CT Current Transformer Short-Time Thermal Current Automation Analyzer
Product Introduction
Current transformer short-time thermal current automation test device is a kind of equipment used to test the short-time thermal stability performance of current transformer. In power system operation, current transformers are very important measurement equipment, they are used to measure the size and direction of the current in order to protect the safe operation of equipment and systems.
Current transformers generate heat during long-term operation due to circuit load, ambient temperature and other factors, which can have an impact on their stability performance. In order to ensure the accuracy and reliability of current transformers, they need to be tested for thermal stability performance.
Current transformer short-time thermal current automatic test device can test the thermal stability performance of current transformer and automatically record the test data. It can simulate the operation of the current transformer under different loads, and through the experiment of thermal current, the short-time thermal stability performance of the current transformer can be tested.
Product Feature
1. The size and weight of the device is greatly reduced compared to the LCR charge/discharge mode test system, and the cost is also greatly reduced.
2. The device measures the primary circuit impedance of the sample and automatically controls the output current of the device to the target current based on the measurement results.
3. When the required test output capacity is greater than the maximum output of the device, the I2t equivalent test mode is automatically adopted, making the test feasible.
4. The test process is fully automatic, and the control circuit of the device monitors various signals and detects errors in operation to effectively protect the device itself.
5. The test process is simple and fast, and the values and time curves of various signals such as the sample primary circuit current, primary circuit voltage, and device regulator output voltage are recorded and saved during the test.
Diagram of CT Short-Time Thermal Current Tester Circuit
Control Box of CT Short-Time Thermal Current Tester
High Current Booster
The test control system of CT short-time thermal current tester is installed inside the control box of variable transformer. It controls the host in regulating rise and falls of variable transformer. opening and closing of AC contactor for output controlling of variable transformer, as well as recording and monitoring of primary current, primary voltage, variable transformer voltage, variable transformer current and system voltage waveform during testing.
All operations can be made through the touching display installed on control box of variable transformer; or the Ethernet port on control box of variable transformer can be used for remote computer connection to enter into Industrial Control System operating device in control box by remote login for testing.
Technical indicators
Maximum output current 0~10000A (larger output current can be customized), output current error is less than 10%% of the set value
Device output capacity 250KVA
Sample primary circuit current measurement 0~10000A, measurement error 0.1%FS
Sample primary circuit voltage measurement 0 ~ 30V, measurement error 0.1%FS
Test process voltage and current waveform sampling rate 25KHz, time measurement error 0.04ms
Power supply AC380V,45Hz~65Hz
Working environment temperature 0~50 degrees, humidity less than 90%
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