CN208479165U - A kind of power quality controlling device with ground protection function - Google Patents
A kind of power quality controlling device with ground protection function Download PDFInfo
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- CN208479165U CN208479165U CN201821166610.9U CN201821166610U CN208479165U CN 208479165 U CN208479165 U CN 208479165U CN 201821166610 U CN201821166610 U CN 201821166610U CN 208479165 U CN208479165 U CN 208479165U
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- 239000003990 capacitor Substances 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 230000006870 function Effects 0.000 description 8
- 238000013024 troubleshooting Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a kind of power quality controlling devices with ground protection function, including sampling module, computing module, control module and circuit protection module, circuit protection module includes disconnecting switch QS, one end of the disconnecting switch QS is connected with input terminal U1, the other end of disconnecting switch QS is connected with one end of resistance R1, one end of resistance R2 and one end of capacitor C1, the other end of resistance R2 is connected with one end of grounding relay KE1, the other end of resistance R1 is connected with the cathode of diode D1, and it is connected with the other end of the other end of capacitor C1 and grounding relay KE1, the anode of diode D1 is connected with the anode of diode D2, one end of resistance R3 and one end of resistance R4, the other end of resistance R4 is connected with output end U0.The utility model is designed reasonably, it is practical, it can effectively avoid causing damages to personnel and equipment when equipment live, substantially increase the safety of equipment operation.
Description
Technical field
The utility model relates to electrical equipment technical field more particularly to a kind of power qualities with ground protection function
Controlling device.
Background technique
Protective grounding is the electrifications such as framework and overhead line structures to prevent the metal shell of electric device, power distribution equipment danger
And the person and equipment safety and the ground connection that carries out.So-called protective grounding is exactly will be not charged under normal circumstances, and in insulating materials
The electric appliance metal part that may be charged after damage or in the case of other, a kind of protection being reliably connected with conducting wire and grounding body
The mode of connection.Ground protection is generally used in the power supply system that distribution transformer neutral point is not directly grounded, to guarantee when electricity
The voltage-to-ground that gas equipment generates when leaking electricity because of insulation damages is no more than safe range.
Do not have preferable ground protection function in the common power quality controlling device of people at present, is actually using
In, it when crust of the device electrification, is easy to cause damages to personnel and equipment, so we, which are badly in need of one kind, has the function of ground protection
Power quality controlling device solve the above problems.
Utility model content
Purpose of the utility model is to solve disadvantages existing in the prior art, and there is the one kind proposed ground connection to protect
The power quality controlling device of protective function.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of power quality controlling device with ground protection function, including sampling module, computing module, control module
And circuit protection module, circuit protection module include disconnecting switch QS, one end of the disconnecting switch QS is connected with input terminal U1,
The other end of disconnecting switch QS is connected with one end of one end of resistance R1, one end of resistance R2 and capacitor C1, and resistance R2's is another
End is connected with one end of grounding relay KE1, and the other end of resistance R1 is connected with the cathode of diode D1, and another with capacitor C1
One end is connected with the other end of grounding relay KE1, and the anode of diode D1 is connected with the anode of diode D2, resistance R3
One end and resistance R4 one end, the other end of resistance R4 is connected with output end U0, and is connected with the cathode of diode D2, electricity
The other end of resistance R3 is connected with one end of grounding relay KE2, and the other end of grounding relay KE2 is connected with intermediate relay KA
One end, intermediate relay KA the other end ground connection.
Preferably, the model of the grounding relay KE1 and grounding relay KE2 is DL-11.
Preferably, the model of the diode D1 and diode D2 is 1N4001.
Preferably, the resistance value of the resistance R1, resistance R2, resistance R3 and resistance R4 be followed successively by 10K Ω, 10K Ω, 200 Ω,
1KΩ。
Preferably, the capacitance of the capacitor C1 is followed successively by 220uF.
Preferably, the model DL-21C of the model SHY-125 of the disconnecting switch QS, intermediate relay KA.
Compared with prior art, the utility model has the beneficial effects that
In the utility model, when equipment surface electrification, input terminal U1 input current, grounding relay KE2 movement is attracted,
Its auxiliary interlock apparatus makes the main circuit breaker opening coil of equipment obtain electric tripping, makes device powers down, to protect equipment, be grounded at this time after
Electric appliance KE1 is disconnected, and circuit, which seals in resistance R1 and can be avoided, high current occurs and scaling loss grounding relay KE1, while via ground connection
Relay KE1 itself interlocking connects " self-locking " circuit with intermediate relay KA interlocking is restored, and keeps signal memory, trouble shooting
Afterwards, by the main circuit breaker closing operation of equipment, the normally closed interlocking disconnection of intermediate relay KA restores grounding relay KE2, if
Determine in circuit that cut-off disconnecting switch QS is overhauled, and the utility model is designed reasonably is practical when having some damage,
It can effectively avoid causing damages to personnel and equipment when equipment live, substantially increase the safety of equipment operation.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of power quality controlling device with ground protection function in circuit protection
The circuit diagram of module；
Fig. 2 be the utility model proposes a kind of power quality controlling device with ground protection function theory structure
Block diagram.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Referring to Fig.1-2, a kind of power quality controlling device with ground protection function, including sampling module, operation mould
Block, control module and circuit protection module, circuit protection module include disconnecting switch QS, and one end of disconnecting switch QS is connected with defeated
Enter and hold U1, the other end of disconnecting switch QS is connected with one end of one end of resistance R1, one end of resistance R2 and capacitor C1, resistance R2
The other end be connected with one end of grounding relay KE1, the other end of resistance R1 is connected with the cathode of diode D1, and and capacitor
The other end of C1 is connected with the other end of grounding relay KE1, the anode of diode D1 be connected with diode D2 anode,
One end of resistance R3 and one end of resistance R4, the other end of resistance R4 are connected with output end U0, and the cathode phase with diode D2
Connection, the other end of resistance R3 are connected with one end of grounding relay KE2, and the other end of grounding relay KE2 is connected with centre
One end of relay KA, the other end ground connection of intermediate relay KA, input terminal U1 input current, grounding relay KE2 movement are inhaled
It closes, auxiliary interlock apparatus makes the main circuit breaker opening coil of equipment obtain electric tripping, makes device powers down, to protect equipment, connects at this time
Ground relay KE1 is disconnected, and circuit, which seals in resistance R1 and can be avoided, high current occurs and scaling loss grounding relay KE1, while via
Grounding relay KE1 itself interlocking connects " self-locking " circuit with intermediate relay KA interlocking is restored, and keeps signal memory, failure solution
After removing, by the main circuit breaker closing operation of equipment, the normally closed interlocking disconnection of intermediate relay KA restores grounding relay KE2,
If it is determined that having in circuit, when a little damaging, cut-off disconnecting switch QS is overhauled, the utility model is designed reasonably, practicability
By force, it can effectively avoid causing damages to personnel and equipment when equipment live, substantially increase the safety of equipment operation.
In the utility model, the model of grounding relay KE1 and grounding relay KE2 are DL-11, diode D1 and two
The model of pole pipe D2 is 1N4001, resistance R1, resistance R2, resistance R3 and resistance R4 resistance value be followed successively by 10K Ω, 10K Ω,
200 Ω, 1K Ω, the capacitance of capacitor C1 are followed successively by 220uF, the model SHY-125 of disconnecting switch QS, the type of intermediate relay KA
It number is DL-21C, input terminal U1 input current, grounding relay KE2 movement is attracted, and auxiliary interlock apparatus makes the main circuit breaker of equipment
Opening coil obtains electric tripping, makes device powers down, to protect equipment, grounding relay KE1 is disconnected at this time, and circuit seals in resistance R1
It can be avoided and high current occur and scaling loss grounding relay KE1, while being interlocked via grounding relay KE1 itself and restoring intermediate
" self-locking " circuit is connected in relay KA interlocking, keeps signal memory, after trouble shooting, by the main circuit breaker combined floodgate behaviour of equipment
Make, the normally closed interlocking disconnection of intermediate relay KA restores grounding relay KE2, however, it is determined that when having some damage in circuit, can cut
Disconnected disconnecting switch QS, is overhauled, and the utility model is designed reasonably is practical, when can effectively avoid equipment live pair
Personnel and equipment cause damages, and substantially increase the safety of equipment operation.
Working principle: the utility model, which belongs to, electrical source protecting equipment, by the way that circuit protection mould is arranged between equipment and ground
Block is to avoid equipment surface electrification from causing damages people or equipment, and when equipment surface electrification, input terminal U1 input current is connect
Relay KE2 movement in ground is attracted, and auxiliary interlock apparatus makes the main circuit breaker opening coil of equipment obtain electric tripping, makes device powers down, from
And protect equipment, grounding relay KE1 is disconnected at this time, circuit seal in resistance R1 can be avoided there is high current and scaling loss ground connection after
Electric appliance KE1, while " self-locking " circuit is connected with intermediate relay KA interlocking is restored via grounding relay KE1 itself interlocking, it protects
Signal memory is held, after trouble shooting, by the main circuit breaker closing operation of equipment, the normally closed interlocking disconnection of intermediate relay KA makes to connect
Ground relay KE2 restores, however, it is determined that when having some damage in circuit, disconnecting switch QS can be cut off, overhauled.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (6)
1. a kind of power quality controlling device with ground protection function, including sampling module, computing module, control module and
Circuit protection module, circuit protection module include disconnecting switch QS, which is characterized in that one end of the disconnecting switch QS is connected with
Input terminal U1, the other end of disconnecting switch QS are connected with one end of one end of resistance R1, one end of resistance R2 and capacitor C1, resistance
The other end of R2 is connected with one end of grounding relay KE1, and the other end of resistance R1 is connected with the cathode of diode D1, and with electricity
The other end for holding C1 is connected with the other end of grounding relay KE1, and the anode of diode D1 is being connected with diode D2 just
Pole, one end of resistance R3 and resistance R4 one end, the other end of resistance R4 is connected with output end U0, and the cathode with diode D2
It is connected, the other end of resistance R3 is connected with one end of grounding relay KE2, during the other end of grounding relay KE2 is connected with
Between relay KA one end, intermediate relay KA the other end ground connection.
2. a kind of power quality controlling device with ground protection function according to claim 1, which is characterized in that institute
The model for stating grounding relay KE1 and grounding relay KE2 is DL-11.
3. a kind of power quality controlling device with ground protection function according to claim 1, which is characterized in that institute
The model for stating diode D1 and diode D2 is 1N4001.
4. a kind of power quality controlling device with ground protection function according to claim 1, which is characterized in that institute
The resistance value for stating resistance R1, resistance R2, resistance R3 and resistance R4 is followed successively by 10K Ω, 10K Ω, 200 Ω, 1K Ω.
5. a kind of power quality controlling device with ground protection function according to claim 1, which is characterized in that institute
The capacitance for stating capacitor C1 is followed successively by 220uF.
6. a kind of power quality controlling device with ground protection function according to claim 1, which is characterized in that institute
State the model SHY-125 of disconnecting switch QS, the model DL-21C of intermediate relay KA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821166610.9U CN208479165U (en) | 2018-07-23 | 2018-07-23 | A kind of power quality controlling device with ground protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821166610.9U CN208479165U (en) | 2018-07-23 | 2018-07-23 | A kind of power quality controlling device with ground protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208479165U true CN208479165U (en) | 2019-02-05 |
Family
ID=65207915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821166610.9U Expired - Fee Related CN208479165U (en) | 2018-07-23 | 2018-07-23 | A kind of power quality controlling device with ground protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208479165U (en) |
-
2018
- 2018-07-23 CN CN201821166610.9U patent/CN208479165U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190205 |
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| CF01 | Termination of patent right due to non-payment of annual fee |