| 摘要 |
<p>28 47,128 A circuit interrupter includes a trip unit consisting of a microcomputer, current transformers for sensing current flow through the interrupter, an A/D converter to supply digital values of current flow for use by the microcomputer, and an interchangeable plug-in read-only memory chip removably inserted in the front panel of the interrupter for storing parameters of the time-current tripping characteristics of the circuit interrupter.</p> |
