EP 0795183 B1 20000607 - METHOD AND DEVICE FOR PREVENTING EXPLOSIONS AND FIRES IN ELECTRICAL TRANSFORMERS
Title (en)
METHOD AND DEVICE FOR PREVENTING EXPLOSIONS AND FIRES IN ELECTRICAL TRANSFORMERS
Title (de)
VERFAHREN UND VORRICHTUNG ZUR VERHÜTUNG VON EXPLOSION UND BRAND FÜR ELEKTRISCHE TRANSFORMATOREN
Title (fr)
PROCEDE ET DISPOSITIF DE PREVENTION CONTRE L'EXPLOSION ET L'INCENDIE DES TRANSFORMATEURS ELECTRIQUES
Publication
Application
Priority
- FR 9601513 W 19960927
- FR 9511386 A 19950928
Abstract (en)
[origin: WO9712379A1] A method for preventing explosions and fires in an electrical transformer (1) with a tank (2) filled with an inflammable coolant (7), wherein a break in the electrical insulation of the transformer (1) is sensed using a pressure sensor means (11), the coolant (7) is partially removed from the tank (2) by means of a valve (15), and the hot portions of the coolant (7) are cooled by injecting a pressurised inert gas (16) into the bottom of the tank (2) to stir up the coolant (7) and expel the adjacent oxygen.
IPC 1-7
IPC 8 full level
H01F 27/12 (2006.01); H01F 27/14 (2006.01); H02H 7/04 (2006.01); H01F 27/40 (2006.01); H02H 5/06 (2006.01); H02H 5/08 (2006.01)
CPC (source: EP KR US)
H01F 27/00 (2013.01 - KR); H01F 27/14 (2013.01 - EP US); H01F 27/402 (2013.01 - EP US); H01F 2027/406 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9712379 A1 19970403; AT E193784 T1 20000615; BG 101451 A 19971128; BG 63740 B1 20021031; CA 2206793 A1 19970403; CA 2206793 C 20110920; CN 1079573 C 20020220; CN 1165581 A 19971119; CZ 153297 A3 19981216; CZ 293859 B6 20040818; DE 69608784 D1 20000713; DE 69608784 T2 20010201; DE 69608784 T9 20120329; DE 795183 T1 19980115; DK 0795183 T3 20001002; EP 0795183 A1 19970917; EP 0795183 B1 20000607; ES 2148795 T3 20001016; FR 2739486 A1 19970404; FR 2739486 B1 19971114; GR 3034274 T3 20001229; HK 1003400 A1 19981030; HU 221222 B1 20020828; HU P9800461 A2 19980629; HU P9800461 A3 20000328; JP H10510105 A 19980929; KR 100441193 B1 20041103; KR 970707563 A 19971201; MX 9703595 A 19970830; PT 795183 E 20001130; RO 116688 B1 20010430; RU 2215352 C2 20031027; SK 284150 B6 20041005; SK 64597 A3 19971008; UA 45365 C2 20020415; US 5946171 A 19990831
DOCDB simple family (application)
FR 9601513 W 19960927; AT 96932665 T 19960927; BG 10145197 A 19970502; CA 2206793 A 19960927; CN 96191137 A 19960927; CZ 153297 A 19960927; DE 69608784 T 19960927; DE 96932665 T 19960927; DK 96932665 T 19960927; EP 96932665 A 19960927; ES 96932665 T 19960927; FR 9511386 A 19950928; GR 20000401961 T 20000830; HK 98102548 A 19980325; HU P9800461 A 19960927; JP 51319097 A 19960927; KR 19970702887 A 19970501; MX 9703595 A 19960927; PT 96932665 T 19960927; RO 9700953 A 19960927; RU 97110673 A 19960927; SK 64597 A 19960927; UA 97052372 A 19960927; US 83692997 A 19970519