CN206773170U - Current capacity case - Google Patents
Current capacity case Download PDFInfo
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- CN206773170U CN206773170U CN201720400328.1U CN201720400328U CN206773170U CN 206773170 U CN206773170 U CN 206773170U CN 201720400328 U CN201720400328 U CN 201720400328U CN 206773170 U CN206773170 U CN 206773170U
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- toggle switch
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- casing
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- 230000001939 inductive effect Effects 0.000 claims abstract description 16
- 239000004593 Epoxy Substances 0.000 claims description 7
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 4
- 210000003298 dental enamel Anatomy 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 229910000896 Manganin Inorganic materials 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013401 experimental design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model discloses a kind of current capacity case, including load casing, 2 binding posts, 1 earthing rod and 5 toggle switch being arranged on the panel of load casing, and interior 5 groups of inductive resistance elements located at load casing；The earthing of casing of the earthing rod and load casing；The utility model has the advantage of pass through binding post, earthing rod and toggle switch, and the setting of inductive resistance element, realize the inductive resistance element for controlling different impedance values respectively by toggle switch, the output of different load value can be provided, current transformer error test requirements document can be met, and can significantly reduce the volume and weight of Burden box, and it is easy to live carrying while saving making material, it is simple in construction, utilization rate is high.
Description
Technical field
It the utility model is related to current transformer technical field of measurement and test, more particularly to a kind of special electric current of 1000kV extra-high voltages
Burden box.
Background technology
National JJG1021-2007《Electric power mutual-inductor》Vertification regulation, JJG313-2010《Verification of Measuring Current Transformer》Inspection
Journey of establishing rules regulation, when current transformer error measures, defined load need to be added in subject secondary winding in current transformer, i.e.,
Rated load and lower limited load.When extra-high voltage 1000kV current transformer errors are tested, need under normal circumstances measuring around
The error of group, measurement winding and protective winding, required load value have 1VA, 5VA, 10VA, 12VA and 15VA, rated current 1A,
Power factor is 0.8.
But traditional current capacity case, because need to meet various voltage class current transformer error test, power because
Number is made by 1.0 and 0.8, and rated current is made by 5A and 1A, and load value, and most current capacity case volumes are planted provided with more than tens
It is 2.5VA to determine the minimal negative charge values that electric current is 1A, power factor is 0.8, can not meet the extra-high voltage current transformers of 1000kV
The requirement of light duty test；In addition, conventional current Burden box is also present, volume is big, weight is heavy, many load value utilization rates are not high, no
It is easy to the shortcomings such as scene carrying.
Utility model content
It is a primary object of the present invention to overcome deficiency of the prior art, there is provided a kind of 1000kV extra-high voltages Special electric
Stream load case, tested especially suitable for extra-high voltage current transformer error.
Technical problem to be solved in the utility model be to provide compact-sized, convenient disassembly, make easily, safety can
Lean on, the special current capacity case of practical 1000kV extra-high voltages, meeting the load value premise of current transformer error experiment
Under, it can significantly reduce the volume and weight of Burden box, consequently facilitating scene carries, improves utilization rate.
To achieve these goals, the technical solution adopted in the utility model is：Current capacity case, including load casing,
2 binding posts, 1 earthing rod and 5 toggle switch being arranged on the panel of load casing, and it is interior located at load casing
5 groups of inductive resistance elements；The earthing of casing of the earthing rod and load casing；
2 binding posts are respectively the first binding post and the second binding post, 5 toggle switch be respectively successively into
Arrange the first toggle switch, the second toggle switch, the 3rd toggle switch, the 4th toggle switch and the 5th toggle switch of distribution；Institute
State that the impedance value of 5 groups of inductive resistance elements is variant, the first resistor being respectively sequentially connected in series and the first inductance, be sequentially connected in series
Second inductance and second resistance, the 3rd inductance being sequentially connected in series and 3rd resistor, the 4th inductance being sequentially connected in series and the 4th resistance,
And the 5th inductance being sequentially connected in series and the 5th resistance；
The common port of first toggle switch and the second toggle switch close contact, the second toggle switch common port with
3rd toggle switch closes contact, the common port of the 3rd toggle switch and pass contact, the 4th toggle switch of the 4th toggle switch
Common port be connected with the pass contact of the 5th toggle switch, the common port of the 5th toggle switch is connected with the second binding post；
Input of the pass contact of first toggle switch respectively with the first binding post and first resistor is connected, the first button
The contact of opening of sub switch is connected with the output end of the first inductance with the input of the second inductance respectively, and opening for the second toggle switch is tactile
Point is connected with the output end of second resistance with the input of the 3rd inductance respectively, and the 3rd toggle switch opens contact respectively with the 3rd
The output end of resistance is connected with the input of the 4th inductance, and the 4th toggle switch opens output end of the contact respectively with the 4th resistance
It is connected with the input of the 5th inductance, the output end for opening contact and the 5th resistance of the 5th toggle switch.
The first resistor, second resistance, 3rd resistor, the 4th resistance and the 5th resistance make by manganin wire.
First inductance, the second inductance, the 3rd inductance, the 4th inductance and the 5th inductance are not closed by enamel covered wire coiling
Silicon steel sheet make.
The access rated current of first binding post is 1A, and 5 toggle switch control 1VA, 5VA, 10VA, 12VA respectively
With five kinds of different load values of 15VA.
5 groups of inductive resistance elements by band be fixed on epoxy plate in be located at load casing.
The epoxy plate is connected on the structure of load casing with Burden box body phase inside by Corner Strapped.
The utility model has the advantage of by binding post, earthing rod and toggle switch, and inductive resistance element is set
Put, realize the inductive resistance element for controlling different impedance values respectively by toggle switch, using the teaching of the invention it is possible to provide the output of different load value, can
Meet current transformer error test requirements document, and can significantly reduce the volume and weight of Burden box, while saving making material
It is easy to live carrying, it is simple in construction, utilization rate is high.
Brief description of the drawings
The content of every width accompanying drawing expression in the utility model specification is briefly described below：
Fig. 1 is the panel construction schematic diagram of current capacity case；
Fig. 2 is the circuit connecting line figure of current capacity case.
Embodiment
As shown in Figures 1 and 2, the special current capacity case of a kind of 1000kV extra-high voltages, including load casing 1, are arranged at negative
2 binding posts, 1 earthing rod D and 5 toggle switch on the panel 10 of lotus casing 1, and interior 5 groups located at load casing 1
Inductive resistance element；The earthing of casing of the earthing rod and load casing 1.
2 binding posts are respectively the first binding post 1A and the second binding post Z, 5 toggle switch be respectively according to
Secondary the first toggle switch K1 being in a row distributed, the second toggle switch K2, the 3rd toggle switch K3, the 4th toggle switch K4 and the 5th
Toggle switch K5；The impedance value of 5 groups of inductive resistance elements is variant, the first resistor R1 being respectively sequentially connected in series and first
Inductance L1, the second inductance L2 being sequentially connected in series and second resistance R2, the 3rd inductance L3 being sequentially connected in series and 3rd resistor R3, successively
The 4th inductance L4 and the 4th resistance R4 and the 5th inductance L5 being sequentially connected in series and the 5th resistance R5 of series connection.
As shown in Fig. 2 the first toggle switch K1 common port and the second toggle switch K2 pass contact OFF, second
Pass contact OFF, the 3rd toggle switch the K3 common port and the 4th button of toggle switch K2 common port and the 3rd toggle switch K3
Sub switch K4 pass contact OFF, the 4th toggle switch K4 common port is connected with the 5th toggle switch K5 pass contact OFF,
5th toggle switch K5 common port is connected with the second binding post Z.
The pass contact OFF of first toggle switch K1 input phases with the first binding post 1A and first resistor R1 respectively
Even, the first toggle switch K1 contact ON that opens is connected with the first inductance L1 output end with the second inductance K2 input respectively,
The second toggle switch K2 contact ON that opens is connected with second resistance R2 output end with the 3rd inductance L3 input respectively, and the 3rd
The toggle switch K3 contact ON that opens is connected with 3rd resistor R3 output end with the 4th inductance L4 input respectively, the 4th button
Switch K4 output ends of the contact ON respectively with the 4th resistance R4 of opening is connected with the 5th inductance L5 input, the 5th toggle switch
The K5 output end for opening contact ON and the 5th resistance R5.
Resistance in 5 groups of inductive resistance elements is made by manganin wire, and inductance is by the inc silicon steel sheet of enamel covered wire coiling
Making, silicon steel sheet and enamel covered wire produce 5 inductor windings, one end of each inductor winding is connected with a toggle switch,
The other end is connected with one end of a resistance, and the other end of resistance reconnects toggle switch.5 groups of inductive resistance elements are connected respectively
The impedance value different into 5 kinds, the access rated current of the first binding post is 1A, and it is 0.8 to form power factor, shares 5 kinds of loads
Value：1VA, 5VA, 10VA, 12VA, 15VA, it is fully able to the error test requirement for meeting extra-high voltage current transformer.5 kinds of loads
Value is controlled by 5 toggle switch, if opening multiple toggle switch simultaneously, is defined so that load value is big, if such as getting to control simultaneously
1VA and 15VA processed toggle switch, now load value is 15VA, simple to operate.
Circuit diagram as shown in Figure 2, concretely：L1 and R1 series impedances are 1 Ω, and L1, R1 are connected with L2, R2 and impedance
For 5 Ω, L1, R1, L2, R2 connect with L3, R3 and impedance is 10 Ω, and L1, R1, L2, R2, L3, R3 connect with L4, R4 and impedance is
12 Ω, L1, R1, L2, R2, L3, R3, L4, R4 connect with L5, R5 and impedance is 15 Ω, rated current 1A, therefore load value is distinguished
For 1VA, 5VA, 10VA, 12VA and 15VA.
When K1 is closed, K2~K5 disconnects, and R1 and L1 access circuits, Burden box load value is 1VA.
When K2 is closed, K3~K5 is disconnected, and no matter K1 is closed or disconnected, and R1, L1 and R2, L2 access circuit, Burden box
Load value is 5VA.
When K3 is closed, K4~K5 is disconnected, and no matter K1, K2 are closed or disconnected, and R1, L1, R2, L2 and R3, L3 access electricity
Road, Burden box load value are 10VA.
When K4 is closed, K5 is disconnected, and no matter K1, K2, K3 are closed or disconnected, and R1, L1, R2, L2, R3, L3 and R4, L4 connect
Enter circuit, Burden box load value is 12VA.
When K5 is closed, no matter K1, K2, K3, K4 are closed or disconnected, and 5 groups of resistance, inductance access circuit, and Burden box is born
Charge values are 15VA.
Further, the length of the load casing 1 is respectively 245mm, 75mm, 155mm, realizes the occupancy of equipment
Space is smaller, is easy to live carrying.
Further, 5 groups of inductive resistance elements are fixed on epoxy plate by band, and epoxy plate passes through Corner Strapped
On structure, it is fixed with that the entire structure of epoxy plate is interior again to be located at Burden box, it is compact-sized, solid and reliable.
Innovative point of the present utility model is, aims at the 1000kV extra-high voltages of extra-high voltage current transformer error experimental design
Special current capacity case, the rated current of the Burden box is 1A, and capacity is 1VA~15VA, rated frequency 50Hz, is meeting electricity
Under the premise of the load value of current transformer error test, it can significantly reduce the volume and weight of Burden box, consequently facilitating scene carrying,
Improve utilization rate.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that the utility model is implemented not by above-mentioned
The limitation of mode, if the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is employed, or not
It is improved by the present invention design and technical scheme directly apply to other occasions, the scope of protection of the utility model it
It is interior.
Claims (6)
1. current capacity case, it is characterised in that：Including load casing, 2 binding posts, 1 being arranged on the panel of load casing
Individual earthing rod and 5 toggle switch, and interior 5 groups of inductive resistance elements located at load casing；The earthing rod and Burden box
The earthing of casing of body；
2 binding posts are respectively the first binding post and the second binding post, and 5 toggle switch are respectively in a row to divide successively
The first toggle switch, the second toggle switch, the 3rd toggle switch, the 4th toggle switch and the 5th toggle switch of cloth；Described 5 groups
The impedance value of inductive resistance element is variant, the first resistor being respectively sequentially connected in series and the first inductance, second be sequentially connected in series
Inductance and second resistance, the 3rd inductance being sequentially connected in series and 3rd resistor, the 4th inductance being sequentially connected in series and the 4th resistance and
The 5th inductance being sequentially connected in series and the 5th resistance；
The common port of first toggle switch and the pass contact of the second toggle switch, the common port and the 3rd of the second toggle switch
The pass contact for closing contact, the common port of the 3rd toggle switch and the 4th toggle switch of toggle switch, the public affairs of the 4th toggle switch
End is connected with the pass contact of the 5th toggle switch altogether, and the common port of the 5th toggle switch is connected with the second binding post；
Input of the pass contact of first toggle switch respectively with the first binding post and first resistor is connected, and the first button is opened
The contact of opening closed is connected with the output end of the first inductance with the input of the second inductance respectively, and the second toggle switch opens contact point
Be not connected with the output end of second resistance with the input of the 3rd inductance, the 3rd toggle switch open contact respectively with 3rd resistor
Output end be connected with the input of the 4th inductance, the 4th toggle switch open contact respectively with the output end of the 4th resistance and the
The input of five inductance is connected, the output end for opening contact and the 5th resistance of the 5th toggle switch.
2. current capacity case according to claim 1, it is characterised in that：The first resistor, second resistance, the 3rd electricity
Resistance, the 4th resistance and the 5th resistance make by manganin wire.
3. current capacity case according to claim 1, it is characterised in that：First inductance, the second inductance, the 3rd electricity
Sense, the 4th inductance and the 5th inductance are made by the inc silicon steel sheet of enamel covered wire coiling.
4. according to the current capacity case described in claim 1,2 or 3, it is characterised in that：The access of first binding post is specified
Electric current is 1A, and 5 toggle switch control five kinds of different load values of 1VA, 5VA, 10VA, 12VA and 15VA respectively.
5. current capacity case according to claim 4, it is characterised in that：5 groups of inductive resistance elements are consolidated by band
Load casing is located in being scheduled on epoxy plate.
6. current capacity case according to claim 5, it is characterised in that：The epoxy plate is located inside by Corner Strapped
Connect on the structure of load casing with Burden box body phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720400328.1U CN206773170U (en) | 2017-04-17 | 2017-04-17 | Current capacity case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720400328.1U CN206773170U (en) | 2017-04-17 | 2017-04-17 | Current capacity case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206773170U true CN206773170U (en) | 2017-12-19 |
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ID=60630345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720400328.1U Active CN206773170U (en) | 2017-04-17 | 2017-04-17 | Current capacity case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206773170U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387859A (en) * | 2018-05-02 | 2018-08-10 | 广州赛宝计量检测中心服务有限公司 | Measurement and calibration fictitious load, measurement and calibration instrument and the measurement and calibration system |
-
2017
- 2017-04-17 CN CN201720400328.1U patent/CN206773170U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387859A (en) * | 2018-05-02 | 2018-08-10 | 广州赛宝计量检测中心服务有限公司 | Measurement and calibration fictitious load, measurement and calibration instrument and the measurement and calibration system |
| CN108387859B (en) * | 2018-05-02 | 2023-11-21 | 广州赛宝计量检测中心服务有限公司 | Analog load for metering calibration, metering calibration instrument and metering calibration system |
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