Portable Precision Current Transformer Testing CT PT Analyzer

ct analyzer

GF1061 portable CT PT analyzer is mainly used for field or lab testing, it can finish the measurements (M) and protection (P) class CT, PT and TYP class CT. Adopt 7 inch touch TFT LCD, self-equipped mini type printer supporting field printing; supporting to use USB flash disk to download data or RS232 port to PC control. This model GF1061 CT PT Analyzer is the most complete and easy-to-use testing system for protection and metering CTs according to IEEE C57.13 and IEC60044 & IEC61869 standards. It can test current transformer phase error, ratio error, polarity, winding DC resistance, excitation curve, composite error and degauss etc, and also test voltage transformer phase error, ratio error, polarity, winding resistance, degauss etc. This test data can be download word test report by PC management software.



  • CT excitation curve;
  • With USB/RS232/WIFI port;
  • Data storage 10000groups;
  • 7 inch color touch TFT LCD;
  • Phase, ratio accuracy test;
  • Download word/PDF test report;
  • Full automatic demagnetization;
  • Portable IP65 structure design;
  • With battery function optional;
  • 10% error curve, 5% error curve;
  • Testing of various types of CT/PT;
  • Programmable control by PC computer;
  • Test CT all parameter in one minute;
  • Auto check knee point voltage value;
  • Easy to operate, test error quickly;
  • The best light CT analyzer-only 4.5KG;
  • In-built altitude and temperature sensor;
  • Knee point voltage from 0.1 V up to 80 kV;


  • Power plant;
  • ISO17025 lab;
  • Oil, Gas company;
  • Electrical laboratory;
  • Railway electric company;
  • Metrological service center;
  • Electric engineering service company;
  • Power engineering commissioning company;
  • Electricity power bureau & power company;
  • National Metrology and testing department;
  • Current transformer and voltage transformer factory;
  • Electrical Department of industrial and mining enterprises;

Main functions

I. Current Transformer (CT) II. Voltage Transformer (PT)
1. Magnetization curve 1. Excitation characteristic test
2. Transformation ratio test 2. Transformation ratio test
3. Polarity 3. Polarity 
4. 5% and 10% error curve 4.  Ratio error, phase error
5. Accuracy limiting factor (ALF) 5.  Degauss
6. Degauss 6.  Calculation of knee point value
7. Ratio error, phase error 7. Burden test
8. Automatic calculation of excitation knee point value 8. Resistance test(Winding DC resistance test)
9. Burden test
10. Resistance test(Winding DC resistance test) 
11. Secondary time constant (Ts)
12. Remanence coefficient (Kr)
13. Transient dimensioning factor (Ktd)
14. Peak instantaneous error (Er)
15. Magnetizing inductance (LU)
16. Instruments security factor(FS)
17. Composite error
18. Visible Flashing LED when terminals are Live
19. Audible Warning Sound Error Indicator
20. Ability to Store and Generate/Print Report of Tests
21. Built-in Thermal Printer


Electrical parameters
Accuracy 0.02% or 0.05%
Power supply 85 - 265V AC , 50/60Hz or Battery
Output voltage 0-100Vrms
Output current 0-5Arms (20A peak-value)
Output power 0-400 VA (1500 VApeak)
Automatic frequency variation range 0.1-60Hz
Equivalent excitation voltage ≤5000V/50KV
Accuracy ≤0.02% or 0.05%
Secondary winding DC resistance measurement Range 0.1-1000Ω
Accuracy ≤0.02% or 0.05%
Secondary actual load measurement Range 0.1VA-1000VA
Accuracy ≤0.02%±0.1VA
CT/PT phase error measurement Accuracy ±1min (typical) / 3 min (guaranteed)
Resolution 0.1min
CT ratio error measurement Range 1-50000
Accuracy ≤0.02% or 0.05%
PT ratio error measurement Range 1-30000
Accuracy ≤0.02% or 0.05%
Cable Length Primary 5m; Secondary 5m; others customized
Communication port USB, RS232, WIFI
PC control software Yes, Optional
Printer Yes, Thermal printer
Reference standards GB1207-2006, GB1208-2006, GB16847-1997
IEC60044-1, IEC60044-2,6, IEC61869, ANSI/IEEE C57.13
Safety standards GB 4793.1-2007
EMC EMC standard 89/336/EEC
FCC Subpart B of Part 15 Class A
IEC 1000-4-2/3/4/6
Mechanical parameters 
Overall dimension (L x W x H) (mm) 280 x 250 x 160
Weight (kg)   ≤4.5
Environmental conditions 
Relative humidity    Relative humidity 5%-95% not condensing
Operating temperature -10°C to +50°C
Storage temperature -20°C to +70°C
Altitude ≤2000m; If the altitude is greater than 2500m, the instrument needs to be customized

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