Residual differential device equipped with a surveillance system for the electronic power supply
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 5, 1987
Grant Date -
N/A
app pub date -
Oct 17, 1984
filing date -
Oct 24, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The electronics of a residual differential device is powered by several sources derived from the electrical system (14, 16, 18). A supply anomaly detector (36) signals the failure of one of the supply sources caused, for example, by a break in one of the wires (14, 16, 18). The anomaly detector signals the break in this wire and sends a tripping order to the protection circuit breaker (10). Voltage in the phase conductors is monitored, and an alarm device is energized, for example, if one of the phase conductors is open.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully