Basic characteristics of transformer comprehensive character

In the work of power workers, the transformer comprehensive characteristic test bench is often needed. The test bench has a very wide range of applications, and the price is relatively low, which is very suitable for many power workers. What are the main functions of the transformer comprehensive characteristic test bench? This article will give you a brief introduction.

 

The transformer comprehensive characteristic test-bed is actually a combination of transformer no-load short circuit tester, transformer ratio group tester, inductive load DC resistance tester, electric voltage regulator, etc. It can measure the transformer no-load current, no-load loss, short-circuit loss, impedance and other parameters. It can also measure the transformer DC resistance, transformation ratio, transformation ratio error, wiring group and so on. If the test transformer is equipped outside, the AC withstand voltage test can also be carried out. At the same time, 18 parameters, such as three-phase voltage and current, are displayed; the digital meter replaces the pointer meter, and all test data are displayed on the screen in real time (locked), avoiding errors caused by parallax, conversion, calculation and many other factors in the test process. Make the test more accurate.

 

 

The zc-200 transformer comprehensive characteristic test bench developed by our company is applicable to power supply and distribution system, power transformer manufacturer, industrial and mining enterprises, etc. the transformer comprehensive test bench can truly judge the no-load current, no-load loss, impedance voltage and load loss of power transformer, accurately measure the DC resistance and transformation ratio of power transformer, and also can conduct frequency doubling induction on the tested transformer And power frequency withstand voltage test. The measurement part of the device is controlled by a high-grade single-chip microcomputer. The digital display, no-load, short-circuit and other test data are synchronously sampled by the single-chip microcomputer, which avoids the errors caused by the reading of voltage, ammeter and power meter respectively in the traditional test method and the manual calculation, implements the state diagnosis, ensures the safe operation, and provides reliable data for monitoring or building transformer.

 

Characteristics of zc-200 transformer comprehensive characteristics test bench:

 

1. No load, load, DC resistance and transformation ratio polarity test of transformer.

 

The transformer no-load, load, DC resistance and transformation ratio polarity test are completed by industrial computer.

 

The transformer integrated test bench controls and monitors the whole circuit;

 

The measured data can be processed automatically by microcomputer, and can be stored and printed as required.

 

2. Power frequency withstand voltage test

 

As this test belongs to safety regulation high voltage test, in order to ensure the safety of test equipment and personnel, this test was not completed by industrial computer;

 

Adopt electric control voltage regulating system. Automatic pressure rise and fall, digital display;

 

Zero protection, over-current protection, over-voltage protection;

 

High voltage leakage current display and protection.

 

3. Induced voltage withstand test

 

As this test belongs to safety regulation high voltage test, in order to ensure the safety of test equipment and personnel, this test was not completed by industrial computer;

 

150Hz intermediate frequency generator set is used to provide test power.

 

4. Transformer comprehensive test system consists of four parts

 

Transformer comprehensive test bench for monitoring data collection of each test unit and instrument;

 

Low voltage control cabinet;

 

Intermediate frequency generator set;

 

Power frequency withstand voltage test.

 

5. Transformer comprehensive characteristic test bench is composed of four parts

 

Industrial computer and data processing software system;

 

Data collection system of each test unit;

 

Strong current control and instrument monitoring system;

 

Man machine interface integrated system.

 

Therefore, it can be seen that zc-200 transformer comprehensive characteristic test-bed has a complete performance, which reduces a lot of unnecessary work and facilitates the work of power workers.