CN204279122U - A kind of novel 25KV pantograph control circuit - Google Patents
A kind of novel 25KV pantograph control circuit Download PDFInfo
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- CN204279122U CN204279122U CN201420735654.4U CN201420735654U CN204279122U CN 204279122 U CN204279122 U CN 204279122U CN 201420735654 U CN201420735654 U CN 201420735654U CN 204279122 U CN204279122 U CN 204279122U
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Abstract
The utility model provides a kind of novel 25KV pantograph control circuit, comprises two groups of sub-control circuits, and each organizes sub-control circuit for controlling the lifting of one group of pantograph; Wherein, each organize sub-control circuit comprise a rising bow valve PUV, rising bow relay K APU, interlock relay KAPI, one fall bow relay K APDW1, one high every an adhesive electromagnetic valve PDCV and high_voltage isolation relay, when falling bow command input and having instruction to input, the 3rd group of normally closed contact of KAPDW1 disconnects, and then cause PDCV dead electricity, make the coil losing electricity of high_voltage isolation relay, its open contact be connected between PUV and KAPU turns off, make PUV dead electricity, finally make corresponding pantograph be lowered.In the utility model, there is instruction to input as long as fall bow command input, corresponding pantograph all can be caused automatically to be lowered.
Description
Technical Field
The utility model relates to a train control technical field especially relates to a novel 25KV pantograph control circuit.
Background
At present, 2 pantographs are generally configured for each train (fixed marshalling) of 25KV power supply trains, and only 1 pantograph is put into operation while the other 1 pantograph is in standby. Each pantograph power supply circuit is provided with a high-voltage isolating switch to isolate unused pantographs, the action of controlling the high-voltage isolating switch can only be operated (remote control) on a corresponding interface of a display of a network system, if the network system fails, the high-voltage isolating switch cannot be controlled, and the operation cannot be performed when the pantograph needs to be isolated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at designing a novel 25KV pantograph control circuit promptly, can make the pantograph automatically by keeping apart after being fallen the bow.
In order to achieve the above object, the present invention provides a novel 25KV pantograph control circuit for controlling two groups of pantographs of the same train, wherein the control circuit comprises two groups of sub-control circuits, each group of sub-control circuits is used for controlling the lifting of one group of pantographs; wherein,
each group of sub-control circuits comprises a pantograph rising valve PUV, a pantograph rising relay KAPU, an interlocking relay KAPI, a pantograph falling relay KAPDW1, a high-isolation suction electromagnetic valve PDCV and a high-voltage isolation relay;
the first group of normally closed contacts of the KAPI are arranged between the pantograph rising instruction input ends of the group of sub-control circuits and the coil of the KAPU;
the first group of normally open contacts of the KAPU is arranged between the power input end and the PUV, one end of the second group of normally open contacts is coupled between the first group of normally closed contacts of the KAPI and the coil of the KAPU, and the other end of the second group of normally open contacts is coupled between the first group of normally open contact switches of the KAPU and the power input end;
one end of the coil of the KAPI is coupled between a first group of normally open contacts of the KAPU in the other group of sub-control circuits and a first group of normally closed contacts of the KAPI;
a first set of normally closed contacts of KAPDW1 is arranged between the power input end and the first set of normally open contacts of KAPU, and a second set of normally closed contacts is arranged between the pantograph-raising instruction input end of the sub-control circuit and the first set of normally closed contacts of KAPI; the coil of KAPDW1 is electrically connected with the pantograph lowering command input end;
when the PDCV is electrified, the coil of the high-voltage isolation relay is attracted; the third group of normally closed contacts of KAPDW1 and the third group of normally open contacts of KAPU are connected in series and then arranged between the PDCV and the power input end, and the first group of normally open nodes of the high-voltage isolation relay is connected between the pantograph-rising valve PUV and the first group of normally open contacts of KAPU.
Further, one end of the coil of the KAPI is coupled between the first set of normally open contacts of the KAPU and the first set of normally closed contacts of the KAPI in the other set of sub-control circuits.
Furthermore, each group of sub-control circuits also comprises another pantograph-reducing relay KAPDW2, a high-isolation opening solenoid valve PDOV and a time delay relay PDCT; when the PDOV is powered on, the coil of the high-voltage isolation relay is powered off; a circuit formed by connecting the first group of normally open contacts of KAPDW2 and the first group of normally closed contacts of KAPU in series is connected between the coil of KAPDW2 and the power supply input end after being connected in parallel with the first group of normally open contacts of KAPDW 1; a second group of normally open contacts of KAPDW2 is connected between the coil of the PDCT and the power input end, and a circuit formed by connecting PDOV with a group of time-delay normally open contacts of the PDCT in series is connected with the coil of the PDCT in parallel.
