CN1308239A - Light, digital and phonetic warning system for transformer station - Google Patents
Light, digital and phonetic warning system for transformer station Download PDFInfo
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- CN1308239A CN1308239A CN 01102769 CN01102769A CN1308239A CN 1308239 A CN1308239 A CN 1308239A CN 01102769 CN01102769 CN 01102769 CN 01102769 A CN01102769 A CN 01102769A CN 1308239 A CN1308239 A CN 1308239A
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Abstract
The present invention discloses a light, digital and speech alarm system for electric substation, including control loop, closing loop, phase A, phase B and plase C voltage loop and alarm centre. Said alarm system features high sensitivity, small volume, light weight, low electric consumption, no contact, long life and accurate alarm. It adopts advanced circuit design and digital technique, so that it is applicable to voltage monitoring of various electric substations, switches, switch cabinet, potential transformer and watt-hour meter.
Description
The present invention relates to the transformer station of power industry and special-purpose switch, switch cubicle, voltage transformer (VT), watt-hour meter metering monitoring voltage, supervisory system, is transformer station's light, numeral, phonetic warning system specifically.
The power industry of the existing domestic production switch cubicle of switch cubicle and import, all electric equipments all adopt alarm bell or buzzer warning, report to the police with alarm window on central signaling panel, are provided with any type of alarm.Equally for transformer station not tube apparatus what, have only an alarm bell, a hummer, hummer rings behind the switch breaking, and alarm bell rings during line-to-ground, needs the person on duty to go to check to be which warning, can not provide information to the person on duty exactly, cause temporal delay to accident treatment.And the chief drawback is to find traditional circuit design in actual motion, wherein whether control loop broken string can only lean on the person on duty with the naked eye to go to see earlier to break, close switch insurance all is installed in the lower floor or the upper strata, ground of switch cubicle mostly, especially be subjected to moisture effect and oxidation serious, and the person on duty checks quite difficult, agnogenic sometimes just disconnected.Can not successful reclosing when the action of circuit breaking, reclosing, also have voltage transformer (VT), be the major equipment that transformer station mainly measures, protects, monitors, but all transformer stations are to alarm system and think little of.Most of transformer stations work as the disconnected phase of secondary circuit or two phase times all can not be reported to the police, and need further perfect.
The objective of the invention is for solving the problem that above-mentioned technology exists, and the transformer station of various major control power supplys, power switch, monitoring voltage, watt metering that a kind of transformer station is provided is with light, numeral, phonetic warning system, by each way switch of transformer station is all set up alarm, improve the reliability of power supply.
For achieving the above object, technical scheme of the present invention is finished by following measure: transformer station's light, numeral, phonetic warning system, it comprises control loop, closing circuit, A phase voltage loop, B phase voltage loop, C phase voltage loop and center alarm are formed, wherein said control loop, closing circuit adopts the surge voltage protection element, the resistance step-down, polar protective circuit, filtering, mu balanced circuit, sampling indication loop, photoelectronic coupler, light warning logic judging circuit and voice alarm circuit, be connected to speech IC by the audio alert logic judging circuit, Sp+ by integrated circuit, Sp-is connected to the voice amplifying circuit respectively, and connects loudspeaker; Another road connects distant place alarming logic decision circuitry, distant place warning executive circuit, and warning executive circuit in a distant place is connected to 9 needle serial ports respectively, 15 needle serial ports; Wherein A, B, C phase voltage adopt the sampling of 60V alternating voltage, promote circuit, photoelectricity coupling, audio alert trigger circuit by surge voltage protection, resistance step-down, full-wave rectification, filter regulator circuit, sampling indicating circuit, photoelectricity coupling, light warning logic judging circuit, light indication, divide two-way by the audio alert trigger circuit: the one tunnel connects audio alert logic judging circuit and voice alarm circuit; Another road connects distant place alarming logic decision circuitry, distant place warning executive circuit, is connected to 9 needle serial ports and 15 needle serial ports respectively by distant place warning executive circuit, connects speech IC by voice alarm circuit; Described center alarm is by 9 needle serial port CK3 indication taking alarm, optical coupling circuit and promote circuit; By promoting circuit is three tunnel outputs: the one tunnel through audio alert logic judging circuit and audio alert trigger circuit, are connected to speech IC, are connected to voice amplifying circuit and loudspeaker respectively by speech IC Sp+, Sp-; Two the tunnel connect distant place alarming logic declares the relay road, promotes circuit, distant place warning circuit breaker, a distant place 15 needle serial ports of reporting to the police and meets RTU; Three the tunnel connect digital warning logic judging circuit, promotion circuit, connect digital indicator respectively by promoting circuit; Wherein alarm 6 tunnel is the preserved signal source interface: connect optical coupling and promoted circuit by normal opened contact; Connect after the digital signal serial connection and promote circuit, warning indicating circuit and optical coupling, be connected to the promotion circuit, divide three the tunnel to be connected to above-mentioned three tunnel identical outputs by promoting circuit by optical coupling.
Advantage of the present invention and effect.
1, transformer station adopts advanced circuit design with light, numeral, phonetic warning system, has selected digital technology and preferred devices for use.
2, compare with traditional warning system, have that volume is little, in light weight, highly sensitive, power-saving, contactless, the life-span is long, report to the police accurately.
3, improved the ladder of management of equipment, accident rate descends, economic benefit improves, and alleviates operator on duty's labour intensity, has improved the reliability of power supply.
4, warning system of the present invention be with the people can not for latent defect find that early the sunken string of major accident is disappeared makes major break downization little in bud, minor accidentization does not have, and avoids loss.
Embodiment makes specific description to the present invention in conjunction with the accompanying drawings.
Fig. 1 is transformer station's light, numeral, phonetic warning system circuit block diagram.
Fig. 2 is the alarm center circuit block diagram.
Fig. 3 is Fig. 1 phonetic warning system circuit theory diagrams.
Fig. 4 is 9 needle serial port output circuit figure.
Fig. 5 is 15 needle serial port output circuit figure.
Fig. 6 is the alarm center circuit theory diagrams.
Fig. 7 is alarm center 15 needle serial port output circuit figure.
Fig. 8 is the nixie display circuit theory diagrams.
With reference to Fig. 1 transformer station light, numeral, phonetic warning system, comprise control loop, closing circuit, the A voltage circuit, the B voltage circuit, the C voltage circuit is formed, control loop adopts direct current 220V voltage, sampling is connected in the fuse cutout outlet, enter warning system, by surge voltage protection element 1, when instantaneous rising of external voltage or thunder and lightning interference, short-circuit condition appears, high voltage drop is arrived the safe voltage value, through sampling voltage drop element 2, after the sampling voltage reduction, carry out polarity protection by polar protective circuit 3, through filtering, after mu balanced circuit 4 voltage stabilizings, the decompression that gets by sampling indication 5 indication sample circuits, connect light warning logic judging circuit 7 by photoelectronic coupler 6, promote by light warning indication 8, photoelectronic coupler 9 separates each element circuit, output to audio alert trigger circuit 10,10 fens two-way of audio alert trigger circuit: the one tunnel is audio alert logic judging circuit 11, is connected to audio alert trigger circuit 12, connects speech IC 17 by audio alert trigger circuit 12, Sp+ by integrated circuit 17, Sp-connects voice amplifying circuit 18 respectively, and connects loudspeaker; Another road is that distant place alarming logic decision circuitry 13 connects distant place warning executive circuit 14, is connected to 9 needle serial ports 15 respectively and 15 needle serial ports 16 remove RTU by distant place warning executive circuit 14.
Wherein closing circuit sampled voltage and control loop all are direct current 220V, and its circuit structure and control loop are identical, the description of Therefore, omited closing circuit.
A phase voltage loop is to be connected on voltage insurance output terminal by the sampling of A phase voltage, adopt the 60V alternating voltage to be connected on surge voltage protection element 19, resistance step-down 20, full-wave rectifying circuit 21, filtering, mu balanced circuit 27, sampling indication 23, photoelectricity coupling 24, light warning logic judging circuit 25, light indication 26, photoelectricity coupling 27, audio alert trigger circuit 28 are by 28 fens two-way of audio alert trigger circuit; One the tunnel connects audio alert logic judging circuit 29, voice alarm circuit 30; Another road connects distant place alarming logic decision circuitry 31, distant place warning executive circuit 32, connects 9 needle serial ports 33, duty room and 15 needle serial ports 34 respectively by distant place warning executive circuit 32, connects speech IC 17 by voice alarm circuit 30.
Wherein the B phase voltage is identical with A phase sampler voltage with the C phase voltage, and hydraulic circuit is identical mutually with A for its circuit structure, the description of Therefore, omited B phase, C phase voltage circuit.
Fig. 2 shows the alarm center circuit block diagram, receive 9 needle serial ports, 35 output terminals of branch alarm with netting twine, being linked into alarm center 9 needle serial ports 1 pin connects first via alarm and goes into a little, by alerting signal pilot lamp 36, after 37 couplings of light coupling device, divide three tunnel outputs by triode promotion 38 by emitter: a routing voice alarming logic decision circuitry 39 and audio alert trigger circuit 40, connect speech IC 49 by alarm voice trigger circuit 40, connect power amplifier integrate circuit 50 respectively and connect loudspeaker by Sp+, Sp-; Two route distant place alarming logic decision circuitry 41, promote circuit 42, distant place alarm relay 43 and connect a distant place 15 needle serial ports 44 of reporting to the police and remove RTU; Three routes numerals alarming logic is judged 45, is promoted circuit 46, connects 1, No. 2 digital indicator 47 and 48 respectively.
Wherein 2 of alarm, 3,4,5 pin connect the second the tunnel, Third Road, the four tunnel, the five tunnel identical with first via circuit structure, the description of Therefore, omited the second to the five tunnel.
The signal source interface of alarm the six tunnel for reserving:
Connect optical coupling device 52 by normal opened contact 51, promote circuit 58; Digital signal connects promotion circuit 55, warning indicating circuit 56, optical coupling device 57 by the integrated circuit 53 and 54 of serial connection, on optical coupling device optical coupling that connects normal opened contact and the node that promotes circuit, connect audio alert logic judging circuit 39, alarm trigger circuit 40 in 58 minutes three the tunnel: the one tunnel by promoting circuit, connect speech IC 49, connect power amplifier integrate circuit 50 and connect loudspeaker by Sp+, Sp-; Two the tunnel be distant place alarming logic decision circuitry 41, promote circuit 42, distant place alarm relay 43 connects 15 needle serial ports 44 and removes RTU; Three the tunnel is that digital warning logic judging circuit 45, promotion circuit 46 also connect digital indicator 47 and 48 respectively.
