CN110398639A - A kind of three-phase alternating current adjust automatically detection circuit - Google Patents
A kind of three-phase alternating current adjust automatically detection circuit Download PDFInfo
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- CN110398639A CN110398639A CN201910737871.4A CN201910737871A CN110398639A CN 110398639 A CN110398639 A CN 110398639A CN 201910737871 A CN201910737871 A CN 201910737871A CN 110398639 A CN110398639 A CN 110398639A
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- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 230000001012 protector Effects 0.000 claims abstract description 59
- 238000000819 phase cycle Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/18—Indicating phase sequence; Indicating synchronism
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/004—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of incorrect phase sequence; with switching for obtaining correct phase sequence
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
- H02H3/253—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage for multiphase applications, e.g. phase interruption
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of three-phase alternating current adjust automatically detection circuits, including inverse open phase protector ER1, A.C. contactor KM1, KM2, an inverse open phase protector ER1 common end ER1a connection wherein phase firewire, the normally closed point ER1b of inverse open phase protector ER1 connects A.C. contactor KM2 parallel with one another, KM2 coil one end, A.C. contactor KM1, the KM2 coil other end is connected to zero curve N altogether, the main contacts of inverse open phase protector ER1 is correspondingly connected with three-phase firewire in order, the main normally opened contact KM1a of A.C. contactor KM1 presses same sequential connection three-phase firewire, the main normally opened contact KM2a enter line side of A.C. contactor KM2 presses same sequential connection three-phase firewire, the main normally opened contact KM2a outgoing line side of A.C. contactor KM2 exchange wherein two be connected it is suitable Sequence connects three-phase firewire.Three-phase alternating current anti-phase phase shortage adjust automatically and defencive function may be implemented in the present invention.
Description
Technical field
The present invention relates to three-phase alternating-current powered control circuit field, specifically a kind of three-phase alternating current adjust automatically detection electricity
Road.
Background technique
The phase sequence and phase shortage situation of three-phase electricity will affect load whether safe handling, at present in three-phase alternating current dot system
In, only partial circuit takes inverse open phase protector to detect three phase mains situation, and is unable to adjust automatically phase order of 3-phase AC,
Three-phase alternating current is set to adapt to load automatically.
Summary of the invention is existing to solve the object of the present invention is to provide a kind of three-phase alternating current adjust automatically detection circuit
Technology three-phase alternating current can not adjust automatically phase sequence adapt to load the problem of.
In order to achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of three-phase alternating current adjust automatically detection circuit, it is characterised in that: connect including inverse open phase protector ER1, and exchange
Tentaculum KM1, KM2, a wherein phase inlet wire in the common end ER1a connection three-phase firewire inlet wire of inverse open phase protector ER1, against phase shortage
The opened point ER1c of normally closed point ER1b connection A.C. contactor KM2 coil one end of protector ER1, inverse open phase protector ER1 connects
A.C. contactor KM1 coil one end is connect, A.C. contactor KM1, KM2 coil other end is connected to zero curve N altogether, inverse open phase protector
The main contacts of ER1 is correspondingly connected with three-phase firewire inlet wire in order, and one end main normally opened contact KM1a of A.C. contactor KM1 is by same
The main normally opened contact KM1a other end of sequential connection three-phase firewire inlet wire, A.C. contactor KM1 presses same sequential connection three-phase
Firewire outlet, three-phase firewire outlet are connected to load, and one end main normally opened contact KM2a of A.C. contactor KM2 is by same sequence
Three-phase firewire inlet wire is connected, the main normally opened contact KM2a other end of A.C. contactor KM2 connects three-phase firewire outlet, and exchange connects
An only phase is suitable with when connecting three-phase firewire inlet wire when the main normally opened contact KM2a other end of tentaculum KM2 connects three-phase firewire outlet
Sequence is identical.
