100KV絕緣介電強(qiáng)度試驗(yàn)儀  氣體電介質(zhì)擊穿

在電場作用下氣體分子發(fā)生碰撞電離而導(dǎo)致電極間的貫穿性放電.其影響因素很多,主要有作用電壓,電板形狀,氣體的性質(zhì)及狀態(tài)等.氣體介質(zhì)擊穿常見的有直流電壓擊穿,工頻電壓擊穿,高氣壓電擊穿,沖擊電壓擊穿,高真空電擊穿,負(fù)電性氣體擊穿等.空氣是很好的氣體絕緣材料,電離場強(qiáng)和擊穿場強(qiáng)高,擊穿后能迅速恢復(fù)絕緣性能,且不燃,不爆,不老化,無腐蝕性,因而得到廣泛應(yīng)用.為提供高電壓輸電線或變電所的空氣間隙距離的設(shè)計(jì)依據(jù)（高壓輸電線應(yīng)離地面多高等）,需進(jìn)行長空氣間隙的工頻擊穿試驗(yàn).

100KV絕緣介電強(qiáng)度試驗(yàn)儀  主要配置：

1、試驗(yàn)主機(jī)一臺(tái)              5萬伏高壓發(fā)生器一臺(tái)

2、電磁自動(dòng)放電裝置一套。     電壓擊穿計(jì)算機(jī)測控軟件一套

3、全自動(dòng)微電腦電壓調(diào)壓裝置一套(串口方式)

4、試驗(yàn)電極規(guī)格(紫銅)         計(jì)算機(jī)一套(專用抗強(qiáng)干擾計(jì)算機(jī))

5、試驗(yàn)用油盒一只：材質(zhì)為有機(jī)玻璃     國家一級(jí)計(jì)量鑒定質(zhì)檢份

6、產(chǎn)品使用說明書一份            合格證一份

介電系數(shù)，是一個(gè)在電的位移和電場強(qiáng)度之間存在的比例常量。這一個(gè)常量在自由的空間（一個(gè)真空）中是8.85?10的-12次方法拉第/米（F/m）。在其它的材料中，介電系數(shù)可能差別很大，經(jīng)常遠(yuǎn)大于真空中的數(shù)值，其符號(hào)是eo。 在工程應(yīng)用中，介電系數(shù)時(shí)常在以相對(duì)介電系數(shù)的形式被表達(dá)，而不是絕對(duì)值。如果eo表現(xiàn)自由空間（是，8.85?10的-12次方F/m）的介電系數(shù)，而且e是在材料中的介電系數(shù)，則這個(gè)材料的相對(duì)介電系數(shù)（也叫介電常數(shù)）由下式給出： ε1=ε/εo=ε?1.13?10的11次方 很多不同的物質(zhì)的介電常數(shù)超過1。這些物質(zhì)通常被稱為絕緣體材料，或是絕緣體。普遍使用的絕緣體包括玻璃，紙，云母，各種不同的陶瓷，聚乙烯和特定的金屬氧化物。絕緣體被用于交流電（AC），聲音電波（AF）和無線電電波（射頻）的電容器和輸電線路。

Product features:

1. Using intelligent integrated circuits for constant speed boosting.

2. Support short circuit test requirements in a short period of time.

3. Voltage test accuracy:≤1%.

4. Test voltage continuously adjustable: 0-50KV.

5. The current can be collected up to mA level.

6. Provide a national first level measurement unit calibration and verification certificate or a certificate of the customer's designated measurement unit.

7. Power supply: 220V?10% single-phase AC voltage and 50Hz?1% frequency.

8. Current and voltage stability: When the external power supply voltage fluctuates by 10%

Dielectric strength is a measure of the electrical strength of a material as an insulator It is defined as the maximum voltage per unit thickness that a sample can withstand when it is broken down, expressed in volts per unit thickness The higher the dielectric strength of a substance, the better its quality as an insulator

Dielectric strength is a measure of a material's ability to withstand high voltage without generating dielectric breakdown. The sample is placed between electrodes and the applied voltage is increased through a series of steps until dielectric breakdown occurs, in order to measure the dielectric strength. Although the results obtained are in kV/mm units, it does not indicate that they are independent of the thickness of the sample. Therefore, comparability of data for various materials can only be obtained under the condition of the same sample thickness.

