CN206020544U - Job site three-phase power supply phase sequence automatic identification equipment - Google Patents
Job site three-phase power supply phase sequence automatic identification equipment Download PDFInfo
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- CN206020544U CN206020544U CN201620986800.XU CN201620986800U CN206020544U CN 206020544 U CN206020544 U CN 206020544U CN 201620986800 U CN201620986800 U CN 201620986800U CN 206020544 U CN206020544 U CN 206020544U
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Abstract
This utility model discloses a kind of job site three-phase power supply phase sequence automatic identification equipment, the phase sequence of the supply line being made up of three-phase input end, input chopper (QF1), thermorelay (KR), output chopper (QF2) and three-phase output end sequential series for automatic identification, including electrical primary loop and control loop.By same model phase sequence relay positive sequence voltage, this utility model differentiates that relay (KZX) positive sequence wiring and negative sequence voltage differentiate relay (KFX) negative phase-sequence wiring, it is achieved that the automatic identification of three-phase power supply phase sequence.Further, no matter input power is positive sequence or negative phase-sequence to this utility model, can be switched fast positive sequence or negative phase-sequence power supply that output is specified on demand.
Description
Technical field
This utility model belongs to construction power supply Phase sequence detection and handoff technique field, particularly a kind of energy automatic identification three-phase
Power phase the job site three-phase power supply phase sequence automatic identification equipment being switched fast.
Background technology
There are a large amount of alternating-current electric drive apparatus using 380V three-phase temporary sources in job site, need to consider transmission direction
Factor.Such as：Electric crane, electric knife gate mechanism, miniature motor etc..
Due to job site distribution line wiring specification not to the utmost, often there is phase sequence entanglement.Electricity consumption or equipment examination at the scene
During fortune, artificial cognition and Switching power phase sequence is needed.Operation difficulty is not only increased, operation progress and operation peace can be also affected
Entirely.
Therefore, the problem of prior art presence is：
1st, the phase sequence of automatic identification job site three phase mains is unable to；
2nd, when the phase sequence of job site three phase mains is unsatisfactory for needing, it is impossible to automatically switch to required phase sequence.
Content of the invention
The purpose of this utility model is to provide a kind of job site three-phase power supply phase sequence automatic identification equipment, can know automatically
Other three-phase power supply phase sequence, it is ensured that the progress and safety of job site debugging.
Further, another object of the present utility model is to provide a kind of job site three-phase power supply phase sequence automatic identification
Device, not only can automatic identification three-phase power supply phase sequence, moreover it is possible to which phase sequence is rapidly switched to required state.
The technical solution for realizing this utility model purpose is：
A kind of job site three-phase power supply phase sequence automatic identification equipment, disconnected by three-phase input end, input for automatic identification
The phase sequence of the supply line that road device QF1, thermorelay KR, output circuit breaker Q F2 and three-phase output end sequential series are constituted, including
Electrical primary loop and control loop, the electrical primary loop include that positive sequence voltage differentiates that relay KZX, negative sequence voltage differentiate
Relay KFX, phase demodulation fuse FU A, FU B, FU C, the phase demodulation fuse FU A, FU B, FU C one end are respectively from three-phase
With positive sequence voltage, the corresponding extraction of A, B, C of input, its other end differentiate that relay KZX voltage input end A, B, C are corresponding
Parallel connection, parallel connection corresponding with negative sequence voltage differentiation relay KFX voltage input end A, C, B；The control loop includes that control becomes
Depressor T, fuse FU 11 of control, FU 12, control secondary fuse FU 21, FU 22, positive sequence auxiliary reclay KZXZ,
Negative phase-sequence auxiliary reclay KFXZ, power supply positive sequence display lamp LDYZX, power supply negative phase-sequence display lamp LDYFX, power supply overstep the bounds display lamp
A, the C two of the input of LDYSG, the control transformator T by fuse FU 11 of control, FU 12 and three-phase input end
It is connected, through controlling secondary fuse FU 21, FU 22, the single-phase control power supplys of output 220V, in the middle of the positive sequence for its outfan
The normally opened contact of relay KZXZ is connected with control power supply single-phase with 220V after power supply positive sequence display lamp LDYZX series connection, described negative
The normally opened contact of sequence auxiliary reclay KFXZ is connected with control power supply single-phase with 220V after power supply negative phase-sequence display lamp LDYFX series connection,
The normally-closed contact of the positive sequence auxiliary reclay KZXZ, the normally-closed contact of negative phase-sequence auxiliary reclay KFXZ, power supply overstep the bounds display lamp
After LDYSG series connection, control power supply single-phase with 220V is connected.
Further, the first A.C. contactor KM1 and the second A.C. contactor KM2, first ac contactor are also included
The confession being serially connected in after the main contact parallel connection of device KM1 and the second A.C. contactor KM2 between thermorelay KR and output circuit breaker Q F2
In electric line, also include being arranged on opening button TA on control secondary circuit, positive sequence switch knob ZXHA, negative phase-sequence switch knob
FXHA；The main contact of the first A.C. contactor KM1 and the second A.C. contactor KM2 tie phase sequence is conversely, first
A.C. contactor KM1A, B, C three-phase main contact two ends are input into supply line and output tri- corresponding connection of A, B, C, and second hands over
Stream catalyst KM1A, B, C three-phase main contact one end is input into tri- corresponding connection of A, B, C, the second A.C. contactor with supply line
KM1A, B, C three-phase main contact other end exports tri- corresponding connection of A, C, B with supply line；One end of opening button TA
It is connected by the normally-closed contact of thermorelay KR fuse FU 22 secondary with the second control, the second A.C. contactor KM2 is normal
One end of closed contact is connected by the coil of the first A.C. contactor KM1 fuse FU 21 secondary with the first control, and described first
Coil and first control secondary fuse FU of the one end of A.C. contactor KM1 normally-closed contacts by the second A.C. contactor KM2
21 be connected, one end of the first A.C. contactor KM1 normally opened contacts is connected with the other end of opening button TA, its other end and
The other end of the second A.C. contactor KM2 normally-closed contacts is connected；One end of the second A.C. contactor KM2 normally opened contacts with point
The other end of lock button TA is connected, and its other end is connected with the other end of the first A.C. contactor KM1 normally-closed contacts；The positive sequence
After switch knob ZXHA is connected with the normally opened contact of positive sequence auxiliary reclay KZXZ, the other end phase of one end and opening button TA
Even, the other end is connected with the other end of the second A.C. contactor KM2 normally-closed contacts；In the negative phase-sequence switch knob FXHA and negative phase-sequence
Between relay KFXZ normally opened contact series connection after, one end is connected with the other end of opening button TA, and the other end is exchanged with second and connect
The other end of tentaculum KM2 normally-closed contacts is connected；The normally opened of the positive sequence switch knob ZXHA and negative phase-sequence auxiliary reclay KFXZ touches
After point series connection, one end is connected with the other end of opening button TA, and the other end is another with the first A.C. contactor KM1 normally-closed contacts
End is connected；After the negative phase-sequence switch knob FXHA is connected with the normally opened contact of positive sequence auxiliary reclay KZXZ, one end is pressed with separating brake
The other end of button TA is connected, and the other end is connected with the other end of the first A.C. contactor KM1 normally-closed contacts.
Compared with prior art, its remarkable advantage is this utility model：
1st, recognize accurately：This utility model differentiates relay (KZX) by same model phase sequence relay-positive sequence voltage and bears
Sequence voltage differentiates the mutually anti-phase wiring of relay (KFX), it is achieved that the automatic identification of three-phase power supply phase sequence.
2nd, switch rapid：This utility model combines three-phase power supply phase sequence automatic identification, and no matter input power is positive sequence or anti-
Sequence, can quickly export positive sequence power supply.
With reference to the accompanying drawings and detailed description this utility model is described in further detail.
