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SA 30i+

SA 30i+

SA 30i+, the wireless 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 upto 765 kV



  • Safe Online measurement due to wireless CT and Field Probe
  • In built temperature measurement facility enables calculation of temperature corrected leakage currents.
  • Correction of results to rated voltage of LA to eliminate eff ect 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+, CT unit and Field Probe unit are 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 for testing of GIS LAs available optionally


 Parameter  SA30i+
 Total Leakage Current Range  1 μA to 20 mA
 Resistive Leakage Current Range 1 μA to 20 mA 
Resolution   1 μA
 Accuracy Value ± 5% ± 1 μA 
 Inputs Wireless Clamp on CT and Wireless Field Probe optional external field PT Input (Voltage Peak method as per IEC 60099-5-A1 for GIS)
 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 USB Port (Standard), RS 232 & Ethernet (Optional)
Memory Storage capacity of 2000 results
Printer  58mm Inbuilt Thermal Printer

Battery as well as Mains powered Main Unit

Battery powered CT and FP Units

Internal Battery

SA30i+ - 11.1 V / 2200mAh Internal Rechargeable battery,

CT Unit - 11.1 V / 1150mAh Rechargeable battery,

Field Probe Unit - 11.1 V / 1150mAh Rechargeable battery. 

8 hours Battery life with full charge

Mains Supply  88 to 264 VAC, 47 to 63 Hz, Single Phase
Battery Charger Inbuilt in Main Unit, Connection to CT and Field Probe Provided


SA30i+ - 340 x 295 x 155 mm,

CT Unit - 340 x 73 x 40 mm,

Field Probe Unit - 340 x 82 mm Cylindrical 



SA30i+ - 3.8 Kg,

CT Unit - 0.7 Kg ,

Field Probe Unit - 0.75 Kg 


-20°C to 55°C, up to 95% RH (non-condensing), Storage Temp - 0-70°C

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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