Electromagnetic relay device and control method thereof
US10734177B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 2017 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Jan 3, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2047/006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure illustrates an electromagnetic relay device and a control method thereof. In the electromagnetic relay device, a control circuit respectively provides driving power to switch on the two electromagnetic relay units disposed adjacent to each other, and then provides the first holding power and the second holding power, lower than the driving power, to the two electromagnetic relay units after the two electromagnetic relay units are switched on, thereby maintaining the two electromagnetic relay units in the switched-on status. When the electromagnetic relay unit receiving the second holding power is tripped because of the environmental factor, the electromagnetic relay unit receiving the second holding power generates and outputs the trip feedback signal to the control circuit, so that the control circuit increases the first holding power upon receipt of the trip feedback signal. The second holding power is lower than or equal to the first holding power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.