CN202840669U - Commercial power-generated power dual-power-supply automatic/hand-operated transition power supply circuit - Google Patents
Commercial power-generated power dual-power-supply automatic/hand-operated transition power supply circuit Download PDFInfo
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- CN202840669U CN202840669U CN 201220460484 CN201220460484U CN202840669U CN 202840669 U CN202840669 U CN 202840669U CN 201220460484 CN201220460484 CN 201220460484 CN 201220460484 U CN201220460484 U CN 201220460484U CN 202840669 U CN202840669 U CN 202840669U
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Abstract
The utility model discloses a commercial power-generated power dual-power-supply automatic/hand-operated transition power supply circuit. The circuit comprises a commercial power supply main loop, a commercial power voltage sampling-controlling circuit, a generated power supply main loop, and a generated power voltage sampling-controlling circuit. An output end of the commercial power voltage sampling-controlling circuit serves to provide operational power supply for electric control of a commercial power supply draw-out type frame breaker (QF1). An output end of the generated power voltage sampling-controlling circuit serves to provide operational power supply for electric control of a generated power supply draw-out type frame breaker (QF2). An output end of the power supply main loop of the commercial power draw-out type frame breaker (QF1) and an output end of the power supply main loop of the generated power draw-out type frame breaker (QF2) are integrated and then provide loads with power in a hand-operated or automatic manner. Under a fault state that commercial power and generated power exist simultaneously, the commercial power-generated power dual-power-supply automatic transition power supply circuit gives priority to the commercial power for supplying the loads with power. According to the utility model, power supply open-phase protection and breaker time-delay closing time arrangements are applied to the whole commercial power-generated power dual power supply automatic transition process, thereby being beneficial for improving the power supply quality.
Description
Technical field
This practicality relates to the control circuit of low voltage switchgear, particularly a kind of low pressure civil power-generating duplicate supply automatic/hand conversion power supply circuits.
Background technology
At present, automatically change the switchgear of power supply as low pressure civil power-generating duplicate supply, be widely used as doing in the circuit of 0.4/0.23KV important load and do not allow the essential equipment that cuts off the power supply, automatically change with the power supply of finishing civil power-generating dual power supply system, thereby guarantee the responsible consumer power supply reliability.And the core of the power automatic transfer switch cabinet of civil power-generating dual power supply system is voltage sample-control circuit.Traditional voltage sample loop does not possess the three-phase lack phase measuring ability, and when three-phase lack phase occured in power supply process for civil power or generating, what load was accepted also was the three-phase lack phase power supply.Its power supply quality is relatively poor.
The utility model content
For overcoming the deficiencies in the prior art, the utility model provides a kind of technical scheme:
A kind of civil power-generating duplicate supply automatic/hand conversion power supply circuits comprises: line voltage sampling-control circuit and generating voltage sampling-control circuit; The mains-supplied major loop, the generating main circuit power supply; Described line voltage sampling-control circuit and generating voltage sampling-control circuit are provided with shared mechanical interlocking device; The electrical interlocks loop; The output of line voltage sampling-control circuit is as the electrically operated operating power of civil power pull-out type frame circuit breaker; The output of generating voltage sampling-control circuit is as the electrically operated operating power of generating pull-out type frame circuit breaker; After merging, the output of the main circuit power supply of the output of the main circuit power supply of the civil power pull-out type frame circuit breaker that line voltage sampling-control circuit is controlled and the generating pull-out type frame circuit breaker that generating voltage sampling-control circuit is controlled under the effect of electro-machanical interlock, powers manually or automatically to load; It is lower to nonserviceable, and when civil power all existed with generating, civil power-generating duplicate supply was automatically changed power supply circuits and guaranteed that preferentially civil power is to the load power supply.
Further, described line voltage sampling-control circuit comprises: the first fuse FU1, the second fuse FU2, the 3rd fuse FU3, the first A.C. contactor KM1, the first intermediate relay ZJ 1, the second intermediate relay ZJ 2, the first miniature circuit breaker QA1, manual/auto change over switch ZK1, the first shift knob SB1, second switch button SB2, very first time relay K T1, civil power circuit breaker Q F1 and auxiliary contact thereof; The first combined floodgate indicator light HR1, the first separating brake indicator light HG1, generator starting contact (auxiliary contact of KM1).
