top of page



KPM -SFRA+ ia a specialised equipment based on two methods to detect the deformation of the transformer at the same time. One is the sweep frequency response analysis method, the other is low-voltage short-circuit impedance method.


Using two methods can effectively reduce incorrect judgments. The tester can be used for IEC60076-18-2012 and IEC60076-5-2006. 


1. Using the advanced technical of DDS;

2. Using the high speed and advanced microprocessor to design;

3. Using AD chip of 16 bits;

4. With seven inch LCD touch screen of which the brightness can be adjusted;

5. With thermal printer of which the print thick can be adjusted;

6. It could store one hundred and twenty groups of FRA data, fifty groups of SCI data and thirty groups of SCI data, which could be read to current screen or upload to the PC;

7. With PC software using which we could upload data ,test, analyze data, print data, or create word document;

8. Using USB2.0 to connect to the device;


Technical Specification

Sweep frequency response:

1, Two different sweep modes: Linear sweep,Section sweep;

      Linear sweep:

     10HZ-1MHZ       interval 0.5KHZ     2000 dots

      100HZ-2MHZ       interval 0.5KHZ     2000 dots

     10HZ-1MHZ       interval 0.25KHZ    4000 dots(PC available)

      100KHZ-2MHZ       interval 0.25KHZ   4000 dots(PC available)

      Frequency,interval,and scan dots can be set(PC available)

      Section sweep:

      10HZ-100HZ          interval  1HZ       90 dots 

      100HZ-1KHZ          interval  5HZ       180 dots

      1KHZ -10KHZ          interval  50HZ     180 dots

      10KHZ-100KHZ        interval  0.2KHZ    450 dots

      100KHZ –300KHZ      interval  0.5KHZ    400 dots

      300KHZ – 1000KHZ     interval  1KHZ     700 dots

2, Test range:(-100dB) - (+20dB)

3, Test accuracy:(-80dB) - (+20dB)0.2dB  (-100dB) - (-80dB)1.0dB;

4, Frequency accuracy:< 0.01%;

5, Signal input impedance:> 1M Ω;

6, Signal output impedance:50 Ω;

7, In-phase test repetition rate:99.5%;

Short-circuit impedance and generator rotor AC impedance:

1,AC impedance 0~999.999Ω 0.2%±2 digits

2,AC voltage 0~600V 0.2%±2 digits

3,AC ampere 0~120A 0.2%±2 digits

4,Active power cosφ>0.1  0.5%±2 digits

                           cosφ<0.1  1.0%±2 digits

      Reactive power 0.2%±2 digits

5,Frequency    45~65HZ 0.1%


Voice Note
bottom of page