CN205920146U - Mutual -inductor in middle of high accuracy high voltage isolation - Google Patents
Mutual -inductor in middle of high accuracy high voltage isolation Download PDFInfo
- Publication number
- CN205920146U CN205920146U CN201620933460.4U CN201620933460U CN205920146U CN 205920146 U CN205920146 U CN 205920146U CN 201620933460 U CN201620933460 U CN 201620933460U CN 205920146 U CN205920146 U CN 205920146U
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- China
- Prior art keywords
- transformer
- voltage
- current transformer
- isolation
- secondary side
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Abstract
The utility model discloses a mutual -inductor in middle of high accuracy high voltage isolation, the power distribution box comprises a box body, be provided with voltage isolation transformer and current transformer in the box, the both ends that both ends that voltage isolation transformer once inclined and current transformer once inclined are external through four insulated wire outlet boxs respectively, and be provided with the wiring ear at insulated wire's end, current transformer's secondary side is provided with centre tapping, the box is provided with six terminals, wherein two terminals are connected with voltage isolation transformer's secondary side both ends electricity respectively, two terminals are connected with current transformer's secondary side electricity respectively, a terminal is connected with the centre tapping electricity, an other terminal is connected with the ground wire electricity, can reform transform current low -voltage mutual inductor calibration equipment, make current low -voltage mutual inductor calibration equipment satisfy GB20840.4 2015 the standard, the transformation expense is less than the cost of the new equipment of purchasing far away, can alleviate the economic burden of enterprise, reach the environmental protection and energy saving mesh.
Description
Technical field
This utility model is related to a kind of voltage, current transfer device, transformer in the middle of particularly a kind of isolation.
Background technology
Transformer domestic at present is low voltage mutual inductor calibration equipment, since gb20840.4-2015 standard implementation, state
Interior many low voltage mutual inductor calibration equipments will update, and meets the calibration equipment price of gb20840.4-2015 standard
High (unit price 700,000 about), purchases and meets the calibration equipment of gb20840.4-2015 standard and bring no small economy to enterprise
Pressure.
Content of the invention
In order to overcome the deficiencies in the prior art, this utility model provides one kind can be to existing to low voltage mutual inductor verification
Device is transformed, and makes existing low voltage mutual inductor calibration equipment meet the high-precision high voltage isolation of gb20840.4-2015 standard
Middle transformer.
This utility model solves its technical problem and be the technical scheme is that
In the middle of a kind of high-precision high voltage isolation, transformer, it is characterised in that including casing, is provided with voltage in described casing
Isolating transformer summation current transformer, the two ends of the two ends summation current transformer primary side of described voltage isolation transformer primary side
Pass through four insulated conductor outlet boxs respectively external, and the end of insulated conductor is provided with connecting ear, described current transformer
Secondary side be provided with centre tap, described casing is provided with six binding posts, wherein two binding posts respectively with described voltage
The secondary side two ends electrical connection of isolating transformer, two binding posts are electrically connected with the secondary side of described current transformer respectively, and one
Binding post is electrically connected with described centre tap, in addition binding post be electrically connected to ground.
Described casing is provided with four high-tension insulators, the lower end of described four high-tension insulators respectively with described voltage every
From transformator primary side two ends summation current transformer primary side two ends connect, upper end respectively with described four insulated conductors
Lower end connects.
The capacity of described voltage isolation transformer is 3-15kva, and output voltage is 0v-450v；Described current transformer
No-load voltage ratio is 5/5a and 5/1a, and precision is 1,/10,000 5/100000.
The bottom of described casing is provided with castor；The side wall of described casing is provided with handle；It is filled with described casing absolutely
Edge medium.
The beneficial effects of the utility model are: transformer strong adaptability in the middle of high-precision high voltage isolation of the present utility model,
Existing low voltage mutual inductor calibration equipment can be transformed, so that existing low voltage mutual inductor calibration equipment is met
Gb20840.4-2015 standard, improvement expenses, well below the cost purchasing new equipment, can mitigate the financial burden of enterprise, reach
To environmental protection and energy saving purpose.
Brief description
With reference to the accompanying drawings and examples this utility model is further illustrated.
Fig. 1 is structural representation of the present utility model.
Specific embodiment
With reference to Fig. 1, transformer in the middle of a kind of high-precision high voltage isolation, including casing, the bottom of described casing is provided with foot
Wheel f, side wall is provided with handle, is provided with voltage isolation transformer pt summation current transformer ct, in described casing in described casing
It is filled with dielectric, this dielectric can be solid insulation or transformer oil.Described voltage isolation transformer pt is once
The two ends of the primary side l1l2 of two ends summation current transformer ct of side ab are passed through four insulated conductors ca, cb, cl1 and cl2 and are drawn
Outside casing, and setting has connecting ear ja, jb, jl1 and jl2, described electricity respectively in the end of insulated conductor ca, cb, cl1 and cl2
The secondary side of current transformer ct is provided with centre tap k2, and described casing is provided with six binding posts la, lb, lk1, lk2, lk3
And lg, described binding post la, lb electrically connected with the secondary side ab two ends of described voltage isolation transformer pt respectively, described binding post
Lk1, lk3 are electrically connected with the secondary side k1k3 of described current transformer ct respectively, described binding post lk2 and described centre tap k2
Electrical connection, described binding post lg be electrically connected to ground.
Described casing is provided with four high-tension insulators ea, eb, el1 and el2, described four high-tension insulator ea, eb,
The lower end of el1 and el2 is respectively with the two ends summation current transformer ct of the primary side ab of described voltage isolation transformer pt once
The two ends of side l1l2 connect, and upper end is connected with the lower end of described four insulated conductors ca, cb, cl1 and cl2 respectively, using high pressure
The connected mode of insulator ea, eb, el1 and el2 can increase the safety of product.
The capacity of described voltage isolation transformer pt is 3-15kva, and output voltage is 0v-450v, described current transformer
The no-load voltage ratio of the primary side l1l2 of ct and secondary side centre tap k1k2 is 5/5a, and primary side l1l2 with the no-load voltage ratio of secondary side k1k3 is
5/1a, precision is 1/10000,2/10000 or 5/100000, and existing low voltage mutual inductor calibration equipment can be transformed,
Existing low voltage mutual inductor calibration equipment is made to meet gb20840.4-2015 standard, improvement expenses is well below purchasing new equipment
Cost (improvement cost is below 100,000), can mitigate the financial burden of enterprise, reach environmental protection and energy saving purpose.
Claims (7)
1. in the middle of a kind of isolation of high-precision high voltage transformer it is characterised in that including casing, be provided with described casing voltage every
From transformator summation current transformer, the two ends of the two ends summation current transformer primary side of described voltage isolation transformer primary side are divided
Not Tong Guo four insulated conductor outlet boxs external, and the end of insulated conductor is provided with connecting ear, described current transformer
Secondary side is provided with centre tap, and described casing is provided with six binding posts, wherein two binding posts respectively with described voltage every
From the electrical connection of the secondary side two ends of transformator, two binding posts are electrically connected with the secondary side of described current transformer respectively, one
Binding post is electrically connected with described centre tap, in addition binding post be electrically connected to ground.
2. high-precision high voltage according to claim 1 isolates middle transformer it is characterised in that described casing is provided with four
High-tension insulator, lower end two ends and the electricity with described voltage isolation transformer primary side respectively of described four high-tension insulators
The two ends of current transformer primary side connect, and upper end is connected with the lower end of described four insulated conductors respectively.
3. the high-precision high voltage middle transformer of isolation according to claim 1 is it is characterised in that described voltage isolates transformation
The capacity of device is 3-15kva, and output voltage is 0v-450v.
4. in the middle of high-precision high voltage according to claim 1 isolation transformer it is characterised in that described current transformer
No-load voltage ratio is 5/5a and 5/1a, and precision is 1,/10,000 5/100000.
5. the high-precision high voltage middle transformer of isolation according to claim 1 is it is characterised in that the bottom of described casing is pacified
Equipped with castor.
6. the high-precision high voltage middle transformer of isolation according to claim 1 is it is characterised in that the side wall of described casing is pacified
Equipped with handle.
7. high-precision high voltage according to claim 1 isolates middle transformer it is characterised in that being filled with described casing
Dielectric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620933460.4U CN205920146U (en) | 2016-08-24 | 2016-08-24 | Mutual -inductor in middle of high accuracy high voltage isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620933460.4U CN205920146U (en) | 2016-08-24 | 2016-08-24 | Mutual -inductor in middle of high accuracy high voltage isolation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205920146U true CN205920146U (en) | 2017-02-01 |
Family
ID=57870298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620933460.4U Expired - Fee Related CN205920146U (en) | 2016-08-24 | 2016-08-24 | Mutual -inductor in middle of high accuracy high voltage isolation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205920146U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015044A (en) * | 2016-08-24 | 2017-08-04 | 何排枝 | Transformer in the middle of a kind of high-precision high voltage isolation |
-
2016
- 2016-08-24 CN CN201620933460.4U patent/CN205920146U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015044A (en) * | 2016-08-24 | 2017-08-04 | 何排枝 | Transformer in the middle of a kind of high-precision high voltage isolation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20170201 Termination date: 20210824 |