The phase line of the three-phase and four-line electricity of civil power is accessed respectively in the end of incoming cables separately of described the first fuse FU1, the second fuse FU2, the 3rd fuse FU3; The leading-out terminal separately of the first fuse FU1, the second fuse FU2, the 3rd fuse FU3 links to each other with an end of the first intermediate relay ZJ 1, the second intermediate relay ZJ 2, the first A.C. contactor KM1 coil respectively; The other end of access the first A.C. contactor KM1 coil after the auxiliary normally opened contact series connection of the auxiliary normally opened contact of the first intermediate relay ZJ 1, the second intermediate relay ZJ 2, the main contacts of the first A.C. contactor KM1 also accesses the leading-out terminal of the first fuse FU1, civil power zero line N output connects an end of another main contacts of the first A.C. contactor KM1, and the connection of so far finishing the line voltage sampling circuit is connected with the output of pull-out type frame circuit breaker QF1 electric operating power supply.
The other end of the main contacts of the first A.C. contactor KM1 connects the end of incoming cables of the first miniature circuit breaker QA1, the leading-out terminal of the first miniature circuit breaker QA1 connects the end of incoming cables of manual/auto change over switch ZK1 part contact wherein, and the leading-out terminal of the part contact of manual/auto change over switch ZK1 connects the part auxiliary contact of civil power pull-out type frame circuit breaker QF1 by the first shift knob SB1, second switch button SB2; The leading-out terminal of the first miniature circuit breaker QA1 also connects the intelligent processing unit of civil power pull-out type frame circuit breaker QF1; The leading-out terminal of the first miniature circuit breaker QA1 also connects civil power pull-out type frame circuit breaker QF1 part auxiliary contact; The leading-out terminal of the part contact of manual/auto change over switch ZK1 also contact the part auxiliary contact of the first A.C. contactor KM1 and the part auxiliary contact of civil power pull-out type frame circuit breaker QF1, an end of the coil of very first time relay K T1; The other end of another main contacts of the first A.C. contactor KM1 connects another end of incoming cables of the first miniature circuit breaker QA1, its leading-out terminal connects respectively the intelligent processing unit of civil power pull-out type frame circuit breaker QF1, auxiliary contact, the first combined floodgate indicator light HR1, the first separating brake indicator light HG1, an end of very first time relay K T1 coil.In this circuit, the auxiliary contact of the generating pull-out type frame circuit breaker QF2 of the closing coil X1 of civil power pull-out type frame circuit breaker QF1 series connection are used as interlocked (being the electrical interlock effect) in circuit.Thereby finish the connection of civil power pull-out type frame circuit breaker QF1 electric operating operating power input-control circuit.
Further: described generating voltage sampling-control circuit comprises: the normally closed auxiliary contact of the 4th fuse FU4, the 5th fuse FU5, the 6th fuse FU6, the second A.C. contactor KM2, the 3rd intermediate relay ZJ 3, the 4th intermediate relay ZJ 4, the first A.C. contactor KM1, the second miniature circuit breaker QA2, manual/auto change over switch ZK1, the 3rd shift knob SB3, the 4th shift knob SB4, the second time relay KT2, generating circuit breaker Q F2 and auxiliary contact thereof; The second combined floodgate indicator light HR2, the second separating brake indicator light HG2.
The phase line of the three-phase and four-line electricity of generating is accessed respectively in the end of incoming cables separately of described the 4th fuse FU4, the 5th fuse FU5, the 6th fuse FU6; The leading-out terminal separately of the 4th fuse FU4, the 5th fuse FU5, the 6th fuse FU6 links to each other with an end of the 3rd intermediate relay ZJ 3, the 4th intermediate relay ZJ 4, the second A.C. contactor KM2 coil respectively; The auxiliary normally opened contact of the auxiliary normally opened contact of the 3rd intermediate relay ZJ 3, the 4th intermediate relay ZJ 4, the other end of access the second A.C. contactor KM2 coil after the normally closed auxiliary contact series connection of the first A.C. contactor KM1, the main contacts of the second A.C. contactor KM2 also accesses the leading-out terminal of the 4th fuse FU4, generating zero line N output connects an end of another main contacts of the second A.C. contactor KM2, and the connection of so far finishing the generating voltage sampling circuit is connected with the output of pull-out type frame circuit breaker QF2 electric operating power supply.