Insulation dielectric strength test and insulation resistance test

The insulation dielectric strength test is the application of a specified voltage within a specified time period between insulated components or between insulated components and ground, in order to determine whether the motor can operate safely at rated voltage and whether it can withstand overvoltage caused by switches, surges, and other similar phenomena, and to evaluate whether the insulation material or insulation gap of the motor is suitable. If the motor has defects, breakdown discharge or damage may occur after applying the test voltage. The breakdown discharge is manifested as flashover (surface discharge), spark discharge (air discharge), or breakdown (breakdown discharge) phenomenon. Excessive leakage current may cause changes in electrical parameters or physical properties.

產(chǎn)品特點(diǎn)：

1、采用智能集成電路進(jìn)行勻速升壓。

2、支持短時(shí)間內(nèi)短路試驗(yàn)要求。

3、電壓試驗(yàn)精度： ≤1％。

4、試驗(yàn)電壓連續(xù)可調(diào)：0--50KV。

5、電流可采集到mA級(jí)。

6、出具國家一級(jí)計(jì)量單位校準(zhǔn)檢定證書或出具客戶指定計(jì)量單位的證書。

7、電源：220V?10%的單相交流電壓和50Hz?1%的頻率。

8、電流電壓穩(wěn)定度:外界電源電壓波動(dòng)10%時(shí)

介電強(qiáng)度是一種材料作為絕緣體時(shí)的電強(qiáng)度的量度.它定義為試樣被擊穿時(shí),單位厚度承受的最大電壓,表示為伏特每單位厚度.物質(zhì)的介電強(qiáng)度越大,它作為絕緣體的質(zhì)量越好.

介電強(qiáng)度，是材料抗高電壓而不產(chǎn)生介電擊穿能力的量度，將試樣放置在電極之間，并通過一系列的步驟升高所施加的電壓直到發(fā)生介電擊穿，以次測量介電強(qiáng)度。盡管所得的結(jié)果是以kv/mm為單位的，但并不表明與試樣的厚度無關(guān)。因此，只有在試樣厚度相同的條件下得到各種材料的數(shù)據(jù)才有可比性。

絕緣介電強(qiáng)度試驗(yàn)與絕緣電阻測試

絕緣介電強(qiáng)度試驗(yàn)是在相互絕緣的部件之間或絕緣的部件與地之間,在規(guī)定時(shí)間內(nèi)施加規(guī)定的電壓,以此來確定電機(jī)在額定電壓下能否安全工作,能否耐受由于開關(guān)、浪涌及其它類似現(xiàn)象所導(dǎo)致的過電壓的能力,從而評(píng)定電機(jī)絕緣材料或絕緣間隙是否合適。如果電機(jī)有缺陷,則在施加試驗(yàn)電壓后,會(huì)產(chǎn)生擊穿放電或損壞。擊穿放電表現(xiàn)為飛弧(表面放電)、火花放電(空氣放電)或擊穿(擊穿放電)現(xiàn)象。過大的漏電流可能引起電參數(shù)或物理性能的改變 。

軟件功能:

01、軟件平臺(tái)：WINDOWS窗口操作平臺(tái)，界面直觀，便于操作

02、曲線顯示：在實(shí)驗(yàn)過程中可以動(dòng)態(tài)顯示試驗(yàn)曲線

03、數(shù)據(jù)導(dǎo)出：可以對(duì)試驗(yàn)結(jié)果導(dǎo)入EXCEL表格

04、實(shí)驗(yàn)報(bào)告：可以人為設(shè)置報(bào)告名稱，并對(duì)實(shí)驗(yàn)報(bào)告進(jìn)行打印

05、試驗(yàn)方式：可以根據(jù)需求對(duì)直流試驗(yàn)和交流試驗(yàn)進(jìn)行靈活選擇

06、試驗(yàn)方法：可以根據(jù)需求自行選擇擊穿電壓、耐壓試驗(yàn)、梯度試驗(yàn)

