Transformer volt ampere characteristic transformation ratio polarity comprehensive tester

one、Overview:

Transformer volt ampere characteristic transformation ratio polarity comprehensive testerIt is designed specifically for testing the volt ampere characteristics, transformation ratio, and polarity discrimination of current transformers in relay protection. It can also be used for transformer polarity discrimination testing. It is a multifunctional testing instrument with high cost performance ratio.
This instrument adopts high-efficiency and low consumption materials and a special winding method booster. The microprocessor is used for data acquisition, analysis, and storage. The built-in micro printer can print test data and curves. When measuring CT transformation ratio, the transformation ratio can be automatically calculated. One person can complete all testing tasks. This machine is lightweight, portable, and easy to operate. Its performance is currently the highest among * * * instruments.
2、 Technical parameters
Input voltage: AC 220V or 380V, 50HZ, automatic recognition input voltage.
2. Working environment temperature: 0~40 ℃.
3. Input voltage: When input AC 220V, output 0-500V.
When the input AC voltage is 380V, the output ranges from 0 to 1000.
Current: * Large instantaneous current, 600A when measuring transformation ratio.
When input AC 220V, output 0-400A.
When the input AC voltage is 380V, the output is 0-600A.
The volt ampere characteristic test was conducted at 15A.
4. Digital voltmeter measurement range: 0-9999V; resolution: 0.1V.
When displaying current: 0-9.9A; resolution: 0.1mA.
5. Measurement range of digital ammeter: 0~3000A; resolution: 0.01A.
Error: 1 ≤ 1%, U≤1%。
When measuring CT transformation ratio, the transformation ratio can be automatically calculated, and the data and calculation results can be printed.
When measuring the volt ampere characteristics, store and print 20 sets of current voltage values and volt ampere characteristic curves.
9. Dimensions: Length x Width x Height=470 x 340 x 260mm3.
Weight: 23Kg.
Transformer volt ampere characteristic transformation ratio polarity comprehensive testerPrecautions
The secondary coil of the current transformer should not have a grounding point.
2. The regulator switch and output switch can be wired and disconnected in the direction of the disconnected position.
Before the experiment, this device should be reliably grounded.
After completing the experiment, it should be promptly reset to zero, and it is strictly prohibited to stay for a long time under high voltage and high current.
3、 Panel Diagram and Explanation (Figure 1)
1. Voltage acquisition input terminal, connected to the AC output remote end, connected to the CT secondary side.
2 AC current output, connected to the CT secondary side.
3 regulator output fuse (15A).
4. Voltage regulator output switch.
5 Boost control handle.
6 Four digit LCD screen current display (V) [CT secondary side current display for variable ratio testing].
7-digit LCD screen current display (A) [CT primary side current display for variable ratio testing].
8 printers.
9 Data reset button.
10 storage data button.
11 Print button.
12 Reset indicator light.
13 Storage indicator light.
Connect the CT secondary side to the 14 variable ratio current input.
Connect the primary side of CT to the 15 variable ratio current output.
16 volt ampere characteristic test and transformation ratio test conversion switch.
17 polarity discrimination input connected to CT secondary side.
18 polarity discrimination output connected to CT primary side.
19 polarity discrimination current display meter, zero position when not tested.
Press the 20 polarity discrimination on/off button once to turn it on, release it to turn it off.
21 grounding socket.
22 whole machine insurance (1A).
23 power sockets.
24 machine power switch.
25 external sensor interface, external primary current input terminal.