CN206211513U - A kind of current transformer second open circuit protector - Google Patents
A kind of current transformer second open circuit protector Download PDFInfo
- Publication number
- CN206211513U CN206211513U CN201621083879.1U CN201621083879U CN206211513U CN 206211513 U CN206211513 U CN 206211513U CN 201621083879 U CN201621083879 U CN 201621083879U CN 206211513 U CN206211513 U CN 206211513U
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- electrode plate
- current transformer
- daughter board
- secondary winding
- open circuit
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Abstract
The utility model is related to current transformer field, specifically a kind of current transformer second open circuit protector, including electrode plate assembly, locking lock-nut and adjusting washer (disk), wherein electrode plate assembly includes first electrode plate and second electrode plate, the first electrode plate is packed on the secondary terminals daughter board of current transformer, the second electrode plate is separately fixed at each Secondary Winding end terminals root being arranged on the secondary terminals daughter board, and the locking lock-nut is provided between the second electrode plate and the head nut of Secondary Winding end terminals, the adjusting washer (disk) is provided between the second electrode plate and the secondary terminals daughter board, space is left between the first electrode plate and second electrode plate, and the first electrode plate is connected with ground lead.The utility model is assembled on the secondary connection plate of current transformer, has both solved the Over-voltage Protection of secondary winding in current transformer, also saves big quantity space.
Description
Technical field
The utility model is related to current transformer field, and specifically a kind of current transformer is protected with second open circuit and filled
Put.
Background technology
Current transformer is widely used in power transmission and transformation field, is mainly used as to measure and protects, operating current transformer
Secondary Winding forbids open circuit, once open circuit can produce high high voltage to jeopardize personal safety, this high voltage can also be damaged in addition
Bad Secondary Winding insulate, and so as to cause major insulation to deteriorate, finally results in product major insulation failure and triggers the safety such as equipment explosion
Accident.
As shown in figure 4, the second open circuit safeguard measure of conventional current transformer body is in current transformer connection box
Secondary terminals on, each Secondary Winding parallel connection one independent accessory (such as discharge tube), used between secondary terminals and accessory
Wire is connected, but when Secondary Winding quantity is more, secondary terminal box just needs very big space to place the accessory, and this is significantly
Increased equipment volume.
Utility model content
The purpose of this utility model is to provide a kind of current transformer second open circuit protector, using battery lead plate it
Between small―gap suture electric discharge realize the overvoltage protection of secondary winding in current transformer, both solve secondary winding in current transformer
Over-voltage Protection, also saves big quantity space, makes the structure of current transformer compacter.
The purpose of this utility model is achieved through the following technical solutions：
A kind of current transformer second open circuit protector, including electrode plate assembly, locking lock-nut and spacer
Circle, wherein electrode plate assembly include first electrode plate and second electrode plate, and the first electrode plate is packed in current transformer
On secondary terminals daughter board, the second electrode plate is separately fixed at each Secondary Winding end being arranged on the secondary terminals daughter board
Terminal root, and the locking locking is provided between the second electrode plate and the head nut of Secondary Winding end terminals
Nut, is provided with the adjusting washer (disk), the first electrode plate and between the second electrode plate and the secondary terminals daughter board
Space is left between two battery lead plates, and the first electrode plate is connected with ground lead.
Along X to being packed on secondary terminals daughter board, second electrode plate is fixed on each to the first electrode plate respectively along Y-direction
Secondary Winding end terminals root.
Space between the first electrode plate and second electrode plate is 0.8~1.2mm.
The ground lead is connected with the base of current transformer.
Advantage of the present utility model is with good effect：
1st, the utility model realizes the overvoltage protection of secondary winding in current transformer using the small―gap suture between battery lead plate,
The small―gap suture is arranged on secondary connection plate, has both solved the Over-voltage Protection of secondary winding in current transformer, is also saved
Big quantity space is saved.
2nd, the utility model can make the Secondary Winding will not produce high voltage, the protection person and equipment safety.
Brief description of the drawings
Fig. 1 is schematic view of the mounting position of the present utility model,
Fig. 2 is schematic view of the mounting position of the present utility model two,
Fig. 3 is enlarged diagram at the I in Fig. 2,
Fig. 4 is Current Transformer Secondary open-circuit-protection schematic diagram of the prior art,
Fig. 5 is Current Transformer Secondary open-circuit-protection schematic diagram of the present utility model.
Wherein, 1 is secondary terminal box, and 2 is Secondary Winding end terminals, and 3 is secondary terminals daughter board, and 4 is secondary terminals, and 5 are
Secondary coil lead-out wire, 6 is ground lead, and 7 is first electrode plate, and 8 is second electrode plate, and 9 is locking lock-nut, and 10 is tune
Section packing ring, 11 is discharge tube, and 12 is electrode plate assembly.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Fig. 1~2, secondary terminals daughter board 3 is provided with the secondary terminal box 1 of current transformer, secondary terminals 4 are pacified
On the secondary terminals daughter board 3, the secondary coil lead-out wire 5 of current transformer draw after with secondary terminals daughter board 3 on it is secondary
Terminal 4 is connected, above-mentioned to be techniques well known, the utility model be assembled on the secondary terminals daughter board 3 and with it is secondary around
Group end terminal 2 is connected.
As shown in Figures 1 to 3, the utility model includes electrode plate assembly 12, locking lock-nut 9 and adjusting washer (disk) 10, its
Middle electrode plate assembly 12 includes first electrode plate 7 and second electrode plate 8, as shown in figure 1, the first electrode plate 7 is rectangle
Pole plate and along X to being packed on secondary terminals daughter board 3, second electrode plate 8 is fixed on each Secondary Winding end end respectively along Y-direction
Sub 2 roots, as shown in figure 3, being provided between the head nut of the second electrode plate 8 and the Secondary Winding end terminals 2
The locking lock-nut 9, is provided with the adjusting washer (disk) 10 between the second electrode plate 8 and secondary terminals daughter board 3, described anti-
Loose lock-nut 9 and adjusting washer (disk) 10 are sheathed on the terminal threaded rod root of Secondary Winding end terminals 2, as shown in Fig. 2 institute
State first electrode plate 7 to be fixed on secondary terminals daughter board 3 and be connected with the base of current transformer by ground lead 6, electric current is mutual
When sensor runs the base be connect, the utility model adjusts the by the adjusting washer (disk) 10 and locking lock-nut 9
Gap and fixation between two battery lead plates 8 and first electrode plate 7, reach the gap between second electrode plate 8 and first electrode plate 7
To 0.8~1.2mm of arcing distance requirement.
Operation rule requirement according to current transformer, one end of Secondary Winding must be grounded (Secondary Winding during operation
Initial terminal), the gap between first electrode plate 7 and second electrode plate 8 in such the utility model be just connected in parallel on it is secondary around
Between the lead-out wire of group, when normal operation, the voltage very little between secondary circuit will not be in the electricity of first electrode plate 7 and second
Gap discharge between pole plate 8, and work as secondary circuit and occur open circuit situation for some reason, will be produced inside Secondary Winding
High voltage, at this moment two battery lead plates are short by gap discharge, so that protecting the insulation of Secondary Winding will not be subject to high-tension damage
Evil.
Operation principle of the present utility model is：
As shown in figure 4, the common second open circuit safeguard measure of current transformer body is to make each Secondary Winding parallel connection one
Individual discharge tube 11, secondary terminal box needs very big space.As shown in figure 5, the utility model then electrode plate assembly in parallel
12, using the gap between the first electrode plate 7 and second electrode plate 8 in electrode plate assembly 12 realize Current Transformer Secondary around
The overvoltage protection of group, had both solved the Over-voltage Protection of secondary winding in current transformer, also saved big quantity space, made
The structure of current transformer is compacter.
Claims (4)
1. a kind of current transformer second open circuit protector, it is characterised in that：Including electrode plate assembly (12), locking locking
Nut (9) and adjusting washer (disk) (10), wherein electrode plate assembly (12) include first electrode plate (7) and second electrode plate (8), described
First electrode plate (7) is packed on the secondary terminals daughter board (3) of current transformer, and the second electrode plate (8) is separately fixed at and sets
Each Secondary Winding end terminals (2) root being placed on the secondary terminals daughter board (3), and in the second electrode plate (8)
The locking lock-nut (9) is provided with and the head nut of Secondary Winding end terminals (2) between, in the second electrode plate
(8) adjusting washer (disk) (10), the first electrode plate (7) and second electrode plate are provided between the secondary terminals daughter board (3)
(8) space is left between, and the first electrode plate (7) is connected with ground lead (6).
2. current transformer second open circuit protector according to claim 1, it is characterised in that：The first electrode
Along X to being packed on secondary terminals daughter board (3), second electrode plate (8) is fixed on each Secondary Winding end to plate (7) respectively along Y-direction
End terminal (2) root.
3. current transformer second open circuit protector according to claim 1 and 2, it is characterised in that：Described first
Space between battery lead plate (7) and second electrode plate (8) is 0.8~1.2mm.
4. current transformer second open circuit protector according to claim 1, it is characterised in that：The ground lead
(6) it is connected with the base of current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621083879.1U CN206211513U (en) | 2016-09-27 | 2016-09-27 | A kind of current transformer second open circuit protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621083879.1U CN206211513U (en) | 2016-09-27 | 2016-09-27 | A kind of current transformer second open circuit protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206211513U true CN206211513U (en) | 2017-05-31 |
Family
ID=58761513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621083879.1U Active CN206211513U (en) | 2016-09-27 | 2016-09-27 | A kind of current transformer second open circuit protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206211513U (en) |
-
2016
- 2016-09-27 CN CN201621083879.1U patent/CN206211513U/en active Active
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