07、參數(shù)設(shè)置：可以根據(jù)不同的試驗(yàn)方式及試驗(yàn)方法靈活設(shè)置所需的不同參數(shù)值

08、試樣設(shè)置：可對(duì)不同標(biāo)準(zhǔn)的試樣參數(shù)靈活設(shè)置

09、人員管理：設(shè)置用戶名及密碼，不同的操作員登入進(jìn)行不同的試驗(yàn)，互不影響

10、標(biāo)準(zhǔn)選擇：含有不同標(biāo)準(zhǔn)，可根據(jù)需求自行選擇

11、連續(xù)操作：連續(xù)操作試驗(yàn)時(shí)，可直接在軟件里結(jié)束試驗(yàn)，進(jìn)行二次試驗(yàn)

Software features:

01. Software platform: Windows window operation platform, intuitive interface, easy to operate

02. Curve display: During the experiment, the test curve can be dynamically displayed

03. Data export: It is possible to import experimental results into an Excel spreadsheet

04. Experimental report: The report name can be manually set and the experimental report can be printed

05. Test method: Flexible selection of DC and AC tests can be made according to requirements

06. Test method: You can choose breakdown voltage, withstand voltage test, and gradient test according to your needs

07. Parameter setting: Different parameter values can be flexibly set according to different testing methods and methods

08. Sample setting: Flexible setting of sample parameters for different standards

09. Personnel management: Set username and password, different operators log in for different experiments, without affecting each other

10. Standard selection: Contains different standards, can be selected according to needs

11. Continuous operation: During the continuous operation test, the test can be directly ended in the software and a second test can be conducted

絕緣介電強(qiáng)度試驗(yàn)與絕緣電阻測試是不能等同的。清潔、干燥的絕緣體盡管具有高的絕緣電阻,但卻可能發(fā)生不能經(jīng)受絕緣介電強(qiáng)度試驗(yàn)的故障;反之,一個(gè)臟的、損傷的絕緣體,其絕緣電阻雖然低,但在高電壓下也可能不會(huì)被擊穿。由于絕緣部件是由不同材料制成或是由不同材料合成的,它們的絕緣電阻各不相同。因此,絕緣電阻的測試不能完全代表對(duì)清潔度或無損傷程度的直接量度。但是,這種測試對(duì)確定高溫、潮濕、污物、氧化或揮發(fā)性材料等對(duì)絕緣特性影響程度是極為有益的 。

事實(shí)上,一臺(tái)由于過熱而使絕緣材料已經(jīng)老化變脆的電機(jī),其絕緣電阻仍可高達(dá)100MΩ,但卻無法通過絕緣介電強(qiáng)度試驗(yàn)。絕緣電阻測試對(duì)絕緣材料受潮特別敏感,對(duì)絕緣材料老化則顯得力不從心。

絕緣介電強(qiáng)度試驗(yàn)一般采用50Hz正弦波交流電,而絕緣電阻測試均采用直流電。

整機(jī)組成：

升壓部件：由調(diào)壓器和高壓變壓器組成0～50KV的升壓部分。動(dòng)部件：由步進(jìn)電機(jī)均勻調(diào)節(jié)調(diào)壓器使加給高壓變壓器的電壓變化。檢測部件：由集成電路組成的測量電路。通過信號(hào)線把檢測的模擬信號(hào)和開關(guān)信號(hào)傳給計(jì)算機(jī)。計(jì)算機(jī)軟件：通過智能電路把由檢測設(shè)備采集的測控信號(hào)傳給計(jì)算機(jī)。計(jì)算機(jī)根據(jù)采集的信息控制設(shè)備運(yùn)行并處理試驗(yàn)結(jié)果。試驗(yàn)電極：根據(jù)國家標(biāo)準(zhǔn)(1408.1-2006)隨設(shè)備提供三個(gè)電極，具體規(guī)格為：Ф25mm?25mm兩個(gè)；Ф75mm?25mm一個(gè)。（訂做除外）

Overall composition:

Boosting component: The boosting part of 0-50KV is composed of a voltage regulator and a high-voltage transformer. Moving parts: The voltage regulator is uniformly adjusted by a stepper motor to change the voltage applied to the high-voltage transformer. Detection component: a measurement circuit composed of integrated circuits. Send the detected analog signals and switch signals to the computer through signal lines. Computer software: transmits the measurement and control signals collected by the detection equipment to the computer through intelligent circuits. The computer controls the operation of the equipment based on the collected information and processes the test results. Test electrodes: According to the national standard (1408.1-2006), three electrodes are provided with the equipment, with specific specifications as follows:ФTwo 25mm x 25mm;ФOne 75mm x 25mm. (Excluding customization)

控制方式：計(jì)算機(jī)控制

產(chǎn)品型號(hào)：BDJC系列

符合國標(biāo)：GB/T1408-2006、ASTM D149

適用材料：固體絕緣材料

功   率：10KVA

最大電壓：100KV

試驗(yàn)方式：直流/交流：擊穿、耐壓、階梯

顯示方式：曲線/數(shù)據(jù)顯示，數(shù)據(jù)打印。

試驗(yàn)空間:絕緣油/空氣

升壓速率：10V/S-10KV/S

整機(jī)精度：≤2%

滿足標(biāo)準(zhǔn)：

儀器依據(jù)以下標(biāo)準(zhǔn)中對(duì)擊穿電壓部分的要求制造

GB/T 1408-2006絕緣材料電氣強(qiáng)度試驗(yàn)方法

GB/T1695-2005硫化橡膠工頻電壓擊穿強(qiáng)度和耐電壓強(qiáng)度試驗(yàn)

GB/T3333電纜紙工頻電壓擊穿試驗(yàn)方法

HG/T 3330絕緣漆漆膜擊穿強(qiáng)度測定法

GB12656電容器紙工頻電壓擊穿試驗(yàn)方法

ASTM D149固體電絕緣材料在工業(yè)電源頻率下的介電擊穿電壓和介電強(qiáng)度的試驗(yàn)方法.

擊穿場強(qiáng)

在發(fā)生擊穿時(shí)的電場強(qiáng)度依賴于電介質(zhì)（絕緣體）的各自的幾何形狀和與該電場被施加在電極上，以及在其中所述增加速率電場被施加。由于電介質(zhì)材料通常含有微小的缺陷，實(shí)際的電介質(zhì)強(qiáng)度將是理想的無缺陷材料的固有電介質(zhì)強(qiáng)度的一部分。與相同材料的較厚的樣品相比，介電膜傾向于表現(xiàn)出更高的介電強(qiáng)度。例如，幾百納米至幾微米厚的二氧化硅膜的介電強(qiáng)度大約為0.5GV / m。然而非常薄的層（下面，比方說，100納米）成為由于部分導(dǎo)電電子隧穿。在需要最大的實(shí)際介電強(qiáng)度的地方，例如高壓電容器和脈沖變壓器，使用多層薄介電膜。由于氣體的絕緣強(qiáng)度取決于電極的形狀和結(jié)構(gòu)而變化，通常以氮?dú)獾慕殡姀?qiáng)度的一部分來測量。

Test preparation and environment:

1. Sample treatment

(1) Dip a silk cloth in a solvent that has no corrosive effect on the sample and wipe it clean.

⑵Pre processing and conditional processing: The processing conditions and methods can be selected from Appendix Tables 1 and 2 of this standard based on the performance requirements of the product. Special requirements can be specified separately by the product standard.

The electrical strength of insulation materials varies with temperature and moisture content. Unless otherwise specified for the test material, the sample should be treated for no less than 24 hours at 23?2℃and a relative humidity of (50?5)%.

Before the test, the sample that has been dampened or immersed in liquid medium should be gently sucked off with filter paper to remove the liquid droplets. The time from the sample to the completion of the test should not exceed 5 minutes.

