Secondary Loop Detection Equipment

Basic Features:

EDDL-HThe proper operation of the online test instrument for the secondary current loop is crucial for the accuracy of electrical energy measurement. It primarily includes current transformers, voltage transformers' secondary loops, electrical energy meters, and load monitoring units. Affected by different operating environments, the secondary loop may develop potential fault risks after some time in operation. If not detected and addressed promptly, these issues could lead to accidents. There are various types of faults that can occur in the secondary loop, such as poor grounding,分流, contact damage, and transformer winding insulation breakdown. These faults typically manifest as changes in loop admittance (or impedance). Therefore, testing the loop admittance is an efficient and convenient method for fault analysis, helping to avoid blind troubleshooting, difficulties with power outages for maintenance, or the inability to detect faults after power is restored.

Excessive comprehensive error in electrical energy measurement is another critical issue commonly encountered in the field. The comprehensive error in electrical energy measurement is composed 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 of Electric Energy Measuring Equipment" operation manual, specific requirements are also outlined for the actual load measurement of the secondary circuit of transformers. In reality, the actual secondary load of transformers significantly impacts their accuracy.

Currently, most secondary load test methods on the market use the voltage-amperage phase method for testing. This method 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 leverages cutting-edge technological advancements, integrating with...DSPThe platform technology has developed and produced high

A performance-to-price ratio, metering secondary loop admittance online tester that has reached the international advanced level in technological standards.

Technical Features:

1.Molded Plastic Enclosures Ensure Safety for Test Personnel and Systems.

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

3.Adopting electronic principle circuitry.DSPTechnology ensures good test stability and strong anti-interference capability.

4.All operations are guided by Chinese characters on a large-screen LCD display.

5.Data (including measurement results, serial numbers, testers, test times, power factors, etc.) features power-down storage and browsing capabilities, and can be connected to a computer for data transfer.

6.Battery-powered with no impact on the test circuit, preventing system protection issues. Also operable without power supply at the site.

7.The secondary load test employs clamp meter current sampling without the need to disconnect the secondary circuit. It automatically switches ranges, allowing for adjustments to different positions based on the test object's values, ensuring measurement accuracy and display precision.

8.The secondary admittance test is conducted using an isolation method, which will not affect the secondary circuit.