CN202564051U - Versatile current transformer of protector - Google Patents
Versatile current transformer of protector Download PDFInfo
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- CN202564051U CN202564051U CN2012202733111U CN201220273311U CN202564051U CN 202564051 U CN202564051 U CN 202564051U CN 2012202733111 U CN2012202733111 U CN 2012202733111U CN 201220273311 U CN201220273311 U CN 201220273311U CN 202564051 U CN202564051 U CN 202564051U
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Abstract
A versatile current transformer of protector of the present utility model relates to various intelligent or analog-circuit protectors for a motor, power capacitor, etc., and a current transformer thereof. The current transformer has two or more primary windings and a secondary winding. A first primary winding is wound with five turns on the current transformer, and has its head and tail connected with first primary winding connecting terminals of the transformer, and the current flowing through the first primary winding is of 1 A standard current specification; a second primary winding passes through a threading hole of the current transformer to be one turn, the current flowing through the second primary winding is of 5 A standard current specification, and there is a need for secondary current or the secondary winding to satisfy the circuit check requirements of the protector. The current transformer is used for matching with external conventional current transformers with secondary standard current being 1 A or 5 A. Three similar current transformers constitute a versatile current transformer of three-phase protector, thus providing a series of versatile current transformers of protector.
Description
Technical field
The utility model relates to motor protector, pump class protector circuit, power capacitor protector, line protector of various intelligent or analog circuits etc. and current transformer, particularly protector Universal-current instrument transformer.
Background technology
Various current samples intelligent or split of analog protection circuit device or one such as motor protector, pump class protector, power capacitor protector, line protector generally have three kinds of modes at present: the one, and protector self instrument transformer divides multiple series specification to supply various power electric motors to select for use; The 2nd, protector self instrument transformer can only mate the conventional current instrument transformer of 1 ampere of standard specification of external secondary current; The 3rd, protector self instrument transformer can only mate the conventional current instrument transformer of 5 amperes of standard specifications of external secondary current.Secondary current when conventional at present current transformer rated current is exported has 1 ampere or 5 amperes of two kinds of standard specifications; Protector all can run into the problem of external impressed current transformer coupling when being used for big electric current; Also do not possess at present 1 ampere or 5 amperes of two kinds of standard specifications or three kinds of protector Universal-current transformer products that standard specification is selected for use simultaneously; Shortcoming is that the user is left with no alternative, and has only the external impressed current of replacing transformer specification, perhaps replaces the protector product.
Summary of the invention
The purpose of the utility model is to above-mentioned defective, and protector Universal-current instrument transformer series is provided, and structural principle is to make a penetration type current transformer, by two or more windings and the current transformer that secondary winding is formed.Like a winding one is coiling five circles on current transformer, and the electric current through a winding one is that primary current one is 1 ampere of normalized current specification, winding one binding post of instrument transformer that is end-to-end of a winding one of instrument transformer; Winding two is that in the through wires hole of current transformer, to pass be a circle; Electric current through a winding two is that primary current two is 5 amperes of normalized current specifications; So just constitute the dual gauge current transformer of a secondary winding of two windings, secondary current or secondary winding need satisfy the requirement of protector circuit debugging.External conventional current instrument transformer secondary standard electric current connects the binding post of a winding one of current transformer of protector during for 1A, and external conventional current instrument transformer secondary standard electric current is applied in during for 5A in the feedthrough hole of a winding two of current transformer of protector.Current transformer if any three windings and a secondary winding composition has just constituted three specification current transformers, makes three identical current transformers combinations and has just constituted three-phase protective device Universal-current instrument transformer.
The technical scheme of the utility model is a protector Universal-current instrument transformer; Comprise single phasing protection device Universal-current instrument transformer one or single phasing protection device Universal-current instrument transformer two or three-phase protective device Universal-current instrument transformer one or three-phase protective device Universal-current instrument transformer two; It is characterized in that protector Universal-current instrument transformer is the current transformer that a secondary winding of two or more windings is arranged; The number of turn of a winding one is five times of relations of the number of turn of a winding two; Pass in the through wires hole of current transformer is that the standard current value of a circle is the number of turn value of a winding one; The current transformer that a secondary winding of two windings is arranged; A winding one is coiling five circles on current transformer, and winding two is that in the through wires hole of current transformer, to pass be a circle, and wherein winding of instrument transformer one matees external conventional current instrument transformer secondary standard current specification respectively with winding two of instrument transformer and selects for use for 1 ampere or 5 amperes; Single phasing protection device Universal-current instrument transformer one is by two windings and current transformer one La that secondary winding is formed in the protector Universal-current instrument transformer; One winding one Lad of instrument transformer are coiling five circles on current transformer one La, and its one windings of instrument transformer, one binding post Ha that is end-to-end is instrument transformer one primary current one Iad through its electric current; Its rated current is 1 ampere of normalized current specification; One winding two Lae of instrument transformer are that in the through wires hole of current transformer one La, to pass be a circle, and its outside conventional instrument transformer secondary winding binding post Hc that is end-to-end is instrument transformer one primary current two Iae through its electric current; Its rated current is 5 amperes of normalized current specifications; Instrument transformer one secondary winding Laf connects protector amplifying circuit QB, constitutes the dual gauge current transformer of a secondary winding of two windings, and external conventional current instrument transformer secondary standard electric current is one windings of instrument transformer, the one binding post Ha that 1 ampere-hour connects protector; External conventional current instrument transformer secondary standard electric current is applied in during for 5A in the feedthrough hole of one winding two Lae of instrument transformer of protector; Two windings can not use simultaneously, can only select one of them for use, and instrument transformer one secondary current Iaf is relevant with protector amplifying circuit QB debugging.
