SE410068B

SE410068B - KNIFE PROTECTION DEVICE

Info

Publication number: SE410068B
Application number: SE7800944A
Authority: SE
Inventors: A Lugnet; M Nygard
Original assignee: Asea Ab
Priority date: 1978-01-26
Filing date: 1978-01-26
Publication date: 1979-09-17
Also published as: SE7800944L

Description

15 20 25 50 55 78001911-4-6 2 inte användas vid andra. än sådana. som ingår i sälcrings-lastfrân- skiljare. Ändamålet med uppfinningen är att åstadkomma. en lcnivsäkrirzgsanordzzing med ett enkelt och universellt användbart indikeringsdon för säkringsövervalmixxg av sådant utförande", att lcnivsälmingspatroner av i marknaden vanligt förekommande typ kan användas. Detta uppnås enligt uppfinningen genom att en för inkoppling av indikeringsdonet avsedd hjälpkontalct inmonterasi säIQ-íligslmderdelen nära sälcringens ena ordinarie klykkontakt men på. isolationsavstånd från denna., var- vid sälcr-ingspatronens ena kontaktkniv utgör kopplingselement mellan nämde. hjälpkontakt och klykkontslct. Då säkringspatronen tas ut kommer därvid hjälp- kontakten och det till denna kopplade indikeringsdonet att bli spänningslösa.. stf; sådant utförande är base enkelt och tinförlitngz. 15 20 25 50 55 78001911-4-6 2 not be used by others. than such. which is included in seal ring load separators. The object of the invention is to achieve. a leveling device with a simple and universally usable indicator for fuse overheating mixes of such a design that leveling cartridges of the type commonly used in the market can be used. This is achieved according to the invention by means insulating distance from this, whereby one of the contact knives of the sealing cartridge constitutes a connecting element between said auxiliary contact and clamping contact. When the fuse cartridge is removed, the auxiliary contact and the indicator connected thereto will become de-energized. simple and tinförlitngz.

Uppfinningen skall närmare beskrivas i anslutning till ett på bifogade ritning visat utföringsexempel. Fig 1 visar i sidovy en krzivsälu-ing enligt uppfinningen, fig 2 visar ett snitt efter linjen A-A i fig 1, och fig 3 visar en vy enligt linjen IB-B' i fig 1. ~ « Den i ritningen visade lcnivsälcringen omfattar en sockel 1 av isolsrmaterial, på. vilken monterats två. klykkontakter 2 och 3 försedda med anslutningsskenor 4 resp 5. Mellan klyklcontakterna 2, 5 är insatt en lcnivsälmingspatron 6 av i mark- naden förekommande utförande med isolerande patronkropp 7, metalliska gavelplat- tor8, 9 och kontaktknivar 10, 11. Sockeln 1 är försedd med isolerande skärmar 12, 15 mellan klykkontaktemla 2, 5 och patronkroppen 7..I skärmar-na har upp- ~ tagits spår för kontalctknivarna 10, 11., Mellan skärmen 13 och patronlcroppen 7 har på sockeln 1 anordnats en klykformig hjälpkontalct 14. Denna. är försedd med anslutningsslcruv 15 och via. ett indike- ringsdon 16 kopplad till snslutningsskenan 4 vid sälcr-ingens andra ände. Hjälp- kontakten 14 är tillverkad av plåtmaterial och är utformad genom stansningoch' bockning på. sådant sätt, att den nära »ansluter sig till sockeln 1, varigenom dess utrymmesbehov är minimalt. Iﬂykskänklarnas övre ändar har bockats in mot skärmen 13 och är dessutom avfasade för att ge klykan större fångvidd. Därigenom hindras inte sälcrixxgspstronens insättande i. sockeln. I Indikeringsdonet 16 kan lämpligen utgöras av en motorskyddsbrytare' med termisk överlastutlösare och elektromagnetisk momenten överströmsutlösare (t ex' typ DAFJG enligt ASEA-katalog SK 46-2, oktober 1974). Genom motorslçyddsbrytarens hjälpkontakt kan en på. en kontrolltavla e d placerad signellampa eller akustiskThe invention will be described in more detail in connection with an exemplary embodiment shown in the accompanying drawing. Fig. 1 shows in side view a curved seal according to the invention, Fig. 2 shows a section along the line AA in Fig. 1, and Fig. 3 shows a view along the line IB-B 'in Fig. 1. The blade seal shown in the drawing comprises a base 1 of insulating material, on. which mounted two. clamp contacts 2 and 3 provided with connection rails 4 and 5, respectively. Between the clamp contacts 2, 5 is inserted a lnnivsälmings cartridge 6 of the market version with insulating cartridge body 7, metallic end plates 8, 9 and contact knives 10, 11. The base 1 is provided with insulating screens 12, 15 between the hook contact members 2, 5 and the cartridge body 7. Tracks for the contact knives 10, 11 have been accommodated in the screens. is equipped with connection screw 15 and via. an indicator 16 connected to the closing rail 4 at the other end of the seal ring. The auxiliary contact 14 is made of sheet metal material and is designed by punching and bending on. in such a way that it closely adjoins the base 1, whereby its space requirement is minimal. The upper ends of the yoke legs have been bent towards the screen 13 and are also chamfered to give the fork a greater catch width. This does not prevent the insertion of the seal crixxgspstron into the socket. The Indicator 16 may suitably consist of a motor protection switch 'with thermal overload trigger and electromagnetic torque overcurrent trigger (eg' type DAFJG according to ASEA catalog SK 46-2, October 1974). Through the motor protection switch's auxiliary contact, one can switch on. a control panel or placed signal lamp or acoustic