Furthermore, each group of sub-control circuits also comprises an external power supply relay KAEP, a high-speed circuit breaking relay VCB and an external power supply interlocking switch YSC;
a group of normally closed contacts of the VCB are connected in series with the YSC and then connected between the coil of the KAEP and the power supply input end; the first set of normally open contacts of KAEP is connected between the coil of KAPDW1 and the power input.
Further, the instruction input end of the pantograph lifting instruction is the instruction input end of the pantograph lifting instruction of the driver, the instruction input end of the pantograph lowering instruction of the driver is the instruction input end of the pantograph lowering instruction of the driver, and each group of sub-control circuits further comprises: two remote relays KAPCO1 and KAPCO 2;
a group of normally open contacts of KAPCO1 is connected in parallel with a first group of normally open contacts of KAEP, and a group of normally closed contacts is connected with a coil of KAPDW1 and a pantograph lowering command input end;
one set of normally open contacts of KAPCO2 is connected in parallel with the second set of normally open contacts of KAPDW1, and one set of normally closed contacts is connected in series with the third set of normally closed contacts of KAPDW1 and the third set of normally open contacts of KAPU at the PDCV and the power input end.
Furthermore, each group of sub-control circuits also comprises an air-break circuit breaker arranged between the input end of a driver bow-lowering instruction, the input end of a driver bow-raising instruction and the input end of a power supply and the main circuit.
The utility model provides an among the pantograph control circuit, when the instruction input that falls, KAPDW 1's third group normally closed contact disconnection, and then lead to PDCV to lose the electricity for the coil of high pressure isolation relay loses the electricity, and its normally open contact of connecting between PUV and KAPU is turn-offed, makes PUV lose the electricity, finally makes corresponding pantograph by the descending. The utility model discloses in, as long as there is the instruction input at the instruction input end of falling the bow, all can lead to corresponding pantograph to be fallen automatically.
Drawings
Fig. 1 is a schematic structural diagram of one of the sub-control circuits in the pantograph control circuit according to the present invention.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a schematic diagram of a novel 25KV pantograph control circuit provided in an embodiment of the present invention is used for controlling two groups of pantographs of a same train, the control circuit includes two groups of sub-control circuits, and each group of sub-control circuits is used for controlling the lifting of a group of pantographs; wherein,
each group of sub-control circuits comprises a pantograph rising valve PUV, a pantograph rising relay KAPU, an interlocking relay KAPI, a pantograph falling relay KAPDW1, a high-isolation suction electromagnetic valve PDCV and a high-voltage isolation relay PDCS; the pantograph raising valve PUV is used for controlling the lifting of the pantograph, and when the pantograph raising valve PUV is powered,
the first group of normally closed contacts of the KAPI are arranged between the pantograph rising instruction input ends of the group of sub-control circuits and the coil of the KAPU;
the first group of normally open contacts of KAPU is arranged between the power input end and the PUV, one end of the second group of normally open contacts is coupled between the first group of normally closed contacts of KAPI and the coil of KAPU, and the other end of the second group of normally open contacts is coupled between the first group of normally open contact switches of KAPU and one point (shown as point B in the figure) of the power input end (assuming that a 110V direct-current power supply is adopted);
one end of the coil of the KAPI is coupled between a first group of normally open contacts of the KAPU in the other group of sub-control circuits and a first group of normally closed contacts of the KAPI;
a first set of normally closed contacts of KAPDW1 is arranged between the power input end and the first set of normally open contacts of KAPU, and a second set of normally closed contacts is arranged between the pantograph-raising instruction input end of the sub-control circuit and the first set of normally closed contacts of KAPI; the coil of KAPDW1 is electrically connected with the pantograph lowering command input end;
when the PDCV is electrified, the coil of the PDCS of the high-voltage isolation relay is attracted; the third group of normally closed contacts of KAPDW1 and the third group of normally open contacts of KAPU are connected in series and then arranged between the PDCV and the power input end, and the first group of normally open nodes (1 and 2 shown in the figure) of the high-voltage isolation relay PDCS are connected between the pantograph-raising valve PUV and the first group of normally open contacts of KAPU.
