发明名称 |
Static trip circuit breaker with automatic circuit trimming |
摘要 |
Electronic trip units employed within static trip circuit breakers are individually calibrated and automatically adjusted to ensure that the trip transfer characteristics are within specification requirements. A trimming network within the trip unit circuit contains a plurality of parallel resistors each separately connected within the circuit by means of a fusible link. Test input and output values are compard to idealized values that are binary-weighted within a look-up table in the test equipment computer. The percent correction required is determined and the appropriate links are interrupted to provide ideal trip response.
|
申请公布号 |
US4788620(A) |
申请公布日期 |
1988.11.29 |
申请号 |
US19870118574 |
申请日期 |
1987.11.09 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
SCOTT, GRAHAM A. |
分类号 |
H02H3/02;H02H3/00;H02H3/05;H03K17/00;(IPC1-7):H02H3/093 |
主分类号 |
H02H3/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|