CTP-1000C transformer comprehensive tester is a new generation of new type CT and PT testing instrument, which is based on the traditional transformer volt ampere characteristic ratio polarity comprehensive tester based on voltage regulator, voltage booster and current transformer, after widely listening to users' opinions, after a lot of market research and in-depth theoretical research. The device adopts high-performance DSP and FPGA, and advanced manufacturing technology to ensure stable and reliable product performance, complete function, high degree of automation, high test efficiency and is in the leading level in China. It is a professional test instrument for transformer in power industry.

Voltage transformer test

In the parameter interface, use the mouse to switch the cursor to the type column and select Pt as the transformer type.

Test wiring

The test wiring steps are as follows:

Step 1: according to the description of PT test items described in Table 2.4, conduct wiring according to figure 2.7 or figure 2.8.

Step 2: open circuit of other windings of the same PT.

Step 3: turn on the power and prepare for parameter setting.

Parameter setting

The test parameter setting interface of Pt is shown in Fig. 2.5.

Figure 2.5 PT parameter setting interface

The parameter setting steps are as follows:

Rotate the mouse to switch the cursor and select the test item to be carried out. When the cursor stays at a certain test item, the screen displays the parameter settings related to the test item; when the cursor leaves the test item, the screen displays the wiring diagram corresponding to the selected test item.

The parameters that can be set are as follows:

(1) No.: input the test number.

(2) Rated secondary voltage: rated voltage at secondary side of voltage transformer.

(3) Level: the level of the measured winding, with two options, such as P and metering.

(4) Current temperature: the winding temperature during the test. Generally, the temperature at that time can be input.

(5) Rated frequency: optional values are: 50 Hz or 60 Hz.

(6) Maximum test voltage: the maximum power frequency equivalent voltage output by the equipment during the test.

(7) Maximum test current: the maximum AC current output by the equipment during the test.

Step 4: select the start button on the right to test.

Test result

The test results page is shown in Figure 2.6.

Figure 2.6 Test result interface of P-Level PT

For different levels of PT and selected test items, the test results are also different, as shown in table 2.5.