Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Charbonnages de France CDF
Original Assignee
Charbonnages de France CDF
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Charbonnages de France CDFfiledCriticalCharbonnages de France CDF
Priority to FR7121072ApriorityCriticalpatent/FR2140319A1/fr
Publication of FR2140319A1publicationCriticalpatent/FR2140319A1/fr
H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
H02H11/004—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of incorrect phase sequence; with switching for obtaining correct phase sequence
G—PHYSICS
G01—MEASURING; TESTING
G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00