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.)
Expired
Application number
GB13462/46A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co LtdfiledCriticalBritish Thomson Houston Co Ltd
Publication of GB611656ApublicationCriticalpatent/GB611656A/en
H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
H02H9/08—Limitation or suppression of earth fault currents, e.g. Petersen coil
Abstract
611,656. Protective arrangements. BRITISH THOMSON - HOUSTON CO., Ltd. May 3, 1946, No. 13462. Convention date, May 7, 1942. [Class 38 (iv)] To assist the suppression of fault currents where two sections L1, L2 of a polyphase network, of which the neutral of one may be earthed through a suppression coil B and the other directly earthed, are interconnected, homopolai currents i occurring are restricted by means of a polyphase transformer, of which the primary windings P are connected in series between the sections of the network, the secondary windings S being starconnected and short-circuited and an inductance X being connected between the two neutral points of this secondary circuit.
GB13462/46A1942-05-071946-05-03Improvements relating to protective arrangements in polyphase electric networks
ExpiredGB611656A
(en)