CN202435122U - Two-path power supply circuit - Google Patents

Two-path power supply circuit Download PDF

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Publication number
CN202435122U
CN202435122U CN2011205172260U CN201120517226U CN202435122U CN 202435122 U CN202435122 U CN 202435122U CN 2011205172260 U CN2011205172260 U CN 2011205172260U CN 201120517226 U CN201120517226 U CN 201120517226U CN 202435122 U CN202435122 U CN 202435122U
Authority
CN
China
Prior art keywords
contactors
power supply
circuit
time relay
supply circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011205172260U
Other languages
Chinese (zh)
Inventor
宋岩峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LUOYANG HUANCHENG POWER SUPPLY BUREAU
Original Assignee
LUOYANG HUANCHENG POWER SUPPLY BUREAU
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LUOYANG HUANCHENG POWER SUPPLY BUREAU filed Critical LUOYANG HUANCHENG POWER SUPPLY BUREAU
Priority to CN2011205172260U priority Critical patent/CN202435122U/en
Application granted granted Critical
Publication of CN202435122U publication Critical patent/CN202435122U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a two-path power supply circuit, which comprises two contactors, two circuit breakers and a time relay, wherein the two contactors are interlocked through a normally closed auxiliary contact; the two circuit breakers are connected in series with coils of the two contactors respectively; and a normally open contact of the time relay is connected in series with the coil of one contactor. The two contactors are interlocked, so that only one power supply line supplies power to a load each time, and the damage of misoperation to the load is avoided; the circuit breakers are connected in series with the coils of the two contactors respectively, and whether two power supply circuits are automatically switched or not can be controlled, so that special requirements are met; in addition, when the two circuit breakers are turned on, a power supply circuit which is turned-on at first is preferably used for supplying the power; and by the time relay, an automatic switching time interval can be controlled.

Description

A kind of duplicate supply circuit
Technical field
The utility model relates to a kind of power supply circuits, is specifically related to a kind of circuit that supplies power with double circuit.
Background technology
In the commercial power industry, it is more common often to run into situation about switching between the situation, particularly mains supply line that will between two supply lines, switch and the stand-by power supply circuit.When switching, if operating mistake too much just appears in artificial operation easily, if operation fully automatically can not realize under the certain situation switching immediately.
Summary of the invention
The utility model technical problem to be solved provides a kind of duplicate supply circuit, can realize that the effective and safe that supplies power with double circuit switches, again can Artificial Control.
For solving the problems of the technologies described above, following technical scheme is adopted in the invention:
A kind of circuit that supplies power with double circuit; Comprise two contactors, two circuit breakers and a time relay, two contactors are through the mutual interlocking of normally closed auxiliary contact; Two circuit breakers are connected with the coil of two contactors respectively, the normally opened contact of the time relay and the series connection of the coil of one of them contactor.
Further, said contactor all comprises at least one road normally-closed contact.
Further, said circuit breaker is a single channel type circuit breaker.
Further, the said time relay is the on-delay connection type time relay.
Because adopt technique scheme, the invention has following beneficial effect:
1, owing to be provided with two contactors and adopt interlocking to connect, thus have only a supply line to power to the load at every turn, the damage of having avoided faulty operation to cause to load equipment.
2, owing to be provided with two circuit breakers, and respectively with the coil series connection of two contactors, can control and whether automatically switch, satisfy specific (special) requirements; Simultaneously, when two circuit breakers are all connected, then two power supply circuits which electricity is arranged earlier, just preferentially use which power supply circuits power supply.
3, owing to be provided with the time relay, can control the time interval between the automatic switchover.
Description of drawings
Fig. 1 is the electrical schematic diagram of the invention.
Embodiment
In conjunction with Fig. 1, a kind of circuit that supplies power with double circuit, comprise two contactors (be expressed as KM1, KM2), two circuit breakers (be expressed as QF1, QF2), the time relay (being expressed as KT1) that on-delay is connected.
On major loop, the end of incoming cables of two contactors connects two feeder ears respectively, and the leading-out terminal of these two contactors is connected in parallel and is connected to load; On the control loop, the coil of contactor KM1 is received after the normally closed auxiliary contact of contactor KM2 and the circuit breaker Q F1 series connection between the wherein arbitrary phase and zero line of end of incoming cables of contactor KM1; The coil of contactor KM2 and the normally closed auxiliary contact of KM1 are received after the normally opened contact of time relay KT1 and the circuit breaker Q F2 series connection between the wherein arbitrary phase and zero line of end of incoming cables of contactor KM2; The coil of time relay KT1 is connected between the appearance end and zero line of QF2 simultaneously.Whether circuit breaker Q F1 control contactor QF1 connects automatically, and whether circuit breaker Q F2 control KM2 connects the turn-on delay time of time relay KT1 control contactor KM2 automatically.
During use, contactor KM1 connects main power supply circuits, and contactor KM2 connects the stand-by power supply circuit; If main power supply circuits have electricity, after circuit breaker Q F1 connected, main power supply circuits power supply was used in contactor KM1 adhesive, load this moment.After main circuit does not have electricity, contactor KM1 automatic disconnection, if at this moment stand-by circuit has electricity, and circuit breaker Q F2 connection, after the time that then elapsed time relay K T1 sets, KM2 connects automatically.If do not want to automatically switch, cut-off breaker QF2 just gets final product.If two power supply circuits all do not have electricity, and connect a circuit breaker Q F1, when QF2 connected, then which power supply circuits had electricity earlier, all that roads of just automaticallying switch.

Claims (4)

1. duplicate supply circuit; It is characterized in that: comprise two contactors; Two circuit breakers and a time relay; Two contactors are through the mutual interlocking of normally closed auxiliary contact, and two circuit breakers are connected with the coil of two contactors respectively, the normally opened contact of the time relay and the series connection of the coil of one of them contactor.
2, duplicate supply circuit according to claim 1 is characterized in that: said contactor all comprises at least one road normally-closed contact.
3, duplicate supply circuit according to claim 1 is characterized in that: said circuit breaker is a single channel type circuit breaker.
4, duplicate supply circuit according to claim 1 is characterized in that: the said time relay is the on-delay connection type time relay.
CN2011205172260U 2011-12-10 2011-12-10 Two-path power supply circuit Expired - Fee Related CN202435122U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011205172260U CN202435122U (en) 2011-12-10 2011-12-10 Two-path power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011205172260U CN202435122U (en) 2011-12-10 2011-12-10 Two-path power supply circuit

Publications (1)

Publication Number Publication Date
CN202435122U true CN202435122U (en) 2012-09-12

Family

ID=46784531

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011205172260U Expired - Fee Related CN202435122U (en) 2011-12-10 2011-12-10 Two-path power supply circuit

Country Status (1)

Country Link
CN (1) CN202435122U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105958633A (en) * 2016-06-22 2016-09-21 中航太克(厦门)电力技术股份有限公司 Two-way power supply automatic switching power supply circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105958633A (en) * 2016-06-22 2016-09-21 中航太克(厦门)电力技术股份有限公司 Two-way power supply automatic switching power supply circuit

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120912

Termination date: 20121210