CN211453812U - Circuit for simultaneously testing multiple transformers - Google Patents
Circuit for simultaneously testing multiple transformers Download PDFInfo
- Publication number
- CN211453812U CN211453812U CN201922177809.2U CN201922177809U CN211453812U CN 211453812 U CN211453812 U CN 211453812U CN 201922177809 U CN201922177809 U CN 201922177809U CN 211453812 U CN211453812 U CN 211453812U
- Authority
- CN
- China
- Prior art keywords
- circuit
- control switch
- electrically connected
- transformers
- fuse
- 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.)
- Active
Links
Images
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model relates to the technical field of transformer test circuits, in particular to a circuit for simultaneously testing a plurality of transformers; the fuse box comprises an input control switch, an output control switch, a fuse box and a fuse tube arranged in the fuse box; one end of the input control switch is electrically connected with a live wire of an external power supply; the other end of the input control switch is electrically connected with the input end of the transformer; one end of the output control switch is electrically connected with a zero line of an external power supply; the other end of the output control switch is electrically connected with the output end of the transformer through the fuse box; the fuse tube is detachably arranged in the fuse box. The utility model discloses when examining the defective products effectively, break off one of them or a plurality of transformer alone, and need not break off total supply circuit, make other transformers can normally carry out aging testing.
Description
Technical Field
The utility model relates to a transformer test circuit technical field, concretely relates to supply circuit of a plurality of transformers simultaneous testing.
Background
The traditional transformer aging test can simultaneously carry out aging test on a plurality of transformers, when one transformer has an aging fault, a main power supply circuit is usually required to be disconnected so as to find out which transformer has a problem, but because the aging test needs to continuously test for a certain time, after the aging test is interrupted, the test efficiency is low.
Disclosure of Invention
An object of the utility model is to overcome above shortcoming, provide a circuit that supplies a plurality of transformers to test simultaneously, when examining the defective products effectively, break off one or more of them transformer alone, and need not break off total supply circuit, make other transformers can normally carry out aging testing.
In order to achieve the above purpose, the specific scheme of the utility model is as follows: a circuit for simultaneously testing a plurality of transformers comprises an input control switch, an output control switch, a fuse box and a fuse tube arranged in the fuse box; one end of the input control switch is electrically connected with a live wire of an external power supply; the other end of the input control switch is electrically connected with the input end of the transformer; one end of the output control switch is electrically connected with a zero line of an external power supply through the fuse box; the other end of the output control switch is electrically connected with the output end of the transformer; the fuse tube is detachably arranged in the fuse box.
The utility model is further arranged that the circuit for testing a plurality of transformers simultaneously also comprises LED lamps; one end of the LED lamp is connected with the other end of the input control switch; the other end of the LED lamp is connected with the other end of the output control switch.
The utility model discloses further set up to, the one end of LED lamp is connected with input control switch's the other end through a choked flow resistance.
The utility model discloses further set up as, the protective tube is the recoverable protective tube.
The utility model is further arranged in that the protective tube comprises a tube body, a movable contact piece, a heat-sensitive spring, a holding cavity arranged in the tube body, two static contact pieces and two connecting blocks; the two connecting blocks are respectively and electrically connected with the other end of the output control switch and the output end of the transformer; the two static contacts are arranged on the top of the inner wall of the accommodating cavity; the movable contact spring is connected with the bottom of the accommodating cavity through the thermosensitive spring; two ends of the movable contact piece are respectively movably connected with the two static contact pieces; the two connecting blocks are respectively penetrated through the pipe body and then are electrically connected with the two static contacts in the accommodating cavity.
The utility model discloses further set up to, two connecting blocks with the junction of body all is equipped with waterproof insulation block.
The utility model is further provided with that the fuse box comprises a lower shell, an upper shell which is detachably connected with the lower shell and an installation part for installing the fuse tube; the mounting component comprises a clamping groove and two pins electrically connected with the clamping groove; the two ends of the protective tube are detachably connected with the clamping grooves; the pins are arranged on the lower shell in a penetrating manner; the two pins are respectively and electrically connected with one end of the output control switch and the output end of the transformer.
The utility model is further arranged that the outer wall of the lower shell is provided with a lug; the inner wall of epitheca be equipped with be used for with the recess of lug joint.
The utility model has the advantages that: when the defective products are effectively detected, one or more transformers are independently disconnected without disconnecting the main power supply circuit, so that other transformers can normally perform aging tests.
Drawings
The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the inner structure of the fuse of the present invention;
fig. 3 is a schematic structural view of the upper shell and the lower shell of the present invention before assembly.
Wherein: 11-input control switch; 12-an output control switch; 13-a fuse box; 14-a protective tube; 15-LED lamps; 16-current blocking resistance; 21-a pipe body; 22-moving contact piece; 23-a heat-sensitive spring; 24-a housing cavity; 25-static contact piece; 26-connecting blocks; 27-waterproof insulation block; 31-inferior shell; 32-upper shell; 33-a clamping groove; 34-pin; 35-a bump; 36-groove.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
As shown in fig. 1 to 3, the circuit for simultaneously testing a plurality of transformers according to the present embodiment includes an input control switch 11, an output control switch 12, a fuse box 13, and a fuse 14 disposed in the fuse box 13; one end of the input control switch 11 is electrically connected with a live wire of an external power supply; the other end of the input control switch 11 is electrically connected with the input end of the transformer; one end of the output control switch 12 is electrically connected with a zero line of an external power supply; the other end of the output control switch 12 is electrically connected with the output end of the transformer through the fuse box 13; the fuse tube 14 is detachably mounted in the fuse box 13.
When in use, each transformer is independently connected between the live wire and the zero wire through the utility model; during normal aging test, the input control switch 11 and the output control switch 12 are both closed, the fuse tube 14 in the fuse box 13 is in a conducting state, and each transformer is tested; when one or more transformers are abnormal, the corresponding protective tube 14 is disconnected, and the branch is disconnected, so that the normal aging test work of other transformers cannot be influenced; for the branch where the abnormal transformer is located, the input control switch 11 and the output control switch 12 can be disconnected, then the fuse tube 14 is restored or replaced again, and a new transformer to be subjected to the aging test is connected again. In addition, the input control switch 11 and the output control switch 12 may be integrated as a double pole switch.
As shown in fig. 1 to 3, the circuit for simultaneously testing a plurality of transformers according to the present embodiment further includes an LED lamp 15; one end of the LED lamp 15 is connected with the other end of the input control switch 11; the other end of the LED lamp 15 is connected with the other end of the output control switch 12.
Specifically, when the transformer is subjected to a normal aging test, the LED lamp 15 is lit; when the transformer is abnormal and the fuse tube 14 is disconnected, the LED lamp 15 corresponding to the transformer is turned off to remind a worker to check the problem.
As shown in fig. 1 to 3, in the circuit for simultaneously testing a plurality of transformers according to the present embodiment, one end of the LED lamp 15 is connected to the other end of the input control switch 11 through a blocking resistor 16.
The blocking resistor 16 is used to prevent the current flowing through the LED from being too large, which may cause the LED lamp 15 to burn out.
As shown in fig. 1 to 3, in the circuit for simultaneously testing a plurality of transformers according to the embodiment, the fuse 14 is a recoverable fuse 14.
As shown in fig. 1-3, in the circuit for simultaneously testing a plurality of transformers according to the present embodiment, the fuse 14 includes a tube body 21, a movable contact 22, a thermal spring 23, a receiving cavity 24 disposed in the tube body 21, two static contacts 25, and two connecting blocks 26; the two connecting blocks 26 are respectively and electrically connected with the other end of the output control switch 12 and the output end of the transformer; the two static contacts 25 are arranged on the top of the inner wall of the accommodating cavity 24; the movable contact piece 22 is connected with the bottom of the accommodating cavity 24 through the heat-sensitive spring 23; two ends of the movable contact piece 22 are respectively movably connected with the two static contact pieces 25; the two connecting blocks 26 respectively penetrate through the tube body 21 and are electrically connected with the two static contacts 25 in the accommodating cavity 24.
Specifically, the thermal sensitive spring 23 is in a contracted state during normal operation, the movable contact 22 is under the pulling force of the spring, and two ends of the movable contact 22 are respectively connected with the two static contacts 25, so that the circuit is conducted; when the transformer works abnormally, the current in the circuit is overlarge and generates heat, when the temperature reaches a certain value, the heat-sensitive spring 23 extends, the movable contact piece 22 is supported by the heat-sensitive spring 23, the circuit is disconnected, the LED lamp 15 is turned off, and a worker is reminded to check after the input control switch 11 and the output control switch 12 are disconnected; at this time, after the circuit current returns to the normal state, the heat-sensitive spring 23 automatically cools and contracts, and the fuse tube 14 can normally work.
As shown in fig. 1 to 3, in the circuit for simultaneously testing a plurality of transformers according to this embodiment, the joints between the two connection blocks 26 and the pipe body 21 are provided with waterproof insulation blocks 27.
The waterproof insulating block 27 is used for protecting parts in the pipe body 21 and preventing water vapor from entering to cause abnormal work.
As shown in fig. 1 to 3, in the circuit for simultaneously testing a plurality of transformers according to the present embodiment, the fuse box 13 includes a lower shell 31, an upper shell 32 detachably connected to the lower shell 31, and a mounting member for mounting the fuse tube 14; the mounting component comprises a clamping groove 33 and two pins 34 electrically connected with the clamping groove 33; the two ends of the protective tube 14 are detachably connected with the clamping grooves 33; the pins 34 are arranged on the lower shell 31 in a penetrating manner; two pins 34 are electrically connected to one end of the output control switch 12 and the output terminal of the transformer, respectively.
By arranging the detachable lower shell 31 and the detachable upper shell 32, the fuse tube 14 can be conveniently replaced; when the fuse tube is replaced, only the damaged fuse tube 14 needs to be pulled out of the clamping groove 33, and then the two ends of the new fuse tube 14 are inserted into the clamping groove 33.
As shown in fig. 1-3, in the circuit for simultaneously testing a plurality of transformers according to the present embodiment, a protrusion 35 is disposed on an outer wall of the lower case 31; the inner wall of the upper shell 32 is provided with a groove 36 for clamping with the projection 35.
Through setting up lug 35 and recess 36, simple structure can dismantle fast and assemble.
The above is only a preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the protection scope of the present invention.
Claims (8)
1. A circuit for simultaneously testing a plurality of transformers, comprising:
comprises an input control switch (11), an output control switch (12), a fuse box (13) and a fuse tube (14) arranged in the fuse box (13);
one end of the input control switch (11) is electrically connected with a live wire of an external power supply; the other end of the input control switch (11) is electrically connected with the input end of the transformer;
one end of the output control switch (12) is electrically connected with a zero line of an external power supply; the other end of the output control switch (12) is electrically connected with the output end of the transformer through the fuse box (13);
the fuse tube (14) is detachably arranged in the fuse box (13).
2. The circuit of claim 1, wherein the circuit is configured to test a plurality of transformers simultaneously, and wherein: the circuit for simultaneously testing a plurality of transformers further comprises an LED lamp (15); one end of the LED lamp (15) is connected with the other end of the input control switch (11); the other end of the LED lamp (15) is connected with the other end of the output control switch (12).
3. A circuit for simultaneous testing of multiple transformers according to claim 2, wherein: one end of the LED lamp (15) is connected with the other end of the input control switch (11) through a choke resistor (16).
4. The circuit of claim 1, wherein the circuit is configured to test a plurality of transformers simultaneously, and wherein: the fuse tube (14) is a recoverable fuse tube (14).
5. The circuit of claim 4, wherein the circuit is configured to test a plurality of transformers simultaneously, and wherein: the protective tube (14) comprises a tube body (21), a movable contact piece (22), a thermosensitive spring (23), an accommodating cavity (24) arranged in the tube body (21), two static contact pieces (25) and two connecting blocks (26); the two connecting blocks (26) are respectively and electrically connected with the other end of the output control switch (12) and the output end of the transformer;
the two static contacts (25) are arranged on the top of the inner wall of the accommodating cavity (24); the movable contact piece (22) is connected with the bottom of the accommodating cavity (24) through the heat-sensitive spring (23); two ends of the movable contact piece (22) are respectively movably connected with the two static contact pieces (25);
the two connecting blocks (26) respectively penetrate through the pipe body (21) and then are electrically connected with the two static contacts (25) in the accommodating cavity (24).
6. The circuit of claim 5, wherein the circuit is configured to test a plurality of transformers simultaneously, and wherein: the joints of the two connecting blocks (26) and the pipe body (21) are provided with waterproof insulating blocks (27).
7. The circuit of claim 1, wherein the circuit is configured to test a plurality of transformers simultaneously, and wherein: the fuse box (13) comprises a lower shell (31), an upper shell (32) detachably connected with the lower shell (31) and a mounting part for mounting the fuse tube (14);
the mounting component comprises a clamping groove (33) and two pins (34) electrically connected with the clamping groove (33); the two ends of the protective tube (14) are detachably connected with the clamping grooves (33); the pins (34) are arranged on the lower shell (31) in a penetrating manner; the two pins (34) are respectively and electrically connected with one end of the output control switch (12) and the output end of the transformer.
8. The circuit of claim 7, wherein the circuit is configured to test a plurality of transformers simultaneously: the outer wall of the lower shell (31) is provided with a convex block (35); the inner wall of the upper shell (32) is provided with a groove (36) which is used for being clamped with the convex block (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922177809.2U CN211453812U (en) | 2019-12-06 | 2019-12-06 | Circuit for simultaneously testing multiple transformers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922177809.2U CN211453812U (en) | 2019-12-06 | 2019-12-06 | Circuit for simultaneously testing multiple transformers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211453812U true CN211453812U (en) | 2020-09-08 |
Family
ID=72300648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922177809.2U Active CN211453812U (en) | 2019-12-06 | 2019-12-06 | Circuit for simultaneously testing multiple transformers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211453812U (en) |
-
2019
- 2019-12-06 CN CN201922177809.2U patent/CN211453812U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3028541B1 (en) | Led replacement lamp for safe operation with electro-magnetic ballast | |
| KR102413545B1 (en) | Flame circuit protection systems, modules and methods | |
| US6204747B1 (en) | Safety devices for electrical circuits and systems | |
| US20110270458A1 (en) | Electrical socket apparatus with over-current protection | |
| US20070258175A1 (en) | Method and apparatus for open neutral fault detection | |
| CN211453812U (en) | Circuit for simultaneously testing multiple transformers | |
| CN206831847U (en) | Electric heater and its heating control apparatus | |
| CN109936124A (en) | A kind of Security Unit | |
| CN203748082U (en) | LED fluorescent lamp safety device | |
| CN105591354B (en) | A kind of protection circuit and communication equipment | |
| CN104426120A (en) | Overcurrent and overvoltage protection circuit and lamp | |
| CN108981181B (en) | Electric water heater and heating control device and method thereof | |
| CN204720975U (en) | A kind of heating wire operator guards stage by stage | |
| US6686744B1 (en) | Adapter for use in measuring electrical current drawn across a fuse in a circuit | |
| CN204241603U (en) | Electric auxiliary heat protection piece detection device for air conditioner | |
| CN209046069U (en) | A kind of construction site multifunctional distribution box | |
| US20030107851A1 (en) | Mobile high voltage network | |
| CN208209163U (en) | A kind of false-touch prevention socket of overcurrent protection | |
| CN101286632B (en) | Device to send out alarming indication when abnormal voltage appearing in grounding system | |
| CN212542906U (en) | Power distribution socket | |
| CN201044351Y (en) | Device capable of alarming when abnormal voltage happens in grounding system | |
| CN104917000A (en) | Electric leakage protection socket | |
| CN207410025U (en) | A kind of current protecting circuit of high voltage | |
| CN210982693U (en) | Lamp interface conduction condition test fixture | |
| KR200272287Y1 (en) | Breaker checking power with lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |