CN105785220B - A kind of secondary loop in power system regular inspection auxiliary open circuit alert circuit and device - Google Patents
A kind of secondary loop in power system regular inspection auxiliary open circuit alert circuit and device Download PDFInfo
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- CN105785220B CN105785220B CN201610322780.0A CN201610322780A CN105785220B CN 105785220 B CN105785220 B CN 105785220B CN 201610322780 A CN201610322780 A CN 201610322780A CN 105785220 B CN105785220 B CN 105785220B
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- 238000007689 inspection Methods 0.000 title claims abstract description 56
- 239000004020 conductor Substances 0.000 claims abstract description 42
- 238000004804 winding Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- Emergency Alarm Devices (AREA)
Abstract
The present invention provides a kind of secondary loop in power system regular inspection to aid in open circuit alert circuit and device.The secondary loop in power system regular inspection auxiliary includes relay, alarm, the first power supply and second source with open circuit alert circuit, the supply voltage of two power supplys is identical, it is in parallel with second source after the first power supply series connection relay, alarm is connected to the both ends of above-mentioned parallel connection part after connecting with the normally-closed contact of relay, the both ends of above-mentioned parallel connection part are also respectively connected with a connection plug by flexible circuit conductor respectively.The present invention to the protective device of electric system during regular inspection is carried out; it can not only remind relevant staff that the associated contact pin disconnected before regular inspection is recovered to the connection status to before its disconnection; and it is also simple in structure, be easy to implement, be easy to use, it is more practical.
Description
Technical field
The present invention relates to a kind of secondary loop in power system regular inspection auxiliary device, is specifically a kind of electric system secondary returning
Road regular inspection auxiliary open circuit alert circuit and device.
Background technology
In electric system, during the regular inspection to protective device, it usually needs turn-off current or voltage terminal row
Connection sheet, carries out the relevant experiment of electrical quantity dosage or D.C. resistance test job again afterwards.
And after the completion of above-mentioned detection work, the associated contact pin that detection disconnects before need to be recovered to the company to before disconnection
State is connect, to ensure that relevant secondary circuit will not open a way after power transmission.
But it during atual detection, can occur often after the completion of work is detected, forget to recover connection sheet to disconnecting
Connection state before, so that causing above-mentioned secondary circuit to be opened a way.And the power transmission again after secondary circuit open circuit, then have protection
Malfunction, line disconnection and the danger for getting rid of load, will threaten the safe and stable operation of power grid.
And in the prior art, not yet there is the alarm set for being used for being reminded above-mentioned forgetting phenomenon, this is existing
The shortcoming of technology.
The content of the invention
The technical problems to be solved by the invention are, in view of the deficiencies of the prior art, there is provided it is a kind of it is simple in structure, be easy to real
Existing secondary loop in power system regular inspection auxiliary open circuit alert circuit and device, for having worked in the regular inspection to protective device
Cheng Hou, reminds relevant staff that the associated contact pin disconnected before regular inspection is recovered to the connection status to before its disconnection.
In order to solve the above technical problems, aid in being reminded with open circuit the present invention provides a kind of secondary loop in power system regular inspection
Circuit, including relay, alarm, the first power supply and second source, the supply voltage of two power supplys is identical, the first power supply series connection institute
In parallel with second source after the relay stated, alarm is connected to above-mentioned parallel connection part after connecting with the normally-closed contact of relay
Both ends, the both ends of above-mentioned parallel connection part are also respectively connected with a connection plug by flexible circuit conductor respectively.
When carrying out secondary loop in power system regular inspection, staff opens secondary loop in power system curtage end
Son row connection sheet after, by two connection plugs insertion respective terminal row on positioned at both sides hole in, in view of connection sheet be open,
And first power supply and second source supply voltage it is equal, there is no voltage drop on relay, relay is failure to actuate, relay it is normal
Closed contact closes, and second source, alarm are connected with the circuit where the normally-closed contact of relay at this time, and alarm sends alarm
Alerting signal, so that the connection sheet for reminding the respective terminal of relevant staff's correlation secondary circuit to arrange is in disconnection shape at this time
State.
After the connection sheet of the secondary loop in power system curtage terminal block of above-mentioned opening is resumed connection, after
Electric appliance acts, and the normally-closed contact of the relay disconnects, alarm stop alarm.
The alarm includes voice guard and/or light crossing-signal.
Present invention also offers a kind of secondary loop in power system regular inspection aid in open circuit alarm set, including housing and
Secondary loop in power system regular inspection auxiliary open circuit alert circuit as described above, the alarm of the open circuit alert circuit are installed on
On the housing, the relay of the open circuit alert circuit, the first power supply and second source are installed in the housing, which reminds electricity
The connection plug on road is arranged on outside the housing.
Secondary loop in power system regular inspection auxiliary open circuit alarm set is determined including above-mentioned secondary loop in power system
Inspection auxiliary open circuit alert circuit, it aids in whole work(with open circuit alert circuit with above-mentioned secondary loop in power system regular inspection
Can, details are not described herein.In addition, secondary loop in power system regular inspection auxiliary is easy to carry with using with open circuit alarm set.
A drawer for the connection plug described in folding and unfolding is additionally provided with the housing.In this secondary loop in power system
When regular inspection auxiliary is in idle state with open circuit alarm set, two connection plugs can be stored in the drawer, both
Easy to the storage of connection plug, put prevented also from the random of two connection plugs when carrying, it is beautiful and easy to carry, it is more practical.
The upper end of the front apron of the drawer is equipped with two lower U-shaped guide grooves being respectively used to through the flexible circuit conductor,
The opening of two lower U-shaped guide grooves it is vertical upward.The use of lower U-shaped guide groove, drawer is passed through easy to the flexible circuit conductor
Front apron, and then easy to which above-mentioned two connection plug is stored in the drawer.
The housing is equipped with two upper U-shaped guide grooves opposite with the lower U-shaped guide groove position respectively, it is each on
The opening of U-shaped guide groove downwards, each upper U-shaped guide groove and corresponding lower U-shaped guide groove be respectively enclosed to be used for through
The strip groove for the related flexible circuit conductor stated.Each upper U-shaped guide groove is respectively enclosed to be used for through above-mentioned with corresponding lower U-shaped guide groove
Related flexible circuit conductor strip groove, this can prevent the abrasion to flexible circuit conductor to a certain extent.
The secondary loop in power system regular inspection auxiliary is further included for flexible circuit conductor described in folding and unfolding with open circuit alarm set
Bobbin winoler, easy to pack up flexible circuit conductor after, also allowing for the used time lengthens flexible circuit conductor, using flexible.
The bobbin winoler includes three baffles and a shaft, and the shaft is each passed through three baffles, and three
A baffle is vertically fixed in the shaft, and the both ends of the shaft are installed in rotation on the housing, adjacent gear
A winding space is formed between plate respectively, two winding spaces are respectively used to the flexible circuit conductor described in folding and unfolding；One end peace of the shaft
Have L-shaped handle, which includes cross bar and montant, one end of the montant and the shaft vertical connection, the other end with
The cross bar is connected；One end of the flexible circuit conductor connection power supply is respectively provided with cut-out with connecting the terminals of current conducting wire
Son.The bobbin winoler had both been easy to flexible circuit conductor lengthen again packing up flexible circuit conductor after, also allow for the used time, and it is simple in structure, be easy to
Realize, it is more practical.
The montant of the L-shaped handle is equipped with the first threaded hole, and the housing is equipped with and first threaded hole
The second threaded hole and bolt being used cooperatively.Screw off bolt, disconnect the wire connection terminal, you can adjusted and turned by L-shaped handle
Axis rotates, to achieve the purpose that folding and unfolding flexible circuit conductor；When rotation adjusting finishes, the bolt is set up, you can realize countershaft
Locking, it is easy to use, it is more practical.
The bolt is fixed on by connector on the housing, can effectively prevent the loss of bolt.
Compared with prior art, the advantage of the invention is that：
(1) secondary loop in power system regular inspection auxiliary open circuit alert circuit of the present invention, including relay, alarm
Device, the first power supply and second source, the supply voltage of two power supplys is identical, electric with second after the first power supply series connection relay
Source is in parallel, and alarm is connected to the both ends of above-mentioned parallel connection part after connecting with the normally-closed contact of relay, above-mentioned parallel connection part
Both ends are also respectively connected with a connection plug by flexible circuit conductor respectively；When carrying out secondary loop in power system regular inspection, staff beats
After the connection sheet for opening secondary loop in power system curtage terminal block, it will be located on two connection plugs insertion respective terminal row
In the hole of both sides, in view of connection sheet is opening and the supply voltage of the first power supply and second source is equal, do not have on relay
Voltage drop, relay is failure to actuate, the normally-closed contact of relay closure, and the normally closed of second source, alarm and relay is touched at this time
Circuit where point is connected, and alarm sends warning reminding signal, to remind the phase of relevant staff's correlation secondary circuit
Answer the connection sheet of terminal block to be in off-state at this time, to avoid after the completion of actually detected work, forget connection sheet is extensive
The situation of the multiple connection state to before disconnecting occurs；
(2) secondary loop in power system regular inspection auxiliary of the present invention includes above-mentioned power train with open circuit alarm set
Secondary circuit regular inspection of uniting auxiliary open circuit alert circuit, it aids in being reminded with open circuit with above-mentioned secondary loop in power system regular inspection
The repertoire of circuit, details are not described herein；In addition, the secondary loop in power system regular inspection auxiliary is easy to open circuit alarm set
Carry and use；
(3) secondary loop in power system regular inspection auxiliary of the present invention is additionally provided with one with the housing of open circuit alarm set
Drawer for the connection plug described in folding and unfolding so that aided in this secondary loop in power system regular inspection with open circuit alarm set
When idle state, two connection plugs can be stored in the drawer, both easy to the storage of connection plug, can also prevented
The random pendulum of two connection plugs, beautiful and easy to carry when only carrying, more practical；
(4) secondary loop in power system regular inspection auxiliary of the present invention is further included for folding and unfolding institute with open circuit alarm set
The bobbin winoler of flexible circuit conductor is stated, and easy to flexible circuit conductor be packed up after, also allowing for the used time lengthens flexible circuit conductor, and can both increase the present invention makes
Flexibility, can also reduce the volume of the present invention, easy to the carrying of the present invention.
It can be seen from the above that compared with prior art, the present invention with prominent substantive distinguishing features and significant progress, it is implemented
Beneficial effect be also obvious.
Brief description of the drawings
Fig. 1 is the circuit theory schematic diagram of alert circuit of the present invention；
Fig. 2 is the structure diagram of secondary loop in power system regular inspection auxiliary of the present invention open circuit alarm set；
Fig. 3 is the enlarged drawing at A shown in Fig. 2；
Fig. 4 is the rearview schematic diagram of the open circuit alarm set of secondary loop in power system regular inspection auxiliary shown in Fig. 2.
Wherein：1st, housing, 1.1, upper U-shaped guide groove, 1.2, pilot hole, 1.3, bolt, 2, open circuit alert circuit, 2.1, after
Electric appliance, 2.2, normally-closed contact, the 2.3, first power supply, 2.4, second source, 2.5, alarm, 2.5.1, voice guard,
2.5.2, light crossing-signal, 2.6, flexible circuit conductor, 2.7, connection plug, 3, drawer, 3.1, front apron, 3.1.1, lower U-shaped guide groove, 4,
Bobbin winoler, 4.1, first baffle, 4.2, second baffle, 4.3, third baffle, 4.4, shaft, 4.6, winding space, 5, bearing block,
6th, L-shaped handle, 6.1, cross bar, 6.2, montant, 7, connector, 8, secondary circuit regular inspection when the curtage terminal block that disconnects
Connection sheet, 9, wire connection terminal, 10, wiring end cover, 11, wire connection terminal.
Embodiment
To make technical scheme and advantage clearer, below in conjunction with the attached drawing of the present invention, to the present invention's
Technical solution is clearly and completely described.
As shown in Figure 1, a kind of secondary loop in power system regular inspection auxiliary open circuit alert circuit 2 of the present invention, including after
Electric appliance 2.1, alarm 2.5, the first power supply 2.3 and second source 2.4, the supply voltage of two power supplys is identical, and the first power supply 2.3 is gone here and there
It is in parallel with second source 2.4 after the connection relay 2.1, after alarm 2.5 is connected with the normally-closed contact 2.2 of relay 2.1
The both ends of above-mentioned parallel connection part are connected to, the both ends of above-mentioned parallel connection part are also respectively connected with a wiring by flexible circuit conductor 2.6 respectively and insert
First 2.7.The alarm 2.5 includes voice guard 2.5.1 and light crossing-signal 2.5.2（Using LED light）.To reduce electric appliance
Two electric elements of the above sound alarm 2.5.1 and light crossing-signal 2.5.2 can be used a sound-light alarm by the use of element
Device is substituted.
When carrying out secondary loop in power system regular inspection, break when two connection plugs 2.7 are connected on secondary circuit regular inspection respectively
The both ends of the connection sheet 8 for the curtage terminal block opened, in view of connection sheet is opening and the first power supply 2.3 and the second electricity
The supply voltage in source 2.4 is equal, does not have voltage drop on relay 2.1, and relay 2.1 is failure to actuate, the normally-closed contact of relay 2.1
2.2 close, and the circuit where the normally-closed contact 2.2 of second source 2.4, alarm 2.5 and relay 2.1 is connected at this time, is alarmed
Device 2.5 sends warning reminding signal, so as to remind the respective terminal of relevant staff's correlation secondary circuit arrange connection sheet this
When be in off-state.Once the connection sheet of the secondary loop in power system curtage terminal block of above-mentioned opening is resumed
After connection, relay 2.1 acts, and the normally-closed contact 2.2 of the relay 2.1 disconnects, 2.5 stop alarm of alarm, Jin Erqi
To reminding effect.
Present embodiment additionally provides a kind of secondary loop in power system regular inspection auxiliary open circuit alarm set, including
Housing 1 and as indicated with 1 secondary loop in power system regular inspection auxiliary with open circuit alert circuit 2, as shown in Figure 2, Figure 3 and Figure 4,
The alarm 2.5 of the open circuit alert circuit 2 is installed on the housing 1, relay 2.1, the first power supply of the open circuit alert circuit 2
2.3 and second source 2.4 be installed on the housing 1 in, the connection plug 2.7 of the open circuit alert circuit 2 is arranged on outside the housing 1.
The flexible circuit conductor 2.6 is each passed through the pilot hole 1.2 being arranged on housing 1.One is additionally provided with the housing 1 and is used for folding and unfolding
The drawer 3 of the connection plug 2.7.The upper end of the front apron 3.1 of the drawer 3 is respectively used to through described equipped with two
The opening of the lower U-shaped guide groove 3.1.1 of flexible circuit conductor 2.6, two lower U-shaped guide groove 3.1.1 it is vertical upward.The housing 1
It is equipped with two upper U-shaped guide grooves 1.1 opposite with the lower U-shaped guide groove 3.1.1 positions respectively, each upper U-shaped guide groove
1.1 opening downwards, each upper U-shaped guide groove 1.1 and corresponding lower U-shaped guide groove 3.1.1 be respectively enclosed to be used for through
The strip groove of above-mentioned related flexible circuit conductor 2.6.
Secondary loop in power system regular inspection auxiliary of the present invention includes above-mentioned electric system with open circuit alarm set
Secondary circuit regular inspection auxiliary open circuit alert circuit 2, it aids in being reminded with open circuit with above-mentioned secondary loop in power system regular inspection
The repertoire of circuit 2, details are not described herein.
In addition, the use of drawer 3 so that aid in being in the spare time with open circuit alarm set in this secondary loop in power system regular inspection
During configuration state, two connection plugs 2.7 can be stored in the drawer 3, both easy to the storage of connection plug 2.7,
The random pendulum of two connection plugs 2.7, beautiful and easy to carry when preventing carrying.When needing to use this open circuit alarm set, take out
Go out drawer 3, take out connection plug 2.7 and accordingly connected, installation with it is very easy to use.
In addition, the use of above-mentioned lower U-shaped guide groove 3.1.1, the front apron easy to the flexible circuit conductor 2.6 through drawer 3
3.1, and then easy to which above-mentioned two connection plug 2.7 is stored in the drawer 3；Each upper U-shaped guide groove 1.1 with it is corresponding under
U-shaped guide groove 3.1.1 is respectively enclosed to, for the strip groove through above-mentioned related flexible circuit conductor 2.6, to a certain extent to prevent
Only to the abrasion of flexible circuit conductor 2.6.It is simple in structure, practical and be easy to implement.
In addition, in the present embodiment, secondary loop in power system regular inspection auxiliary is also wrapped with open circuit alarm set
Include the bobbin winoler 4 for flexible circuit conductor described in folding and unfolding 2.6, both be easy to flexible circuit conductor 2.6 is packed up after, also allow for the used time again will be soft
Conducting wire 2.6 lengthens.The bobbin winoler 4 includes shaft 4.4 and three baffles：First baffle 4.1, second baffle 4.2 and third baffle
4.3.The shaft 4.4 is each passed through three baffles, and three baffles are vertically fixed in the shaft 4.4, institute
The both ends for stating shaft 4.4 are installed in rotation on the housing 1, form a winding space 4.6 between adjacent screen respectively,
Two winding spaces 4.6 are respectively used to the flexible circuit conductor 2.6 described in folding and unfolding；One end of the shaft 4.4 is equipped with L-shaped handle 6, the L-shaped
Handle 6 includes cross bar 6.1 and montant 6.2, one end of the montant 6.2 and 4.4 vertical connection of shaft, the other end and the institute
The cross bar 6.1 stated is connected.The montant 6.2 of the L-shaped handle 6 is equipped with the first threaded hole, the housing 1 be equipped with it is described
The first threaded hole the second threaded hole and bolt 1.3 that are used cooperatively.
In the present embodiment, each flexible circuit conductor 2.6 is worked as connecting one end of power supply and being respectively provided with cut-out and connect
The wire connection terminal 9 and wire connection terminal 11 that the two of preceding flexible circuit conductor are used cooperatively；Its middle connecting terminal 11, which is separately positioned on, is around in shaft
The end of one end of the remote connection plug 2.7 of the related flexible circuit conductor 2.6 on 4.4.In addition, flexible circuit conductor 2.6 is around in shaft 4.4
Part both ends in be used to one end of associated connections terminal be installed and be fixed on shaft 4.4, i.e., be used on each flexible circuit conductor 2.6
One end of installation wire connection terminal 11 is fixedly installed in the shaft 4.4, this is easy to by soft described in 4.4 folding and unfolding of shaft
Conducting wire 2.6.
In addition, the wiring opposite with the wire connection terminal 9 and 11 position of wire connection terminal is equipped with the rear wall of housing 1
End cap 10, as shown in figure 4, opening the wiring end cover 10, is convenient for disconnection and the company of above-mentioned wire connection terminal 9 and wire connection terminal 11
Connect operation.
In use, screw off bolt 1.3, disconnect wire connection terminal 9 and wire connection terminal 11, you can shaft is adjusted by L-shaped handle 6
4.4 rotate, and achieve the purpose that folding and unfolding flexible circuit conductor 2.6.When rotation adjusting finishes, the bolt 1.3 is set up, you can realization pair
The locking of shaft 4.4, and then can prevent the broken volume of the coil for the flexible circuit conductor 2.6 being wound in each winding space 4.6, so as to when previous
Smoothly used with next, it is more practical.
The loss of bolt 1.3, the bolt 1.3 are fixed by connector 7 when in the present embodiment, to prevent from using
On the housing 1.The connector 7 uses STAINLESS STEEL CHAINS.
To sum up, during regular inspection is carried out to the protective device of electric system, relevant staff can not only be reminded
By the associated contact pin disconnected before regular inspection recover to its disconnect before connection status, and it is also simple in structure, be easy to implement, just
It is more practical in use.
Embodiment of above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although with reference to foregoing implementation
The present invention is described in detail in mode, it will be understood by those of ordinary skill in the art that：It still can be to foregoing each
Technical solution described in embodiment is modified, or carries out equivalent substitution to which part technical characteristic；And these are repaiied
Change or replace, the essence of appropriate technical solution is departed from the scope of each embodiment technical solution of the present invention.
Claims (7)
1. a kind of secondary loop in power system regular inspection auxiliary open circuit alarm set, it is characterised in that including housing and electric power
Secondary system circuit regular inspection auxiliary open circuit alert circuit, secondary loop in power system regular inspection auxiliary remind electricity with open circuit
Road includes relay, alarm, the first power supply and second source, and the supply voltage of two power supplys is identical, described in the series connection of the first power supply
Relay after it is in parallel with second source, alarm is connected to the two of above-mentioned parallel connection part after connecting with the normally-closed contact of relay
End, the both ends of above-mentioned parallel connection part are also respectively connected with a connection plug by flexible circuit conductor respectively；
The alarm installation of the open circuit alert circuit on the housing, the relay of the open circuit alert circuit, the first power supply and the
Two power supplys are installed in the housing, and the connection plug of the open circuit alert circuit is arranged on outside the housing；
The secondary loop in power system regular inspection auxiliary with open circuit alarm set further include for flexible circuit conductor described in folding and unfolding around
Line device；
The bobbin winoler includes three baffles and a shaft, and the shaft is each passed through three baffles, three gears
Plate is vertically fixed in the shaft, and the both ends of the shaft are installed in rotation on the housing, adjacent screen it
Between form a winding space respectively, two winding spaces are respectively used to the flexible circuit conductor described in folding and unfolding；One end of the shaft is equipped with L-shaped
Handle, the L-shaped handle include cross bar and montant, one end of the montant and the shaft vertical connection, the other end with it is described
Cross bar be connected；One end of the flexible circuit conductor connection power supply is respectively provided with cut-out with connecting the wire connection terminal of current conducting wire.
2. secondary loop in power system regular inspection auxiliary open circuit alarm set according to claim 1, it is characterised in that institute
The alarm stated includes voice guard and/or light crossing-signal.
3. secondary loop in power system regular inspection auxiliary open circuit alarm set according to claim 1, it is characterised in that institute
A drawer for the connection plug described in folding and unfolding is additionally provided with the housing stated.
4. secondary loop in power system regular inspection auxiliary open circuit alarm set according to claim 3, it is characterised in that institute
The upper end for stating the front apron of drawer is equipped with two lower U-shaped guide grooves being respectively used to through the flexible circuit conductor, and two lower U-shapeds are led
To groove opening it is vertical upward.
5. secondary loop in power system regular inspection auxiliary open circuit alarm set according to claim 4, it is characterised in that institute
The housing stated is equipped with two upper U-shaped guide grooves opposite with the lower U-shaped guide groove position respectively, each upper U-shaped guide groove
Opening downwards, each upper U-shaped guide groove and corresponding lower U-shaped guide groove are respectively enclosed to for through above-mentioned related soft
The strip groove of conducting wire.
6. secondary loop in power system regular inspection auxiliary open circuit alarm set according to claim 1, it is characterised in that institute
The montant for stating L-shaped handle is equipped with the first threaded hole, and the housing is equipped with what is be used cooperatively with first threaded hole
Second threaded hole and bolt.
7. secondary loop in power system regular inspection auxiliary open circuit alarm set according to claim 6, it is characterised in that institute
The bolt stated is fixed on by connector on the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610322780.0A CN105785220B (en) | 2016-05-16 | 2016-05-16 | A kind of secondary loop in power system regular inspection auxiliary open circuit alert circuit and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610322780.0A CN105785220B (en) | 2016-05-16 | 2016-05-16 | A kind of secondary loop in power system regular inspection auxiliary open circuit alert circuit and device |
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| CN105785220A CN105785220A (en) | 2016-07-20 |
| CN105785220B true CN105785220B (en) | 2018-05-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106546866B (en) * | 2016-10-21 | 2019-06-21 | 北京首都机场动力能源有限公司 | A kind of method and device for testing secondary circuit pressing plate on-off |
| CN110286295B (en) * | 2019-05-13 | 2021-07-06 | 国家电网有限公司 | Direct current feed screen branch CT polarity testing device and method |
| CN113296026B (en) * | 2021-05-19 | 2022-11-04 | 广东电网有限责任公司 | Secondary circuit monitoring system |
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| CN203479953U (en) * | 2013-10-14 | 2014-03-12 | 国家电网公司 | Alarming device for open circuit of current transformer |
| CN204964738U (en) * | 2015-09-22 | 2016-01-13 | 国网电网公司 | Current transformer secondary circuit precaution device of opening a way |
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|---|---|
| CN105785220A (en) | 2016-07-20 |
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