Arrangement for the fault current monitoring of a branched in or multi-phase net

The invention concerns an arrangement for the fault current monitoring of a branched in-- or multi-phase net by means of a single-pole earth-leakage circuit breaker with sum current transformer, to which the Leitungsschutzschalter of each branch are connected to a unit cultivated and with it. With branched nets it is well-known to secure each Ahzweig with a Leitungsschutzschalter (LS switch) thereby with an overloading and/or a disturbance in a branch responding the protection, which is called the LS switch only the loss of the devices of this branch to the consequence has. If a Fehlerstromäberwachung is to be planned, then a Fehhrstromschutzschalter (FJ-switch) can be used in each branch, which takes over the function of the LS switch with. Also hiebei each branch has its full independence, is called also with entering t0 fault current only the disturbed branch is shut down, but has such a circuit the disadvantage that äe is ranmbeanspruchend extraordinarily complex and. With fault current all branches are stiUgelegt by aUen branches a superior FJ-switch at the same time. The individual branch is no longer independently adjustable however with the well-known remarks of the FJ-switches, if Oberstromund Kurzschlul cause is accommodated in tS the fault current switch. The Einzelabsehaltung requires rather an additional switch in each branch. If this Mängd is to be repaired with use of FJ-switches in branched nets, then the task is to be solved, the LS switch of each Abzweäges independent of the remaining LS-Sehaltern za to be made and all branches together for Fehhrstrom to be checked. The invention serves the solution of this task. It consists of that the causes of everyone are coupled the Leitungsschutzschalter only with the SchaltscMoß of the own LS switch and that in contrast to this the Fehlerstromauslöser with all latches of the switches combined to a unit is gekuppdt that clutch members are present regarding the Ansschaltrichtung of the Fehlerstromsehutzschalters for the inevitable taking along of the manual control organs of the LS switches and are arranged regarding the switching on direction of the earth-leakage circuit breaker free moving to the manual control organs of the LS switches that the manual control organs of the LS-Schaker are solved from the Kupplungsgtiedern with individual Rückführnng into the off position that against it for the hand engagement of each LS switch this is actuated with the not switched on operating organ of the earth-leakage circuit breaker connected to the Miteinschalten by Kupplangsglleder. To the Fehlerstromerfassang it is appropriate that the river of each branch is and its P.ückleiter and/or the Mittdpunktshiter over one Wicklnng each of the Sammenstromwandlers vehicle. Predivide a such Fehhrstromüberwachung are the small P.aumbedarf, since the LS switches with the khinsten unit of a FJ-switch are assembled to a Baaeinheit. 3s in addition is in as much given the angesauten LS a large Anpassungs£ähigkeit to each network of distributors as the number--Sehalter of each branch number is anptBbar. If the river of each branch is gefiihrt over an independent coil of the Su1 n1 nenstr01 nwandlers, result favourable, handy, dünndrähtige windings, which are to be manufactured simply. The special advantage is the use of a L5-Schalters flir the Abschahung with Fehlstro1 n, as well as the disconnection independent of the FJ-switch with Überbzw. Prospective current of a circuit and the alternatively independent Ausbzw. Capable of being activatedness of each branch. The same Vortdh remain and/or are still increased, when the windings of the Summenstr01nwandlers are net-laterally to the Auslösera of the LS switches switched. For the Fehlerstromtiberwachung hiebei four coils at the Su1 n1 nenstr0 are sufficient more mwandier for the monitoring of the three phases and the Mittelpunktoder NuUeiters. Each phase several Abzwdge can go off, which are secured by L8-Schalter separately. All L5-Schalter of the branches is coupled with the Fehlerstromanslöser. The invention is for example represented in the designs: Fig.1 shows the entire erfllndungsgemäße arrangement; Fig.2 and 3 show two different Schaltnngs orders. At the single-pole FJ-switch --1-- is independent single-pole LS-Schaher --2-- according to the number of net branchings cultivated and to a unit combines. The LS-Schoher--2-- are with Überstr01 n --3-- and short-circuit causes --4-- equipped. The connecting cables --5-- are over Wicldungen --7,8-- the sum current transformer --9-- led. Likewise is the Schahkontakt --10-- the FJ-Schohers --1-- with such a coil --6-- connected. The Fehlerstromauslöser --11-- the latch is direct and/or over --12-- the FJ-switch --1-- with the Schahschlössem --13-- the cultivated LS-Sehalter --2-- in interference. Both the FJ-switch --1--, like the LS switches --2-- possess a manual control organ --14,15--, those over clutch members --16,17-- into an actuated connection to come can. The strichlierte connection in Fig.1 is the following dependence of the E! to 01 nente suggest: With short-circuit or Überstr01 n only the single circles concerned are separated. With Fehlerstr01 n the total release takes place. Each LS switch --2--can be switched on independently, but steps over the Kupphngsglieder --16,17-- with manipulation of the first LS switch an actuated connection with dern operating organ --14-- the FJ-Schahers --1-- , so that this is always switched on with. It is therefore indifferently, how much branches are in enterprise, in each case is switched on the Fehhrstrolnüberwachung. During each LS switch --2-- without influence on the FJ-switch --1-- by hand or over the inserted causes --3,4-- to be switched off can become, against it all LS switches --2-- switched off if the FJ-switch --1-- it is switched off indifferently whether the disconnection over the operating organ --14-- or due to a fault current by the Fehlerstr01 more nauslöser --11-- taken place. This arrangement guarantees a safe Fehlerstrolnüberwachung, made possible however at the same time a partial enterprise one not by Oberoder prospective current of a circuit of disturbed branch of the net and does not permit the separate engagement of each individual Abzwdges. In Fig.2 is the Anschlitsse of the Zuldtungen also --18 and 19-- marked. From these connections parallde lines go --20 and 21-- to the consumers off. A dot and dash line --22-- suggests the following circumstances: Became the SummenstromwandIer --9-- on the level --22-- (also under sdbstverständlicher collection of the Mirtelpunktleiters) inserted and not according to requirement, then the advantage of the Fehhrortung would be not given 2. The line --21-- can as branch of the line --20-- are understood. Of the connections --18 and 19-- to the line side both lines can be combined into a common Zuhitung. Fig.3 shows an example flir a switch arrangement, with two separated Str01 the nkreise --20,21-- over the Summenstromwandhr --9-- are led. The windings of the Summenstr01nwandlers --9-- are accordingly supplemental (--8a and self-service--). By in the Fällan shown the windings --6,7,8-- the Su1 n1 nenstr01 nwandlers --9-- net-laterally to the causes --3,4-- the LS-Schaher --2-- , the equipment is switched from Fehhrstrom is protected. In further arrangement of the invention the operating organ of the Fehhrstromschntzschalters does not need to be led out from the housing. This measure emp ehk itself with mechanical Kopplnng of several control devices of the descriptive kind to the mutual taking along.