Description of the drawings
Electrical primary loop diagrams of the Fig. 1 for this utility model job site three-phase power supply phase sequence automatic identification equipment.
Electric secondary circuit figures of the Fig. 2 for this utility model job site three-phase power supply phase sequence automatic identification equipment.
Specific embodiment
A kind of job site three-phase power supply phase sequence automatic identification equipment of this utility model, for automatic identification by three-phase input
The supply line that end, input circuit breaker Q F1, thermorelay KR, output circuit breaker Q F2 and three-phase output end sequential series are constituted
Phase sequence, including electrical primary loop as shown in figure 1, and control loop, control secondary circuit, as shown in Figure 2.
As shown in figure 1, the electrical primary loop includes that positive sequence voltage differentiates that relay KZX, negative sequence voltage differentiate relay
Device KFX, phase demodulation fuse FU A, FU B, FU C, the phase demodulation fuse FU A, FU B, FU C one end are respectively from three-phase input
The corresponding extraction of A, B, C at end, the parallel connection corresponding with positive sequence voltage differentiation relay KZX voltage input end A, B, C of its other end,
Parallel connection corresponding with negative sequence voltage differentiation relay KFX voltage input end A, C, B；
As shown in Fig. 2 the control loop includes controlling transformator T, fuse FU 11 of control, FU 12, control
Secondary fuse FU 21, FU 22, positive sequence auxiliary reclay KZXZ, negative phase-sequence auxiliary reclay KFXZ, power supply positive sequence display lamp
LDYZX, power supply negative phase-sequence display lamp LDYFX, power supply overstep the bounds display lamp LDYSG,
The input of the control transformator T A, C by fuse FU 11 of control, FU 12 and three-phase input end
Biphase connected, its outfan exports the single-phase control power supplys of 220V through controlling secondary fuse FU 21, FU 22,
The normally opened contact of the positive sequence auxiliary reclay KZXZ is single-phase with 220V after connecting with power supply positive sequence display lamp LDYZX
Control power supply is connected,
The normally opened contact of the negative phase-sequence auxiliary reclay KFXZ is single-phase with 220V after connecting with power supply negative phase-sequence display lamp LDYFX
Control power supply is connected,
The normally-closed contact of the positive sequence auxiliary reclay KZXZ, the normally-closed contact of negative phase-sequence auxiliary reclay KFXZ, power supply lose
After lattice display lamp LDYSG series connection, control power supply single-phase with 220V is connected.
The positive sequence voltage differentiates that relay KZX and negative sequence voltage differentiate that relay KFX is same model phase sequence relay.
When installation's power source input is qualified positive sequence voltage, as positive phase sequence relay KZX inputs are three-phase positive sequence voltage,
Negative sequence relay KFX inputs are three-phase negative/positive voltage, and positive phase sequence relay KZX regular events, negative sequence relay KFX are failure to actuate.
380V power supplys become T through isolation and are changed into 220V, used as secondary operation circuit controls power supply.Due to positive phase sequence relay KZX action connection points
Move again, the KZXZ coil energized actions of positive sequence intermediate relay circuit, KZXZ normal opened contacts are closed, power supply positive sequence display lamp
LDYZX normally indicates that output starts and keep primary Ioops and output to start and keep the KZXZ normal opened contacts closure in secondary circuit.
When installation's power source input is qualified negative sequence voltage, as primary connection is anti-phase, negative sequence relay KFX inputs are
Three-phase positive sequence voltage is operating normally, and positive phase sequence relay KZX inputs are failure to actuate for three-phase negative/positive voltage.380V power supplys become T through isolation
It is changed into 220V, as secondary operation circuit controls power supply.As negative sequence relay KFX action connection points are moved again, relay in the middle of negative phase-sequence
The KFXZ coil energized actions in device loop, KFXZ normal opened contacts are closed, and power supply negative phase-sequence display lamp LDYFX normally indicates that output is opened
Dynamic and holding primary Ioops and output start and keep the KFXZ normal opened contacts in secondary circuit to close.
When power supply is unqualified because of reasons such as phase shortages or low-voltage, positive sequence and negative sequence relay KZX, KFX relay are not
Action, positive sequence and negative phase-sequence auxiliary reclay KZXZ and KFXZ normally closed contacts are turned on, and the power supply display lamp LDYSG that oversteps the bounds indicates that power supply loses
Lattice.
Can be seen that from said process, this utility model achieves the automatic identification to job site three-phase power supply phase sequence.
As improvement, to realize that the automatic switchover of job site three-phase power supply phase sequence, this utility model also include the first friendship
The master of stream catalyst KM1 and the second A.C. contactor KM2, the first A.C. contactor KM1 and the second A.C. contactor KM2 touches
It is serially connected in after head parallel connection in the supply line between thermorelay KR and output circuit breaker Q F2, also includes being arranged on control secondary
Opening button TA, positive sequence switch knob ZXHA on loop, negative phase-sequence switch knob FXHA；
The main contact of the first A.C. contactor KM1 and the second A.C. contactor KM2 tie phase sequence are conversely, the
One A.C. contactor KM1A, B, C three-phase main contact two ends are input into supply line and output tri- corresponding connection of A, B, C, and second
A.C. contactor KM1A, B, C three-phase main contact one end is input into tri- corresponding connection of A, B, C, the second ac contactor with supply line
Device KM1A, B, C three-phase main contact other end exports tri- corresponding connection of A, C, B with supply line；
Normally-closed contact and second control secondary fuse FU22 of the one end of opening button TA by thermorelay KR
It is connected, one end of the second A.C. contactor KM2 normally-closed contacts is controlled by the coil and first of the first A.C. contactor KM1
Secondary fuse FU 21 is connected, and one end of the first A.C. contactor KM1 normally-closed contacts passes through the second A.C. contactor KM2
Coil be connected with the first secondary fuse FU 21 of control,
One end of the first A.C. contactor KM1 normally opened contacts is connected with the other end of opening button TA, its other end
It is connected with the other end of the second A.C. contactor KM2 normally-closed contacts；
One end of the second A.C. contactor KM2 normally opened contacts is connected with the other end of opening button TA, its other end
It is connected with the other end of the first A.C. contactor KM1 normally-closed contacts；
After the positive sequence switch knob ZXHA is connected with the normally opened contact of positive sequence auxiliary reclay KZXZ, one end is pressed with separating brake
The other end of button TA is connected, and the other end is connected with the other end of the second A.C. contactor KM2 normally-closed contacts；
After the negative phase-sequence switch knob FXHA is connected with the normally opened contact of negative phase-sequence auxiliary reclay KFXZ, one end is pressed with separating brake
The other end of button TA is connected, and the other end is connected with the other end of the second A.C. contactor KM2 normally-closed contacts；
After the positive sequence switch knob ZXHA is connected with the normally opened contact of negative phase-sequence auxiliary reclay KFXZ, one end is pressed with separating brake
The other end of button TA is connected, and the other end is connected with the other end of the first A.C. contactor KM1 normally-closed contacts；
After the negative phase-sequence switch knob FXHA is connected with the normally opened contact of positive sequence auxiliary reclay KZXZ, one end is pressed with separating brake
The other end of button TA is connected, and the other end is connected with the other end of the first A.C. contactor KM1 normally-closed contacts.
As further improving, also include overload light LGZ, output positive sequence display lamp LSCZX, output negative phase-sequence display lamp
LSCFX；
After the overload light LGZ is connected with the normally opened contact of thermorelay KR, one end controls secondary fusing with first
Device FU 21 is connected, and other end fuse FU 22 secondary with the second control is connected；
Described output positive sequence display lamp LSCZX one end fuse FU 21 secondary with the first control is connected, and its other end is simultaneously
It is connected with first A.C. contactor KM1 normally opened contacts one end and second A.C. contactor KM2 normally opened contacts one end, described first hands over
Normally opened contact and second control secondary fusing of the other end of stream catalyst KM1 normally opened contacts by positive sequence auxiliary reclay KZXZ
Device FU 22 is connected, and the other end of the second A.C. contactor KM2 normally opened contacts is by the normally opened of negative phase-sequence auxiliary reclay KFXZ
Contact fuse FU 22 secondary with the second control is connected；
Described output negative phase-sequence display lamp LSCFX one end fuse FU 21 secondary with the first control is connected, and its other end is simultaneously
It is connected with first A.C. contactor KM1 normally opened contacts one end and second A.C. contactor KM2 normally opened contacts one end, described first hands over
The other end of stream catalyst KM1 normally opened contacts controls secondary melting by the normally opened contact and second of negative phase-sequence auxiliary reclay KFXZ
Disconnected device FU 22 is connected, and the other end of the second A.C. contactor KM2 normally opened contacts is by the normal of positive sequence auxiliary reclay KZXZ
Open contact fuse FU 22 secondary with the second control to be connected.
When installation's power source input is qualified positive sequence voltage, as positive phase sequence relay KZX inputs are three-phase positive sequence voltage,
Negative sequence relay KFX inputs are three-phase negative/positive voltage, and positive phase sequence relay KZX regular events, negative sequence relay KFX are failure to actuate.
380V power supplys become T through isolation and are changed into 220V, used as secondary operation circuit controls power supply.Due to positive phase sequence relay KZX action connection points
Move again, the KZXZ coil energized actions of positive sequence intermediate relay circuit, KZXZ normal opened contacts are closed, power supply positive sequence display lamp
LDYZX normally indicates that output starts and keep primary Ioops and output to start and keep the KZXZ normal opened contacts closure in secondary circuit.
1) such as need positive sequence to export, press positive sequence switch knob ZXHA.Operation power is auxiliary through fuse FU21, thermorelay KR
Help contact, trip button TA, output start and keep primary Ioops in positive sequence switch knob ZXHA, KZXZ normal opened contact, #2 defeated
Go out the normally closed auxiliary contacts of A.C. contactor KM2, obtain #1 output AC catalyst KM1 coils electric, and pass through KM1 auxiliary contacts
Catalyst KM1 coil attracting states, KM1 main contacts is kept to close.If now master switch QF1, QF2 is closed, three-phase positive sequence electricity
Device outfan is delivered to through input, master switch QF1, thermorelay KR, KM1 main contact, master switch QF2, positive sequence in source.Simultaneously
The normally opened auxiliary contact closures of KM1 and KZXZ, positive sequence output indicator LZXSC are lighted.
2) such as need negative phase-sequence to export, press negative phase-sequence switch knob FXHA.Operation power is auxiliary through fuse FU21, thermorelay KR
Contact, trip button TA, output is helped to start and keep in secondary circuit：Negative phase-sequence switch knob FXHA, KZXZ normal opened contact, #1 are defeated
Go out the normally closed auxiliary contacts of A.C. contactor KM1, obtain #2 output AC catalyst KM2 coils electric, and pass through KM2 auxiliary contacts
Catalyst KM2 coil attracting states, KM2 main contacts is kept to close.If now master switch QF1, QF2 is closed, three-phase positive sequence electricity
Device outfan is delivered to through input, master switch QF1, thermorelay KR, KM2 main contact, master switch QF2, negative phase-sequence in source.Simultaneously
The normally opened auxiliary contact closures of KM2 and KZXZ, negative phase-sequence output indicator LFXSC are lighted.
When installation's power source input is qualified negative sequence voltage, as primary connection is anti-phase, negative sequence relay KFX inputs are
Three-phase positive sequence voltage is operating normally, and positive phase sequence relay KZX inputs are failure to actuate for three-phase negative/positive voltage.380V power supplys become T through isolation
It is changed into 220V, as secondary operation circuit controls power supply.As negative sequence relay KFX action connection points are moved again, relay in the middle of negative phase-sequence
The KFXZ coil energized actions in device loop, KFXZ normal opened contacts are closed, and power supply negative phase-sequence display lamp LDYFX normally indicates that output is opened
Dynamic and holding primary Ioops and output start and keep the KFXZ normal opened contacts in secondary circuit to close.
1) such as need positive sequence to export, press positive sequence switch knob ZXHA.Operation power is auxiliary through fuse FU21, thermorelay KR
Help contact, trip button TA, output start and keep primary Ioops in positive sequence switch knob ZXHA, KFXZ normal opened contact, output
Start and keep the normally closed auxiliary contacts of #1 output AC catalyst KM1 in secondary circuit, make #2 output AC catalyst KM2 coils
Must be electric, and keep catalyst KM2 coil attracting states, KM2 main contacts to close by KM2 auxiliary contacts.If now master switch
QF1, QF2 are closed, then three-phase negative/positive power supply is through input, master switch QF1, thermorelay KR, KM2 main contact, master switch QF2,
Positive sequence delivers to device outfan.The normally opened auxiliary contacts of KM2 and KFXZ are closed simultaneously, and positive sequence output indicator LZXSC is lighted.
2) such as need negative phase-sequence to export, press negative phase-sequence switch knob FXHA.Operation power is auxiliary through fuse FU21, thermorelay KR
Help contact, trip button TA, output start and keep secondary circuit in negative phase-sequence switch knob FXHA, KFXZ normal opened contact, output
Start and keep the normally closed auxiliary contacts of #2 output AC catalyst KM2 in primary Ioops, make #1 output AC catalyst KM1 coils
Must be electric, and keep catalyst KM1 coil attracting states, KM1 main contacts to close by KM1 auxiliary contacts.If now master switch
QF1, QF2 are closed, then three-phase negative/positive power supply is through input, master switch QF1, thermorelay KR, KM1 main contact, master switch QF2,
Negative phase-sequence delivers to device outfan.The normally opened auxiliary contacts of KM1 and KFXZ are closed simultaneously, and negative phase-sequence output indicator LFXSC is lighted.
Power phase switching device is by opening button TA disjunction control loop so as to realizing device separating brake function.
When power phase switching device is transshipped, thermorelay KR actions, overload light LGZ are indicated.
For realizing automatic gauge, also include multi-functional meter MA summation current transformer TA A, TA B, TA C, many work(
The voltage input end of energy meter MA is with phase demodulation fuse FU A, FU B, FU C outfan positive sequences are corresponding and connect, its current input terminal
Corresponding connect with the secondary terminals Same Name of Ends positive sequence of current transformer TA A, TA B, TA C.
In sum, this utility model can carry out 380V alternating current power supply phase sequences automatic identification and be switched fast, and have phase
Close protection, measurement, metering, signal designation function.
Claims (4)
1. a kind of job site three-phase power supply phase sequence automatic identification equipment, breaking by three-phase input end, input for automatic identification
The phase sequence of the supply line that device (QF1), thermorelay (KR), output chopper (QF2) and three-phase output end sequential series are constituted,
Including electrical primary loop and control loop, it is characterised in that：
The electrical primary loop includes that positive sequence voltage differentiates that relay (KZX), negative sequence voltage differentiate relay (KFX), phase demodulation
Fuse (FU A, FU B, FU C), phase demodulation fuse (FU A, FU B, the FU C) one end A respectively from three-phase input end,
The corresponding extraction of B, C, its other end and positive sequence voltage differentiate the corresponding parallel connection of relay (KZX) voltage input end A, B, C, and negative
Sequence voltage differentiates the corresponding parallel connection of relay (KFX) voltage input end A, C, B；
The control loop includes controlling transformator (T), fuse (FU 11, FU 12) of control, controls secondary fuse
(FU 21, FU 22), positive sequence auxiliary reclay (KZXZ), negative phase-sequence auxiliary reclay (KFXZ), power supply positive sequence display lamp
(LDYZX), power supply negative phase-sequence display lamp (LDYFX), power supply overstep the bounds display lamp (LDYSG),
The input of control transformator (T) is by fuse (FU 11, FU 12) of control and A, C of three-phase input end
Biphase connected, its outfan exports the single-phase control power supplys of 220V through controlling secondary fuse (FU 21, FU 22),
The normally opened contact of positive sequence auxiliary reclay (KZXZ) is single-phase with 220V after connecting with power supply positive sequence display lamp (LDYZX)
Control power supply is connected,
The normally opened contact of negative phase-sequence auxiliary reclay (KFXZ) is single-phase with 220V after connecting with power supply negative phase-sequence display lamp (LDYFX)
Control power supply is connected,
The normally-closed contact of positive sequence auxiliary reclay (KZXZ), the normally-closed contact of negative phase-sequence auxiliary reclay (KFXZ), power supply lose
After lattice display lamp (LDYSG) series connection, control power supply single-phase with 220V is connected.