The embodiment of the utility model provides an in, when falling bow instruction input end has the instruction input, the disconnection of the normally closed contact of third group of KAPDW1, and then lead to PDCV to lose the electricity for the coil of high pressure isolation relay loses the electricity, and its normally open contact of connecting between PUV and KAPU is turn-offed, makes PUV lose the electricity, finally makes corresponding pantograph by the descending. The utility model discloses in, as long as there is the instruction input at the instruction input end of falling the bow, all can lead to corresponding pantograph to be fallen automatically.
It should be noted that the references to first, second, etc. in the embodiments of the present invention have no special meaning, but are only for distinguishing the corresponding objects.
As shown in fig. 1, optionally, one end of the coil of KAPI (shown as point C) is coupled to a point (shown as point a) in the other set of sub-control circuits between the first set of normally open contacts of KAPU and the first set of normally closed contacts of KAPI. Like this, when the pantograph that another group control circuit corresponds is in the state of rising the bow, any point between KAPU's first group normally open contact and KAPI's the first group normally closed contact can receive the electricity to make this group control circuit's KAPI's coil actuation, and then lead to KAPI's normally closed contact to be opened, the PUV valve can not receive the electricity, and is corresponding, the pantograph also can not be risen. In this way, the interlocking of the two sets of pantographs is achieved.
As shown in fig. 1, optionally, each group of sub-control circuits further comprises another pantograph-lowering relay KAPDW2, a high-isolation open solenoid valve PDOV, and a time-delay relay PDCT; when the PDOV is powered on, the coil of the high-voltage isolation relay is powered off; a circuit formed by connecting the first group of normally open contacts of KAPDW2 and the first group of normally closed contacts of KAPU in series is connected between the coil of KAPDW2 and the power supply input end after being connected in parallel with the first group of normally open contacts of KAPDW 1; a second group of normally open contacts of KAPDW2 is connected between the coil of the PDCT and the power input end, and a circuit formed by connecting PDOV with a group of time-delay normally open contacts of the PDCT in series is connected with the coil of the PDCT in parallel.
This has the advantage of allowing the downswing command to be a pulse signal rather than a continuous signal. Since the coil of KAPDW2 is energized to close its normally closed contacts due to the short-time closing of KAPDW1 upon receipt of a pulsed pantograph command, the coil of KAPDW2 is connected to the power supply via the normally open contacts of KAPDW2 (which are closed at this time), and the normally closed contacts of KAPU. So that KAPDW2 is continuously closed, the coil of PDCT is instantaneously powered on, the delay switch of the coil is delayed (preferably 6s) to be closed, PDOV is continuously powered on, the coil of the high-voltage isolating switch is ensured to be powered off, and PUV is continuously isolated.
Furthermore, each group of sub-control circuits also comprises an external power supply relay KAEP, a high-speed circuit breaking relay VCB and an external power supply interlocking switch YSC; a group of normally closed contacts of the VCB are connected in series with the YSC and then connected between the coil of the KAEP and the power supply input end; the first set of normally open contacts of KAEP is connected between the coil of KAPDW1 and the power input.
Thus, when the high-speed cut-off relay VCB is pulled in, the coil of KEAP is pulled in, and the normally open contact of KAEP is closed, so that the kappw 1 is powered on, and the pantograph is automatically lowered.
Further, the instruction input end of the pantograph lifting instruction is the instruction input end of the pantograph lifting instruction of the driver, the instruction input end of the pantograph lowering instruction of the driver is the instruction input end of the pantograph lowering instruction of the driver, and each group of sub-control circuits further comprises: two remote relays KAPCO1 and KAPCO 2;
a group of normally open contacts of KAPCO1 is connected in parallel with a first group of normally open contacts of KAEP, and a group of normally closed contacts is connected with a coil of KAPDW1 and a pantograph lowering command input end;
one set of normally open contacts of KAPCO2 is connected in parallel with the second set of normally open contacts of KAPDW1, and one set of normally closed contacts is connected in series with the third set of normally closed contacts of KAPDW1 and the third set of normally open contacts of KAPU at the PDCV and the power input end.
This enables remote control. Also, as an alternative, as shown in fig. 1, KAPCO1R and KAPCO2R are remotely located, with the coil of KAPCO1R being in parallel with the coil of KAPCO2, the coil of KAPCO2R being in series with the coil of KAPCO1, and a command unit KAU is also located, the KAU also having normally closed contacts and normally open contacts, as shown in fig. 1, with the normally closed contacts of kappw 1, the first set of normally closed contacts of KAP being in series at the driver command input between the driver pantograph command input and KAPU. The normally open contact is arranged on a control loop of the telecommunication system TCMS. Thus, when the normally closed contact of KAU is opened, the normally open contact is closed, allowing the remote signal to be accessed.
Preferably, each set of sub-control circuits further comprises an idle cut-off circuit, represented in fig. 1 as QFPUV, QFPD, QFCOS, QFPOC, arranged between the driver pantograph command input, the input of the power supply and the main circuit.
As shown in fig. 1, one end of each coil, which is not connected to another element, is connected to a ground (100 in the drawing). The four-digit numbers at the beginning of each "95" shown in fig. 1 are numbers representing corresponding lines, and are not described in detail here.
The following explains the working principle of the preferred embodiment provided by the present invention:
pantograph lifting control
When a driver operates a pantograph lifting button of a cab and VCB is disconnected, a pantograph lifting command line of the driver is electrified, no pantograph lowering command (KAPDW1 is not excited), a pantograph lifting interlocking relay KAPI is not excited, a pantograph lifting relay KAPU is excited, a normally open contact of KAPU is in a closed state, a high isolation switch electromagnetic valve PDCV is excited, a normally open auxiliary contact of a high isolation PDCS is closed, a pantograph lifting electromagnetic valve is excited, and a pantograph rises.
Or through remote pantograph lifting operation, the pantograph to be lifted is selected on a monitor display, a unit command relay (KAU) is excited, the network system judges that VCB is disconnected, a pantograph lifting command is given, and the No. 9518 line is electrified; the unit's KAPU is excited while the high isolation solenoid valve PDCV is excited.
1 high-isolation-off solenoid valve PDCV excited condition:
1) when a pantograph rising instruction exists, the KAPU is excited, and the KAPU normally open contact is closed;
2) the pantograph-lowering relay KAPDW1 is opened, and the KAPDW1 normally-closed contact is closed;
3) without a remote pantograph cut command, the KAPCO2 normally closed contacts are closed.
Therefore, the high-isolation switch electromagnetic valve without the pantograph lifting instruction cannot be electrified, and the defect of normal electrification in the prior art is overcome.
2 pantograph ascending electromagnetic valve excited condition:
1) high voltage isolator PDCS closure
2) When a pantograph rising instruction exists, the KAPU is excited, and the KAPU normally open contact is closed;
3) the pantograph relay KAPDW1 is opened, and the KAPDW1 normally closed contact is closed.
Dual drop pantograph control
When a driver operates a pantograph lowering button of a cab and a VCB is disconnected, a pantograph lowering command line of the driver is powered on, or a pantograph to be lowered is selected through remote pantograph lowering operation, a unit command relay (KAU) is excited, a network system judges that the VCB is disconnected and gives a pantograph lowering command, and a No. 9517 line is powered on; the pantograph remote cut-off relays KAPCO 1-2 are excited, the pantograph lowering relay (KAPDW1) is excited, the normally closed contact of KAPDW1 is opened, the PUV is de-excited, and the pantograph is lowered.
1-drop pantograph relay (KAPDW1) excited condition:
1) there is a pantograph lowering command (from cab pantograph lowering button operation or from network system display input pantograph lowering command); or the relay KAEP is excited when the external power supply supplies power.
2 external power supply relay KAEP excited condition:
1) an external power supply is connected to a mechanical interlocking switch YSC and is closed;
2) the high speed circuit breaker VCB opens.
The two conditions ensure that when the external power supply supplies power, the high-speed circuit breaker VCB is disconnected, and the pantograph automatically falls
Control of three-high isolation switch
The control of the high-isolation switch during pantograph raising is described in the pantograph raising control section, and the control of the high-isolation switch during pantograph lowering is described below.
When the pantograph-lowering relay (KAPDW1) is excited, the closing electromagnetic valve PDCV of the high-isolation switch loses power, the opening electromagnetic valve PDOV of the high-isolation switch is closed in about 6 seconds in a delayed mode, the high-voltage isolation switch is opened through the air passage of the high-voltage isolation switch, the purpose that the pantograph is isolated when falling is achieved, and the falling pantograph is not electrified.
1. The power loss condition of the high-isolation closed electromagnetic valve PDCV is as follows:
1) the pantograph-lowering relay (KAPDW1) is excited, and the normally closed contact is opened;
2) when the KAPU of the pantograph lifting relay is powered off, the normally open contact is disconnected;
3) or a remote pantograph cutting command, the KAPCO2 normally closed contact is opened
2. The high-isolation open solenoid valve PDOV is excited:
the pantograph reducing relay (KAPDW2) is excited or has a pantograph remote cutting instruction KAPCO2 normally open contact to be closed;
the time delay relay PDCT is closed after the time delay of about 6 seconds after the action of KAPDW2 or KAPCO 2.
3. Excitation condition of the pantograph-lowering relay KAPDW 2:
since the high-barrier solenoid valve is not a pulse valve, it cannot be controlled by a short pulse signal.
Therefore, the pantograph-reducing relay for controlling the high-isolation cut-off electromagnetic valve PDOV cannot be a pulse control relay, the pantograph-reducing relay KAPDW1 is controlled to be a pulse signal, and KAPDW1 is electrified in a short time; therefore, another pantograph lowering relay KAPDW2 is adopted to make it always powered during pantograph lowering, so that the high isolation open solenoid valve PDOV controlled by the pantograph normally powered during pantograph lowering, and the pantograph is kept isolated during pantograph lowering.
The above circuit is illustrated as follows:
when the pantograph reducing command is given, the pantograph reducing relay KAPDW1 is excited, and the normally open contact is closed; the pantograph lowering relay KAPDW2 is excited, the normally open contact is closed, the pantograph raising relay KAPU loses power, the normally closed contact is closed, KAPDW2 self-protection is realized, the pantograph raising relay KAPU is powered up until a pantograph raising command is given, and the pantograph lowering relay KAPDW2 is powered off.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A novel 25KV pantograph control circuit is characterized by being used for controlling two groups of pantographs of the same train, wherein the control circuit comprises two groups of sub-control circuits, and each group of sub-control circuits is used for controlling the lifting of one group of pantographs; wherein,
each group of sub-control circuits comprises a pantograph rising valve PUV, a pantograph rising relay KAPU, an interlocking relay KAPI, a pantograph falling relay KAPDW1, a high-isolation suction electromagnetic valve PDCV and a high-voltage isolation relay;
the first group of normally closed contacts of the KAPI are arranged between the pantograph rising instruction input ends of the group of sub-control circuits and the coil of the KAPU;
the first group of normally open contacts of the KAPU is arranged between the power input end and the PUV, one end of the second group of normally open contacts is coupled between the first group of normally closed contacts of the KAPI and the coil of the KAPU, and the other end of the second group of normally open contacts is coupled between the first group of normally open contact switches of the KAPU and the power input end;
one end of the coil of the KAPI is coupled between a first group of normally open contacts of the KAPU in the other group of sub-control circuits and a first group of normally closed contacts of the KAPI;
a first set of normally closed contacts of KAPDW1 is arranged between the power input end and the first set of normally open contacts of KAPU, and a second set of normally closed contacts is arranged between the pantograph-raising instruction input end of the sub-control circuit and the first set of normally closed contacts of KAPI; the coil of KAPDW1 is electrically connected with the pantograph lowering command input end;
when the PDCV is electrified, the coil of the high-voltage isolation relay is attracted; the third group of normally closed contacts of KAPDW1 and the third group of normally open contacts of KAPU are connected in series and then arranged between the PDCV and the power input end, and the first group of normally open nodes of the high-voltage isolation relay is connected between the pantograph-rising valve PUV and the first group of normally open contacts of KAPU.
2. The control circuit of claim 1, wherein a coil of the KAPI is coupled at one end between a first set of normally open contacts of the KAPU and a first set of normally closed contacts of the KAPI in the other set of sub-control circuits.
3. The control circuit of claim 2, wherein each set of sub-control circuits further comprises another pantograph relay KAPDW2, a high isolation open solenoid valve PDOV, a delay relay PDCT; when the PDOV is powered on, the coil of the high-voltage isolation relay is powered off; a circuit formed by connecting the first group of normally open contacts of KAPDW2 and the first group of normally closed contacts of KAPU in series is connected between the coil of KAPDW2 and the power supply input end after being connected in parallel with the first group of normally open contacts of KAPDW 1; a second group of normally open contacts of KAPDW2 is connected between the coil of the PDCT and the power input end, and a circuit formed by connecting PDOV with a group of time-delay normally open contacts of the PDCT in series is connected with the coil of the PDCT in parallel.
4. The control circuit of claim 3,
each group of sub-control circuits also comprises an external power supply relay KAEP, a high-speed circuit breaking relay VCB and an external power supply interlocking switch YSC;
a group of normally closed contacts of the VCB are connected in series with the YSC and then connected between the coil of the KAEP and the power supply input end; the first set of normally open contacts of KAEP is connected between the coil of KAPDW1 and the power input.
5. The control circuit of claim 4, wherein the pantograph command input is a driver pantograph command input and the pantograph command input is a driver pantograph command input, each set of sub-control circuits further comprising: two remote relays KAPCO1 and KAPCO 2;
a group of normally open contacts of KAPCO1 is connected in parallel with a first group of normally open contacts of KAEP, and a group of normally closed contacts is connected with a coil of KAPDW1 and a pantograph lowering command input end;
one set of normally open contacts of KAPCO2 is connected in parallel with the second set of normally open contacts of KAPDW1, and one set of normally closed contacts is connected in series with the third set of normally closed contacts of KAPDW1 and the third set of normally open contacts of KAPU at the PDCV and the power input end.
6. The control circuit of claim 5, wherein each set of sub-control circuits further comprises a dry disconnect disposed between the driver droop command input, the input of the power source, and the main circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420735654.4U CN204279122U (en) | 2014-11-28 | 2014-11-28 | A kind of novel 25KV pantograph control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420735654.4U CN204279122U (en) | 2014-11-28 | 2014-11-28 | A kind of novel 25KV pantograph control circuit |
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| CN204279122U true CN204279122U (en) | 2015-04-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104527435A (en) * | 2014-11-28 | 2015-04-22 | 南车青岛四方机车车辆股份有限公司 | Novel 25KV pantograph control circuit |
| CN106080213A (en) * | 2016-06-17 | 2016-11-09 | 中车南京浦镇车辆有限公司 | A kind of pantagraph current collector isolation control circuit |
| CN106114235A (en) * | 2016-06-23 | 2016-11-16 | 中车南京浦镇车辆有限公司 | Pneumatic pantagraph current collector centralized Control circuit |
| CN110525224A (en) * | 2019-08-20 | 2019-12-03 | 中车青岛四方机车车辆股份有限公司 | Train pantograph logic and intelligent control system based on intelligent control unit |
| CN111308297A (en) * | 2018-12-12 | 2020-06-19 | 中车唐山机车车辆有限公司 | Insulation detection device |
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2014
- 2014-11-28 CN CN201420735654.4U patent/CN204279122U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104527435A (en) * | 2014-11-28 | 2015-04-22 | 南车青岛四方机车车辆股份有限公司 | Novel 25KV pantograph control circuit |
| WO2016082648A1 (en) * | 2014-11-28 | 2016-06-02 | 中车青岛四方机车车辆股份有限公司 | Novel 25kv pantograph control circuit |
| GB2544850A (en) * | 2014-11-28 | 2017-05-31 | Crrc Qingdao Sifang Co Ltd | Novel 25KV pantograph control circuit |
| GB2544850B (en) * | 2014-11-28 | 2017-08-23 | Crrc Qingdao Sifang Co Ltd | Novel 25KV pantograph control circuit |
| CN106080213A (en) * | 2016-06-17 | 2016-11-09 | 中车南京浦镇车辆有限公司 | A kind of pantagraph current collector isolation control circuit |
| CN106080213B (en) * | 2016-06-17 | 2019-03-08 | 中车南京浦镇车辆有限公司 | A kind of pantagraph current collector isolation control circuit |
| CN106114235A (en) * | 2016-06-23 | 2016-11-16 | 中车南京浦镇车辆有限公司 | Pneumatic pantagraph current collector centralized Control circuit |
| CN106114235B (en) * | 2016-06-23 | 2018-07-03 | 中车南京浦镇车辆有限公司 | Pneumatic pantagraph current collector centralized Control circuit |
| CN111308297A (en) * | 2018-12-12 | 2020-06-19 | 中车唐山机车车辆有限公司 | Insulation detection device |
| CN110525224A (en) * | 2019-08-20 | 2019-12-03 | 中车青岛四方机车车辆股份有限公司 | Train pantograph logic and intelligent control system based on intelligent control unit |
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Address after: Chengyang District of Shandong city of Qingdao province Jinhong road 266111 No. 88 Patentee after: CRRC QINGDAO SIFANG CO., LTD. Address before: Chengyang District of Shandong city of Qingdao province Jinhong road 266111 No. 88 Patentee before: CSR Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. |