Title:
電子回路ブレーカおよび保護スイッチングを提供する方法
Document Type and Number:
Japanese Patent JP5297537
Kind Code:
B2
Abstract:
A protection switching system in a power supply distribution system, comprises at least one protection switch (25) comprising a controllable semiconductor arranged to conduct current through the power supply line in a normal mode, a control unit (27) arranged to place the at least one protection switch in a test mode in which the current is reduced compared to the normal mode, registration means (28, 29) for registering a test mode value of at least one electrical characteristic in the power supply line that will be affected when the test mode is applied, a monitoring unit (30; 47) arranged to evaluate the at least one electrical characteristic and determine, based on the evaluation, whether or not an action should be taken. If a malfunction is detected an alarm is issued to indicate to service personnel that the protection switch should be replaced.
Inventors:
Holman, Johann
Kramer, Hans
Kramer, Hans
Application Number:
JP2011547853A
Publication Date:
September 25, 2013
Filing Date:
January 28, 2009
Export Citation:
Assignee:
Telefon Akti Bora Get Elm Ericson (Pubble)
International Classes:
H03K17/687; G01R19/165; H03K17/00
Domestic Patent References:
| JP2006502627A | ||||
| JP2224521A | ||||
| JP2003304145A |
Foreign References:
| US4949211 |
Attorney, Agent or Firm:
Yoshiyuki Inaba
Toshifumi Onuki
Toshifumi Onuki