Said protector Universal-current instrument transformer; It is characterized in that single phasing protection device Universal-current instrument transformer two is by three windings and current transformer two Lb that secondary winding is formed in the protector Universal-current instrument transformer, two winding one Lbd of instrument transformer are coiling n circles on current transformer two Lb, its two windings of instrument transformer, one binding post HB that is end-to-end; Through its electric current is instrument transformer two primary currents one Ibd; Its rated current is 1 ampere of normalized current specification, and two winding two Lbe of instrument transformer are coiling 1/5th n circles on current transformer two Lb, its two windings of instrument transformer, two binding post Hd that are end-to-end; Through its electric current is instrument transformer two primary currents two Ibe; Its rated current is 5 amperes of normalized current specifications, and two winding three Lbf of instrument transformer are that in the through wires hole of current transformer two Lb, to pass be a circle, its tested electrical appliance load wiring terminal He that is end-to-end; Through its electric current is instrument transformer two primary currents three Ibf; Its rated current is the n ampere, and instrument transformer two secondary winding Lbg connect protector amplifying circuit QB, constitutes three specification current transformers of a secondary winding of three windings; External conventional current instrument transformer secondary standard electric current is two windings of instrument transformer, the one binding post Hb that 1 ampere-hour connects protector; External conventional current instrument transformer secondary standard electric current is two windings of instrument transformer, the two binding post Hd that 5 ampere-hours connect protector, and rated current is that three windings can not use simultaneously in the feedthrough hole of n ampere-hour two winding three Lbf of instrument transformer of directly being applied in protector; Can only select one of them for use, instrument transformer two secondary current Ibg are relevant with protector amplifying circuit QB debugging.
Said protector Universal-current instrument transformer; It is characterized in that three-phase protective device Universal-current instrument transformer one in the protector Universal-current instrument transformer is made up of identical A phase current mutual inductor one LaA of three performances and B phase current mutual inductor one LaB and C phase current mutual inductor one LaC; A phase current mutual inductor one LaA and B phase current mutual inductor one LaB and C phase current mutual inductor one LaC have two windings and a secondary winding respectively; A phase instrument transformer time winding one LadA one by one is coiling five circles on A phase current mutual inductor one LaA; Its A phase instrument transformer time winding one binding post HaA one by one that is end-to-end; A phase instrument transformer primary current one IadA one by one is 1 ampere of normalized current specification; A phase instrument transformer time winding two LaeA one by one is that in the through wires hole of A phase current mutual inductor one LaA, to pass be a circle; Its mutually conventional instrument transformer secondary winding of outside A binding post HcA that is end-to-end; A phase instrument transformer primary current two IaeA one by one is 5 amperes of normalized current specifications; B phase instrument transformer time winding one LadB one by one is coiling five circles on B phase current mutual inductor one LaB, its B phase instrument transformer time winding one binding post HaB one by one that is end-to-end, and B phase instrument transformer primary current one IadB one by one is 1 ampere of normalized current specification; B phase instrument transformer time winding two LaeB one by one is that in the through wires hole of B phase current mutual inductor one LaB, to pass be a circle; Its mutually conventional instrument transformer secondary winding of outside B binding post HcB that is end-to-end, B phase instrument transformer primary current two IaeB one by one is 5 amperes of normalized current specifications, C phase instrument transformer time winding one LadC one by one is coiling five circles on C phase current mutual inductor one LaC; Its C phase instrument transformer time winding one binding post HaC one by one that is end-to-end; C phase instrument transformer primary current one IadC one by one is 1 ampere of normalized current specification, and C phase instrument transformer time winding two LaeC one by one is that in the through wires hole of C phase current mutual inductor one LaC, to pass be a circle, its mutually conventional instrument transformer secondary winding of outside C binding post HcC that is end-to-end; C phase instrument transformer primary current two IaeC one by one is 5 amperes of normalized current specifications; A phase instrument transformer one secondary winding LagA is connected protector amplifying circuit QB with B phase instrument transformer one secondary winding LagB respectively with C phase instrument transformer one secondary winding LagC, and A phase instrument transformer one secondary current IagA is relevant with protector amplifying circuit QB debugging with C phase instrument transformer one secondary current IagC with B phase instrument transformer one secondary current IagB, and every phase all has the dual gauge current transformer of a secondary winding of two windings in the formation three-phase protective device Universal-current instrument transformer one; External three-phase conventional current instrument transformer secondary current is 1 ampere-hour one windings of A instrument transformer, the one binding post HaA that connects protector respectively and B instrument transformer time winding one binding post HaB and the C inferior one by one winding one binding post HaC of instrument transformer mutually one by one mutually; External three-phase conventional current instrument transformer secondary current be 5 ampere-hours be applied in protector respectively A phase instrument transformer one by one time winding two LaeA and B mutually instrument transformer one by one time winding two LaeB and C instrument transformer is one by one in the feedthrough hole of inferior winding two LaeC mutually, two windings can not use simultaneously, can only select one of them for use.