2. phase sequence automatic identification equipment according to claim 1, it is characterised in that：The positive sequence voltage differentiates relay
(KZX) and negative sequence voltage differentiate relay (KFX) be same model phase sequence relay.
3. phase sequence automatic identification equipment according to claim 1, it is characterised in that：Also include the first A.C. contactor
(KM1) master of and the second A.C. contactor (KM2), the first A.C. contactor (KM1) and the second A.C. contactor (KM2) touches
It is serially connected in after head parallel connection in the supply line between thermorelay (KR) and output chopper (QF2), also includes being arranged on control
Opening button (TA), positive sequence switch knob (ZXHA) on secondary circuit, negative phase-sequence switch knob (FXHA)；
The main contact of the first A.C. contactor (KM1) and the second A.C. contactor (KM2) tie phase sequence are conversely, the
One A.C. contactor (KM1) A, B, C three-phase main contact two ends are input into supply line and output tri- corresponding connection of A, B, C, the
Two A.C. contactors (KM1) A, B, C three-phase main contact one end is input into tri- corresponding connection of A, B, C, the second exchange with supply line
Catalyst (KM1) A, B, C three-phase main contact other end exports tri- corresponding connection of A, C, B with supply line；
Normally-closed contact and second control secondary fuse (FU of the one end of opening button (TA) by thermorelay (KR)
22) be connected, one end of the second A.C. contactor (KM2) normally-closed contact by the coil of the first A.C. contactor (KM1) with
First controls secondary fuse (FU 21) is connected, and one end of the first A.C. contactor (KM1) normally-closed contact is handed over by second
The coil of stream catalyst (KM2) controls secondary fuse (FU 21) with first and is connected,
One end of the first A.C. contactor (KM1) normally opened contact is connected with the other end of opening button (TA), its other end
It is connected with the other end of the second A.C. contactor (KM2) normally-closed contact；
One end of the second A.C. contactor (KM2) normally opened contact is connected with the other end of opening button (TA), its other end
It is connected with the other end of the first A.C. contactor (KM1) normally-closed contact；
After positive sequence switch knob (ZXHA) is connected with the normally opened contact of positive sequence auxiliary reclay (KZXZ), one end is pressed with separating brake
The other end of button (TA) is connected, and the other end is connected with the other end of the second A.C. contactor (KM2) normally-closed contact；
After negative phase-sequence switch knob (FXHA) is connected with the normally opened contact of negative phase-sequence auxiliary reclay (KFXZ), one end is pressed with separating brake
The other end of button (TA) is connected, and the other end is connected with the other end of the second A.C. contactor (KM2) normally-closed contact；
After positive sequence switch knob (ZXHA) is connected with the normally opened contact of negative phase-sequence auxiliary reclay (KFXZ), one end is pressed with separating brake
The other end of button (TA) is connected, and the other end is connected with the other end of the first A.C. contactor (KM1) normally-closed contact；
After negative phase-sequence switch knob (FXHA) is connected with the normally opened contact of positive sequence auxiliary reclay (KZXZ), one end is pressed with separating brake
The other end of button (TA) is connected, and the other end is connected with the other end of the first A.C. contactor (KM1) normally-closed contact.
