CN209327462U - A kind of circuit of test sample short circuit current current limliting time - Google Patents
A kind of circuit of test sample short circuit current current limliting time Download PDFInfo
- Publication number
- CN209327462U CN209327462U CN201821928252.0U CN201821928252U CN209327462U CN 209327462 U CN209327462 U CN 209327462U CN 201821928252 U CN201821928252 U CN 201821928252U CN 209327462 U CN209327462 U CN 209327462U
- Authority
- CN
- China
- Prior art keywords
- current
- short circuit
- sample
- circuit
- test sample
- 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
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The utility model discloses the circuits of test sample short circuit current current limliting time a kind of, comprising: power module, for alternating voltage needed for providing measurement；Sample module, for generating current limiting effect to be measured in short circuit；Sampled measurements module has the pressure drop of notable difference compared with normal condition for generating one in short circuit to observe the short-circuit time started to current-limiting protection；Load blocks, current path when for providing normal condition and short circuit, wherein the power module, test sample, sampled measurements module and load blocks are successively contacted, can the accurate test sample short circuit current current limliting time by the utility model.
Description
Technical field
The utility model relates to architectural electricity fireproofing technique fields, more particularly to a kind of test sample short circuit current current limliting
The circuit of time.
Background technique
Currently, a kind of new product, which occurs, in architectural electricity fire protection field is used for electric short circuit current limliting, this kind of product working environment
In short-circuit limit state, and it is the current limliting speed of Microsecond grade again, therefore high want is proposed to the test of product parameters
It asks.Therefore, it is necessary to it is a kind of can the accurate test sample short circuit current current limliting time system.
Utility model content
In order to overcome the deficiencies of the above existing technologies, the utility model is designed to provide a kind of short circuit of test sample
The circuit of current limitation time, with can the accurate test sample short circuit current current limliting time.
In view of the above and other objects, the utility model proposes the circuit of test sample short circuit current current limliting time a kind of,
Include:
Power module, for alternating voltage needed for providing measurement；
Sample module, for generating current limiting effect to be measured in short circuit；
Sampled measurements module has the pressure drop of notable difference to open to observe short circuit for generating one in short circuit compared with normal condition
Begin to the time of current-limiting protection；
Load blocks, current path when for providing normal condition and short circuit,
Wherein, the power module, test sample, sampled measurements module and load blocks are successively contacted.
Preferably, the power module includes an an alternating-current voltage source GR and single-pole single-throw switch (SPST) S.
Preferably, the sample module includes one or more samples.
Preferably, the sampled measurements module includes an oscillograph CR and noninductive sample resistance R, the oscillograph CR and nothing
It is in parallel to feel sample resistance.
Preferably, the load blocks include that a resistive load Z and button switch T, the button switch T are born with resistive
It carries in parallel.
Preferably, the firewire of the alternating-current voltage source GR is connected to one end of single-pole single-throw switch (SPST) S, and the single-pole single-throw(SPST is opened
The other end for closing S is connected to the end of incoming cables of sample TR, and the leading-out terminal of sample TR is connected to one end of the noninductive sample resistance R
With the sampling test pencil anode of oscillograph CR, the other end of the noninductive sample resistance R and the sampling test pencil negative terminal of oscillograph CR are total
It is same to be connected to one end of resistive load Z and one end of button switch T, the other end and button switch T of the resistive load Z
The other end be connected after be connected to the zero curve of the alternating-current voltage source GR.
Preferably, the noninductive sample resistance R value is 0.001~0.1 Europe.
Preferably, the noninductive sample resistance R value is 0.01 Europe.
Preferably, the power module includes that an alternating-current voltage source GR and double-pole double-throw switch.
Preferably, the double-point double-throw switch controls the firewire and zero curve or two phase lines of the alternating-current voltage source GR simultaneously
To ensure safety.
Compared with prior art, a kind of circuit of test sample short circuit current current limliting time of the utility model can be surveyed accurately
It has a try the sample short circuit current current limliting time, solves the problems, such as that short circuit current current limliting product current limliting time calibrating is difficult.
Detailed description of the invention
Fig. 1 is a kind of circuit structure diagram of the circuit of test sample short circuit current current limliting time of the utility model.
Specific embodiment
Below by way of specific specific example and the embodiments of the present invention is described with reference to the drawings, those skilled in the art
Member can be understood easily the further advantage and effect of the utility model by content disclosed in the present specification.The utility model also may be used
It is implemented or is applied by other different specific examples, the various details in this specification can also be based on different viewpoints and answer
With, carried out under the spirit without departing substantially from the utility model it is various modification and change.
Fig. 1 is a kind of circuit structure diagram of the circuit of test sample short circuit current current limliting time of the utility model.Such as Fig. 1 institute
Show, a kind of circuit of test sample short circuit current current limliting time of the utility model, comprising: power module 10, is adopted at sample module 20
Sample measurement module 30 and load blocks 40.
Wherein, power module 10 is by 220V50HZ alternating-current voltage source GR (220V/380V 50HZ) and single-pole single-throw switch (SPST) S
Composition, for alternating voltage needed for providing measurement；Sample module 20 is made of one or more sample TR, in short circuit
When generate current limiting effect to be measured；Sampled measurements module 30 is by oscillograph CR and noninductive sample resistance R (0.001~0.1 Europe, typical case
0.01 Europe of value) composition, there is the pressure drop of notable difference to start to observe short circuit to limit compared with normal condition for generating one in short circuit
Flow the time of protection；Load blocks 40 are made of resistive load Z and button switch T, when for providing normal condition and short circuit
Current path.
When measurement, power module 10, test sample 20, sampled measurements module 30 and load blocks 40 are successively contacted, specifically
For, the firewire of alternating-current voltage source GR is connected to one end of single-pole single-throw switch (SPST) S, and the other end of single-pole single-throw switch (SPST) S is connected to
The end of incoming cables of sample TR, the leading-out terminal of sample TR be connected to noninductive sample resistance R one end and oscillograph CR sampling test pencil just
End, the other end of noninductive sample resistance R and the sampling test pencil negative terminal of oscillograph CR be commonly connected to resistive load Z one end and
One end of button switch T, the other end of resistive load Z and the other end of button switch T are connected to voltage source GR's after being connected
Zero curve.
Preferably, single-pole single-throw switch (SPST) S can control the firewire and zero curve of voltage source GR simultaneously using double-point double-throw switch
(or two phase lines) to ensure safety.
The utility model principle is as follows: when button switch T is pressed, entire electric wiring forms short-circuit condition, sample TR
Short circuit current limitation occurs to act, oscillograph CR record short circuit occurs to complete the noninductive sample resistance of overall process 0.01 to realization short circuit current limitation
R both end voltage waveform, voltage waveform peak point to voltage waveform peak value 5% may be defined as completing the current limliting time.
As it can be seen that a kind of circuit of test sample short circuit current current limliting time of the utility model can accurate test sample short circuit
The current limitation time solves the problems, such as that short circuit current current limliting product current limliting time calibrating is difficult.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Anyone skilled in the art can repair above-described embodiment under the spirit and scope without prejudice to the utility model
Decorations and change.Therefore, the rights protection scope of the utility model, should be as listed in the claims.
Claims (4)
1. a kind of circuit of test sample short circuit current current limliting time, which is characterized in that the circuit includes:
Power module, for alternating voltage needed for providing measurement, the power module includes an alternating-current voltage source GR and one
Single-pole single-throw switch (SPST) S or double-pole double-throw switch；
Sample module, for generating current limiting effect to be measured in short circuit, the sample module includes one or more samples；
Sampled measurements module, for generated in short circuit one compared with normal condition have the pressure drop of notable difference with observe short circuit start to
The time of current-limiting protection, the sampled measurements module include an oscillograph CR and noninductive sample resistance R, the oscillograph CR and nothing
It is in parallel to feel sample resistance；
Load blocks, for provide normal condition and short circuit when current path, the load blocks include a resistive load Z and
Button switch T, the button switch T is in parallel with resistive load；
Wherein, the power module, test sample, sampled measurements module and load blocks are successively contacted；
The firewire of the alternating-current voltage source GR is connected to one end of single-pole single-throw switch (SPST) S, the other end of the single-pole single-throw switch (SPST) S
It is connected to the end of incoming cables of sample TR, the leading-out terminal of sample TR is connected to one end and the oscillograph CR of the noninductive sample resistance R
Sampling test pencil anode, the other end of the noninductive sample resistance R is commonly connected to hinder with the sampling test pencil negative terminal of oscillograph CR
Property one end of load Z and one end of button switch T, the other end of the resistive load Z and the other end phase of button switch T
The zero curve of the alternating-current voltage source GR is connected to after even.
2. a kind of circuit of test sample short circuit current current limliting time as described in claim 1, it is characterised in that: described noninductive
Sample resistance R value is 0.001~0.1 Europe.
3. a kind of circuit of test sample short circuit current current limliting time as claimed in claim 2, it is characterised in that: described noninductive
Sample resistance R value is 0.01 Europe.
4. a kind of circuit of test sample short circuit current current limliting time as described in claim 1, it is characterised in that: the double-pole
The firewire and zero curve or two phase lines that commutator controls the alternating-current voltage source GR simultaneously are to ensure safety.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821928252.0U CN209327462U (en) | 2018-11-21 | 2018-11-21 | A kind of circuit of test sample short circuit current current limliting time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821928252.0U CN209327462U (en) | 2018-11-21 | 2018-11-21 | A kind of circuit of test sample short circuit current current limliting time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209327462U true CN209327462U (en) | 2019-08-30 |
Family
ID=67711086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821928252.0U Active CN209327462U (en) | 2018-11-21 | 2018-11-21 | A kind of circuit of test sample short circuit current current limliting time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209327462U (en) |
-
2018
- 2018-11-21 CN CN201821928252.0U patent/CN209327462U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102411124B (en) | Mechanical property test device for special breaker | |
| CN101368998A (en) | Route selection method suitable for arc suppression coil earthing electric network | |
| CN102128984A (en) | Comprehensive tester of programmable power supply insulation resistance and earthed resistance | |
| CN104777420A (en) | High-voltage switch contact testing system and testing method thereof | |
| CN201654166U (en) | Intelligent fuse life testing system | |
| CN204228800U (en) | A kind of multi-channel DC microampere meter | |
| CN208872843U (en) | Non-equilibrium bridge measuring device for electric automobile charging pile Insulation Inspection System | |
| CN204740311U (en) | Earth -leakage protector tester | |
| CN102879710B (en) | System and method for detecting single-phase ground fault point of power distribution line | |
| CN209327462U (en) | A kind of circuit of test sample short circuit current current limliting time | |
| CN101504429A (en) | Portable on-line measurement instrument for electrician electric bridge drain voltage | |
| CN205263212U (en) | Select testing arrangement that closes a floodgate mutually | |
| CN201926710U (en) | Programmable power supply insulation resistance and grounding resistance comprehensive test instrument | |
| CN205941823U (en) | Specified surplus switch -on breaking capacity testing arrangement | |
| CN204188773U (en) | A kind of multi-functional leakage current detector | |
| CN207965077U (en) | The test device of the external breaker of electric energy meter | |
| CN203337754U (en) | Resonance eliminator detection apparatus | |
| CN109283437A (en) | PT broken string and singlephase earth fault simulator and method | |
| CN209327483U (en) | A kind of current limliting time test circuit of controllable short dot voltage-phase | |
| CN202421342U (en) | Loop resistance tester for intelligent high-voltage circuit breakers | |
| CN209327461U (en) | Dangerous spark identification apparatus at a kind of short-circuit contact | |
| CN206573687U (en) | Arc current detection means under a kind of primary cut-out simulated defect | |
| CN212229071U (en) | Instrument aging testing cabinet | |
| CN209070051U (en) | PT broken string and singlephase earth fault simulator | |
| CN209327431U (en) | A kind of device for demarcating short-circuit current value |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |