Title:
PROTECTION DEVICE FOR ELECTRICITY SUPPLY CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2013/161364
Kind Code:
A1
Abstract:
A protection device for an electricity supply circuit comprising: a power supply switch (11) that switches between connection and disconnection of the electricity supply circuit; a control device (12) that outputs a switching command signal to the power supply switch (11) in accordance with an input signal; and a current detector (11) that detects current flowing to the electricity supply circuit. The control device (12) comprises: a lower limit threshold determination unit (27) that determines whether or not an estimated temperature of a power line has dropped below a lower limit threshold; a timer (22) that, when a load (RL) has been turned off by the power supply switch (11), measures the amount of time that has passed since the load (RL) was turned off; and a mode switching unit (23) that switches the control device (12) to sleep mode if a prescribed time (Q1) has passed according to the timer (22) and the lower limit threshold determination unit (27) has determined that the estimated temperature of the power line has dropped below the lower limit threshold.
More Like This:
| JPH0667099 | [Title of the Invention] Static type reverse time relay |
| WO/2010/140474 | PROTECTION DEVICE FOR LOAD CIRCUITS |
Inventors:
NAKAMURA YOSHIHIDE (JP)
MARUYAMA AKINORI (JP)
UETA KEISUKE (JP)
MARUYAMA AKINORI (JP)
UETA KEISUKE (JP)
Application Number:
PCT/JP2013/054123
Publication Date:
October 31, 2013
Filing Date:
February 20, 2013
Export Citation:
Assignee:
YAZAKI CORP (JP)
International Classes:
H02H3/093; H02J7/00; H02H5/04; H02H6/00
Foreign References:
| JP2010239835A | 2010-10-21 | |||
| JP2011229319A | 2011-11-10 | |||
| JP2010239835A | 2010-10-21 |
Other References:
See also references of EP 2843791A4
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (JP)
Hidekazu Miyoshi (JP)
Hidekazu Miyoshi (JP)
Download PDF: