CS9939X industries is a accurate high voltage, insulation and grounding resistance tester of frequency conversion 8-way scanning matrix . the output AC voltage of 40.0 Hz ~ 400.0 Hz frequency rang, a resolution of 0.1 Hz.Output voltage uses hardware feedback  , high-speed MCU control technology, the output voltage regulated rate range is within 1%. Built-in 8-way scanning matrix, makes it particularly suitable for electronic transformer, wire and cable, power cord, connectors, circuit board of scanning test.


1, Using 240 * 64 drawing type LCD display, human interface design is easy to operation.

2, With  Chinese and English display interface, can meeting the different needs of different users.

3, Constant voltage output: the output voltage regulation within ±1%, avoid the unstable input power supply voltage and load change and make the output voltage change, the measured results is not accurate.

4, With quick discharge function, the tester can after dc test for 0.2 s  discharge the tested object and return circuit , ensure the safety of operating personnel.

5, Open circuit of dc test detection function, can prevent dc test with the test line loss caused by misjudgment.

6, Over zero start can prevent damage of tested parts.

7, Voltage gradient rise, according to time looking for breakdown point analysis.

8 Set up current high   and lower limit alarm function, prevent the loss caused by misjudgment by test.

9, Current offset function can eliminate influence by the leakage current to the result test .

10 In the process of test, canmanually change the size of the output voltage.

11, With functions of real current measurement.

12, With functions of arc detection test.

13, With functions of GFI protection.

14, Insulation resistance with functions of automatic shift, manual shift.

15, Insulation resistance with range  maintain function, can improve the work efficiency.

16,  Preset saving the test parameters : set up to 30 files, each file can  set up 99 test steps.

17, With the keyboard lock, protecting the test parameters by the operating personnel changes.

18, The front panel calibration software, without opening the parameter calibration can be achieved.

19, Equipped with the standard PLC interface, optional RS232C, RS485, USB, GPIB interface.


1, safe electricity protection wall and safety protection system, can protect the safety of operator, ensure the tested pieces are not damaged.

2, produced by DDS standard sine wave, linear power amplifier drive output, the output voltage waveform distortion degree, small pure, is better than 2%.

3, fast voltage set up time:

(1) the establishment of the ac output voltage for 126 ms, the settling time of the dc output voltage of 60 ms.

Steps (2) with the length of time between the minimum is 450 ms.

4, the output voltage is 40.0 Hz ~ 40.0 Hz frequency range, a resolution of 0.1 Hz;Can be used as high voltage variable frequency source;Industry is the only has a continuous adjustable frequency tester.

5, with functions of 0.4 ms quickly cut off.

6, ac withstand voltage test current minimum resolution of 0.1 uA, dc withstand voltage test current minimum resolution of 0.001 uA;Industry is the only has a low current resolution tester.

7, the output voltage with normal mode and gradient pattern;Normal mode is to point to set the multi-step output voltage test, the previous step after the test of time, the output voltage by the value of 0 in the output after the output voltage of next step.Gradient mode is set to test the output voltage, the previous step after the test time, output voltage does not drop to zero, but according to the next step of setting the output voltage of the voltage adjustment directly to the set.Is the industry only has two kinds of output voltage mode of tester.

8, the current measurement end can choose grounding mode or floating.End connected to the chassis grounding mode refers to the current measurements together, this model is mainly used in the test system.Floating mode refers to the current measurement end suspension, not connected to the chassis together, this model is applied to the occasion of high precision measurement.

9, the test results can be automatically stored in the instrument, making it easy for users to check the test results;Can also be connected to the RS232 interface of the test results into EXCEL spreadsheet data statistics and analysis.

10, voltage rise time can be set up, test time, voltage drop time and interval time.

11, PLC interface test signal can be output 24 v level, can also be output contact.

12, with functions of list, when the test step is greater than 2, after the test, the tester can automatically show every step of the test results.

13, Arc detection with current models and grade two.

1, Components, diodes, transistors, high-voltage silicon stack, all kinds of electronic transformers, connectors, PCB circuit board, high voltage capacitor

2, Household appliances, TV sets, refrigerators, air conditioners, washing machines, dehumidifiers, electric blanket, charger, etc

3, Insulation materials, heat shrinkable sleeve, capacitor film, high pressure casing, insulating paper, insulated shoes, insulating rubber gloves, etc

4, Instruments and meters: oscilloscope, signal generator, dc power supply, switching power supply, etc

5, Lighting, ballast, road lights, stage lights, lantern and other kinds of lamps and lanterns

6, Electric heating appliance: electric drill, ShouQiangZuan, cutting machine, grinding machine, grinding machine, welding machine, etc

7, Wire and cable, wire, cable, cable, silicone rubber cable, etc

8, Motor, rotary motor, etc

9, Office equipment, computer, counterfeit detector, printer, copier, etc


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