CN203101447U - Protecting device for alternating-current mains supply testing system - Google Patents
Protecting device for alternating-current mains supply testing system Download PDFInfo
- Publication number
- CN203101447U CN203101447U CN 201220712970 CN201220712970U CN203101447U CN 203101447 U CN203101447 U CN 203101447U CN 201220712970 CN201220712970 CN 201220712970 CN 201220712970 U CN201220712970 U CN 201220712970U CN 203101447 U CN203101447 U CN 203101447U
- Authority
- CN
- China
- Prior art keywords
- voltage regulator
- protective device
- automatic coupling
- protecting device
- coupling voltage
- 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 - Lifetime
Links
Images
Abstract
The utility model discloses a protecting device for an alternating-current mains supply testing system. The protecting device comprises an isolation transformer, an automatic coupling voltage regulator, an electric parameter tester and a tested circuit system which are serially connected to an alternating-current mains supply in sequence, and is characterized in that a protecting device capable of being rapidly connected and disconnected is further arranged in a live wire or a zero wire connected between the automatic coupling voltage regulator and the electric parameter tester; and the protecting device is used for realizing rapid and effective connection and disconnection by being cooperated with a switch, preventing a load from generating a large current to burn out a fuse, and even burn out the electric parameter tester and the automatic coupling voltage regulator due to short-circuit, and acting personal protection on testing personnel, and research and development engineering personnel.
Description
Technical field
The utility model relates to a kind of protective device that is used for the electric main test macro.
Background technology
In recent years, off-line type AC/DC(ac/dc) power supply adaptor, charger, LED driving power have obtained pure development.
For a lot of slip-stick artists design with the testing power supply process in, for the quality of the testing power supply especially short circuit problem of input ac voltage, how effectively to protect and worried.
Fig. 1 is a kind of existing general electric main input test system; Electric main input test system comprises isolating transformer, and automatic coupling voltage regulator and electric parameter tester are formed.Isolating transformer is isolated utility grid voltage and test voltage; Autotransformer is regulated the test voltage size, obtains required test voltage; Electric parameter tester test input electrical quantity information comprises the input test magnitude of voltage, input current value, power input value, power factor and harmonic component etc.Line voltage is being given the power supply of circuit-under-test plate through the parameter instrument after isolating pressure regulation; If the input short circuit takes place the circuit-under-test plate, form big electric current and burn out tested circuit board and electric parameter tester is damaged.More serious automatic coupling voltage regulator is burnt out.
The utility model content
The utility model purpose is to provide a kind of protective device that is used for the electric main test macro at the defective that prior art exists; it is under the circuit-under-test plate is short-circuited situation; can protect fast and effectively, guarantee the safety of electric parameters testing instrument and automatic coupling voltage regulator.
The utility model for achieving the above object; adopt following technical scheme: a kind of protective device that is used for the electric main test macro; comprise the isolating transformer, automatic coupling voltage regulator, electric parameter tester and the circuit-under-test system that are serially connected with electric main successively, also be provided with the protective device that can insert fast and disconnect in live wire that connects between described automatic coupling voltage regulator and the electric parameter tester or the zero line.
Further, described protective device is the incandescent lamp and first switch together connected with each other.
Further, also be provided with one in the described circuit-under-test system and form the second switch of a cascaded switch with described first switch.
The beneficial effects of the utility model: this protective device, seal in the testing tool circuit, effect is fast and effectively played in the protection of testing tool in the test macro, and played indicative function.Preventing that load is short-circuited produces big electric current and burns out fuse, even prevents to burn out electrical quantity instrument and automatic coupling voltage regulator.Personal protection is played in test and research and development engineering staff.
Description of drawings
Fig. 1 tradition input test system;
Fig. 2 first embodiment topology theory figure of the present utility model;
Fig. 3 second embodiment topology theory figure of the present utility model.
Embodiment
The utility model is a kind of protective device that is used for the electric main test macro; comprise the isolating transformer 1, automatic coupling voltage regulator 2, electric parameter tester 4 and the circuit-under-test system 5 that are serially connected with electric main successively, also be provided with the protective device 3 that can insert fast and disconnect in live wire that connects between described automatic coupling voltage regulator 2 and the electric parameter tester 4 or the zero line.
In the proper testing process, line voltage carries out exporting to autotransformer 2 after 1:1 isolates through isolating transformer, and autotransformer 2 is regulated, and obtains required test voltage size; The input voltage size is simultaneously displayed on the electrical quantity instrument 4, and the centre seals in incandescent lamp, and this moment, incandescent lamp was pure resistive, and resistance is very for a short time is equivalent to a lead and is connected between automatic coupling voltage regulator 2 and the tested circuit board.To the not influence of tested circuit.
Be short-circuited in circuit-under-test input, the protective device that string incandescent lamp is therein done just equals to be connected on line voltage by in the ac commercial power voltage behind the isolating transformer, and live wire or zero line are added in the two ends of incandescent lamp, and incandescent lamp adds high pressure and conducting is luminous.Play protection electrical quantity instrument and automatic coupling voltage regulator simultaneously.And play the bright warning indication of lamp.
Fig. 2 is the utility model circuit first embodiment topology theory figure.Comprise isolating transformer 1, automatic coupling voltage regulator 2, protective device 3 and electric parameter tester 4 are formed.Isolating transformer 2 is isolated utility grid voltage and test voltage; Autotransformer 2 is regulated the test voltage size, obtains required test voltage; Electric parameter tester 4 test input electrical quantity information comprise the input test magnitude of voltage, input current value, power input value, power factor and harmonic component etc.; Protective device 3 is installed between automatic coupling voltage regulator 2 and the electric parameter tester 4.A switch of parallel connection in the protective device 2 can insert protective device and disconnect in test macro easily.After inserting protective device, under the situation that tested circuit is short-circuited in test process, effect is fast and effectively played in the protection of testing tool in the test macro, and played indicative function.Preventing that load is short-circuited produces big electric current and burns out fuse, prevents to burn out electrical quantity instrument and automatic coupling voltage regulator.Personal protection is played in test and research and development engineering staff.
Shown in Figure 3, another embodiment topology theory figure of the present utility model comprises isolating transformer 1, automatic coupling voltage regulator 2, and protective device 3 and electric parameter tester 4 are formed.Isolating transformer 2 is isolated utility grid voltage and test voltage; Autotransformer 2 is regulated the test voltage size, obtains required test voltage; Electric parameter tester 4 test input electrical quantity information comprise the input test magnitude of voltage, input current value, power input value, power factor and harmonic component etc.; Protective device 3 is installed between automatic coupling voltage regulator and the electric parameter tester.Simultaneously the K switch 1 in parallel and K switch 2 that tested circuit is provided with formed a cascaded switch in protective device is installed in protective device and cascaded switch in the effective magazine.Effect is fast and effectively played in the protection of testing tool in the test macro, and played indicative function.Preventing that load is short-circuited produces big electric current and burns out fuse, prevents to burn out electrical quantity instrument and automatic coupling voltage regulator.Personal protection is played in test and research and development engineering staff.
The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (3)
1. protective device that is used for the electric main test macro; comprise the isolating transformer, automatic coupling voltage regulator, electric parameter tester and the circuit-under-test system that are serially connected with electric main successively; it is characterized in that, also be provided with the protective device that can insert fast and disconnect in live wire that connects between described automatic coupling voltage regulator and the electric parameter tester or the zero line.
2. a kind of protective device that is used for the electric main test macro as claimed in claim 1 is characterized in that, described protective device is the incandescent lamp and first switch together connected with each other.
3. a kind of protective device that is used for the electric main test macro as claimed in claim 2 is characterized in that, also is provided with one in the described circuit-under-test system and forms the second switch of a cascaded switch with described first switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220712970 CN203101447U (en) | 2012-12-21 | 2012-12-21 | Protecting device for alternating-current mains supply testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220712970 CN203101447U (en) | 2012-12-21 | 2012-12-21 | Protecting device for alternating-current mains supply testing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203101447U true CN203101447U (en) | 2013-07-31 |
Family
ID=48852837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220712970 Expired - Lifetime CN203101447U (en) | 2012-12-21 | 2012-12-21 | Protecting device for alternating-current mains supply testing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203101447U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033654A (en) * | 2012-12-21 | 2013-04-10 | 无锡友达电子有限公司 | Protection device used for alternating current test system |
-
2012
- 2012-12-21 CN CN 201220712970 patent/CN203101447U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033654A (en) * | 2012-12-21 | 2013-04-10 | 无锡友达电子有限公司 | Protection device used for alternating current test system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102780234B (en) | High-voltage electric debugging method for power generation project | |
| CN103604998A (en) | Method for measuring electric conduction loop resistance of circuit breaker | |
| CN203981788U (en) | A kind of photovoltaic combining inverter automatic detection device | |
| CN108318766A (en) | Operation vehicle for contact wire's AC power distribution cabinet/AC distribution panel device for fast detecting | |
| CN104898049B (en) | A kind of electro-magnetic circuit breaker debugs detection device system | |
| CN207946485U (en) | Operation vehicle for contact wire's AC power distribution cabinet/AC distribution panel device for fast detecting | |
| CN203101447U (en) | Protecting device for alternating-current mains supply testing system | |
| CN205210232U (en) | Low pressure intelligence fault detector | |
| CN204679581U (en) | A kind of portable type current transformer polarity test device | |
| CN204696702U (en) | Grid-connected distribution box | |
| CN204479696U (en) | A kind of for relay protection secondary circuit whole group of polarity test device | |
| CN209432939U (en) | A kind of high-power transformer second protection polarity test device | |
| CN1987491A (en) | Electric power monitor for single phase AC electric device inspection and repair | |
| CN104865494A (en) | Portable current transformer polarity testing device and use method thereof | |
| CN205620457U (en) | PT secondary voltage signal isolation sampling device based on isolation transformer | |
| CN202548290U (en) | Vacuum circuit breaker synchronous detector | |
| CN103454536A (en) | Power transformer test method | |
| CN208999503U (en) | A kind of wind power pitch-controlled system backup power supply management module automatic testing equipment | |
| CN204287350U (en) | Protective relaying device tripping operation outlet proving installation | |
| CN207882372U (en) | Comprehensive protector of motor tester | |
| CN203981715U (en) | A kind of Test Switchboard mechanical property switching device used | |
| CN103033654A (en) | Protection device used for alternating current test system | |
| CN203519676U (en) | Detection device for electronic components in middle-and-low-voltage equipment | |
| CN208752192U (en) | The test device of power locomotive top insulation detection device | |
| CN203251092U (en) | Multifunctional transition source box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |
|
| CX01 | Expiry of patent term |