CN205542366U - Punching current transformer - Google Patents
Punching current transformer Download PDFInfo
- Publication number
- CN205542366U CN205542366U CN201620051443.8U CN201620051443U CN205542366U CN 205542366 U CN205542366 U CN 205542366U CN 201620051443 U CN201620051443 U CN 201620051443U CN 205542366 U CN205542366 U CN 205542366U
- Authority
- CN
- China
- Prior art keywords
- winding
- current transformer
- protective
- straight
- protective case
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a punching current transformer, including the protective case, set up once cable via hole at the center of this protective case the built -in pouring body that is equipped with of protective case, by being provided with measurement winding and protection winding on going respectively in the pouring body, the measurement winding is used for being connected with the measuring equipment, the protection winding is used for being connected with outside relay or protection switch the top of the pouring body is provided with first wiring subassembly and second wiring subassembly respectively, first wiring subassembly and measurement winding electric connection, second wiring subassembly and protection winding electric connection. It is showing the effect: to measure the winding and the protection winding is integrative sets up, and when realizing traditional mutual -inductor measurement measuring function, the protection winding can provide a signal and give relay or protection switch, and relay or switch receive that the signal will supply interruption, play the guard action to entire system.
Description
Technical field
This utility model relates to current transformer technical field, specifically, is a kind of punching
Formula current transformer.
Background technology
Current transformer principle is based on electromagnetic induction principle.Current transformer is by closing
Unshakable in one's determination and winding forms.Its umber of turn is little, goes here and there at the circuit needing to measure electric current
In, therefore it often has whole electric currents of circuit to flow through, and Secondary Winding turn ratio is more, concatenation
In measuring instruments and protective loop, operationally, its secondary circuit is all the time for current transformer
Being Guan Bi, therefore the impedance of measuring instruments and protective loop series coil is the least, Current Mutual Inductance
The duty of device is close to short circuit.
But, traditional measurement Current Transformer cannot function as protective current transformer, and uses,
Protective current transformer, cannot function as Verification of Measuring Current Transformer and uses, and the most individually has
The standby function measured simultaneously and protect.
Summary of the invention
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of centre path current
Transformer, this transformer can realize Verification of Measuring Current Transformer and protection Current Mutual Inductance simultaneously
Device function.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is as follows:
A kind of straight-through current transformer, it it is critical only that: includes protective case, in this protective case
The heart offers a cable via, is equiped with pour mass, in described pour mass in described protective case
Being respectively arranged with measure winding and protective winding from down to up, described measure winding is used for and metering
Equipment connects, and described protective winding is for being connected, described with external relay or protection switch
The top of pour mass is respectively arranged with the first connector assembly and the second connector assembly, and described first
Connector assembly is electrically connected with measure winding, and described second connector assembly electrically connects with protective winding
Connect.
This transformer, by being wholely set with protective winding by measure winding, is realizing tradition mutual inductance
While the function of device measurement, when faults such as system are short-circuited, or cable flows
When crossing the biggest abnormal electric current, the protective winding of transformer is provided that a signal is to relay
Device or protection switch, relay or switch receive signal and shut off power supply, to whole system
System plays a protective role, thus avoids damaging electrical equipment, and can effectively prevent security incident
Generation.
Further, described measure winding is consistent with the winding structure of protective winding, wherein said
Measure winding includes a circular iron core, is covered with the first insulating barrier, at this on this iron core
It is wound with secondary coil on first insulating barrier, described Secondary Winding is also covered with the second insulation
Layer.
Pass through said structure so that transformer simple in construction, big electric current can be become by a certain percentage
For small area analysis, and by electrical secondary system and high-voltage isolating such that it is able to stable for measuring equipment
The current signal of circuit change is provided.
Further, described first insulating barrier and the second insulation layer structure are consistent, and by wrinkle
Paper and PVC tape are constituted.
Further, the sidewall of a described cable via is fixed with at least one cable solid
Determine fastener.
By above-mentioned cable fixing clamp/clip part, it is possible to stable samples to the electric current in cable,
It is thus possible to continual and steady offer current signal.
Further, in order to ensure structural strength and the service life of this transformer, described protective case
Being made up of with cylindrical inner wall cylindrical outer wall that is highly consistent and that be arranged concentrically, described pour mass is positioned at
Between described outer wall and inwall.
Further, the parameter of described measure winding is 500/5A, 5VA 0.2S level；Institute
The parameter stating protective winding is 500/5A, 5VA 10P10 level.
Remarkable result of the present utility model is: be wholely set with protective winding by measure winding,
While realizing the function of tradition transformer measurement, when the faults such as system is short-circuited or electricity
The when that cable flowing through abnormal big electric current, it is provided that a signal is to relay or protection
Switch, relay or switch receive signal and shut off power supply, whole system is played protection
Effect, thus avoid damaging electrical equipment, and can effectively prevent the generation of security incident.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the upward view of Fig. 1；
Fig. 3 is the structural representation of winding；
Fig. 4 is the sectional drawing of Fig. 3.
Detailed description of the invention
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model and operation principle are made into
One step describes in detail.
As shown in Figure 1 to 4, a kind of straight-through current transformer, including protective case 1, protects at this
The center of shell 1 offers a cable via 2, is equiped with pour mass 3 in described protective case 1,
Described pour mass 3 is respectively arranged with measure winding 4 and protective winding 5 from down to up, described
Measure winding 4 is for being connected with measuring equipment, and described protective winding 5 is used for and external relay
Or protection switch connects, it is respectively arranged with first in the left and right sides at described pour mass 3 top and connects
Line component 6 and the second connector assembly 7, and described first connector assembly 6 and the second wiring group
Part 7 is oppositely arranged, and to facilitate wiring, described first connector assembly 6 is electrical with measure winding 4
Connecting, described second connector assembly 7 is electrically connected with protective winding 5.
From figure 1 it appears that described first connector assembly 6 and the second connector assembly 7 are tied
Structure is consistent, is constituted by two binding posts, is additionally provided with crossbeam between two binding posts
Projection, this crossbeam projection is used for ensureing interelectrode distance and surface creepage distance, thus prevents two
Secondary short circuit.
Seeing accompanying drawing 2, described protective case 1 is by cylindrical outer wall 11 that is highly consistent and that be arranged concentrically
Constituting with cylindrical inner wall 12, described pour mass 3 is between described outer wall 11 and inwall 12.
See accompanying drawing 2, for the ease of a cable is fixed, in a described cable mistake
Being fixed with three cable fixing clamp/clip parts 8 on the sidewall in hole 2, three cable fixing clamp/clip parts 8 are uniform
It is distributed on described inwall 12.
In the present embodiment, described measure winding 4 is consistent with the winding structure of protective winding 5, its
Described in measure winding 4 include a circular iron core 41, as shown in Figure 3 and Figure 4,
It is covered with the first insulating barrier 42 on this iron core 41, this first insulating barrier 42 is wound with two
Secondary coil 43, is also covered with the second insulating barrier 44, described secondary on described secondary coil 43
Coil 43 is connected with described first connector assembly 6 by secondary lead-out wire 45.
In the present embodiment, the most described first insulating barrier 42 is consistent with the second insulating barrier 44 structure,
And constituted by crimped paper and PVC tape.
In this example, the parameter of described measure winding 4 is 500/5A, 5VA 0.2S level；Institute
The parameter stating protective winding 5 is 500/5A, 5VA 10P10 level.
This transformer, by being wholely set with protective winding 5 by measure winding 4, is realizing tradition
While the function of transformer measurement, when faults such as system are short-circuited, or cable
In when flowing through the biggest abnormal electric current, the protective winding 5 of transformer is provided that a signal
To relay or protection switch, relay or switch receive signal and shut off power supply, right
Whole system plays a protective role.
Claims (6)
1. a straight-through current transformer, it is characterised in that: include protective case (1), at this
The center of protective case (1) offers a cable via (2), built-in at described protective case (1)
Being provided with pour mass (3), described pour mass is respectively arranged with measure winding in (3) from down to up
(4) with protective winding (5), described measure winding (4) is used for being connected with measuring equipment,
Described protective winding (5) is for being connected, in described cast with external relay or protection switch
The top of body (3) is respectively arranged with the first connector assembly (6) and the second connector assembly (7),
Described first connector assembly (6) is electrically connected with measure winding (4), described second wiring group
Part (7) is electrically connected with protective winding (5).
A kind of straight-through current transformer the most according to claim 1, it is characterised in that:
Described measure winding (4) is consistent with the winding structure of protective winding (5), wherein said metering
Winding (4) includes a circular iron core (41), is covered with on this iron core (41)
One insulating barrier (42), is wound with secondary coil (43) on this first insulating barrier (42),
Described secondary coil (43) is also covered with the second insulating barrier (44).
A kind of straight-through current transformer the most according to claim 2, it is characterised in that:
Described first insulating barrier (42) is consistent with the second insulating barrier (44) structure, and by crimped paper
Constitute with PVC tape.
A kind of straight-through current transformer the most according to claim 1, it is characterised in that:
The sidewall of a described cable via (2) is fixed with at least one cable fixing clamp/clip part (8).
A kind of straight-through current transformer the most according to claim 1, it is characterised in that:
Described protective case (1) is by cylindrical outer wall (11) that is highly consistent and that be arranged concentrically and cylindrical inner wall
(12) constitute, described pour mass (3) be positioned at described outer wall (11) and inwall (12) it
Between.
A kind of straight-through current transformer the most according to claim 1 and 2, its feature
It is: the parameter of described measure winding (4) is 500/5A, 5VA 0.2S level；Described
The parameter of protective winding (5) is 500/5A, 5VA 10P10 level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620051443.8U CN205542366U (en) | 2016-01-19 | 2016-01-19 | Punching current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620051443.8U CN205542366U (en) | 2016-01-19 | 2016-01-19 | Punching current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205542366U true CN205542366U (en) | 2016-08-31 |
Family
ID=56765501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620051443.8U Expired - Fee Related CN205542366U (en) | 2016-01-19 | 2016-01-19 | Punching current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205542366U (en) |
-
2016
- 2016-01-19 CN CN201620051443.8U patent/CN205542366U/en not_active Expired - Fee Related
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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: 20160831 Termination date: 20180119 |