stamp on test results
  • Results are displayed on large font, Big, back-lit LCD, printed on in-built thermal printer and can be stored in memory of the instrument.
  • SA 30i is powered by easily available re-chargeable Lithium-ion batteries. It works for a day’s testing needs on a single charge
  • The SA 30i is a switchyard compatible instrument. This makes the instrument extremely convenient to use.
  • Built-in standard calibration source and self-calibration check facility
  • USB communication port to transfer data to PC and Windows based PC Downloading & Analysis Software.
  • Facility of extending CT & Field Probe signal to external oscilloscope.
  • Facility for testing of GIS LAs available optionally


 Parameter  SA30i
 Total Leakage Current Range  100 μA to 10 mA
 Resistive Leakage Current Range 1 μA to 10 mA 
Resolution   1 μA
 Accuracy Value ± 5% ± 1 μA 
 Inputs External Clamp-on CT, Field Probe,Optional External PT input (110V AC)
 Display 4 line x 20 character large backlit LCD with large font
 Compensation Automatic for System Harmonics, Temperature & System Voltage
 Temperature Sensor

Inbuilt Platinum Resistance Thermometer

with measurement range of -20°C to 55°C

Self-calibration Check Available
PC Connectivity Through USB Port
Memory Storage capacity of 1000 results
Printer  58mm Inbuilt Thermal Printer

Internal Battery

SA30i - 11.1 V / 2200mAh Internal Rechargeable battery

Mains Supply  100-270V AC, 50 / 60Hz ± 10%, 1 Phase

SA30i - 415 x 330 x 200 mm


SA30i - 7 Kg


0°C to 55°C, up to 95% RH (non-condensing)

Type Testing

As per IEC 60068 / IS 9000 for Dry Heat, Damp Heat, Change of Temperature, Bump, Vibration and Mechanical Shock. For EMI / EMC & Safety as per relevant IEC Standards



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