4. phase sequence automatic identification equipment according to claim 3, it is characterised in that：Also include overload light (LGZ), defeated
Go out positive sequence display lamp (LSCZX), output negative phase-sequence display lamp (LSCFX)；
After overload light (LGZ) is connected with the normally opened contact of thermorelay (KR), one end controls secondary fusing with first
Device (FU 21) is connected, and the other end controls secondary fuse (FU 22) with second and is connected；
Described output positive sequence display lamp (LSCZX) one end controls secondary fuse (FU 21) with first and is connected, and its other end is simultaneously
It is connected with the first A.C. contactor (KM1) normally opened contact one end and the second A.C. contactor (KM2) normally opened contact one end, described
Normally opened contact and second control of the other end of one A.C. contactor (KM1) normally opened contact by positive sequence auxiliary reclay (KZXZ)
Secondary fuse (FU 22) is connected, and the other end of the second A.C. contactor (KM2) normally opened contact is by relay in the middle of negative phase-sequence
The normally opened contact of device (KFXZ) controls secondary fuse (FU 22) with second and is connected；
Described output negative phase-sequence display lamp (LSCFX) one end controls secondary fuse (FU 21) with first and is connected, and its other end is simultaneously
It is connected with the first A.C. contactor (KM1) normally opened contact one end and the second A.C. contactor (KM2) normally opened contact one end, described
Normally opened contact and second control of the other end of one A.C. contactor (KM1) normally opened contact by negative phase-sequence auxiliary reclay (KFXZ)
Secondary fuse (FU 22) is connected, and the other end of the second A.C. contactor (KM2) normally opened contact is by relay in the middle of positive sequence
The normally opened contact of device (KZXZ) controls secondary fuse (FU 22) with second and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620986800.XU CN206020544U (en) | 2016-08-30 | 2016-08-30 | Job site three-phase power supply phase sequence automatic identification equipment |
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| CN201620986800.XU CN206020544U (en) | 2016-08-30 | 2016-08-30 | Job site three-phase power supply phase sequence automatic identification equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291141A (en) * | 2016-08-30 | 2017-01-04 | 中国能源建设集团江苏省电力建设第工程有限公司 | Job site three-phase power supply phase sequence automatic identification equipment |
| CN107884734A (en) * | 2017-10-24 | 2018-04-06 | 广东电网有限责任公司茂名供电局 | A kind of new phase-sequence meter test device |
| CN110797875A (en) * | 2019-11-13 | 2020-02-14 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Boats and ships bank electricity case with external power supply function |
| WO2021109833A1 (en) * | 2019-12-03 | 2021-06-10 | 徐州海伦哲特种车辆有限公司 | Portable automatic phase sequence detection device |
-
2016
- 2016-08-30 CN CN201620986800.XU patent/CN206020544U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291141A (en) * | 2016-08-30 | 2017-01-04 | 中国能源建设集团江苏省电力建设第工程有限公司 | Job site three-phase power supply phase sequence automatic identification equipment |
| CN106291141B (en) * | 2016-08-30 | 2023-08-04 | 中国能源建设集团江苏省电力建设第一工程有限公司 | Automatic phase sequence identification device for three-phase power supply on construction site |
| CN107884734A (en) * | 2017-10-24 | 2018-04-06 | 广东电网有限责任公司茂名供电局 | A kind of new phase-sequence meter test device |
| CN107884734B (en) * | 2017-10-24 | 2023-04-28 | 广东电网有限责任公司茂名供电局 | Phase sequence table testing arrangement |
| CN110797875A (en) * | 2019-11-13 | 2020-02-14 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Boats and ships bank electricity case with external power supply function |
| CN110797875B (en) * | 2019-11-13 | 2021-09-03 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Boats and ships bank electricity case with external power supply function |
| WO2021109833A1 (en) * | 2019-12-03 | 2021-06-10 | 徐州海伦哲特种车辆有限公司 | Portable automatic phase sequence detection device |
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