Claims

An alarm device is switched on and / or a switch arranged in the main current path is tripped. The fuse is connected in a circuit so that the connection rail 5 will be on. the net side and the rail 4- on the load side. When a fuse breaks, the motor protection switch 16 arranged for fuse override is tripped, whereby an indication of a fuse break is obtained. When the sealing ring cartridge 6 is removed, the auxiliary contact bracket 14 is separated from the fuse's mains-connected bolt contact 3. This prevents the load side of the sealing ring from being connected to a live part via the display device. The invention is not limited to the exemplary embodiment shown but can be realized on. multiple. way. For example, the auxiliary contact 14 does not have to be designed as a fork, but can instead consist of a resilient tongue, which, when the fuse cartridge is inserted, rests against the end plate 9_. i PATENTIGÅV 1.

A knife smoothing device comprising a base (1) with two spaced apart soft connectors (2, 5) provided with the closing conductor (4, 5) for electrical conductors, one between the clamp contacts. (2, 5) arranged sealing cartridge (6) of the type having an insulating cartridge line-up (7) with a contact sleeve (10, 11) at each end, and an indicator device (16) for fuse overflow, known as provided that on the base (1) between one clamp contact (3) and the cartridge body (7) an auxiliary contact (14) intended for connection of the indicating device (16) is arranged, which when inserted fuse cartridge (6) is connected to the said one the clamp contact (5) via one of the fuse cartridge contact mivad- (11). '

Device according to claim 1, characterized in that the base (1) is provided with an insulating shield (13) between the cartridge body (7) and at least one of said clamp contacts.

Device according to claim 2, characterized in that the auxiliary contact (14) is arranged between the screen (13) and the cartridge body (7).

4. Device according to claim 1, 2 or 5, characterized in that the auxiliary contact (14) consists of a punched and bent sheet metal element, the surface of which is 7-8009411-6 -¿vaoo944-s. is directed substantially perpendicular to the plane of the cooperating contact lens (11). I: _

Device * according to claim 4,. is known from the fact that the sheet metal element (14) is designed so that it closely adjoins the surface of the insulating base (1, 15).

Device according to one of the preceding claims, characterized in that the auxiliary contact (14) is designed as a hook. MENTIONED PUBLICATIONS: