TKFH secondary pressure drop and load tester

According to the requirements of power quality standards, the excessively large integrated error of electric energy measurement is a key problem commonly found in electric energy measurement. The integrated error of electric energy measurement is caused by the combined error of the voltage transformer and the electric energy.

The composite error of the current transformer, the error of the watt-hour meter, and the measurement error caused by the voltage drop of the secondary conductor of the voltage transformer. Among these four errors, the measurement error caused by the voltage drop of the secondary conductor of the voltage transformer

The measurement error is often the largest. The electrical energy metering device verification regulations "SD109-83" and related technical specifications have provisions on the error caused by the voltage drop of the secondary circuit of the voltage transformer. TKFH secondary voltage

The drop and load tester integrates the test functions and test conditions of the secondary pressure drop and secondary load, and fully meets the test requirements.

   1. The secondary pressure drop and load tester can realize three-phase three-wire, three-phase four-wire, single-phase automatic measurement;

       2. The use of engineering plastic chassis is durable, and effectively guarantees the safety of testers and the system;

       3. The secondary pressure drop and load online tester has automatic range switching function to ensure test accuracy;

       4. The use of electronic principle circuit combined with DSP technology makes the test stable and strong anti-interference ability;

       5. After the measurement is completed, various parameters related to the load are automatically calculated, which is convenient for customers to analyze and test;

       6. The secondary pressure drop and load tester adopts a large-screen Chinese character LCD display, and all operations are prompted by the Chinese character menu; the data has the functions of power-off storage and browsing, and can transmit data online with the computer

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       7. It is powered by a large-capacity 7.2V11Ah lithium battery, which does not have any impact on the test circuit and avoids the protection of the system. At the same time, it is used when there is no power supply on site;

       8. The secondary voltage drop and load tester uses a clamp-type ammeter to sample the current without disconnecting the secondary circuit. Can realize on-line measurement without power failure. Automatic switching range: can be rooted in the measurement process

Switch to different positions according to the different value of the test object, so that the measurement accuracy and display digits are guaranteed;

       9. Working time can be as long as 24 hours (the longest);

      10. With a lightweight charger, easy to measure, in the case of insufficient battery power, you can connect an external charger to measure;

      11. The secondary pressure drop and load tester is small in size and light in weight;

      12. Very wide secondary working current/voltage range. Under the working current of 50mA, it can distinguish the resistance and reactance of 1mΩ, and can test the online of the S-class current transformer with the secondary rated current of 5A.

Actual load; under the working voltage of 5V, the conductance and susceptance of 0.001mS can be distinguished;

      13. The secondary pressure drop and load online tester can store 480 sets of measurement data, which can be maintained for ten years after power failure;

      14. The Chinese interface of the secondary pressure drop and load tester is displayed on a large screen with RS232 communication interface.