The comprehensive instrument transformer tester is a professional testing instrument mainly used for instrument transformer testing in the power industry. This instrument usually has multiple functions and can complete CT volt-ampere characteristic test, CT ratio polarity test, CT polarity test, CT secondary circuit test and AC withstand voltage test, etc.
When selecting a comprehensive instrument transformer tester, the following factors should be considered to ensure that the selected equipment can meet the actual testing needs, ensure test accuracy, and take into account operational convenience and safety. Here are some specific purchasing guidelines:
1. Test functional compatibility:
Confirm whether the tester supports various types of transformers you need to test, including current transformers (CT), voltage transformers (PT), and different structures (such as electromagnetic, capacitive, protection type, measurement type, TP type ) and transformers of different voltage levels.
2. Measuring range: Check whether the voltage and current output range of the tester adapt to the working conditions and test standard requirements of the instrument transformer under test, especially the maximum output voltage, current and the precision of step adjustment.
3. Accuracy level: Understand the measurement accuracy of the tester itself and ensure that it complies with national or international standards, such as IEC, GB and other regulations, to ensure the credibility of the test results.
4. Stability and anti-interference ability: Evaluate the stability and anti-interference ability of the tester under different environmental conditions, especially the suppression measures for on-site power frequency interference.
5. Degree of automation and ease of operation: Testers with automatic voltage boosting, automatic drawing of volt-ampere characteristic curves, automatic calculation of error curves and inflection points are preferred to reduce manual intervention and improve work efficiency. Check to see if the tester is equipped with a large LCD screen that provides intuitive graphical display and menu navigation, as well as an easy-to-use control panel (such as a rotary mouse, touch screen, etc.).
6. Data processing and report generation: Examine whether the equipment can automatically record data, generate test reports, and even have the ability to print results directly on-site to a built-in or external printer.
7. Scalability and compatibility: For large or special transformers, higher voltage or current output may be required. At this time, you should confirm whether the tester supports external boosters, current boosters or voltage regulators to expand the test range. .
8. Communication interface and software support: Check whether the device has USB, RS232, LAN and other interfaces, and support exporting data to a computer for further analysis or generating professional reports. At the same time, confirm whether supporting host computer software is provided to facilitate data management and remote monitoring.
9. Portability and safety: According to the work scenario, choose the appropriate size, weight and power supply configuration (such as AC and DC dual-use, battery power supply, etc.) to ensure that the equipment is easy to carry to the site. Check whether the tester has protection mechanisms such as overvoltage, overcurrent, and short circuit, as well as safety designs such as grounding and isolation to ensure the safety of operators and equipment under test.
10. Brand reputation and after-sales service: Choose manufacturers with industry recognition, good reputation and rich industry experience. Their products are usually more secure in terms of technological maturity, quality control, technical support and service network. Understand the warranty period, maintenance services, technical consultation, software upgrades, spare parts supply, etc. provided by the supplier to ensure that equipment problems can be solved in a timely and effective manner.
To sum up, when selecting a comprehensive instrument transformer tester, you should fully consider the specific needs, working environment, budget constraints and the possibility of future business expansion of the instrument transformer under test, and compare the technical parameters, functional characteristics, and performance of products from different manufacturers. User reviews and after-sales service to make the choice that best meets actual needs. If necessary, you can consult industry experts or contact the manufacturer directly for detailed product information and professional advice.