The other end of the main contacts of the second A.C. contactor KM2 connects the end of incoming cables of the second miniature circuit breaker QA2, the leading-out terminal of the second miniature circuit breaker QA2 connects the end of incoming cables of manual/auto change over switch ZK1 part contact wherein, and the leading-out terminal of the part contact of manual/auto change over switch ZK1 connects the part auxiliary contact of generating circuit breaker Q F2 by the 3rd shift knob SB3, the 4th shift knob SB4; The leading-out terminal of the second miniature circuit breaker QA2 also connects the intelligent processing unit of generating circuit breaker Q F2; The leading-out terminal of the second miniature circuit breaker QA2 also connects generating circuit breaker Q F2 part auxiliary contact; The leading-out terminal of the part contact of manual/auto change over switch ZK1 also contact the part auxiliary contact of the second A.C. contactor KM2 and the part auxiliary contact of generating circuit breaker Q F2, an end of the coil of the second time relay KT2; The other end of another main contacts of the second A.C. contactor KM2 connects another end of incoming cables of the second miniature circuit breaker QA2, its leading-out terminal connects respectively the intelligent processing unit of generating circuit breaker Q F2, auxiliary contact, the second combined floodgate indicator light HR2, the second separating brake indicator light HG2, an end of the second time relay KT2 coil.In this circuit, the auxiliary contact QF1 of the civil power circuit breaker Q F1 of the closing coil X2 series connection of generating circuit breaker Q F2 is used as interlocked (being the electrical interlock effect) in circuit; The normally closed auxiliary contact of the first A.C. contactor KM1 is introduced in the wire loop of the second A.C. contactor KM2, not only preferentially guaranteed civil power to the load power supply, and in circuit, be used as interlocked.So far finish the connection of sending out circuit breaker Q F2 electric operating operating power input-control circuit.
Be compared with existing technology; the utility model applies to power phase shortage protection and circuit breaker time-delay closing set of time in whole civil power-automatic transfer process of generating dual power supply; detection to power supply has new expansion with monitoring, is conducive to improve the arch electricity quality.
Description of drawings
Fig. 1 is low-voltage distribution system figure of the present utility model;
Fig. 2 is civil power-generating duplicate supply automatic/hand change-over circuit.
Embodiment
With reference to the dry-type transformer of 1, one 400KVA of figure, the high-pressure side primary voltage is 10KV, and low-pressure end outlet voltage is 0.4/0.23KV; High-pressure side adopts delta connection, and low-pressure end adopts the star-connection method, and neutral point is by the direct ground connection of earth electrode.The low-voltage output of dry-type transformer is connected to the end of incoming cables (this is civil power) of frame circuit breaker QF1 (W1-2000/4P) by the busbar that confluxes.The leading-out terminal of generator is connected to the end of incoming cables (this is generating) of frame circuit breaker QF2 (W2-2000/4P) by low-voltage cable.The leading-out terminal of the leading-out terminal of frame circuit breaker QF1 and frame circuit breaker QF2 merges backward load power supply, owing to be provided with the electro-machanical interlock, therefore civil power and generating can only the power supplies of road direction load under any state.The measurement of correlation of joining again, the control components and parts realize that civil power-manual/auto conversion of generating duplicate supply is to the load power supply.