A kind of three-phase alternating current adjust automatically detection circuit, it is characterised in that: three-phase firewire be L1 phase, L2 phase and
L3 phase, the L1 phase inlet wire against in the common end ER1a connection three-phase firewire inlet wire of open phase protector ER1；A.C. contactor KM1,
The every end of main normally opened contact of KM2 is respectively provided with three tie points, and the tie point at both ends a pair when main normally opened contact is closed
It should be connected, in which:
The tie point of one end main normally opened contact KM1a first of A.C. contactor KM1 is connect with L1 phase inlet wire, A.C. contactor KM1
The tie point of one end main normally opened contact KM1a second connect with L2 phase inlet wire, the main normally opened contact KM1a of A.C. contactor KM1
One end third tie point is connect with L3 phase inlet wire, the main normally opened contact KM1a other end first connection of A.C. contactor KM1
Point is connect with L1 phase outlet, and main second tie point of the normally opened contact KM1a other end and the L2 phase outlet of A.C. contactor KM1 connects
It connects, the main normally opened contact KM1a other end third tie point of A.C. contactor KM1 is connect with L3 phase outlet, thus ac contactor
The both ends main normally opened contact KM1a device KM1 are separately connected three-phase firewire inlet wire, three-phase firewire outlet by same sequence；
The tie point of one end main normally opened contact KM2a first of A.C. contactor KM2 is connect with L1 phase inlet wire, A.C. contactor KM2
The tie point of one end main normally opened contact KM2a second connect with L2 phase inlet wire, the main normally opened contact KM2a of A.C. contactor KM2
One end third tie point is connect with L3 phase inlet wire, the main normally opened contact KM2a other end first connection of A.C. contactor KM2
Point is connect with L1 phase outlet, and main second tie point of the normally opened contact KM2a other end and the L3 phase outlet of A.C. contactor KM2 connects
It connects, the main normally opened contact KM2a other end third tie point of A.C. contactor KM2 is connect with L2 phase outlet, thus ac contactor
The both ends device KM2 main normally opened contact KM2a only have one be connected sequence it is identical.
A kind of three-phase alternating current adjust automatically detection circuit, it is characterised in that: the line of the A.C. contactor KM2
After enclosing the normally-closed contact KM1b of one end series AC contactor KM1, the normally closed point ER1b of inverse open phase protector ER1 is reconnected；
After the normally-closed contact KM2b of coil one end series AC contactor KM2 of A.C. contactor KM1, inverse open-phase protection is reconnected
The opened point ER1c of device ER1.
A kind of three-phase alternating current adjust automatically detection circuit, it is characterised in that: further include inverse open phase protector
The main contacts of ER2, inverse open phase protector ER2 connect three-phase firewire outlet by the order of connection of inverse open phase protector ER1 main contacts,
One end normally opened contact ER2a of inverse open phase protector ER2 connects the outlet of L3 phase, and the normally opened contact ER2a of inverse open phase protector ER2 is another
One end connects external control circuit, to power to control circuit.
In the present invention, A.C. contactor KM1, KM2 control three-phase alternating current input, and inverse open phase protector ER1 detects three-phase
The inverse phase shortage situation of alternating current, and control the energization of A.C. contactor KM1 or KM2 coil and be attracted, adjust automatically enters the three of load
Phase alternating current phase sequence realizes the protection to load.The present invention is also using inverse open phase protector ER2 detection three-phase alternating current simultaneously
Anti-phase and phase shortage situation, to disconnect the power supply to external loading control circuit in anti-phase and phase shortage, to protect control circuit.
Compared with prior art, advantage of the present invention are as follows:
1, three-phase alternating current anti-phase phase shortage adjust automatically and defencive function may be implemented in the present invention.
2, the configuration of the present invention is simple, easily fabricated, safe and reliable；
3, the present invention is applied widely, can be widely applied to various types of three-phase alternating current electrical systems.
