CN201252003Y - Three-phase combined mutual inductor special for outdoor transformer districts - Google Patents
Three-phase combined mutual inductor special for outdoor transformer districts Download PDFInfo
- Publication number
- CN201252003Y CN201252003Y CNU2008200153030U CN200820015303U CN201252003Y CN 201252003 Y CN201252003 Y CN 201252003Y CN U2008200153030 U CNU2008200153030 U CN U2008200153030U CN 200820015303 U CN200820015303 U CN 200820015303U CN 201252003 Y CN201252003 Y CN 201252003Y
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- phase
- mutual inductor
- transformer
- instrument transformer
- dedicated
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- Expired - Lifetime
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Abstract
The utility model relates to a three-phase combined mutual inductor special for outdoor transformer districts. The three-phase combined mutual inductor comprises an AC-phase mutual inductor, an O-phase wire connecting terminal and a secondary junction box. The AC-phase mutual inductor and the secondary junction box are fixed on an L-shaped mounting plate in equal interval. Mounting holes on the L-shaped mounting plate for fixing the mutual inductor are adjustable slots. The connecting cable between the AC-phase mutual inductor and the secondary junction box is an armored cable. An O-phase wire connecting terminal is a terminal directly from the secondary junction box, which is welded with an armored cable with a connecting lug. Both ends of the mounting plate in L-shaped structure are designed with hex bolts with adjustable collapsing length; insulating cushion blocks are arranged on the ends of the bolts. The three-phase combined mutual inductor is insulated stably, airtight and used safely, can prevent electricity from being stolen, resist corrosion, and is maintenance free, which is applied widely and installed conveniently. The three-phase combined mutual inductor is integrated with power transformation and measurement.
Description
Technical field
The utility model relates to the low district's electric energy measuring equipment of presenting a theatrical performance as the last item on a programme of electric power system, specifically a kind of outdoor platform district metering dedicated three-phase combination transformer.
Background technology
The low district's electric energy metrical outdoor mutual inductor of presenting a theatrical performance as the last item on a programme is the necessary equipment of electric energy measurement in city net and the rural power grids in the electric power system.Outdoor low voltage metering at present adopts single-phase Outdoor Current Transformer to measure with instrument transformer, perhaps with measuring after the combination of the inner employing of low pressure combined metering box indoor type current transformer; Its weak point is that voltage signal all needs lead-in wire separately, measures of anti-stealing electricity is improper, especially need a section lead to connect from the transformer leading-out terminal to instrument transformer, and this section lead is exactly the main electric position of stealing, and be not easy to find, be the main difficult problem of puzzlement electric-power metering department all the time; Adopt the monophase current instrument transformer to assemble in addition, operation installation specification and cost are higher, and integrated degree is comparatively backward, safeguard and overhaul comparatively complexity of operation.
The utility model content
At the easy stealing of prior art mesolow platform district's electric energy metrical outdoor mutual inductor, install complicated, converting equipment and measuring equipment can not be integrated etc. problem, the utility model provides a kind of and is easy to install, anti-electricity-theft outdoor platform district measures the dedicated three-phase combination transformer.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
The outdoor platform of the utility model district's metering dedicated three-phase combination transformer comprises A～C phase instrument transformer, O phase connection terminal and secondary connection box, A～C phase instrument transformer and secondary connection box equidistantly are fixed on the L shaped mounting panel, on the L type mounting panel fixedly the installing hole of instrument transformer be the elongated hole that can regulate.
Stube cable between described A～C phase instrument transformer and the secondary connection box is an armoured cable; O phase connection terminal is for directly being welded with the armoured cable of connecting ear from the end that the secondary connection box is drawn; The design of overall structure L type mounting panel both side ends has the hexagon-headed bolt of adjustable and retractable length, and there is cross-over block the bolt end; The indent form is adopted in an end of incoming cables of A～C phase instrument transformer, and the outside transparent cover plate with sealing and anti-stealing electricity function that adopts seals, and is fastening by the screw of band lead sealing mouth; Leading-out terminal of A～C phase instrument transformer adopts exposed copper bar, and end of incoming cables of A～C phase instrument transformer and leading-out terminal all are useful on the installing hole of wiring; The instrument transformer inside of A～C three-phase be winding and secondary winding after related electric connects to form, be cast for the full-closed structure of one, the outside above the fold of each instrument transformer is cast with current ratio; The secondary connection box is positioned at the monolithic construction middle and lower part, the outside screw fit sealing that adopts two secondary lids and band lead sealing mouth.
The utlity model has following technique effect and advantage:
1. insulation is stable, and good airproof performance is anti-electricity-theft.The utility model insulate into totally-enclosed dry construction by poured with epoxy resin, thereby changed the present situation that present outdoor threephase current transformer adopts monomer-type assembling, complicated operation, easy stealing, be applicable to that outdoor rated frequency is 50Hz or 60Hz, rated voltage is to do electric current, electric energy measurement use in 0.66kV and the following three-phase power circuit, has solved the problem that outdoor in the past threephase current transformer insulation is unstable, seal poor, easy stealing.
2. corrosion-resistant, non-maintaining, safe in utilization.All-sealed structure of the present utility model has fundamentally solved Outdoor Current Transformer wiring complexity, other maintenance issues such as perishable, improves the reliability of power supply greatly, be widely used in that metering is transformed and new and old circuit in.
3. be widely used, easy for installation.End of incoming cables of the utility model can directly be set in step-down side secondary exit portion, on the mounting panel fixedly the installing hole of instrument transformer be can left and right adjusting elongated hole, can adjust A, B, C, O spaced apart according to on-the-spot installation requirement, satisfied the installation requirement of various model transformers, easy to operate, realize that the power transformation metering is integrated.
Description of drawings
Fig. 1 is the utility model external structure front view;
Fig. 2 is the utility model external structure rearview;
Fig. 3 is the utility model internal structure schematic diagram.
Embodiment
Shown in Fig. 1～3, the utility model comprises A～C phase instrument transformer 1～3, O phase connection terminal 4 and secondary connection box 5, A～C phase instrument transformer 1～3 and secondary connection box 5 equidistantly are fixed on the L shaped mounting panel 6, on the L type mounting panel fixedly the installing hole of instrument transformer be can left and right adjusting elongated hole 7; A～C phase instrument transformer 1～3 is connected with the armoured cable 8 that passes through between the secondary connection box 5; O phase connection terminal 4 is for directly being welded with the cable of connecting ear from the end that secondary connection box 5 is drawn.The design of end, overall structure L type mounting panel 6 left and right sides has the hexagon-headed bolt 9 of adjustable and retractable length, and there is cross-over block 10 the bolt end, during installation, plays the effect of supporting and regulating the instrument transformer height; The indent form is adopted in an end of incoming cables 11 of A～C phase instrument transformer 1～3, and the outside transparent cover plate 12 with sealing and anti-stealing electricity function that adopts seals, and is fastening by the screw of band lead sealing mouth; The leading-out terminal 13 of A～C phase instrument transformer 1～3 adopts exposed copper bar, and end of incoming cables 11 of A～C phase instrument transformer 1～3 and leading-out terminal 13 all are useful on the installing hole of wiring; Instrument transformer 1～3 inside of A～C three-phase is that winding 14 and secondary winding 15 are after related electric connects to form, adopting poured with epoxy resin is the full-closed structure of one, the outside above the fold of each instrument transformer is cast with current ratio, projected current secondary terminal and voltage signal terminal are after armoured cable 8 is introduced the secondary connection box, after being electrically connected by the secondary connection box successively, all be installed at last on the mounting panel; Secondary connection box 5 is positioned at the monolithic construction sidepiece, the outside screw fit sealing that adopts two secondary lids and band lead sealing mouth; The bottom of secondary connection box 5 is provided with client line outlet and terminal clamp, and user's secondary connection cable connects the back and clamps with terminal clamp; One secondary lid and two secondary lids adopt the screw of band lead sealing to tighten, and can play to prevent to get an electric shock and the effect of stealing.
This totally-enclosed threephase current transformer in novel open air is a kind of new product that designs according to national standard fully, employing rolls iron core, utilize the electromagnetic conversion principle, make secondary current can reflect the situation of change of primary current exactly, and pick out the voltage signal terminal at product internal condition electrical principle, product directly is installed in the outdoor three-phase line goes, use as current measurement and electric energy metrical.
Claims (6)
1. an outdoor platform district measures the dedicated three-phase combination transformer, comprise A～C phase instrument transformer (1～3), O phase connection terminal (4) and secondary connection box (5), it is characterized in that: A～C phase instrument transformer (1～3) and secondary connection box (5) equidistantly are fixed on the L shaped mounting panel (6), on the L type mounting panel fixedly the installing hole of instrument transformer be the elongated hole (7) that can regulate.
2. by the described outdoor platform of claim 1 district metering dedicated three-phase combination transformer, it is characterized in that: the stube cable between A～C phase instrument transformer (1～3) and the secondary connection box (5) is armoured cable (8); O phase connection terminal (4) is for directly being welded with the armoured cable (8) of connecting ear from the end that secondary connection box (5) is drawn.
3. by the described outdoor platform of claim 1 district metering dedicated three-phase combination transformer, it is characterized in that: the design of overall structure L type mounting panel (6) both side ends has the hexagon-headed bolt (9) of adjustable and retractable length, and there is cross-over block (10) the bolt end.
4. by the described outdoor platform of claim 1 district metering dedicated three-phase combination transformer, it is characterized in that: the indent form is adopted in an end of incoming cables (11) of A～C phase instrument transformer (1～3), the outside transparent cover plate (12) with sealing and anti-stealing electricity function that adopts seals, and is fastening by the screw of band lead sealing mouth; A leading-out terminal (13) of A～C phase instrument transformer (1～3) adopts exposed copper bar, and an end of incoming cables (11) of A～C phase instrument transformer (1～3) and a leading-out terminal (13) all are useful on the installing hole of wiring.
5. by the described outdoor platform of claim 1 district metering dedicated three-phase combination transformer, it is characterized in that: instrument transformer (1～3) inside of A～C three-phase is that a winding (14) and secondary winding (15) are after related electric connects to form, be cast for the full-closed structure of one, the outside above the fold of each instrument transformer is cast with current ratio.
6. by the described outdoor platform of claim 1 district metering dedicated three-phase combination transformer, it is characterized in that: secondary connection box (5) is positioned at the monolithic construction middle and lower part, the outside screw fit sealing that adopts two secondary lids and band lead sealing mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200153030U CN201252003Y (en) | 2008-08-29 | 2008-08-29 | Three-phase combined mutual inductor special for outdoor transformer districts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200153030U CN201252003Y (en) | 2008-08-29 | 2008-08-29 | Three-phase combined mutual inductor special for outdoor transformer districts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201252003Y true CN201252003Y (en) | 2009-06-03 |
Family
ID=40747677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200153030U Expired - Lifetime CN201252003Y (en) | 2008-08-29 | 2008-08-29 | Three-phase combined mutual inductor special for outdoor transformer districts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201252003Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147859A (en) * | 2013-02-20 | 2013-06-12 | 株洲南方燃气轮机成套制造安装有限公司 | Gas turbine electricity generating apparatus |
| CN104332298A (en) * | 2014-10-30 | 2015-02-04 | 国家电网公司 | Intelligent three-phase integrated voltage transformer of un-grounded system |
-
2008
- 2008-08-29 CN CNU2008200153030U patent/CN201252003Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147859A (en) * | 2013-02-20 | 2013-06-12 | 株洲南方燃气轮机成套制造安装有限公司 | Gas turbine electricity generating apparatus |
| CN103147859B (en) * | 2013-02-20 | 2015-10-21 | 株洲中航动科南方燃气轮机成套制造安装有限公司 | Power set device of combustion turbine |
| CN104332298A (en) * | 2014-10-30 | 2015-02-04 | 国家电网公司 | Intelligent three-phase integrated voltage transformer of un-grounded system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090603 |
|
| CX01 | Expiry of patent term |