Fig. 3 shows Fig. 1 phonetic warning system circuit theory, it is by control loop, closing circuit, and A phase voltage loop, B phase voltage loop, C phase voltage loop are formed, and described control loop is that direct current 220V voltage sampling is connected on fuse cutout FU
1, FU
2In the outlet, enter alarm, positive polarity meets piezoresister 1VR
1With resistance 1R
1The node of wiring on, piezoresister 1VR
1Be the surge voltage protection element, resistance 1R
1Be sampling voltage drop element, 1R
1The other end and diode 1D
1Anodal connection, 1VR
1The other end and diode 1D
2The negative pole sampling negative pole that is connected, diode 1D
2Positive pole meets capacitor 1C
1Be high frequency filter element part, capacitor 1C
2Be the low frequency filtering element, by diode 1D
1, 1D
2Form polar protective circuit, capacitor 1C
1, 1C
2With diode 1D
1Negative pole, 1D
2Positive pole carries out parallel connection, stabilivolt 1DW
1Negative pole is connected in parallel on diode 1D
1Negative pole, anodal termination 1D
2Positive pole is sampling voltage stabilizing element, diode 1D
1Negative pole and resistance 1R
2Series connection, resistance 1R
2With light emitting diode 1LRD
1Anodal connection, 1LED
1Negative pole and photoelectronic coupler 1IC
1The anodal series connection of light emitting diode, negative pole and diode 1D
2Positive pole is connected to form sampling work indication loop, photoelectronic coupler 1IC
1Phototriode BG collector supply Vcc, emitter connecting resistance 1R
3With triode 1GB
1Base stage links to each other, and collector connects power Vcc, emitter connecting resistance 1R
4With resistance 1R
6Series connection, resistance 1R
4With resistance 1R
6Node parallel resistance 1R
5Ground connection, resistance 1R
6With integrated circuit 1IC
2" not gate " input end connects to form logic judging circuit, integrated circuit 1IC
2" not gate " output terminal and resistance 1R
7Connect logical 1R
7Be connected to triode 1BG
2Base stage, collector connects power Vcc, emitter connecting resistance 1R
8With light emitting diode 1LED
2Anodal continuous, negative pole and photoelectronic coupler 1IC
3The positive pole of light emitting diode D link to each other, minus earth is by photoelectronic coupler 1IC
1Phototriode BG and resistance 1R
3, triode 1BG
1, resistance 1R
4-1R
6, integrated circuit 1IC
2, resistance 1R
7With triode 1BG
1, resistance 1R
8, light emitting diode 1LED
2, optical coupling device 1IC
3, light emitting diode D forms light warning circuit, photoelectronic coupler 1IC
3The collector of phototriode BG connect power Vcc, emitter connecting resistance 1R
9With triode 1BG
3Emitter series resistor 1R
10With 1R
12, on the node between two resistance and connecting resistance 1R
11Ground connection, resistance 1R
12With integrated circuit 1IC
4" not gate " input end connects, integrated circuit 1IC
4" not gate " is the audio alert logic judging circuit, 1IC
4" not gate " output termination K switch
1An end, K
1The other end and K switch
6Connect K
6Other end ground connection form audio alert trigger circuit, speech IC 1IC
7Vcc connect positive source, Vss connects power cathode, K switch
6With K switch
1Connect K switch
7With K switch
2Connect K switch
3With K switch
8Connect K switch
9With K switch
4Connect K switch
10With K switch
5Connect, by sound circuit 1IC
7Sp+ meet electric capacity 1C
3, by resistance 1R
19Be connected to integrated circuit 1IC
82 pin, resistance 1R
17Be connected to integrated circuit 1IC
82,3 pin form integrated circuit 1IC
8The audio balance fan-in network, integrated circuit 1IC
81,8 pin unsettled, 4 pin ground connection, 5 pin connecting resistance 1R
18With electric capacity 1C
8Series connection, electric capacity 1C
8Other end ground connection, resistance 1R
18The other end and electric capacity 1C
7The anodal connection, negative pole termination loudspeaker Y, loudspeaker Y other end ground connection is formed audio output circuit, integrated circuit 1IC
86 pin meet capacitor 1C
6One end, other end ground connection, power Vcc meets integrated circuit 1IC
8With electric capacity 1C
6On the node, integrated circuit 1IC
87 pin meet electric capacity 1C
5One end, other end ground connection, sound circuit 1IC
7Sp-respectively by electric capacity 1C
4, resistance 1R
16Meet integrated circuit 1IC
83 pin, 4 pin ground connection; The second road triode 1BG
3Emitter series resistor 1R
13, 1R
15, connecting resistance 1R on the node between two resistance
14Ground connection, resistance 1R
15With integrated circuit 1IC
5" not gate " input end connects, output terminal and integrated circuit 1IC
6" not gate " input end connects, 1IC
6" not gate " output termination triode 1BG
4Base stage, 1BG
4Emitter meet triode 1BG
5Base stage, 1BG
4, 1BG
5Collector connect power Vcc, triode 1BG after connecting
5Emitter is succeeded electrical equipment J
1, relay J
1Coil other end ground connection, at the relay coil two ends and meet diode 1D
3, by integrated circuit 1IC
5With 1IC
6Form distant place alarming logic decision circuitry, by triode 1BG
4With 1BG
5Form compound circuit and relay J
1Form distant place warning executive circuit.See that Fig. 4 is 9 needle serial port output circuit figure, by relay J
1Normal opened contact J
1-1-1 and relay normally open J
2-1-1 contact, normal opened contact J
3-1-1 contact, normal opened contact J
4-1-1, normal opened contact J
5-1-1 links to each other, and connects power Vcc after the connection.Relay J
1Normal opened contact J
1-1-2 meets 9 needle serial port CK
11 pin, relay J
2Normal opened contact J
2-1-2 connects 6 pin of 9 needle serial port CK1, relay J
3Normal opened contact J
3J
3-1-2 meets 9 needle serial port CK
17 pin, relay J
4Normal opened contact J
4-1-2 meets 9 needle serial port CK
12 pin, relay J
5Normal opened contact J
5-1-2 meets 9 needle serial port CK
18 pin, 5 pin ground connection are connected to the duty room concentrated alarm with netting twine.See Fig. 5 relay normally open contact J
1-2-1 meets 15 needle serial port CK
22 pin, relay normally open contact J
2-2-2 meets 15 needle serial port CK
210 pin, relay normally open contact J
3-2-1 meets 15 needle serial port CK
23 pin, relay normally open contact J
3-2-2 meets 15 pin string CK
211 pin, relay normally open contact J
4-2-1 meets 15 needle serial port CK
212 pin, relay normally open contact J
4-2-2 meets 15 needle serial port CK
214 pin, relay normally open contact J
5-2-2 meets 15 needle serial port CK
215 pin, send RTU to handle after, send control room computer center to handle by other carrier such as carrier terminal equipment, fiber optic, digital microwave, spread spectrum receivers etc. after, send the control room workstation computer to monitor by routine dispatching person.
Closing circuit among Fig. 3, because of sampled voltage and control loop all are direct current 220V, the circuit structure of its design is identical with control loop, and the Therefore, omited is to the description of closing circuit.
The A phase that comprises among Fig. 3, B phase, C phase voltage loop are all adopted and are exchanged 60V voltage, and its circuit design is that example is described with A phase voltage loop.The sampling of A phase voltage is connected on voltage insurance output terminal, enters the alarm input end, and the 60V alternating voltage is connected on A phase voltage dependent resistor (VDR) 3VR
1, on another termination sampling incoming line N, resistance 3R
1For voltage drop element output meets diode 3D
1Positive pole, negative pole and diode 3D
2Negative pole connects, diode 3D
2Positive pole connect with the N line, by diode 3D
1, 3D
2Form full-wave rectifying circuit, electric capacity 3C
1One end and diode 3D
1, 3D
2Connect electric capacity 3C
1The other end connects with the N line, electric capacity 3C
1Be the High frequency filter element, electric capacity 3C
2With 3C
1Parallel connection, electric capacity 3C
2Be the low frequency filtering element, voltage stabilizing diode 3DW
1With electric capacity 3C
2Parallel connection is sampling voltage stabilizing element, diode 3D
1With resistance 3R
2Series connection, 3R
2With light emitting diode 3LED
1The anodal connection, negative pole meets photoelectronic coupler 3IC
1The positive pole of light emitting diode, negative pole is connected with sampling N line, by resistance 3R
2, light emitting diode 3LED
1, photoelectronic coupler 3IC
1, light emitting diode forms the normal indicating circuit of sampling, by photoelectronic coupler 3IC
1The phototriode collector connects power Vcc, and emitter is by resistance 3R
3Meet triode 3BG
1Base stage, collector connects power Vcc, and emitter meets the resistance 3R that is connected in series
4, 3R
6, by 3R
4, 3R
6Between two resistance on the node and connecting resistance 3R
5Ground connection is by resistance 3R
6With integrated circuit 3IC
2" not gate " input end connects to form logic judging circuit, integrated circuit 3IC
2" not gate " output terminal is by resistance 3R
7Be connected to triode 3BG
2Base stage, collector connects power Vcc, emitter is by resistance 3R
8With 3LED
2The light emitting diode positive pole is connected to photoelectronic coupler 3IC
3The positive pole series connection of light emitting diode, minus earth is by photoelectronic coupler 3IC
1Every triode of light and resistance 3R
3, triode 3BG
1, resistance 3R
4-3R
6, integrated circuit 2IC
2, resistance 3R
7With triode 3BG
2, resistance 3R
8, light emitting diode 3LED
2, photoelectronic coupler light emitting diode form the light warning circuit, by photoelectronic coupler 3IC
3Phototriode 3BG
3Collector connects power Vcc, and emitter output is divided into two-way: the first via is by 3BG
3Emitter connecting resistance 3R
10With 3R
12Series connection, connecting resistance 3R on node between two resistance
11And ground connection.By resistance 3R
12With integrated circuit 3IC
4" not gate " input end connects, 3IC
4" not gate " is the audio alert logic judging circuit, " not gate " output termination K switch
3One end, another termination K switch
8, K switch
8An end ground connection form the audio alert trigger circuit; The second the tunnel passes through 3BG
3Emitter connecting resistance 3R
13With resistance 3R
15Series connection is on node between two resistance and connecting resistance 3R
14And ground connection, by resistance 3R
15With integrated circuit 3IC
5" not gate " input end connects, output terminal and integrated circuit 3IC
6" not gate " input end connects, 3IC
6" not gate " output termination triode 3BG
4Base stage, pass through 3BG
4Emitter meets triode 3BG
5Base stage, 3BG
4With 3BG
5Collector connect power Vcc after connecting, by triode 3BG
5Emitter is succeeded electrical equipment J
3, relay J
3Coil other end ground connection is in relay J
3Coil two termination diode 3D
3, by integrated circuit 3IC
5, 3IC
6Form distant place alarming logic decision circuitry, by triode 3BG
4, 3BG
5Form compound circuit and relay J
3Form distant place warning executive circuit.
Described B phase, C phase sampler voltage are identical with A phase sampler voltage, and the Therefore, omited is to the description of B phase, C phase voltage loop circuit structure.
Wherein the second the road to the five the tunnel is identical with first via circuit structure.
Fig. 6 is a center warning circuit principle assumption diagram, receives 9 needle serial port CK of branch alarm with netting twine
3On the output interface, be linked on center alarm 9 needle interfaces, serial ports 1 pin connects first via alarm goes into a little, by resistance 6R1 sending and receiving optical diode 6LED
1Positive pole, negative pole termination photoelectronic coupler 6IC
1The light emitting diode positive pole, negative pole is by serial ports 5 pin ground connection, photoelectronic coupler 6IC
1The phototriode collector connect power Vcc.Pass through resistance 6R by emitter
2Meet triode 6BG
1Base stage, collector connects power Vcc, and emitter divides three tunnel outputs: one tunnel output is through resistance 6R
3, 6R
5Series connection integrated circuit 6IC
2The input end of " not gate ", output termination K switch
12, K switch
12Another termination speech IC 6IC
7K switch
13One end, other end ground connection is by resistance 6R
3, 6R
5Between on the contact and connecting resistance 6R
4Ground connection; Two the tunnel through resistance 6R
6, 6R
8Series connection is between two contacts and connecting resistance 6R
7Ground connection, resistance 6R
8Output termination integrated circuit 6IC
3" not gate " input end, output termination integrated circuit 6IC
4" not gate " input end, output terminal is by resistance 6R
9Insert triode 6BG
2Base stage, collector connects power Vcc, and emitter meets triode 6BG
3Base stage, collector connects power Vcc, emitter is succeeded electrical equipment J
6Coil is by relay J
6Coil two termination diode 6D
1, relay J
6Coil other end ground connection; Three the tunnel through resistance 6R
10, 6R
12Series connection is between two contacts and connecting resistance 6R
11, by resistance 6R
12Meet integrated circuit 6IC
5" not gate " input end, output termination integrated circuit 6IC
6" not gate " input end, output terminal divides two-way: the first via is by resistance 6R
13Meet triode 6BG
4Base stage, collector connects power Vcc, meets diode 6D by emitter
2-6D
8Positive pole, by diode 6D
2-6D
8Negative pole meet charactron a-g respectively No. 1; The second the tunnel by integrated circuit 6IC
6" not gate " output terminal and resistance 6R
13The node place is by resistance 6R
14Meet triode 6BG
6Base stage, collector connects power Vcc, meets triode 6BG by emitter
7Base stage, collector connects power Vcc, meets diode 6D by emitter
9-6D
15Positive pole, by diode 6D
9-6D
15Negative pole meet charactron a-g respectively No. 2.
In the alarm the second tunnel, Third Road, the four tunnel, the five tunnel circuit design structure are all identical with first via circuit structure, and the Therefore, omited is to the description of other circuit.
Wherein the six the tunnel is the signal source interface of reserving: signal source normal opened contact 2 meets photoelectronic coupler 11IC
1The photodiode negative pole, signal source normal opened contact 1 ground connection, the positive pole of photodiode is by resistance 11R
1Connect power Vcc, photoelectronic coupler 11IC
1The phototriode pipe collector connect power Vcc, by emitter by resistance 11R
2Meet triode 11BG
1Base stage is by triode 11BG
1With resistance 11R
2Between the node place by resistance 11R
17Connect photoelectronic coupler 11IC
2The phototriode emitter, collector one termination power Vcc, integrated circuit 11IC
3" not gate " input termination signal source positive logic, 11IC
3" not gate " output termination signal source negative logic is by integrated circuit 11IC
3Output termination integrated circuit 11IC
4Input end, its output terminal is by resistance 11R
15Meet triode 11BG
2Base stage, collector connects power Vcc, passes through resistance 11R by emitter
16Sending and receiving optical diode 11LED
1Positive pole, negative pole meet photoelectronic coupler 11IC
2The photodiode positive pole, minus earth meets Vcc by binding post 1, binding post 2 meets Vss.
The speech IC K switch
12Connect K switch
13, K switch
13Other end ground connection, K switch
14Connect K switch
15, K switch
15Other end ground connection, K switch
16Connect K switch
17, K switch
17Other end ground connection, K switch
18Connect K switch
19, K switch
19Other end ground connection, K switch
20Connect K switch
21, K switch
21Other end ground connection, K switch
22Connect K switch
23, K switch
23Other end ground connection, K switch
24For recording, put switch, Sp+ is by electric capacity 6C in speech IC output
1By resistance 6R
15Meet integrated circuit 6IC
82 pin, Sp-is by electric capacity 6C
2By resistance 6R
17Meet integrated circuit 6IC
83 pin form integrated circuit 6IC
8The audio balance fan-in network, integrated circuit 6IC
81,8 pin unsettled, 4 pin ground connection, 5 pin meet electric capacity 6C
6, 6C
7, by 6C
7One termination power amplifier and loudspeaker Y, 6IC
85 pin connecting resistance 6R
18With electric capacity 6C
5Serial connection ground connection, 6IC
86 pin meet electric capacity 6C
4, its other end ground connection, 6IC
87 pin meet electric capacity 6C
3Ground connection.See the center alarm 15 needle serial port CK shown in Fig. 7
4Output map is by relay J
6Normal opened contact J
6-1-1 serial ports CK
41 pin, J
6-1-2 serial ports CK
49 pin, relay normally open contact J
7-1-1 serial ports CK
410 pin, J
7-1-2 serial ports CK
42 pin, relay normally open contact J
8-1-1 serial ports CK
43 pin, J
8-1-2 serial ports CK
411 pin, relay normally open contact J
9-1-1 serial ports CK
44 pin, J
9-1-2 serial ports CK
412 pin, relay normally open contact J
10-1-1 serial ports CK
45 pin, J
10-1-2 serial ports CK
413 pin, relay normally open contact J
11-1-1 serial ports CK
46 pin, J
11-1-2 serial ports CK
414 pin.Fig. 8 shows two winding methods of nixie display circuit theory.One winding method is: nixie display go into a corresponding 1a-6a number and, the corresponding 1b-6b charactron of b point, the corresponding 1c-6c charactron of c point, the corresponding 1d-6d charactron of d point, the corresponding 1e-6e charactron of e point, the corresponding 1f-6f charactron of f point, the corresponding 1g-6g charactron of g point; Two winding methods are: nixie display is pressed numeric structure and is arranged.
Claims (40)
1, transformer station is characterized in that several parts compositions of described control loop, closing circuit, A phase voltage loop, B phase voltage loop, C phase voltage loop and alarm center with light, numeral, phonetic warning system,
Wherein, control loop, closing circuit comprise:
Adopt the sampling of 220V DC voltage, by surge voltage protection (1), resistance step-down (2), polar protective circuit (3), filtering, mu balanced circuit (4), sampling indication loop (5), photoelectricity coupling (6), light warning logic judging circuit (7), light indication promote circuit (8), photoelectricity coupling (9), audio alert trigger circuit (10), and divide two-way by audio alert trigger circuit (10): the one tunnel connects audio alert logic judging circuit (11) and voice alarm circuit (12); Another road connects distant place alarming logic decision circuitry (13), distant place warning executive circuit (14), be connected to 9 needle serial ports (15) and 15 needle serial ports (16) respectively by distant place warning executive circuit (14), connect speech IC (17) by voice alarm circuit (12), Sp+, Sp-by integrated circuit (17) are connected to voice amplifying circuit (18), and connect loudspeaker;
Wherein, A, B, C phase voltage loop comprise: adopt the sampling of 60V alternating voltage, promote circuit (26), photoelectricity coupling (27), audio alert trigger circuit (28) by surge voltage protection (19), resistance step-down (20), full-wave rectification (21), filter regulator circuit (22), sampling indicating circuit (23), photoelectricity coupling (24), light warning logic judging circuit (25), light indication, divide two-way by audio alert trigger circuit (28): the one tunnel connects audio alert logic judging circuit (29) and voice alarm circuit (30); Another road connects distant place alarming logic decision circuitry (31), distant place warning executive circuit (32), is connected to 9 needle serial ports (33) and 15 needle serial ports (34) respectively by distant place warning executive circuit (32), connects speech IC (17) by voice alarm circuit (30);
Wherein alarm center comprises:
9 needle serial ports (35) by minute alarm, by the signal indication respectively taking alarm of 1-5 road (36), optical coupling (37), promotion circuit (38), by promoting circuit (38) Fen Sanlu: the one tunnel connects speech IC (49) through audio alert logic judging circuit (39) and audio alert trigger circuit (40), connects power amplifier (50) and connects loudspeaker by Sp+, Sp-; Two the tunnel connect distant place alarming logic decision circuitry (41), promote circuit (42), distant place alarm relay (43) connects a distant place 15 needle serial ports (44) of reporting to the police; Three routes numeral alarming logic decision circuitry (45), promotion circuit (46) connect 1, No. 2 digital indicator (47 and 48) respectively; Wherein alarm 6 tunnel is the preserved signal source interface: connect optical coupling (52) and promoted circuit (58) by normal opened contact (51); Connect after digital signal (53) and (54) serial connection and promote circuit (55), warning indicating circuit (56) and optical coupling (57), be connected to by optical coupling (57) and promote circuit (58), be connected to above-mentioned three tunnel identical outputs by promoting circuit (58) Fen Sanlu.
By the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that 2, described control loop, closing circuit are that identical circuit form constitutes.
3, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described surge protection (1) is to be connected to voltage dependent resistor (VDR) 1VR by direct current sampled voltage positive pole
1An end, another termination sampled voltage negative pole constitutes, and adopts positive polarity to be connected to resistance 1R by resistance step-down (2)
1An end, another terminating diode 1D
1Positive terminal.
4, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described polarity protection (3) is to meet diode 1D by the sampled voltage positive pole
1Positive pole, the sampled voltage negative pole meets diode 1D
2Negative pole constitute, by filtering, mu balanced circuit (4) by electric capacity 1C
1, 1C
2Parallel connection is connected to diode 1D respectively
1Negative pole and 1D
2Positive pole form high and low frequency filter element, stabilivolt 1DW
1Negative pole parallel diode 1D
1Negative pole, positive pole meet 1D
2Positive pole constitute.
By the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that 5, described sampling indication loop (5) is by diode 1D
1Negative pole and resistance 1R
2Series connection is by resistance 1R
2With light emitting diode 1LED
1Anodal connection, negative pole and photoelectronic coupler 1IC
1The anodal series connection of light emitting diode, negative pole and diode 1D
2Positive pole is connected to form.
6, by the described transformer station of claim 1 light, numeral, phonetic warning system, its spy is to adopt photoelectronic coupler (6) 1IC
1The light emitting diode positive pole meet 1LED
1The negative pole of light emitting diode, negative pole connect the negative pole of sampled voltage, photoelectronic coupler 1IC
1The collector of phototriode connects power Vcc, and emitter is by resistance 1R
3Be connected to triode 1BG
1Base stage.
7, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described light warning logic judging circuit (7) is by resistance 1R
3The triode 1BG that connects
1, its collector connects power Vcc, emitter and the resistance 1R that is connected in series
4, 1R
6Connect the back and press integrated circuit 1IC
2The input end of " not gate ", output terminal is by resistance 1R
7Be connected to triode 1BG
2Base stage, by resistance 1R
4, 1R
6Between contact on insert resistance 1R
5Ground connection constitutes.
By the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that 8, described light indication promotes circuit (8), because triode 1BG
2Collector connect power Vcc, emitter is by resistance 1R
8Be connected to light emitting diode 1LED
2Positive pole, negative pole meets photoelectronic coupler 1IC
3The light emitting diode positive pole connects and composes.
9, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that, by photoelectronic coupler (9) 1IC
3The anodal sending and receiving optical diode of light emitting diode 1LED
2Negative pole, light emitting diode minus earth, 1IC
3The phototriode collector connects power Vcc, and emitter is by resistance 1R
9Be connected to triode 1BG
3Base stage constitute.
10, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described audio alert trigger circuit (10) are by triode 1BG
3Collector connects power Vcc, and emitter output two-way constitutes.
11, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described audio alert decision logic circuit (11) is by triode 1BG
3Emitter output series resistor 1R
10, 1R
12Integrated circuit 1IC is inserted in the back
4" not gate " input end constitutes, and passes through 1IC
4" not gate " output terminal is connected to by switch 1 and speech IC (17) 1IC
7K switch
6The voice alarm circuit of forming (12).
12, by the described transformer station of claim 11 light, numeral, phonetic warning system, it is characterized in that described speech IC (17) 1IC
7Sp+ by electric capacity 1C
3, resistance 1R
19Meet integrated circuit (18) 1IC
82 pin, Sp-meets electric capacity 1C
4, resistance 1R
16Meet 1IC
83 pin, resistance 1R
17Be attempted by integrated circuit 1IC
8The 1IC that forms of 2,3 pin
8The audio balance fan-in network; 1IC
85 pin connecting resistance 1R
18, electric capacity 1C
8Ground connection, resistance 1R
18With electric capacity 1C
7The anodal connection, negative pole meets loudspeaker Y and forms audio output circuit.
13, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that distant place alarming logic circuit (13) is by triode 1BG
3Emitter output series resistor 1R
13, 1R
15The compound access integrated circuit 1IC in back
5, 1IC
6, be connected to triode 1BG
4Base stage, at resistance 1R
13, 1R
15Between be connected to resistance 1R on the contact
14Ground connection constitutes.
14, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described distant place warning executive circuit (14) adopts the triode 1BG of compound connection
4, 1BG
5, its collector connects power Vcc, and emitter is succeeded electrical equipment J
1, the relay coil two ends also are connected to diode 1D
3Form; And connect 9 needle serial ports (15) and 15 needle serial ports (16) respectively by distant place warning executive circuit (14).
15, by claim 14 described transformer stations light, numeral, phonetic warning system, it is characterized in that described 9 needle serial ports (15) adopt relay J
1Normal opened contact J
1-1-1With J
2-1-1Contact, J
4-1-1Contact, J
5-1-1Contact connects power Vcc, relay J after connecting
1Normal opened contact J
1-1-2Meet 9 pin string CK
11 pin, relay J
2Normal opened contact J
2-1-2Meet 9 needle serial port CK
16 pin, relay J
3Normal opened contact J
3-1-2Meet 9 needle serial port CK
17 pin, relay J
4Normal opened contact J
4-1-2Meet 9 needle serial port CK
12 pin, relay J
5-1-2Meet 9 needle serial port CK
18 pin, 5 pin ground connection.
16,, it is characterized in that described 15 needle serial ports (16) adopt relay normally open contact J by the described transformer station of claim 14 light, numeral, phonetic warning system
1-2-1Meet 15 needle serial port CK
21 pin, relay normally open contact J
1-2-2Meet 15 needle serial port CK
29 pin, relay normally open contact J
2-2-1Meet 15 needle serial port CK
22 pin, relay normally open contact J
2-2-2Meet 15 needle serial port CK
210 pin, relay normally open contact J
3-2-1Meet 15 needle serial port CK
23 pin, relay normally open contact J
3-2-2Meet 15 needle serial port CK
211 pin, relay normally open contact J
4-2-1Meet 15 needle serial port CK
24 pin, relay normally open contact J
4-2-2Meet 15 needle serial port CK
212 pin, J
5-2-1Meet 15 needle serial port CK
214 pin, relay normally open contact J
5-2-2Meet 15 needle serial port CK
215 pin.
By the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that 17, described A phase, B phase, C phase voltage loop are that identical circuit form constitutes.
18, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that the surge protection (19) in the described A phase voltage loop is to be connected to voltage dependent resistor (VDR) 3VR mutually by AC sampling voltage A
1An end, constitute on another termination sampling incoming line N line.
By the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that 19, resistance step-down (20) adopts the output of resistance 3R1 voltage drop element to meet diode 3D
1Positive terminal.
20, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that full-wave rectifying circuit (21) is by diode 3D
1Anodal connecting resistance 3R
1, negative pole and diode 3D
2The negative connection, positive pole connects on the N line to be formed.
21, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that filtering, mu balanced circuit (22) are by electric capacity 3C
1High frequency filter element one end and diode 3D
1, 3D
2Connect, the other end connects with the N line, electric capacity 3C
2Low frequency filtering element and electric capacity 3C
1Parallel connection, voltage stabilizing diode 3DW
1With electric capacity 3C
2Formation in parallel.
22, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described sampling indicating circuit (23) is by resistance 3R
2A terminating diode 3D
1Negative pole, other end sending and receiving optical diode 3LED
1Positive pole, negative pole meet optical coupling device 3IC
1Light emitting diode is anodal to be constituted.
23, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that, adopt photoelectronic coupler (24) 3IC
1The light emitting diode positive pole meets 3LED
1Negative pole, 3IC
1The light emitting diode negative pole connects on the N line, 3IC
1The phototriode collector connects power Vcc, and emitter is by resistance 3R
3Meet triode 3BG
1Base stage.
24,, it is characterized in that described light warning logic judging circuit (25) adopts triode 3BG by the described transformer station of claim 1 light, numeral, phonetic warning system
1Collector connects power Vcc, emitter series resistor 3R
4, 3R
6Be connected to integrated circuit 3IC
2" not gate " input end constitutes, by resistance 3R
4, 3R
6Between connecting resistance 3R on the contact
5Ground connection; Integrated circuit 3IC
2" not gate " output terminal passes through 3R
7Meet triode 3BG
3Base stage.
By the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that 25, described light indication promotes circuit (26), adopts triode 3BG
3Utmost point electrode connect power Vcc, emitter is by resistance 3R
8Sending and receiving optical diode 3LED
2Anodal formation, negative pole meets photoelectronic coupler (27) 3IC
3The light emitting diode positive pole, minus earth, the phototriode collector connects power Vcc, and emitter is by resistance 3R
9Meet triode 3BG
3Base stage.
26, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described audio alert trigger circuit (28) are by triode 3BG
3Collector connects power Vcc, and emitter output two-way constitutes.
27, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described audio alert logic judging circuit (29) is by 3BG
3Emitter output connecting resistance 3R
10, 3R
12Meet integrated circuit 3IC after the serial connection
4" not gate " input end constitutes, the K switch in " not gate " the output termination voice alarm circuit (30)
3Meet speech IC 1IC
7K switch
8
28, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described distant place alarming logic decision circuitry (31) is by 3BG
3Emitter output connecting resistance 3R
13, 3R
15Meet integrated circuit 3IC after the serial connection
5, 3IC
6, resistance 3R
13, 3R
15Between connecting resistance 3R on the contact
14Constitute.
29, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described distant place warning executive circuit (32) is by integrated circuit 3IC
6Negative pole meets the triode 3BG of compound connection
4, 3BG
5, collector connects power Vcc, by 3BG
5Emitter is succeeded electrical equipment J
3, relay J
3Coil two termination diode 3D
3Constitute.
30, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that 9 needle serial ports (33) that described distant place warning executive circuit (32) connects respectively and 15 needle serial ports (34) are identical type of attachment with 9 needle serial ports and 15 needle serial ports of control loop.
By the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that 31, the 1 road to the 5 tunnel on 9 needle serial ports (35) of described alarm center are that identical circuit form constitutes.
32, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described netting twine is received 9 needle serial port CK of branch alarm
31 pin connects first via alarm goes into a little, by resistance 6R
1Meet 6LED
16LED is passed through in the alerting signal indication (36) that the positive pole of light emitting diode is formed
1Negative pole termination photoelectronic coupler (37) 6IC
1The light emitting diode positive pole, negative pole is by serial ports 5 pin ground connection, 6IC
1The phototriode collector connects power Vcc, and emitter is by resistance 6R
2Meet triode 6BG
1The promotion circuit (38) that base stage is formed, 6BG
1Collector connects power Vcc, and emitter divides three tunnel outputs.
33, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described audio alert logic judging circuit (39) is by triode 6BG
1The resistance 6R of emitter output first via serial connection
3, 6R
5, meet integrated circuit 6IC
2Positive pole, resistance 6R
3, 6R
5Between connecting resistance 6R on the contact
4Ground connection constitutes, and passes through 6IC
2Negative pole connects K switch
12The audio alert trigger circuit of forming (40) are by K switch
12Meet speech IC (49) 6IC
7K switch
13
34, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described speech IC 6IC
7Sp+ meet electric capacity 6C
1, resistance 6R
15Meet integrated circuit (50) 6IC
82 pin, Sp-meets electric capacity 6C
2, resistance R
17Meet 6IC
83 pin, 2,3 pin and connecting resistance 6R
16, 6IC
85 pin, by electric capacity 6C
6, 6C
7Connect power amplifier and loudspeaker.
35, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described distant place alarming logic decision circuitry (41) is by triode 6BG
1Emitter is exported the second road series resistor 6R
6, 6R
8Meet integrated circuit 6IC
3, 6IC
4, resistance 6R
6, 6R
8Between connecting resistance 6R on the contact
7Ground connection constitutes, by integrated circuit 6IC
4Negative pole connects by resistance 6R
9Serial connection compound transistor 6BG
2, 6BG
3The promotion circuit of forming (42).
36, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described distant place alarm relay (43) is by triode 6BG
3The relay J that emitter connects
6, by relay coil two termination diode 6D
1Constitute.
37, by the described transformer station of claim 1 with light, numeral, phonetic warning system, it is characterized in that a described distant place 15 needle serial ports (44) of reporting to the police adopt relay J
6Normal opened contact, J
6-1-1 serial ports CK
41 pin, J
6-1-2 serial ports CK
49 pin, relay normally open contact J
7-1-1 serial ports CK
410 pin, J
7-1-2Serial ports CK
42 pin, relay normally open contact J
8-1-1 serial ports CK
43 pin, J
8-1-2 serial ports CK
411 pin, relay normally open contact J
9-1-1 serial ports CK
44 pin, J
9-1-2 serial ports CK
412 pin, relay normally open contact J
10-1-1 serial ports CK
45 pin, J
10-1-2 serial ports CK
413 pin, relay normally open contact J
11-1-1 serial ports CK
46 pin, J
11-1-2 serial ports CK
414 pin.
38, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that described digital warning logic judging circuit (45) is by triode 6BG
1Emitter output Third Road series resistor 6R
10, 6R
12Meet integrated circuit 6IC
5, 6IC
6, resistance 6R
10, 6R
12Between contact connecting resistance 6R
11Ground connection constitutes, by integrated circuit 6IC
6The first via of output terminal output is by resistance 6R
13Connection is by triode 6BG
4, 6BG
5The promotion circuit of forming (46) is by triode 6BG
5Emitter connects No. 1 numeral and shows (47) diode 6D
2-6D
8Positive pole, negative pole meets charactron a-g respectively No. 1; By 6IC
6Export the second the tunnel by resistance 6R
14Meet compound transistor 6BG
6, 6BG
7, by triode 6BG
7Emitter connects No. 2 numerals and shows (48) diode 6D
9-6D
15Positive pole, negative pole meet charactron a-g respectively No. 2.
By the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that 39, the signal source interface of described alarm the six tunnel for reserving: the signal source contact (2) of normal opened contact (51) meets photoelectricity coupling (52) 11IC
1The photodiode negative pole, anodal by resistance 11R
1Connect power Vcc, signal source normal opened contact (1) ground connection, 11IC
1The phototriode pipe collector connects power Vcc, and emitter is by resistance 11R
2Connect by triode 11BG
1The promotion circuit of forming (58) is by triode 11BG
1Export three the tunnel identical with above-mentioned circuit form.
40, by the described transformer station of claim 1 light, numeral, phonetic warning system, it is characterized in that, by triode 11BG
1Base stage and resistance 11R
2Pass through resistance 11R on the contact
17Connect optical coupling (57) 11IC
2The phototriode emitter, collector connects power Vcc, 11IC
2Photodiode minus earth, positive pole are connected to the light emitting diode 11LED of warning indicating circuit (56)
1Negative pole, anodal by resistance 11R
16Meet the triode 11BG that promotes circuit (55)
2Emitter, collector connects power Vcc, and base stage is by resistance 11R
15Meet the 11IC of integrated circuit (54)
4Negative pole is by integrated circuit 11IC
4Positive pole meets integrated circuit (53) 11IC
3Negative pole, positive pole connect signal source positive logic, by 11IC
3Negative pole connects the signal source negative logic, and binding post 1 connects power Vcc, and binding post 2 meets power supply Vss.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 01102769 CN1308239A (en) | 2001-01-22 | 2001-01-22 | Light, digital and phonetic warning system for transformer station |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 01102769 CN1308239A (en) | 2001-01-22 | 2001-01-22 | Light, digital and phonetic warning system for transformer station |
Publications (1)
Publication Number | Publication Date |
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CN1308239A true CN1308239A (en) | 2001-08-15 |
Family
ID=4652973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 01102769 Pending CN1308239A (en) | 2001-01-22 | 2001-01-22 | Light, digital and phonetic warning system for transformer station |
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CN (1) | CN1308239A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100359421C (en) * | 2002-03-26 | 2008-01-02 | 埃姆卡零配件两合公司 | Alarm and control system for a switch cabinet |
CN105069968A (en) * | 2015-07-28 | 2015-11-18 | 国网上海市电力公司 | Electricity-approaching alarm drum |
-
2001
- 2001-01-22 CN CN 01102769 patent/CN1308239A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100359421C (en) * | 2002-03-26 | 2008-01-02 | 埃姆卡零配件两合公司 | Alarm and control system for a switch cabinet |
CN105069968A (en) * | 2015-07-28 | 2015-11-18 | 国网上海市电力公司 | Electricity-approaching alarm drum |
CN105069968B (en) * | 2015-07-28 | 2017-12-19 | 国网上海市电力公司 | A kind of nearly electric alarm cylinder |
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