Said protector Universal-current instrument transformer is characterized in that three-phase protective device Universal-current instrument transformer two is made up of identical A phase current mutual inductor two LbA of three performances and B phase current mutual inductor two LbB and C phase current mutual inductor two LbC, and A phase current mutual inductor two LbA and B phase current mutual inductor two LbB and C phase current mutual inductor two LbC have three windings and a secondary winding respectively; Two winding one LbdA of A phase instrument transformer are coiling n circles on A phase current mutual inductor two LbA, its two windings of A phase instrument transformer, one binding post HbA that is end-to-end; The rated current of A phase instrument transformer two primary currents one IbdA is 1 ampere of normalized current specification, and two winding two LaeA of A phase instrument transformer are coiling 1/5th n circles on A phase current mutual inductor two LbA, its two windings of A phase instrument transformer, two binding post HdA that are end-to-end; The rated current of A phase instrument transformer two primary currents two IbeA is 5 amperes of normalized current specifications; Two winding three LbfA of A phase instrument transformer are that in the through wires hole of A phase current mutual inductor two LbA, to pass be a circle, the mutually tested electrical appliance load wiring of its A that is end-to-end terminal HeA, and the rated current of A phase instrument transformer two primary currents three IbfA is a n ampere normalized current specification; Two winding one LbdB of B phase instrument transformer are coiling n circles on B phase current mutual inductor two LbB; Its two windings of B phase instrument transformer, one binding post HbB that is end-to-end, the rated current of B phase instrument transformer two primary currents one IbdB is 1 ampere of normalized current specification, two winding two LaeB of B phase instrument transformer are coiling 1/5th n circles on B phase current mutual inductor two LbB; Its two windings of B phase instrument transformer, two binding post HdB that are end-to-end; The rated current of B phase instrument transformer two primary currents two IbeB is 5 amperes of normalized current specifications, and two winding three LbfB of B phase instrument transformer are that in the through wires hole of B phase current mutual inductor two LbB, to pass be a circle, the mutually tested electrical appliance load wiring of its B that is end-to-end terminal HeB; The rated current of B phase instrument transformer two primary currents three IbfB is a n ampere normalized current specification; Two winding one LbdC of C phase instrument transformer are coiling n circles on C phase current mutual inductor two LbC, its two windings of C phase instrument transformer, one binding post HbC that is end-to-end, and the rated current of C phase instrument transformer two primary currents one IbdC is 1 ampere of normalized current specification; Two winding two LaeC of C phase instrument transformer are coiling 1/5th n circles on A phase current mutual inductor two LbC; Its two windings of C phase instrument transformer, two binding post HdC that are end-to-end, the rated current of C phase instrument transformer two primary currents two IbeC is 5 amperes of normalized current specifications, two winding three LbfC of C phase instrument transformer are that in the through wires hole of A phase current mutual inductor two LbC, to pass be a circle; The mutually tested electrical appliance load wiring of its C that is end-to-end terminal HeC; The rated current of C phase instrument transformer two primary currents three IbfC is a n ampere normalized current specification, and A phase instrument transformer two secondary winding LbgA are connected protector amplifying circuit QB with B phase instrument transformer two secondary winding LbgB respectively with C phase instrument transformer two secondary winding LbgC, and A phase instrument transformer two secondary current IagA are relevant with protector amplifying circuit QB debugging with C phase instrument transformer two secondary current IbgC with B phase instrument transformer two secondary current IbgB; Every phase all has three specification current transformers of a secondary winding of three windings in the formation three-phase protective device Universal-current instrument transformer two; External three-phase conventional current instrument transformer secondary current is 1 ampere-hour two windings of A phase instrument transformer, the one binding post HbA that connects protector respectively and B two windings of instrument transformer, one binding post HbB and C two windings of instrument transformer, one binding post HbC mutually mutually, and external three-phase conventional current instrument transformer secondary current is 5 ampere-hours two windings of A phase instrument transformer, the two binding post HdA that connect protector respectively and B two windings of instrument transformer, two binding post HdB and C two windings of instrument transformer, two binding post HdC mutually mutually, when rated operational current is n ampere-hour two winding three LafA of A phase instrument transformer of being applied in protector respectively and B two winding three LafB of instrument transformer and C mutually in the feedthrough hole of two winding three LaeC of instrument transformer mutually; Three windings can not use simultaneously, can only select one of them for use.
Said protector Universal-current instrument transformer; Two winding one Lbd of instrument transformer coiling 4/5ths n circles on current transformer Lb that it is characterized in that single phasing protection device Universal-current instrument transformer two in the protector Universal-current instrument transformer are connected with 1/5th n circles of two winding two Lbe of instrument transformer and are equaled the n circle and become two winding one Lbd of instrument transformer; Two winding one LbdA of A phase instrument transformer of three-phase protective device Universal-current instrument transformer two and B two winding one LbdB of instrument transformer and C two winding one LbdC of instrument transformer mutually mutually in the protector Universal-current instrument transformer; On A phase current mutual inductor LbA coiling 4/5ths n circles again with A mutually 1/5th n circles series connection of two winding two LbeA of instrument transformer equal the n circle and become two winding one LbdA of A phase instrument transformer; On B phase current mutual inductor LbB coiling 4/5ths n circles again with B mutually 1/5th n circles series connection of two winding two LbeB of instrument transformer equal the n circle and become two winding one LbdB of B phase instrument transformer, on C phase current mutual inductor LbC coiling 4/5ths n circles again with C mutually 1/5th n circles series connection of two winding two LbeC of instrument transformer equal the n circle and become two winding one LbdC of C phase instrument transformer.
Protector Universal-current instrument transformer of the present invention is the current transformer that two or more windings and a secondary winding are arranged; Wherein winding of instrument transformer one matees external conventional current instrument transformer secondary standard current specification respectively with winding two of instrument transformer and selects for use for 1 ampere or 5 amperes, and is flexible and convenient to use.
Description of drawings
Fig. 1 single phasing protection device Universal-current instrument transformer one circuit theory sketch map
Fig. 2 single phasing protection device Universal-current instrument transformer two circuit theory sketch mapes
Fig. 3 three-phase protective device Universal-current instrument transformer one circuit theory sketch map
Fig. 4 three-phase protective device Universal-current instrument transformer two circuit theory sketch mapes
La current transformer one among Fig. 1, one windings one of Lad instrument transformer, one windings two of Lae instrument transformer, Laf instrument transformer one secondary winding, Iad instrument transformer one primary current one, Iae instrument transformer one primary current two, Iaf instrument transformer one secondary current, one winding one binding posts of Ha instrument transformer, the outside conventional instrument transformer secondary winding binding post of Hc, QB protector amplifying circuit;
Lb current transformer two among Fig. 2; Two windings one of Lbd instrument transformer; Two windings two of Lbe instrument transformer; Two windings three of Lbf instrument transformer; Lbg instrument transformer two secondary winding; Ibd instrument transformer two primary currents one; Ibe instrument transformer two primary currents two; Ibf instrument transformer two primary currents three; Ibg instrument transformer two secondary currents; Two winding one binding posts of Hb instrument transformer; Two winding two binding posts of Hd instrument transformer; The tested electrical appliance load wiring of He terminal; QB protector amplifying circuit;
LaA A phase current mutual inductor one among Fig. 3; LaB B phase current mutual inductor one; LaC C phase current mutual inductor one; LadA A phase instrument transformer is time winding one one by one; LaeA A phase instrument transformer is time winding two one by one; LagA A phase instrument transformer one secondary winding; IadA A phase instrument transformer is primary current one one by one; IaeA A phase instrument transformer is primary current two one by one; IagA A phase instrument transformer one secondary current; HaA A phase instrument transformer is time winding one binding post one by one; The mutually conventional instrument transformer secondary winding of the outside A of HcA binding post; LadB B phase instrument transformer is time winding one one by one; LaeB B phase instrument transformer is time winding two one by one; LagB B phase instrument transformer one secondary winding; IadB B phase instrument transformer is primary current one one by one; IaeB B phase instrument transformer is primary current two one by one; IagB B phase instrument transformer one secondary current; HaB B phase instrument transformer is time winding one binding post one by one; The mutually conventional instrument transformer secondary winding of the outside B of HcB binding post; LadC C phase instrument transformer is time winding one one by one; LaeC C phase instrument transformer is time winding two one by one; LagC C phase instrument transformer one secondary winding; IadC C phase instrument transformer is primary current one one by one; IaeCC phase instrument transformer is primary current two one by one; IagC C phase instrument transformer one secondary current; HaC C phase instrument transformer is time winding one binding post one by one; The mutually conventional instrument transformer secondary winding of the outside C of HcC binding post; QB protector amplifying circuit;
LbA A phase current mutual inductor two among Fig. 4; LbB B phase current mutual inductor two; LbC C phase current mutual inductor two; Two windings one of LbdA A phase instrument transformer; Two windings two of LbeA A phase instrument transformer; Two windings three of LbfA A phase instrument transformer; LbgA A phase instrument transformer two secondary winding; IbdA A phase instrument transformer two primary currents one; IbeA A phase instrument transformer two primary currents two; IbfA A phase instrument transformer two primary currents three; Two winding one binding posts of HbA A phase instrument transformer; Two winding two binding posts of HdA A phase instrument transformer; The mutually tested electrical appliance load wiring of HeA A terminal; Two windings one of LbdB B phase instrument transformer; Two windings two of LaeB B phase instrument transformer; Two windings three of LbfB B phase instrument transformer; LbgB B phase instrument transformer two secondary winding; IbdB B phase instrument transformer two primary currents one; IbeB B phase instrument transformer two primary currents two; IbfB B phase instrument transformer two primary currents three; Two winding one binding posts of HbBB phase instrument transformer; Two winding two binding posts of HdB B instrument transformer; The mutually tested electrical appliance load wiring of HeB B terminal; Two windings one of LbdC C phase instrument transformer; Two windings two of LbeC C phase instrument transformer; Two windings three of LbfC C phase instrument transformer; LbgC C phase instrument transformer two secondary winding; IbdC C phase instrument transformer two primary currents one; IbeC C phase instrument transformer two primary currents two; IbfC C phase instrument transformer two primary currents three; Two winding one binding posts of HbC C phase instrument transformer; Two winding two binding posts of HdCC instrument transformer; The mutually tested electrical appliance load wiring of HeC C terminal; QB protector amplifying circuit.
Embodiment
Fig. 1, Fig. 2, Fig. 3 and Fig. 4 structural principle are basic identical; Protector Universal-current instrument transformer is the current transformer that two or more windings and a secondary winding are arranged; Secondary current or secondary winding satisfy protector amplifying circuit QB requirement; The secondary winding open-loop voltage is greater than setting, and operation of current transformers electric current transformer iron core in the time of 1～10 times the magnetic saturation phenomenon should not occur, and the detection of electric current is unaffected when guaranteeing motor starting or stall.Fig. 1 is single phasing protection device Universal-current instrument transformer one a circuit theory sketch map; Current transformer one La has the current transformer of two windings and a secondary winding; One winding one Lad of instrument transformer are coiling five circles on current transformer one La; One windings of instrument transformer, one binding post Ha is end-to-end; The rated current of instrument transformer one primary current one Iad is 1 ampere of normalized current specification, and one winding two Lae of instrument transformer are that in the through wires hole of current transformer one La, to pass be a circle, and the rated current of instrument transformer one primary current two Iae is 5 amperes of normalized current specifications; Instrument transformer one secondary winding Laf connects protector amplifying circuit QB; Instrument transformer one secondary current Iaf is relevant with protector amplifying circuit QB debugging, as long as protector amplifying circuit QB debugging makes instrument transformer two primary currents, one Ibd or one of them adjustment of instrument transformer two primary currents two Ibe, 1 ampere, 5 amperes normalized current specifications can both reach requirement simultaneously; Constitute the dual gauge current transformer of a secondary winding of two windings; External conventional current instrument transformer secondary standard electric current is one windings of instrument transformer, the one binding post Ha that 1 ampere-hour connects protector, and external conventional current instrument transformer secondary standard electric current is applied in during for 5A in the feedthrough hole of one winding two Lae of instrument transformer of protector, and two windings can only be selected one of them for use.Fig. 2 is single phasing protection device Universal-current instrument transformer two circuit theory sketch mapes; Current transformer two Lb; Three windings and a secondary winding are arranged; Two winding one Lbd of instrument transformer are coiling n circles on current transformer two Lb; Two windings of instrument transformer, one binding post Hb is end-to-end; The rated current of instrument transformer two primary currents one Ibd is 1 ampere of normalized current specification, and two winding two Lbe of instrument transformer are coiling 1/5th n circles on current transformer two Lb, and two windings of instrument transformer, two binding post Hd are end-to-end; The rated current of instrument transformer two primary currents two Ibe is 5 amperes of normalized current specifications; Two winding three Lbf of instrument transformer are that in the through wires hole of current transformer two Lb, to pass be a circle, and the rated current of instrument transformer two primary currents three Ibf is the n ampere, and perhaps coiling 4/5ths n circles are connected with 1/5th n circles of two winding two Lbe of instrument transformer and equaled the n circle and become two winding one Lbd of instrument transformer on current transformer Lb; Can reduce cost; Instrument transformer two secondary winding Lbg connect protector amplifying circuit QB, and instrument transformer two secondary current Ibg are relevant with protector amplifying circuit QB debugging, as long as protector amplifying circuit QB debugging makes instrument transformer two primary currents, one Ibd or instrument transformer two primary currents, two Ibe or one of them adjustment of instrument transformer two primary currents three Ibf; 1 ampere, 5 amperes normalized current specifications and n ampere can both reach requirement simultaneously; Constitute three specification current transformers of a secondary winding of three windings, external conventional current instrument transformer secondary standard electric current is two windings of instrument transformer, the one binding post Hb that 1 ampere-hour connects protector, and external conventional current instrument transformer secondary standard electric current is two windings of instrument transformer, the two binding post Hd that 5 ampere-hours connect protector; Rated current is that three windings can only be selected one of them for use in the feedthrough hole of n ampere-hour two winding three Lbf of instrument transformer of directly being applied in protector.Fig. 3 is three-phase protective device Universal-current instrument transformer one a circuit theory sketch map; Form by identical A phase current mutual inductor one LaA of three performances and B phase current mutual inductor one LaB and C phase current mutual inductor one LaC; A phase current mutual inductor one LaA and B phase current mutual inductor one LaB and C phase current mutual inductor one LaC have two windings and a secondary winding respectively; A phase instrument transformer time winding one LadA one by one is coiling five circles on A phase current mutual inductor one LaA; The A phase of being end-to-end instrument transformer is time winding one binding post HaA one by one; A phase instrument transformer time winding two LaeA one by one is that in the through wires hole of A phase current mutual inductor one LaA, to pass be a circle, and A phase instrument transformer primary current one IadA one by one is 1 ampere of normalized current specification, and A phase instrument transformer primary current two IaeA one by one is 5 amperes of normalized current specifications; The structure of B phase current mutual inductor one LaB and C phase current mutual inductor one LaC is identical with A phase current mutual inductor one LaA with implementation method, and is also identical with single phasing protection device Universal-current instrument transformer one.
Fig. 4 is three-phase protective device Universal-current instrument transformer two circuit theory sketch mapes; Form by identical A phase current mutual inductor two LbA of three performances and B phase current mutual inductor two LbB and C phase current mutual inductor two LbC; A phase current mutual inductor two LbA and B phase current mutual inductor two LbB and C phase current mutual inductor two LbC have three windings and a secondary winding respectively; Two winding one LbdA of A phase instrument transformer are coiling n circles on A phase current mutual inductor two LbA; Two windings of A phase instrument transformer, the one binding post HbA that is end-to-end of two winding one LbdA of A phase instrument transformer; The rated current of instrument transformer two primary currents one IbdA is 1 ampere of normalized current specification; Two winding two LaeA of A phase instrument transformer are coiling 1/5th n circles on A phase current mutual inductor two LbA; Two windings of A phase instrument transformer, the two binding post HdA that are end-to-end of two winding two LbeA of A phase instrument transformer; The rated current of instrument transformer two primary currents two IbeA is 5 amperes of normalized current specifications; Two winding three LbfA of A phase instrument transformer are that in the through wires hole of A phase current mutual inductor two LbA, to pass be a circle, two windings of A phase instrument transformer, the three binding post HeA that are end-to-end of two winding three LbfA of A phase instrument transformer, and the rated current of instrument transformer two primary currents three IbfA is a n ampere normalized current specification; Perhaps coiling 4/5ths n circles are connected with 1/5th n circles of two winding two LbeA of instrument transformer and are equaled the n circle and become two winding one LbdA of instrument transformer on current transformer LbA; Can reduce cost, the structure of B phase current mutual inductor two LbB and C phase current mutual inductor two LbC is identical with A phase current mutual inductor two LbA with implementation method, and is also identical with single phasing protection device Universal-current instrument transformer two.
Claims (5)
1. protector Universal-current instrument transformer; Comprise single phasing protection device Universal-current instrument transformer one or single phasing protection device Universal-current instrument transformer two or three-phase protective device Universal-current instrument transformer one or three-phase protective device Universal-current instrument transformer two; It is characterized in that protector Universal-current instrument transformer is the current transformer that a secondary winding of two or more windings is arranged; The number of turn of a winding one is five times of relations of the number of turn of a winding two; Passing in the through wires hole of current transformer is that the standard current value of a circle is the number of turn value of a winding one, and the current transformer of a secondary winding of two windings is arranged, and a winding one is coiling five circles on current transformer; Winding two is that in the through wires hole of current transformer, to pass be a circle; Wherein winding of instrument transformer one matees external conventional current instrument transformer secondary standard current specification respectively with winding two of instrument transformer and selects for use for 1 ampere or 5 amperes, and single phasing protection device Universal-current instrument transformer one is by two windings and current transformer one La that secondary winding is formed in the protector Universal-current instrument transformer, and one winding one Lad of instrument transformer are coiling five circles on current transformer one La; Its one windings of instrument transformer, one binding post Ha that is end-to-end; Through its electric current is instrument transformer one primary current one Iad, and its rated current is 1 ampere of normalized current specification, and one winding two Lae of instrument transformer are that in the through wires hole of current transformer one La, to pass be a circle; Its outside conventional instrument transformer secondary winding binding post Hc that is end-to-end; Through its electric current is instrument transformer one primary current two Iae, and its rated current is 5 amperes of normalized current specifications, and instrument transformer one secondary winding Laf connects protector amplifying circuit QB; Constitute the dual gauge current transformer of a secondary winding of two windings; External conventional current instrument transformer secondary standard electric current is one windings of instrument transformer, the one binding post Ha that 1 ampere-hour connects protector, and external conventional current instrument transformer secondary standard electric current is applied in during for 5A in the feedthrough hole of one winding two Lae of instrument transformer of protector, and two windings can not use simultaneously; Can only select one of them for use, instrument transformer one secondary current Iaf is relevant with protector amplifying circuit QB debugging.
2. the said protector Universal-current of root a tree name claim 1 instrument transformer; It is characterized in that single phasing protection device Universal-current instrument transformer two is by three windings and current transformer two Lb that secondary winding is formed in the protector Universal-current instrument transformer; Two winding one Lbd of instrument transformer are coiling n circles on current transformer two Lb; Its two windings of instrument transformer, one binding post Hb that is end-to-end is instrument transformer two primary currents one Ibd through its electric current, and its rated current is 1 ampere of normalized current specification; Two winding two Lbe of instrument transformer are coiling 1/5th n circles on current transformer two Lb; Its two windings of instrument transformer, two binding post Hd that are end-to-end are instrument transformer two primary currents two Ibe through its electric current, and its rated current is 5 amperes of normalized current specifications; Two winding three Lbf of instrument transformer are that in the through wires hole of current transformer two Lb, to pass be a circle; Its tested electrical appliance load wiring terminal He that is end-to-end is instrument transformer two primary currents three Ibf through its electric current, and its rated current is the n ampere; Instrument transformer two secondary winding Lbg connect protector amplifying circuit QB; Constitute three specification current transformers of a secondary winding of three windings, external conventional current instrument transformer secondary standard electric current is two windings of instrument transformer, the one binding post Hb that 1 ampere-hour connects protector, and external conventional current instrument transformer secondary standard electric current is two windings of instrument transformer, the two binding post Hd that 5 ampere-hours connect protector; Rated current is in the feedthrough hole of n ampere-hour two winding three Lbf of instrument transformer of directly being applied in protector; Three windings can not use simultaneously, can only select one of them for use, and instrument transformer two secondary current Ibg are relevant with protector amplifying circuit QB debugging.
3. according to the said protector Universal-current of claim 1 instrument transformer; It is characterized in that three-phase protective device Universal-current instrument transformer one in the protector Universal-current instrument transformer is made up of identical A phase current mutual inductor one LaA of three performances and B phase current mutual inductor one LaB and C phase current mutual inductor one LaC; A phase current mutual inductor one LaA and B phase current mutual inductor one LaB and C phase current mutual inductor one LaC have two windings and a secondary winding respectively; A phase instrument transformer time winding one LadA one by one is coiling five circles on A phase current mutual inductor one LaA; Its A phase instrument transformer time winding one binding post HaA one by one that is end-to-end; A phase instrument transformer primary current one IadA one by one is 1 ampere of normalized current specification; A phase instrument transformer time winding two LaeA one by one is that in the through wires hole of A phase current mutual inductor one LaA, to pass be a circle; Its mutually conventional instrument transformer secondary winding of outside A binding post HcA that is end-to-end; A phase instrument transformer primary current two IaeA one by one is 5 amperes of normalized current specifications; B phase instrument transformer time winding one LadB one by one is coiling five circles on B phase current mutual inductor one LaB, its B phase instrument transformer time winding one binding post HaB one by one that is end-to-end, and B phase instrument transformer primary current one IadB one by one is 1 ampere of normalized current specification; B phase instrument transformer time winding two LaeB one by one is that in the through wires hole of B phase current mutual inductor one LaB, to pass be a circle; Its mutually conventional instrument transformer secondary winding of outside B binding post HcB that is end-to-end, B phase instrument transformer primary current two IaeB one by one is 5 amperes of normalized current specifications, C phase instrument transformer time winding one LadC one by one is coiling five circles on C phase current mutual inductor one LaC; Its C phase instrument transformer time winding one binding post HaC one by one that is end-to-end; C phase instrument transformer primary current one IadC one by one is 1 ampere of normalized current specification, and C phase instrument transformer time winding two LaeC one by one is that in the through wires hole of C phase current mutual inductor one LaC, to pass be a circle, its mutually conventional instrument transformer secondary winding of outside C binding post HcC that is end-to-end; C phase instrument transformer primary current two IaeC one by one is 5 amperes of normalized current specifications; A phase instrument transformer one secondary winding LagA is connected protector amplifying circuit QB with B phase instrument transformer one secondary winding LagB respectively with C phase instrument transformer one secondary winding LagC, and A phase instrument transformer one secondary current IagA is relevant with protector amplifying circuit QB debugging with C phase instrument transformer one secondary current IagC with B phase instrument transformer one secondary current IagB, and every phase all has the dual gauge current transformer of a secondary winding of two windings in the formation three-phase protective device Universal-current instrument transformer one; External three-phase conventional current instrument transformer secondary current is 1 ampere-hour one windings of A instrument transformer, the one binding post HaA that connects protector respectively and B instrument transformer time winding one binding post HaB and the C inferior one by one winding one binding post HaC of instrument transformer mutually one by one mutually; External three-phase conventional current instrument transformer secondary current be 5 ampere-hours be applied in protector respectively A phase instrument transformer one by one time winding two LaeA and B mutually instrument transformer one by one time winding two LaeB and C instrument transformer is one by one in the feedthrough hole of inferior winding two LaeC mutually, two windings can not use simultaneously, can only select one of them for use.
4. the said protector Universal-current of root a tree name claim 1 instrument transformer is characterized in that three-phase protective device Universal-current instrument transformer two is made up of identical A phase current mutual inductor two LbA of three performances and B phase current mutual inductor two LbB and C phase current mutual inductor two LbC, and A phase current mutual inductor two LbA and B phase current mutual inductor two LbB and C phase current mutual inductor two LbC have three windings and a secondary winding respectively; Two winding one LbdA of A phase instrument transformer are coiling n circles on A phase current mutual inductor two LbA, its two windings of A phase instrument transformer, one binding post HbA that is end-to-end; The rated current of A phase instrument transformer two primary currents one IbdA is 1 ampere of normalized current specification, and two winding two LaeA of A phase instrument transformer are coiling 1/5th n circles on A phase current mutual inductor two LbA, its two windings of A phase instrument transformer, two binding post HdA that are end-to-end; The rated current of A phase instrument transformer two primary currents two IbeA is 5 amperes of normalized current specifications; Two winding three LbfA of A phase instrument transformer are that in the through wires hole of A phase current mutual inductor two LbA, to pass be a circle, the mutually tested electrical appliance load wiring of its A that is end-to-end terminal HeA, and the rated current of A phase instrument transformer two primary currents three IbfA is a n ampere normalized current specification; Two winding one LbdB of B phase instrument transformer are coiling n circles on B phase current mutual inductor two LbB; Its two windings of B phase instrument transformer, one binding post HbB that is end-to-end, the rated current of B phase instrument transformer two primary currents one IbdB is 1 ampere of normalized current specification, two winding two LaeB of B phase instrument transformer are coiling 1/5th n circles on B phase current mutual inductor two LbB; Its two windings of B phase instrument transformer, two binding post HdB that are end-to-end; The rated current of B phase instrument transformer two primary currents two IbeB is 5 amperes of normalized current specifications, and two winding three LbfB of B phase instrument transformer are that in the through wires hole of B phase current mutual inductor two LbB, to pass be a circle, the mutually tested electrical appliance load wiring of its B that is end-to-end terminal HeB; The rated current of B phase instrument transformer two primary currents three IbfB is a n ampere normalized current specification; Two winding one LbdC of C phase instrument transformer are coiling n circles on C phase current mutual inductor two LbC, its two windings of C phase instrument transformer, one binding post HbC that is end-to-end, and the rated current of C phase instrument transformer two primary currents one IbdC is 1 ampere of normalized current specification; Two winding two LaeC of C phase instrument transformer are coiling 1/5th n circles on A phase current mutual inductor two LbC; Its two windings of C phase instrument transformer, two binding post HdC that are end-to-end, the rated current of C phase instrument transformer two primary currents two IbeC is 5 amperes of normalized current specifications, two winding three LbfC of C phase instrument transformer are that in the through wires hole of A phase current mutual inductor two LbC, to pass be a circle; The mutually tested electrical appliance load wiring of its C that is end-to-end terminal HeC; The rated current of C phase instrument transformer two primary currents three IbfC is a n ampere normalized current specification, and A phase instrument transformer two secondary winding LbgA are connected protector amplifying circuit QB with B phase instrument transformer two secondary winding LbgB respectively with C phase instrument transformer two secondary winding LbgC, and A phase instrument transformer two secondary current IagA are relevant with protector amplifying circuit QB debugging with C phase instrument transformer two secondary current IbgC with B phase instrument transformer two secondary current IbgB; Every phase all has three specification current transformers of a secondary winding of three windings in the formation three-phase protective device Universal-current instrument transformer two; External three-phase conventional current instrument transformer secondary current is 1 ampere-hour two windings of A phase instrument transformer, the one binding post HbA that connects protector respectively and B two windings of instrument transformer, one binding post HbB and C two windings of instrument transformer, one binding post HbC mutually mutually, and external three-phase conventional current instrument transformer secondary current is 5 ampere-hours two windings of A phase instrument transformer, the two binding post HdA that connect protector respectively and B two windings of instrument transformer, two binding post HdB and C two windings of instrument transformer, two binding post HdC mutually mutually, when rated operational current is n ampere-hour two winding three LafA of A phase instrument transformer of being applied in protector respectively and B winding three LafB of instrument transformer and C mutually in the feedthrough hole of two winding three LaeC of instrument transformer mutually; Three windings can not use simultaneously, can only select for use wherein individual one by one.
5. the said protector Universal-current of root a tree name claim 1 instrument transformer; Two winding one Lbd of instrument transformer coiling 4/5ths n circles on current transformer Lb that it is characterized in that single phasing protection device Universal-current instrument transformer two in the protector Universal-current instrument transformer are connected with 1/5th n circles of two winding two Lbe of instrument transformer and are equaled the n circle and become two winding one Lbd of instrument transformer; Two winding one LbdA of A phase instrument transformer of three-phase protective device Universal-current instrument transformer two and B two winding one LbdB of instrument transformer and C two winding one LbdC of instrument transformer mutually mutually in the protector Universal-current instrument transformer; On A phase current mutual inductor LbA coiling 4/5ths n circles again with A mutually 1/5th n circles series connection of two winding two LbeA of instrument transformer equal the n circle and become two winding one LbdA of A phase instrument transformer; On B phase current mutual inductor LbB coiling 4/5ths n circles again with B mutually 1/5th n circles series connection of two winding two LbeB of instrument transformer equal the n circle and become two winding one LbdB of B phase instrument transformer, on C phase current mutual inductor LbC coiling 4/5ths n circles again with C mutually 1/5th n circles series connection of two winding two LbeC of instrument transformer equal the n circle and become two winding one LbdC of C phase instrument transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202733111U CN202564051U (en) | 2012-06-01 | 2012-06-01 | Versatile current transformer of protector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012202733111U CN202564051U (en) | 2012-06-01 | 2012-06-01 | Versatile current transformer of protector |
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| CN202564051U true CN202564051U (en) | 2012-11-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751080A (en) * | 2012-06-01 | 2012-10-24 | 介国安 | Universal current transformer for protector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751080A (en) * | 2012-06-01 | 2012-10-24 | 介国安 | Universal current transformer for protector |
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