Current Transformer Secondary Circuit Load Tester

Online Testing Instrument for Second Loop MeasurementThe smooth operation of the system is crucial for the accuracy of electrical energy measurement, which primarily includes current transformers, secondary circuits of voltage transformers, energy meters, and load monitoring units. Affected by different operating environments, potential fault risks may arise in the secondary circuits after a period of operation. If not detected and addressed promptly, these issues could lead to accidents. There are various types of faults that may occur in the secondary circuits, such as poor grounding,分流, contact damage, and transformer turn-to-turn insulation breakdown. These faults typically manifest as changes in circuit admittance (or impedance). Therefore, testing the circuit admittance is an efficient and convenient method for fault analysis, enabling the avoidance of blind troubleshooting, difficulties in power shutdown maintenance, or the inability to detect faults post-shutdown.

Excessive comprehensive error in electrical energy measurement is another critical issue commonly found in electrical energy measurement. The comprehensive error in electrical energy measurement consists of measurement errors caused by the composite error of voltage transformers, the composite error of current transformers, errors in the electricity meters, and the voltage drop of the secondary winding of the voltage transformer. Among these, the secondary load has a significant impact on the transformer error.

In the "On-Site Inspection Guideline for Electric Energy Measuring Devices," specific requirements for the actual load measurement of the secondary circuit of transformers have been clearly outlined. In reality, the actual secondary load of transformers significantly affects their accuracy.

The majority of secondary load test methods on the market currently employ the voltmeter-ammeter phase method, which has drawbacks such as complicated wiring, the need for power interruption during measurement, and indirect readings.

In response to the aforementioned issues, our company's R&D team has leveraged cutting-edge technological advancements, integratingDSP platform technology has developed and produced high

An in-line admittance tester with a performance-to-price ratio and technological level reaching international advanced standards.

The.Two Chapters  Key Features

This instrument features the following:Sorry, there is no Chinese content provided to translate. Please provide the text you would like translated.There isThe functionality.

Molded plastic enclosures for machine boxes, ensuring safety for test personnel and the system.

2. Measurement data automatically switches ranges based on the size of the error.

The combination of electronic principle circuitry with DSP technology ensures excellent test stability and strong anti-interference capability.

4. Equipped with a large-screen LCD display in Chinese characters, all operations are prompted by Chinese menu instructions.

Data (including measurement results, line numbers, testers, test times, power factors, etc.) features power failure storage and browsing capabilities, and can be connected to a computer for data transmission.

6. Powered by a lithium battery, it has no impact on the test circuit and prevents the system from entering protection mode. Additionally, it can be used in the field without access to a power supply.

7. The secondary load test employs clamp meter current sampling, without the need to disconnect the secondary circuit. The auto-ranging feature allows for switching to different positions based on the test object's values during measurement, ensuring accuracy and display resolution.

8. The secondary admittance test employs isolation methods, which will not affect the secondary circuit.