Detailed description of the invention
Fig. 1 is circuit diagram of the present invention.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, a kind of three-phase alternating current adjust automatically detection circuit, it is characterised in that: including inverse open phase protector
ER1 and A.C. contactor KM1, KM2, wherein one in the common end ER1a connection three-phase firewire inlet wire of inverse open phase protector ER1
Phase inlet wire, normally closed point ER1b connection A.C. contactor KM2 coil one end of inverse open phase protector ER1, inverse open phase protector ER1's
Opened point ER1c connection A.C. contactor KM1 coil one end, A.C. contactor KM1, KM2 coil other end is connected to zero curve N altogether, inverse
The main contacts of open phase protector ER1 is correspondingly connected with three-phase firewire inlet wire, the main normally opened contact KM1a of A.C. contactor KM1 in order
Same sequential connection three-phase firewire inlet wire is pressed in one end, and the main normally opened contact KM1a other end of A.C. contactor KM1 is by same suitable
Sequence connects three-phase firewire outlet, and three-phase firewire outlet is connected to load, and one end main normally opened contact KM2a of A.C. contactor KM2 is pressed
The main normally opened contact KM2a other end connection three-phase firewire of same sequential connection three-phase firewire inlet wire, A.C. contactor KM2 goes out
Line, and A.C. contactor KM2 the main normally opened contact KM2a other end connect three-phase firewire outlet when an only phase with connect three-phase
Sequence is identical when firewire inlet wire.
Three-phase firewire is L1 phase, L2 phase and L3 phase, the common end ER1a connection three-phase firewire inlet wire of inverse open phase protector ER1
In L1 phase inlet wire；The every end of main normally opened contact of A.C. contactor KM1, KM2 are respectively provided with three tie points, and the connection at both ends
Point corresponds conducting in main normally opened contact closure, in which:
The tie point of one end main normally opened contact KM1a first of A.C. contactor KM1 is connect with L1 phase inlet wire, A.C. contactor KM1
The tie point of one end main normally opened contact KM1a second connect with L2 phase inlet wire, the main normally opened contact KM1a of A.C. contactor KM1
One end third tie point is connect with L3 phase inlet wire, the main normally opened contact KM1a other end first connection of A.C. contactor KM1
Point is connect with L1 phase outlet, and main second tie point of the normally opened contact KM1a other end and the L2 phase outlet of A.C. contactor KM1 connects
It connects, the main normally opened contact KM1a other end third tie point of A.C. contactor KM1 is connect with L3 phase outlet, thus ac contactor
The both ends main normally opened contact KM1a device KM1 are separately connected three-phase firewire inlet wire, three-phase firewire outlet by same sequence；
The tie point of one end main normally opened contact KM2a first of A.C. contactor KM2 is connect with L1 phase inlet wire, A.C. contactor KM2
The tie point of one end main normally opened contact KM2a second connect with L2 phase inlet wire, the main normally opened contact KM2a of A.C. contactor KM2
One end third tie point is connect with L3 phase inlet wire, the main normally opened contact KM2a other end first connection of A.C. contactor KM2
Point is connect with L1 phase outlet, and main second tie point of the normally opened contact KM2a other end and the L3 phase outlet of A.C. contactor KM2 connects
It connects, the main normally opened contact KM2a other end third tie point of A.C. contactor KM2 is connect with L2 phase outlet, thus ac contactor
The both ends device KM2 main normally opened contact KM2a only have one be connected sequence it is identical.
After the normally-closed contact KM1b of coil one end series AC contactor KM1 of A.C. contactor KM2, inverse phase shortage is reconnected
The normally closed point ER1b of protector ER1；
After the normally-closed contact KM2b of coil one end series AC contactor KM2 of A.C. contactor KM1, inverse open-phase protection is reconnected
The opened point ER1c of device ER1.
The invention also includes inverse open phase protector ER2, the main contacts of inverse open phase protector ER2 presses inverse open phase protector ER1
The order of connection of main contacts connects three-phase firewire outlet, and the one end normally opened contact ER2a connection L3 phase of inverse open phase protector ER2 goes out
The normally opened contact ER2a other end of line, inverse open phase protector ER2 connects external control circuit, to power to control circuit.
In the present invention, the common end ER1a of inverse open phase protector ER1 is connected with the L1 phase firewire inlet wire of three-phase alternating current, inverse
One end normally closed point ER1b connection A.C. contactor KM1 normally-closed contact KM1b of open phase protector ER1, A.C. contactor KM1 are normally closed
The contact KM1b other end connects one end of A.C. contactor KM2 coil, three intersection of other end connection of A.C. contactor KM2 coil
Galvanic electricity zero curve N.
One end opened point ER1c connection A.C. contactor KM2 normally-closed contact KM2b of the inverse contact open phase protector ER1, exchange
The contactor KM2 normally-closed contact KM2b other end connect A.C. contactor KM1 coil one end, A.C. contactor KM1 coil it is another
One end connects three-phase alternating current zero curve N.
Inverse open phase protector ER1 main contacts connects L1 phase firewire inlet wire, L2 phase firewire inlet wire, L3 phase firewire by respective sequence
Inlet wire.
One end main normally opened contact KM1a, KM2a of A.C. contactor KM1, KM2 are suitable by inverse open phase protector ER1 main contacts
Sequence connects three-phase firewire inlet wire, and the main normally opened contact KM1a other end of A.C. contactor KM1 is by input phase sequence connection three-phase fire
Line outlet, three-phase firewire outlet are connected to load, and the main normally opened contact KM2a other end of A.C. contactor KM2 adjusts two phase sequences
Three-phase firewire outlet is connected afterwards, and three-phase alternating current is exported by three-phase firewire outlet phase load by A.C. contactor KM1, KM2 parallel connection
Electricity；
The main contacts of inverse open phase protector ER2 presses the sequential connection three-phase firewire outlet of ER1 main contacts；
One end of inverse open phase protector ER2 normally opened contact connects L3 phase firewire, the other end of inverse open phase protector ER2 normally opened contact
External control circuit is connected to power.
The course of work of the invention is as follows:
(1), when inverse open phase protector ER1 detects that three-phase alternating current input phase sequence is correct, inverse open phase protector ER1's is normally closed
Point disconnects, and opened point is attracted, and A.C. contactor KM1 coil obtains electric, and the main normally opened contact of KM1 is attracted, and phase order of 3-phase AC is not adjusted
It is whole can output loading power supply；
(2), when inverse open phase protector ER1 detects that three-phase alternating current inputs phase sequence mistake, inverse open phase protector ER1 opened point
It remaining open, normally closed point remains closed, and A.C. contactor KM2 coil obtains electric, and the main normally opened contact of A.C. contactor KM2 is attracted, and three
Phase alternating current phase sequence adjusts the sequence of wherein two-phase by the main normally opened contact of A.C. contactor KM2, then exports to load supplying；
(3) when the three-phase alternating current of inverse open phase protector ER2 detection output is without phase shortage, inverse open phase protector ER2 normally opened contact
It is attracted, power supply connects external loading control circuit, control circuit work once electrified；
(4) when inverse open phase protector ER2 detection output three-phase alternating current has phase shortage, inverse open phase protector ER2 normally opened contact is kept
It disconnects, power supply can not connect external loading control circuit, the three-phase alternating current for preventing control circuit from load being allowed to be connected into phase shortage, damage
Load.
Embodiment of the present invention is only the description carried out to the preferred embodiment of the present invention, not to the present invention
Conception and scope is defined, and under the premise of not departing from design philosophy of the present invention, engineers and technicians are to this hair in this field
The all variations and modifications that bright technical solution is made should all fall into protection scope of the present invention, the claimed skill of the present invention
Art content, is all described in the claims.
Claims (4)
1. a kind of three-phase alternating current adjust automatically detection circuit, it is characterised in that: including inverse open phase protector ER1, and exchange
Contactor KM1, KM2, a wherein phase inlet wire in the common end ER1a connection three-phase firewire inlet wire of inverse open phase protector ER1 are inverse scarce
Normally closed point ER1b connection A.C. contactor KM2 coil one end of phase protector ER1, the opened point ER1c of inverse open phase protector ER1
A.C. contactor KM1 coil one end is connected, A.C. contactor KM1, KM2 coil other end is connected to zero curve N altogether, inverse open phase protector
The main contacts of ER1 is correspondingly connected with three-phase firewire inlet wire in order, and one end main normally opened contact KM1a of A.C. contactor KM1 is by same
The main normally opened contact KM1a other end of sequential connection three-phase firewire inlet wire, A.C. contactor KM1 presses same sequential connection three-phase
Firewire outlet, three-phase firewire outlet are connected to load, and one end main normally opened contact KM2a of A.C. contactor KM2 is by same sequence
Three-phase firewire inlet wire is connected, the main normally opened contact KM2a other end of A.C. contactor KM2 connects three-phase firewire outlet, and exchange connects
An only phase is suitable with when connecting three-phase firewire inlet wire when the main normally opened contact KM2a other end of tentaculum KM2 connects three-phase firewire outlet
Sequence is identical.
2. a kind of three-phase alternating current adjust automatically detection circuit according to claim 1, it is characterised in that: three-phase firewire is
L1 phase, L2 phase and L3 phase, the L1 phase inlet wire against in the common end ER1a connection three-phase firewire inlet wire of open phase protector ER1；Exchange
The every end of main normally opened contact of contactor KM1, KM2 are respectively provided with three tie points, and the tie point at both ends is closed in main normally opened contact
Conducting is corresponded when conjunction, in which:
The tie point of one end main normally opened contact KM1a first of A.C. contactor KM1 is connect with L1 phase inlet wire, A.C. contactor KM1
The tie point of one end main normally opened contact KM1a second connect with L2 phase inlet wire, the main normally opened contact KM1a of A.C. contactor KM1
One end third tie point is connect with L3 phase inlet wire, the main normally opened contact KM1a other end first connection of A.C. contactor KM1
Point is connect with L1 phase outlet, and main second tie point of the normally opened contact KM1a other end and the L2 phase outlet of A.C. contactor KM1 connects
It connects, the main normally opened contact KM1a other end third tie point of A.C. contactor KM1 is connect with L3 phase outlet, thus ac contactor
The both ends main normally opened contact KM1a device KM1 are separately connected three-phase firewire inlet wire, three-phase firewire outlet by same sequence；
The tie point of one end main normally opened contact KM2a first of A.C. contactor KM2 is connect with L1 phase inlet wire, A.C. contactor KM2
The tie point of one end main normally opened contact KM2a second connect with L2 phase inlet wire, the main normally opened contact KM2a of A.C. contactor KM2
One end third tie point is connect with L3 phase inlet wire, the main normally opened contact KM2a other end first connection of A.C. contactor KM2
Point is connect with L1 phase outlet, and main second tie point of the normally opened contact KM2a other end and the L3 phase outlet of A.C. contactor KM2 connects
It connects, the main normally opened contact KM2a other end third tie point of A.C. contactor KM2 is connect with L2 phase outlet, thus ac contactor
The both ends device KM2 main normally opened contact KM2a only have one be connected sequence it is identical.
3. a kind of three-phase alternating current adjust automatically detection circuit according to claim 1, it is characterised in that: the exchange connects
After the normally-closed contact KM1b of coil one end series AC contactor KM1 of tentaculum KM2, the normal of inverse open phase protector ER1 is reconnected
Close point ER1b；
After the normally-closed contact KM2b of coil one end series AC contactor KM2 of A.C. contactor KM1, inverse open-phase protection is reconnected
The opened point ER1c of device ER1.
4. a kind of three-phase alternating current adjust automatically detection circuit according to claim 1 or 2, it is characterised in that: further include
The main contacts of inverse open phase protector ER2, inverse open phase protector ER2 are connected by the order of connection of inverse open phase protector ER1 main contacts
Three-phase firewire outlet, one end normally opened contact ER2a of inverse open phase protector ER2 connect the outlet of L3 phase, inverse open phase protector ER2's
The normally opened contact ER2a other end connects external control circuit, to power to control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910737871.4A CN110398639A (en) | 2019-08-12 | 2019-08-12 | A kind of three-phase alternating current adjust automatically detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910737871.4A CN110398639A (en) | 2019-08-12 | 2019-08-12 | A kind of three-phase alternating current adjust automatically detection circuit |
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| Publication Number | Publication Date |
|---|---|
| CN110398639A true CN110398639A (en) | 2019-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910737871.4A Pending CN110398639A (en) | 2019-08-12 | 2019-08-12 | A kind of three-phase alternating current adjust automatically detection circuit |
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