CN207719801U - A kind of high-voltage frequency converter protective device - Google Patents
A kind of high-voltage frequency converter protective device Download PDFInfo
- Publication number
- CN207719801U CN207719801U CN201820016714.5U CN201820016714U CN207719801U CN 207719801 U CN207719801 U CN 207719801U CN 201820016714 U CN201820016714 U CN 201820016714U CN 207719801 U CN207719801 U CN 207719801U
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- frequency converter
- voltage
- voltage frequency
- breaker
- motor protection
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Abstract
The utility model discloses a kind of high-voltage frequency converter protective devices, including high-voltage frequency converter, HV motor protection device and device for under-voltage releasing equipment；The sub-gate signal entrance and switching signal entrance of the high-voltage frequency converter are connect with high-tension switch cabinet; the separating brake of the high-voltage frequency converter exports and closes a floodgate to export and be connect respectively with the separating brake entrance of HV motor protection device and combined floodgate entrance; the MCB trip signals port of the high-voltage frequency converter connects device for under-voltage releasing equipment; the separating brake outlet connection sub-gate circuit of the HV motor protection device, the sub-gate circuit are all connected with high-voltage circuitbreaker with device for under-voltage releasing equipment.The utility model is designed reasonably protects the safe operation of high-voltage frequency converter.
Description
Technical field
The utility model is related to technical field of electric control more particularly to a kind of high-voltage frequency converter protective devices.
Background technology
The mating high-voltage frequency converter of gas purification compressor is one of most important equipment in chemical plant, arbitrary in these equipment
One goes wrong full factory will all be caused to be stopped work, so normal, the safe and reliable operation of gas purification compressor is to later full factory
Continuous production have vital effect.The inlet wire 10kV high-voltage circuitbreakers of high-voltage frequency converter can action message, to become
The safe and stable operation of frequency device is most important, higher level's breakers of most chemical plant high-voltage frequency converters without undervoltage tripping function,
Once DC power supply dead electricity, frequency converter failure will be unable to tripping high-voltage circuitbreaker, can seriously damage frequency converter, or even can make
At serious accident；High-voltage frequency converter equipment is inherently costly, and protection frequency converter equipment is without damage, can be that company creates
Huge economic benefit.In order to ensure its high-voltage frequency converter safe operation, a kind of high-voltage frequency converter protective device is proposed, on it
Mouth high-voltage circuitbreaker must increase undervoltage tripping function, ensure the safety of high-voltage frequency converter.
Utility model content
The purpose of this utility model is to provide a kind of high-voltage frequency converter protective devices, protect the safety fortune of high-voltage frequency converter
Row.
To achieve the above object, technical solution used by the utility model is：
A kind of high-voltage frequency converter protective device, including high-voltage frequency converter, HV motor protection device and device for under-voltage releasing equipment；
The sub-gate signal entrance and switching signal entrance of the high-voltage frequency converter are connect with high-tension switch cabinet, point of the high-voltage frequency converter
Lock exports and closes a floodgate to export and be connect respectively with the separating brake entrance of HV motor protection device and combined floodgate entrance, the high-pressure frequency-conversion
The MCB trip signals port of device connects device for under-voltage releasing equipment, and the separating brake outlet connection separating brake of the HV motor protection device returns
Road, the sub-gate circuit are all connected with high-voltage circuitbreaker with device for under-voltage releasing equipment.
Further, the combined floodgate outlet of the HV motor protection device is connected with closing circuit, the closing circuit
Connect high-voltage circuitbreaker.
Further, the separating brake entrance of the HV motor protection device respectively with button SB2 and motor operation case
In scram button SB3 connections.
Further, the sub-gate circuit includes breaker secondary plug S4 and rectifier V2, the rectifier V2 in parallel
Switching winding OFF.
Further, the closing circuit includes breaker secondary plug S3, and electricity is in series with breaker secondary plug S3
R0 and relay coil K0 is hindered, is parallel with relay normally open contact K0 with breaker secondary plug S3, the relay normally open touches
Point K0 is sequentially connected switch S1, relay normally closed contact K0 and closing coil ON；The closing coil ON and relay coil K0
It is connect simultaneously with rectifier V2, the breaker secondary plug S3 and rectifier V2 short circuits.
Further, the high-voltage frequency converter uses direct current 220V power supply power supplies with HV motor protection device.
Further, closing locking circuit of breaker is connected between the high-tension switch cabinet and high-voltage circuitbreaker, it is described
Closing locking circuit of breaker includes the secondary normally closed plug S9 of high-voltage circuitbreaker, the secondary normally closed plug S9 of high-voltage circuitbreaker with
Breaker secondary plug S8 is in parallel, the breaker secondary plug S8 connections series connection normally closed switch S3 and rectifier V1, described whole
Stream one end device V1 connect closing coil Y1 with normally closed switch S3 short circuits, the other end.
The utility model has the beneficial effects that：
The utility model provides a kind of high-voltage frequency converter protective device, is connect with high-voltage frequency converter in high-tension switch cabinet, high
Voltage frequency changer is connected to control the breaker control circuit before high-tension motor with HV motor protection device, ensures
Manually and in the case of abnormal automatic divide-shut brake, the folding of breaker is controlled, high-tension motor is made to power on or go electricity；Ensure high pressure
The safely and effectively operation of motor；Increase between the trip signal end of high-voltage frequency converter and high-voltage circuitbreaker simultaneously under-voltage de-
Button device is disconnected high-voltage circuitbreaker by trip signal in the case of frequency converter failure, and frequency converter is made to cut off work electricity in time
Road ensure that the safety of high-voltage frequency converter, avoids the phenomenon that high-voltage circuitbreaker can not disconnect damage high-voltage frequency converter, drops simultaneously
Low economic loss, improves production efficiency.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of high-voltage frequency converter protective device of the utility model.
Fig. 2 is a kind of electric control structure schematic diagram of high-voltage frequency converter protective device of the utility model.
Figure label is：1 is high-voltage frequency converter, and 2 be HV motor protection device, and 3 be sub-gate circuit, and 4 be under-voltage de-
Device is detained, 5 be high-voltage circuitbreaker, and 6 be high-tension switch cabinet, and 7 be closing circuit, and 8 be closing locking circuit of breaker.
Specific implementation mode
Specific embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of high-voltage frequency converter protective device, including high-voltage frequency converter 1, HV motor protection device and
Device for under-voltage releasing equipment 4；The sub-gate signal entrance and switching signal entrance of the high-voltage frequency converter 1 are connect with high-tension switch cabinet 6, described
The separating brake of high-voltage frequency converter 1 export and close a floodgate outlet respectively with the separating brake entrance of HV motor protection device 2 and combined floodgate entrance
The MCB trip signals port of connection, the high-voltage frequency converter 1 connects device for under-voltage releasing equipment 4, the HV motor protection device 2
Separating brake outlet connection sub-gate circuit 3, the sub-gate circuit 3 and device for under-voltage releasing equipment 4 are all connected with high-voltage circuitbreaker 5.
The combined floodgate outlet of the HV motor protection device is connected with closing circuit 7, and the closing circuit 7 connects high pressure
Breaker 5.The separating brake entrance of the HV motor protection device is pressed with the emergency stop in button SB2 and motor operation case respectively
Button SB3 connections, in case of emergency by the way that scram button SB3 is manually operated, disconnecting motor to make it be stopped；It is described
Sub-gate circuit 3 includes breaker secondary plug S4 and rectifier V2, the rectifier V2 parallel connection switching windings OFF.The high pressure
Switchgear 6 is connect with high-voltage frequency converter 1 using 220V conducting wires, and the high-voltage frequency converter 1 is used with HV motor protection device 2
Direct current 220V power supply power supplies.
The closing circuit 7 include breaker secondary plug S3, with breaker secondary plug S3 be in series with resistance R0 and after
Electric apparatus coil K0 is parallel with relay normally open contact K0 with breaker secondary plug S3, and the relay normally open contact K0 is successively
Connecting valve S1, relay normally closed contact K0 and closing coil ON；The closing coil ON and relay coil K0 simultaneously with it is whole
Flow device V2 connections, the breaker secondary plug S3 and rectifier V2 short circuits.
Closing locking circuit of breaker 8, the breaker are connected between the high-tension switch cabinet 6 and high-voltage circuitbreaker 5
Closing locking circuit 8 includes high-voltage circuitbreaker secondary normally closed plug S9, the secondary normally closed plug S9 of high-voltage circuitbreaker and open circuit
Device secondary plug S8 is in parallel, the breaker secondary plug S8 connections series connection normally closed switch S3 and rectifier V1, the rectifier
The one end V1 connect closing coil Y1 with normally closed switch S3 short circuits, the other end.
The model ACS5000A chosen as a kind of embodiment, the present embodiment medium-high voltage frequency converter 1；The high pressure
What motor protecting device 2 was chosen is CSC-241C microcomputer protecting devices.
It is illustrated in figure 2 a kind of circuit connection diagram of 1 protective device of high-voltage frequency converter, the present embodiment is made for attached drawing 2
Further description；It is powered using DC power supply 220V, air switch is respectively connected between DC power anode and cathode, occurred
Fortuitous event directly trips, and protects the safety of circuit；The power supply of DC power anode IKM+ connection HV motor protections device 2
X7-1 and X6-1, the power end X7-8 connection DC power cathode IKM+ of HV motor protection device 2 are held, for being high-voltage electricity
Motivation protective device 2 is powered；DC power anode IKM+ accesses high pressure by hand push button SB1 connection breaker secondary plugs S8
The combined floodgate entrance X7-7 of motor protecting device 2, this circuit are closed a floodgate for Manual test；DC power anode IKM+ connection high pressures
The MCB combined floodgate orders end X18 of frequency converter 1：1, the combined floodgate order for exporting high-voltage frequency converter 1；The MCB of high-voltage frequency converter 1 points
Lock order end X18:The combined floodgate entrance of 2 connection HV motor protection devices 2；The MCB combined floodgate orders end of high-voltage frequency converter 1 connects
The other end of remote switch YK, SK, remote switch YK, SK are respectively connected to 2 shape of high-voltage frequency converter 1 and HV motor protection device
At closed circuit, closes a floodgate for remote control and order input；The MCB separating brake orders end X18 of high-voltage frequency converter 1:3 and DC power supply
Positive IKM+ connections, the separating brake for inputting high-voltage frequency converter 1 instruct, the MCB separating brake orders end X18 of high-voltage frequency converter 1:4 connect
Connect the separating brake entrance of HV motor protection device 2；The trip signal end X18 of high-voltage frequency converter 1:7 connect with positive pole,
X18:8 connect with device for under-voltage releasing equipment 4Y4, and guarantee is tripped in the case of 1 failure of high-voltage frequency converter, directly disconnects high-voltage circuitbreaker
5；The combined floodgate outlet X7-5 connections closing circuit 7 of HV motor protection device 2, separating brake exports X7-4 connections sub-gate circuit 3.
In the course of work, when there is switching signal, switching signal initially enters the MCB combined floodgate orders end of high-voltage frequency converter 1
X18：1, then pass through X18:2 terminals enter HV motor protection device 2, and HV motor protection device 2 is by signal processing
It is closed a floodgate afterwards to high-voltage circuitbreaker 5 by combined floodgate control of export closing circuit 7；When having sub-gate signal, separating brake principle
It is identical as combined floodgate；When in circuit without DC power supply IKM+, it can not can not also be incited somebody to action by switch closing and switch opening signal cut-off breaker
High-voltage frequency converter 1 is cut off away, can damage high-voltage frequency converter 1, causes economic loss, therefore lead to when in circuit without DC power supply
The trip signal end for crossing high-voltage frequency converter 1 is directly that device for under-voltage releasing equipment 4 chooses lock disconnection, protects high-voltage frequency converter 1.
The embodiment of the above, the only preferred embodiment of the utility model not limit the utility model
Practical range, therefore the equivalent change or modification that all structure, feature and principles according to described in the utility model patent range are done,
It should be included in present utility model application the scope of the claims.
Claims (7)
1. a kind of high-voltage frequency converter protective device, which is characterized in that including high-voltage frequency converter（1）, HV motor protection device
（2）And device for under-voltage releasing equipment（4）；The high-voltage frequency converter（1）Sub-gate signal entrance and switching signal entrance and high-tension switch cabinet
（6）Connection, the high-voltage frequency converter（1）Separating brake outlet and close a floodgate outlet respectively with HV motor protection device（2）Point
Lock entrance and the connection of combined floodgate entrance, the high-voltage frequency converter（1）MCB trip signals port connect device for under-voltage releasing equipment（4）, described
HV motor protection device（2）Separating brake outlet connection sub-gate circuit（3）, the sub-gate circuit（3）With device for under-voltage releasing equipment（4）
It is all connected with high-voltage circuitbreaker（5）.
2. a kind of high-voltage frequency converter protective device according to claim 1, which is characterized in that the HV motor protection
Device（2）Combined floodgate outlet be connected with closing circuit（7）, the closing circuit（7）Connect high-voltage circuitbreaker（5）.
3. a kind of high-voltage frequency converter protective device according to claim 1, which is characterized in that the HV motor protection
Device（2）Separating brake entrance connect respectively with the scram button SB3 in button SB2 and motor operation case.
4. a kind of high-voltage frequency converter protective device according to claim 1, which is characterized in that the sub-gate circuit（3）Packet
Include breaker secondary plug S4 and rectifier V2, the rectifier V2 parallel connection switching windings OFF.
5. a kind of high-voltage frequency converter protective device according to claim 2, which is characterized in that the closing circuit（7）Packet
Breaker secondary plug S3 is included, resistance R0 and relay coil K0 are in series with breaker secondary plug S3, it is secondary with breaker
Plug S3 is parallel with relay normally open contact K0, and it is normally closed tactile that the relay normally open contact K0 is sequentially connected switch S1, relay
Point K0 and closing coil ON；The closing coil ON is connect with rectifier V2 simultaneously with relay coil K0, the breaker two
Secondary plug S3 and rectifier V2 short circuits.
6. a kind of high-voltage frequency converter protective device according to claim 1, which is characterized in that the high-voltage frequency converter（1）
With HV motor protection device（2）Using direct current 220V power supply power supplies.
7. a kind of high-voltage frequency converter protective device according to claim 1, which is characterized in that the high-tension switch cabinet（6）
With high-voltage circuitbreaker（5）Between be connected with closing locking circuit of breaker（8）, the closing locking circuit of breaker（8）Including
The secondary normally closed plug S9 of high-voltage circuitbreaker, the secondary normally closed plug S9 of high-voltage circuitbreaker is in parallel with breaker secondary plug S8,
The breaker secondary plug S8 connections series connection normally closed switch S3 and rectifier V1, the one end the rectifier V1 and normally closed switch S3
Short circuit, other end connection closing coil Y1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820016714.5U CN207719801U (en) | 2018-01-05 | 2018-01-05 | A kind of high-voltage frequency converter protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820016714.5U CN207719801U (en) | 2018-01-05 | 2018-01-05 | A kind of high-voltage frequency converter protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207719801U true CN207719801U (en) | 2018-08-10 |
Family
ID=63054382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820016714.5U Expired - Fee Related CN207719801U (en) | 2018-01-05 | 2018-01-05 | A kind of high-voltage frequency converter protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207719801U (en) |
-
2018
- 2018-01-05 CN CN201820016714.5U patent/CN207719801U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180810 Termination date: 20210105 |