With reference to figure 2, Fig. 2 is civil power-generating duplicate supply automatic/hand change-over circuit, comprising: line voltage sampling-control circuit and generating voltage sampling-control circuit.Line voltage sampling-control circuit the course of work: take from the conflux three-phase and four-line of busbar of civil power low pressure: 1L11,1L21,1L31, N1; 1L11,1L21,1L31 is connected to respectively the first fuse FU1, the second fuse FU2, the 3rd fuse FU3 end of incoming cables separately, the first fuse FU1, the second fuse FU2, the 3rd fuse FU3 three's leading-out terminal respectively be connected relay ZJ1, the second relay ZJ2, the first A.C. contactor KM1 end of incoming cables and connect.Fuse is done short circuit and overload protection in circuit.
The connection of line voltage sampling-control circuit: the first relay ZJ1, the be in series end of coil of rear access the first A.C. contactor KM1 of the auxiliary normally opened contact of the second relay ZJ2, the other end of the coil of the first A.C. contactor KM1 accesses the tie point between the first relay ZJ1, the second relay ZJ2.The leading-out terminal of a main contacts end of incoming cables (often opening) access the first fuse FU1 of the first A.C. contactor KM1, another main contacts end of incoming cables (often opening) access N1.The main contacts of the first A.C. contactor KM1 is interlock, the end of incoming cables of its a main contacts leading-out terminal (often opening) access the first miniature circuit breaker QA1, the another one access point of another main contacts leading-out terminal (often opening) access the first miniature circuit breaker QA1 is so far finished the connection of line voltage sampling-control circuit.
Take from generating low pressure busbar (three-phase and four-line) 2L11 that confluxes, 2L21,2L31 is connected to respectively the 4th fuse FU4, the 5th FU5, the end of incoming cables of the 6th fuse FU6, the 4th fuse FU4, the 5th fuse FU5, the leading-out terminal of the 6th fuse FU6 access respectively the 3rd relay ZJ3, the 4th relay ZJ4, the second A.C. contactor KM2 end of incoming cables separately; The coil other end of the second A.C. contactor KM2 accesses the tie point of the 3rd relay ZJ3, the 4th relay ZJ4; The leading-out terminal of a main contacts end of incoming cables (often opening) access the 4th fuse FU4 of the second A.C. contactor KM2; The be in series other end of coil of rear access the second A.C. contactor KM2 of the auxiliary normally opened contact of the 3rd relay ZJ3, the 4th relay ZJ4 and the normally closed auxiliary contact of the first A.C. contactor KM1, the output of a main contacts end of incoming cables (often opening) access the 4th fuse FU4 of the second A.C. contactor KM2, another main contacts end of incoming cables (often opening) access N2.The main contacts of the second A.C. contactor KM2 is interlock, the contact of its a main contacts leading-out terminal (often opening) access the second miniature circuit breaker QA2, the another one contact of another main contacts leading-out terminal (often opening) access the second miniature circuit breaker QA2.So far finish the connection of generating voltage sampling and operating power circuit.
With reference to figure 2, when by mains-supplied, the coil of the first intermediate relay ZJ 1, the second intermediate relay ZJ 2 gets electric adhesive, the first intermediate relay ZJ 1, the auxiliary normally opened contact of the second intermediate relay ZJ 2 by often open become normally closed, then the coil of the first A.C. contactor KM1 gets electric adhesive, and the first A.C. contactor KM1 often opens the main contacts closure, and circuit is connected, for the breaking-closing operating of civil power pull-out type frame circuit breaker QF1 provides power supply, finishing simultaneously the civil power three-phase and four-line has no-voltage sampling.If in by the mains-supplied process, power supply generation open-phase fault or during accidental power failure, then the coil of the first A.C. contactor KM1 all must not electric adhesive, civil power also just can not provide the operating power of civil power pull-out type frame circuit breaker QF1, the no-voltage release Q1 of civil power pull-out type frame circuit breaker QF1 will move, civil power pull-out type frame circuit breaker QF1 separating brake disconnects the mains-supplied loop.The auxiliary normally-closed contact of the first A.C. contactor KM1 is connected simultaneously, then generator is accepted this signal, the generator starting generating, the 3rd relay ZJ3 then, the coil of the 4th relay ZJ4 gets electric, the 3rd relay ZJ3, the auxiliary normally opened contact of the 4th relay ZJ4 by often open become normally closed, then the coil of the second A.C. contactor KM2 gets electric adhesive, the main contacts of the second A.C. contactor KM2 (the normal battle) closure, because the coil of the first A.C. contactor KM1 must not be electric, the normally closed point of the auxiliary contact of the first A.C. contactor KM1 is closed, and normal battle of the main contacts of the first A.C. contactor KM1 disconnects, so the second A.C. contactor KM2 connects, then circuit is connected, and for the breaking-closing operating of generating pull-out type frame circuit breaker QF2 provides power supply, finishing simultaneously generating three-phase four lines has no-voltage sampling.So far finish the automatic conversion by civil power-generating power supply.
The principle of the preferential power supply of civil power: when by generator powered, civil power arrives, then the first intermediate relay ZJ 1, the second intermediate relay ZJ 2, the first A.C. contactor KM1 in succession electric.The coil adhesive of the first A.C. contactor KM1, its master touches normal the battle and connects, auxiliary tactile normally closed point disconnects, the no-voltage release (Q2) of drawout breaker QF2 of generating electricity simultaneously changes the temporary transient dead electricity separating brake of electricity because of operating power, the auxiliary normally closed point of the first A.C. contactor KM1 disconnects, generator quits work, and so far finishes the automatic conversion of generating-mains-supplied.As long as the first A.C. contactor KM1 can detect civil power electricity is arranged, then civil power is preferably the load power supply.
Manual operation: when by mains-supplied, change over switch ZK1 is rotated to manual position, 5-6,7-8 connects respectively, the energy storage motor M1 energy storage of civil power pull-out type frame circuit breaker QF1, if first by the first shift knob SB1, then civil power pull-out type frame circuit breaker QF1 closes a floodgate, and presses then separating brake of second switch button SB2; If behind the civil power breaker closing, again by the 3rd shift knob SB3, the pull-out type frame circuit breaker QF2 that then generates electricity can not close a floodgate, QF1 closes a floodgate because of civil power pull-out type frame circuit breaker, its auxiliary contact in Fig. 2 disconnect, the closing circuit of generating pull-out type frame circuit breaker QF2 is also because closing a floodgate without operating power, the mechanical interlocks of civil power pull-out type frame circuit breaker QF1 and generating pull-out type frame circuit breaker QF2 also only allows civil power pull-out type frame circuit breaker QF1 to close a floodgate and generating pull-out type frame circuit breaker QF2 separating brake simultaneously, and load is by mains-supplied; If first by the 3rd shift knob SB3, the pull-out type frame circuit breaker QF2 that then generates electricity can not close a floodgate, because of the generating circuit breaker without operating power.When by when power supply generating, its manual operation principle be the same by mains-supplied manual operation principle.
Automatic operation: when by mains-supplied, change over switch ZK1 is rotated to automated location, 1-2,3-4 connects respectively, the M1 energy storage of civil power pull-out type frame circuit breaker QF1, because the first A.C. contactor KM1 gets electric, the second A.C. contactor KM2 must not be electric, the auxiliary normally opened contact of the first A.C. contactor KM1 is closed, because civil power pull-out type frame circuit breaker QF1 is separating brake, so the auxiliary normally closed point of pull-out type frame circuit breaker QF1 is closed, then the coil of very first time relay K T1 gets electric adhesive, 5 seconds (adjustable 0-30 of its time) closures of the auxiliary normally opened contact time-delay of very first time relay K T1, civil power pull-out type frame circuit breaker QF1 automatic closing; And because the second A.C. contactor KM2 coil must not be electric, it is electric that the second time relay KT2 coil can not get yet, and the auxiliary normally opened contact of the second time relay KT2 also just can be closed, and generating pull-out type frame circuit breaker QF2 just can not close a floodgate yet.When civil power phase shortage or fault outage, by the generating power supply, change over switch ZK1 is at automated location, 1-2,3-4 connects respectively, energy storage motor M2 energy storage among the generating pull-out type frame circuit breaker QF2, because the second A.C. contactor KM2 coil gets electric, the coil of the first A.C. contactor KM1 must not be electric, civil power pull-out type frame circuit breaker QF1 is separating brake (the no-voltage release Q1 of civil power pull-out type frame circuit breaker QF1 made QF1 become separating brake by combined floodgate because changing the temporary transient dead electricity of electricity in being changed by civil power-generating), so the auxiliary normally closed point of civil power pull-out type frame circuit breaker QF1 is closed, the coil of the first A.C. contactor KM1 must not be electric, the auxiliary normally opened contact of the first A.C. contactor KM1 namely disconnects, so the coil of very first time relay K T1 just must not electricity, civil power pull-out type frame circuit breaker QF1 just can automatic closing yet; Because the KM2 coil gets electric, then the auxiliary normally opened contact of the second A.C. contactor KM2 among Fig. 2 is closed, generating pull-out type frame circuit breaker QF2 is separating brake, the auxiliary contact of generating circuit breaker Q F2 are closed, then the coil of the second time relay KT2 gets electric adhesive, 10 seconds (adjustable 0-30 of its time) closures of the auxiliary normally opened contact time-delay of the second time relay KT2, generating pull-out type frame circuit breaker QF2 automatic closing.The second time relay KT2 time-delay closing time was set as 10 seconds, the first has the time enough separating brake for civil power pull-out type frame circuit breaker QF1 in civil power-generating transfer process, even it is two at the first A.C. contactor KM1, the second A.C. contactor KM2 coil simultaneously electric adhesive, its auxiliary normally opened contact time of very first time relay K T1 timing closing short (5 seconds), its auxiliary normally opened contact time of the second time relay KT2 timing closing long (10 seconds), circuit breaker Q F2 is closed thereby civil power pull-out type frame circuit breaker QF1 preferentially generates electricity.Do so not only preferential assurance and powered to load by civil power, and assurance civil power-generating can not powered to load the same period.So far finish the automatic conversion in civil power-generating dual power supply loop.When civil power comes temporarily again, the coil of the first A.C. contactor KM1 gets electric adhesive, its the main contacts closure of often making war, auxiliary normally-closed contact disconnects, disconnection provides operating power by generating to circuit breaker, connection provides operating power by civil power to circuit breaker, makes generating pull-out type frame circuit breaker QF2 become separating brake by combined floodgate in the no-voltage release Q2 of this pull-out type frame circuit breaker QF2 that generates electricity simultaneously because changing the temporary transient dead electricity of electricity, disconnects generating to the load power supply.Action subsequently repeats by the process of civil power to the load power supply.
Key point of the present utility model is: power phase shortage protection and circuit breaker time-delay closing set of time are applied in whole civil power-automatic transfer process of generating dual power supply; detection to power supply has new expansion with monitoring; be conducive to improve the arch electricity quality, for Very Important Person provides better service.Other overload long delay inverse time lag, the short time delay inverse time lag, specified time, Shun moves function, and the one-phase ground protection function is finished by circuit breaker.
Claims (3)
1. civil power-generating duplicate supply automatic/hand conversion power supply circuits is characterized in that, comprising: mains-supplied major loop, line voltage sampling-control circuit, generating main circuit power supply, generating voltage sampling-control circuit; Line voltage sampling-control circuit comprises civil power pull-out type frame circuit breaker (QF1), and generating voltage sampling-control circuit comprises generating pull-out type frame circuit breaker (QF2); Line voltage sampling-control circuit and generating voltage sampling-control circuit are provided with shared mechanical interlocking device and electrical interlocks element; The output of line voltage sampling-control circuit is as the electrically operated operating power of city's electrical circuit breakers (QF1), and the output of generating voltage sampling-control circuit is the electrically operated operating power of generating circuit breaker (QF2); After merging, the power supply output of the power supply output of the civil power pull-out type frame circuit breaker (QF1) that line voltage sampling-control circuit is controlled and the generating pull-out type frame circuit breaker (QF2) that generating voltage sampling-control circuit is controlled under the effect of electro-machanical interlock, powers manually or automatically to load; It is lower to nonserviceable, and when civil power all existed with generating, civil power-generating duplicate supply was automatically changed power supply circuits and guaranteed that preferentially civil power is to the load power supply.
2. civil power according to claim 1-generating duplicate supply automatic/hand is changed power supply circuits, and it is characterized in that: described line voltage sampling-control circuit comprises: the first fuse (FU1), the second fuse (FU2), the 3rd fuse (FU3), the first A.C. contactor (KM1), the first auxiliary relay (ZJ1), the second auxiliary relay (ZJ2), the first miniature circuit breaker (QA1), manual/auto change over switch (ZK1), the first shift knob (SB1), second switch button (SB2), very first time relay (KT1), the first combined floodgate indicator light (HR1), the first separating brake indicator light (HG1), generator starting contact (auxiliary contact of KM1);
The phase line of the three-phase and four-line electricity of civil power is accessed respectively in the end of incoming cables separately of described the first fuse (FU1), the second fuse (FU2), the 3rd fuse (FU3); The leading-out terminal separately of the first fuse (FU1), the second fuse (FU2), the 3rd fuse (FU3) links to each other with an end of the first auxiliary relay (ZJ1), the second auxiliary relay (ZJ2), the first A.C. contactor (KM1) coil respectively; The other end of access the first A.C. contactor (KM1) coil after the auxiliary normally opened contact series connection of the auxiliary normally opened contact of the first auxiliary relay (ZJ1), the second auxiliary relay (ZJ2), a main contacts of the first A.C. contactor (KM1) also accesses the leading-out terminal of the first fuse (FU1), civil power zero line N output connects an end of another main contacts of the first A.C. contactor (KM1), and the connection of so far finishing the line voltage sampling circuit is connected with the output of pull-out type frame circuit breaker (QF1) electric operating power supply;
The other end of the main contacts of the first A.C. contactor (KM1) connects the end of incoming cables of the first miniature circuit breaker (QA1), the leading-out terminal of the first miniature circuit breaker (QA1) connects the end of incoming cables of manual/auto change over switch (ZK1) part contact wherein, and the leading-out terminal of the part contact of manual/auto change over switch (ZK1) connects the part auxiliary contact of civil power pull-out type frame circuit breaker (QF1) by the first shift knob (SB1), second switch button (SB2); The leading-out terminal of the first miniature circuit breaker (QA1) also connects the intelligent processing unit of civil power pull-out type frame circuit breaker (QF1); The leading-out terminal of the first miniature circuit breaker (QA1) also connects city's electrical circuit breakers (QF1) part auxiliary contact; The leading-out terminal of the part contact of manual/auto change over switch (ZK1) also contact the part auxiliary contact of the first A.C. contactor (KM1) and the part auxiliary contact of civil power pull-out type frame circuit breaker (QF1), an end of the coil of very first time relay (KT1); The other end of another main contacts of the first A.C. contactor (KM1) connects another end of incoming cables of the first miniature circuit breaker (QA1), its leading-out terminal connects respectively the intelligent processing unit of civil power pull-out type frame circuit breaker (QF1) and auxiliary contact, the first combined floodgate indicator light (HR1), the first separating brake indicator light (HG1), an end of very first time relay (KT1) coil; The auxiliary contact of closing coil (X1) the series connection generating pull-out type frame circuit breaker (QF2) of civil power pull-out type frame circuit breaker (QF1), in circuit, do the electrical interlock effect, so far finish being connected of civil power pull-out type frame circuit breaker (QF1) electric operating and generating voltage sampling-control circuit.
3. civil power according to claim 1-generating duplicate supply automatic/hand is changed power supply circuits, it is characterized in that: described generating voltage sampling-control circuit comprises: the 4th fuse (FU4), the 5th fuse (FU5), the 6th fuse (FU6), the second A.C. contactor (KM2), the 3rd auxiliary relay (ZJ3), the 4th auxiliary relay (ZJ4), the normally closed auxiliary contact of the first A.C. contactor (KM1), the second miniature circuit breaker (QA2), manual/auto change over switch (ZK1), the 3rd shift knob (SB3), the 4th shift knob (SB4), second time relay (KT2), the second combined floodgate indicator light (HR2), the second separating brake indicator light (HG2);
The phase line of the three-phase and four-line electricity of generating is accessed respectively in the end of incoming cables separately of described the 4th fuse (FU4), the 5th fuse (FU5), the 6th fuse (FU6); The leading-out terminal separately of the 4th fuse (FU4), the 5th fuse (FU5), the 6th fuse (FU6) links to each other with an end of the 3rd auxiliary relay (ZJ3), the 4th auxiliary relay (ZJ4), the second A.C. contactor (KM2) coil respectively; The auxiliary normally opened contact of the 3rd auxiliary relay (ZJ3), the auxiliary normally opened contact of the 4th auxiliary relay (ZJ4), the other end of access the second A.C. contactor (KM2) coil after the normally closed auxiliary contact series connection of the first A.C. contactor (KM1), a main contacts of the second A.C. contactor (KM2) also accesses the leading-out terminal of the 4th fuse (FU4), generating zero line N output connects an end of another main contacts of the second A.C. contactor (KM2), and the connection of so far finishing the generating voltage sampling circuit is connected with the output of pull-out type frame circuit breaker (QF2) electric operating power supply;
The other end of the main contacts of the second A.C. contactor (KM2) connects the end of incoming cables of the second miniature circuit breaker (QA2), the leading-out terminal of the second miniature circuit breaker (QA2) connects the end of incoming cables of manual/auto change over switch (ZK1) part contact wherein, and the leading-out terminal of the part contact of manual/auto change over switch (ZK1) connects the part auxiliary contact of generating pull-out type frame circuit breaker (QF2) by the 3rd shift knob (SB3), the 4th shift knob (SB4); The leading-out terminal of the second miniature circuit breaker (QA2) also connects the intelligent processing unit of generating pull-out type frame circuit breaker (QF2); The leading-out terminal of the second miniature circuit breaker (QA2) also connects generating pull-out type frame circuit breaker (QF2) part auxiliary contact; The leading-out terminal of the part contact of manual/auto change over switch (ZK1) also connects the end of coil of part auxiliary contact, second time relay (KT2) of part auxiliary contact, the generating circuit breaker (QF2) of the second A.C. contactor (KM2); The other end of another main contacts of the second A.C. contactor (KM2) connects another end of incoming cables of the second miniature circuit breaker (QA2), its leading-out terminal connects respectively intelligent processing unit and the auxiliary contact, the second combined floodgate indicator light (HR2), the second separating brake indicator light (HG2) of generating pull-out type frame circuit breaker (QF2), an end of second time relay (KT2); The auxiliary contact of the civil power pull-out type frame circuit breaker (QF1) of closing coil (X2) series connection of generating pull-out type frame circuit breaker (QF2), in circuit, do the electrical interlock effect, so far finish the connection of generating pull-out type frame circuit breaker (QF2) electric operating operating power input-control circuit.
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| CN 201220460484 CN202840669U (en) | 2012-09-11 | 2012-09-11 | Commercial power-generated power dual-power-supply automatic/hand-operated transition power supply circuit |
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| CN 201220460484 CN202840669U (en) | 2012-09-11 | 2012-09-11 | Commercial power-generated power dual-power-supply automatic/hand-operated transition power supply circuit |
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| CN103762716A (en) * | 2014-01-24 | 2014-04-30 | 中山市明阳电器有限公司 | Auto-putting-in and auto-recovering power supply system |
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| CN108649688B (en) * | 2018-06-15 | 2023-08-04 | 甘肃酒钢集团宏兴钢铁股份有限公司 | External bypass switching device of UPS |
| CN109441650A (en) * | 2018-11-14 | 2019-03-08 | 中铁十七局集团第工程有限公司 | A kind of applicable high methane tunnel is uninterruptedly from opening pressure stabilizing power supply ventilated control system |
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| CN112994222A (en) * | 2021-05-18 | 2021-06-18 | 泰豪科技股份有限公司 | ATS switch control circuit and control method |
| CN113489053A (en) * | 2021-06-18 | 2021-10-08 | 广西玉柴机器股份有限公司 | Control method of ATS control cabinet of diesel power generation power assembly |
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