DESIGN OPTIMIZATION OF PERMANENT MAGNETIC ACTUATOR FOR 24 KV VACUUM CIRCUIT BREAKER MECHANISM

• Main Author: Dwi Hartanto, Aditya
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/54081
• Institution: Institut Teknologi Bandung

The permanent magnet actuator is a part of the circuit breaker as a provider of energy for the process of opening and closing the circuit. Permanent magnet actuators have main components: moving core, static core, permanent magnet, and coils. Permanent magnets are chosen with the best material that is NdFeB. The permanent magnet actuator accords to IEC 62271-100: 2008 standard. The design is built on the requirements of the vacuum circuit breaker. Optimized the actuator design only on the selected permanent magnet. The actuator design uses 2 coils which function to open and close the circuit. The main function of permanent magnets is to maintain contactor conditions in the vacuum interuppter. There are 5 variations of permanent magnets based on grade that is N35, N52, N50M, N30H, and N30SH. From this research, a permanent magnet with class N35 was selected with a opeing time 17.38 ms passed IEC standards with a minimum opening time of 32.5 ms.