Requirements relating to IEC 60252-1 durability test sets for AC capacitors
Self-healing capacitors are high-performance capacitors with self-healing capability and high durability. However, in order to ensure the performance stability and long-term reliability of self-healing capacitors, it is important to conduct durability tests under different environmental conditions.
In accordance with IEC60252-1: 2013 AC motor capacitors Part 1: General provisions Performance, tests and ratings Safety requirements Installation and operation guidelines Section 2.13 Durability test requirements, this test is intended to verify the suitability of the capacitor design for the operating class specified by the manufacturer. It is required by the standard to ensure that the capacitor case temperature is as close as possible to the maximum permissible capacitor operating temperature.
Design features.
1. the test cabinet adopts high-grade anti-static spray Xu standard cabinet, the colour is grey-white.
2. display and control: 10-inch colour touch screen + Omron PLC intelligent controller, friendly man-machine interface. The system automatically controls the 3. boosting and bucking voltage to avoid the influence of power supply fluctuation on the test results: real-time monitoring of reactance current, capacitance current, line current, the capacity of the capacitor changes during the test process or short-circuit, the system automatically adjusts the inductance, capacitance matching.
3. The system can automatically collect the test current of each capacitor and display it.
4. System adopts intelligent controller, AC contactor, circuit breaker, relay and other electrical components are Schneider brand.
5. AC and DC voltage, current, test time and other test parameters are directly displayed on the touch screen. It has the features of simple operation, visual display and convenient adjustment.
6. Protection function: load short circuit, overload protection measures.
Technical parameters.
1. Test range of specimen: 0~50μF;
2. Test voltage: 0~1000V continuously and automatically adjustable;
3. Voltage display accuracy: earth 1.0%FS;
4. test time: 0~9999. 9H can be preset, accuracy ± 0.1S;
5. the total load of the equipment (maximum): 500μF, can be tested on 21 specimens at the same time;
6. Station: 21 (can be customised according to customer requirements);
7. current display: reactance current 0 ~ 50A, capacitance current 0 ^ 50A, line current 0 20A accuracy ± 1.5% FS;
8. equipment compatible with the durability test and impact test; impact test: 2s pass, 2s break, up to 100,000 times.
9. on-off time: 0-99S can be set, accuracy ± 0.1S;
10. equipment power supply: single-phase AC 220V 50Hz;
11. PLC + touch screen control display;
12. Automatically determine whether the capacitance of each station is abnormal, and stop timing the station test data;
13. each test station can be easily switched to access the test.
14. each data with power-down protection function.
15. with a set of test fixtures (21 sample stations (can be customised according to customer requirements);
16. over-current, over-voltage protection and delay protection.
In summary, endurance testing is essential to assess the stability, reliability and performance of self-repairing capacitors under different environmental conditions. Through endurance testing, manufacturers can ensure that self-repairing capacitors exhibit optimal performance and reliability in a variety of applications.
