Load tap changer tester

Product actual shot

Product Overview

transformerLoad tap changer testerIt is designed according to the high voltage testing equipment of the power industry standards of the People's Republic of China, with general technical conditions DL/T846, 8-2004. It can meet the requirements of the "Regulations for Handover and Preventive Testing of Power Equipment", such as checking the action sequence of on load tap changers and measuring switching time. It can achieve accurate measurement of parameters such as transition time, transition waveform, transition resistance, and three-phase synchronicity of on load tap changers, making it an ideal device for testing on load tap changers.

Performance characteristics

1. Test Y0, Y, △ type transformers, and display resistance values directly without conversion;
2. Humanized data analysis can automatically identify faults in the middle of the waveform and mark them;
3. The waveform display automatically adjusts the resistance and time amplitude based on the sampled data;
4. △ - type transformers can display three-phase synchronicity;
5. It can be tested with or without windings;
6. Four terminal wiring method, providing high-precision resistance measurement without the need for wire compensation;
7. Continuous testing can be conducted during testing to save time on transformer power outages;
8. The instrument can generate Word reports for easy data management and retrieval;
9. The instrument is controlled by a small computer, equipped with an 800 × 480 color LCD touch screen, high-speed printer, and supports external mouse for easy operation;
10.Load tap changer testerInternally, it can automatically save 1000 sets of data, or it can be saved on an external USB drive.

Technical specifications

1. Three phase constant current source charging, charging current: 3A/1A range; 0.6A/0.2A gear
2. Port high voltage: 24V
3. Transition resistance large range: 100 Ω
4. Transition resistance measurement range: 1A range: 0.4 Ω~20 Ω 0.2A range: 10 Ω~100 Ω
5. Duration of waveform recording: 300ms
6. Sampling rate: 30k
7. Time resolution: 0.1ms
8. Resistance resolution: 0.1 Ω
9. Accuracy: Transition resistance: ± 5% reading ± 0.1 Ω Transition time: ± 0.5% reading ± 0.2mS
10. Operating temperature: -10~40 ℃ Operating relative humidity:<85% RH

Precautions

1. The instrument can be used with a coil for measurement, but live measurement is strictly prohibited, and the connection at the testing end should be disconnected;
When testing with windings, the non test end of the transformer should be grounded in a three-phase short circuit, and the O end of the instrument should not be grounded;
3. For load switches that have not been operated for a long time, the switch should be switched multiple times before testing to remove the oxide layer on the contact surface and impurities between the contacts;
Before use, the grounding terminal of the instrument must be properly grounded;
5. Two or more sets of wires cannot be connected together as one measurement, and unused wires must be open circuited;
During the testing process, it is not allowed to dismantle the testing line;
After the test is completed, turn off the instrument first and then remove all wiring.

Standard Configuration

Within 12 months from the date of purchase of the instrument, any quality issues related to the company's products will be repaired free of charge, and lifetime warranty and technical services will be provided.

All products of Guohao Electric have achieved planned inventory, with a large quantity of regular specifications in stock.
Guohao Electric provides a three-year warranty and lifetime service for the products sold.
Guohao Electric values every customer and provides the necessary information and quotation within ten minutes.