Relays TRIZ Cases
- ERMS Control Circuit With Timed Automatic Deactivation
A delay timer automatically turns off the ERMS after a preset interval, reducing human error and improving remote switchgear maintenance reliability.
- Contactor Coil Control for Stable Attraction Under Current Drop
Abnormal current drop detection extends coil supply time only when needed, keeping contactor attraction stable while limiting energy use.
- Contactor Pull-In Control Using Abnormal Current Drop Detection
Abnormal current drop detection extends contactor pull-in time only when needed, improving attraction stability under harsh voltage or temperature conditions.