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1. The distribution of temperature field of air core reactor is obtained.

2. Based on the parameter calculation of the air core reactor, this paper presents a pulse voltage resonance method to detect turn to turn insulation defects in air core reactors.

3. The finite element model of the air core coil is established and the influential factors of conductor size is analyzed.

4. The magnetic field of dry-type air core reactor with spatial closed loop is calculated with analytic method. And the effect of closed loop on parameters of a reactor is explored.

5. The forming process and shape of the air core were remarkably influenced by the feed flowrate and cone angle of hydrocyclones.

6. The influence of air core on separation performance of hydrocyclones was deeply analyzed.

7. Because of its sensing principle and structure, the air core coil is sensitively affected by the field magnetic disturbance and temperature.

8. Through over voltage on - line monitoring device testing , inquire into lightning protection of the reactor air core.

9. The advanced KODAK EKTAPRO HS Motion Analyzer was utilized to systematically observe the forming process and the shape of air core inside hydrocyclones for the first time.

10. Inadequate submergence can result in pre-rotation of the water in the wet-well, resulting in the formation of strong free-surface air core vortices and the entrance of air into the pump suction inlet.

11. To avoid shortcomings of conventional current transducers in insulation and saturation, the hybrid optical sensor head of a new type air core current transducer is presented.

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12. In recent years, the electronic current transducer based on the air core coil has become the hot research spots in the power system.

13. The efficient separation of oil and water was mostly influenced by the stability of air core.

14. For the requirements of air-core reactor's rapid detection, this article has designed air core reactor inner surface of the rapid detecting instrument's drive system and control system.

15. A new type of NC vertical winding machine is developed for the manufacturing of air core shunt reactor, which has the function of winding conductor and glass yarn automatically.

16. If a coil has no metal core it has an air core.

17. This is why high frequency transformers often have an air core .

18. The measured results show that the main flow in the hydrocyclone is a three dimensional helical downward movement with an air core directly connected with the underflow pipe.

19. Through over voltage on-line monitoring device testing, inquire into lightning protection of the reactor with air core.

20. So, this work concentrates on the design, construction and test of air core transformer.