2. Media:

⑴Gas medium: Air is used. If there is a flashover, a soft silicone rubber anti arc ring can be added around the electrode. There is a circular gap of about one millimeter between the anti flying arc ring and the electrode, with a ring width of 30mm.

⑵Liquid medium: Clean transformer oil is used for normal tests and hot tests below 90℃, and clean overheated cylinder oil is used for hot tests between 90℃and 300℃.

3. Test environment:

⑴Normal test environment:

The temperature is 20?5℃and the relative humidity is 65?5%.

The conditions for hot or humid environment testing shall be specified in Table 2 of the product standard reference record.

Determination of breakdown:

The presence of small holes, cracks, and burnt marks along the direction and position of the applied voltage on the sample indicates breakdown. If the marks are unclear, repeated application of the test voltage can be used to determine.

試驗(yàn)準(zhǔn)備和環(huán)境：

1．試樣的處理

⑴用綢布蘸對(duì)試樣無腐蝕作用的溶劑,擦凈試樣。

⑵預(yù)處理和條件處理：處理?xiàng)l件和方法可根據(jù)產(chǎn)品的性能要求從本標(biāo)準(zhǔn)附錄表1和表2中選取。有特殊要求的可由產(chǎn)品標(biāo)準(zhǔn)另行規(guī)定。

⑶絕緣材料的電氣強(qiáng)度隨溫度和含水量而變化。除被試材料已有規(guī)定外者，試樣應(yīng)在23?2℃，相對(duì)濕度（50?5）%的條件下處理不少于24h。

⑷經(jīng)過受潮或浸液體媒質(zhì)的試樣在試驗(yàn)前應(yīng)用濾紙輕輕吸去液滴，從試樣取出到試驗(yàn)完畢不應(yīng)超過5分鐘。

⒉ 媒質(zhì)：

⑴氣體媒質(zhì)：采用空氣，如有閃絡(luò)可在電極周圍加柔軟硅橡膠防飛弧圈。防飛弧圈與電極之間有一毫米左右的環(huán)狀間隙，環(huán)寬30mm。

⑵液體媒質(zhì)：常態(tài)試驗(yàn)及90℃以下的熱態(tài)試驗(yàn)采用清潔的變壓器油，90℃至300℃以內(nèi)的熱態(tài)試驗(yàn)采用清潔的過熱氣缸油。

⒊試驗(yàn)環(huán)境：

⑴常態(tài)試驗(yàn)環(huán)境：

溫度為20?5℃，相對(duì)濕度為65?5%。

⑵熱態(tài)試驗(yàn)或潮濕環(huán)境試驗(yàn)條件由產(chǎn)品標(biāo)準(zhǔn)參照錄中表2予以規(guī)定。

擊穿的判斷：

試樣沿施加電壓方向及位置有貫穿小孔、開裂、燒焦等痕跡為擊穿，如痕跡不清可用重復(fù)施加試驗(yàn)電壓來判斷。

 我廠主要產(chǎn)品有：拉力材料試驗(yàn)機(jī)，海綿泡沫落球回彈試驗(yàn)機(jī)，海綿泡沫壓陷硬度測驗(yàn)儀，海綿泡沫疲勞壓陷試驗(yàn)機(jī)，熔融指數(shù)儀，塑料滑動(dòng)摩擦磨損試驗(yàn)機(jī)，電壓擊穿試驗(yàn)儀，塑料球壓痕硬度計(jì)，馬丁耐熱試驗(yàn)儀，海綿泡沫拉伸強(qiáng)度試驗(yàn)機(jī)，介電常數(shù)與介質(zhì)損耗測試儀，電容率測試儀，體積表面積電阻率測試儀，低溫脆性沖擊試驗(yàn)儀，維卡熱變形試驗(yàn)儀，啞鈴制樣機(jī)，阿克隆磨耗試驗(yàn)機(jī)，簡支梁沖擊試驗(yàn)機(jī)，懸臂梁沖擊試驗(yàn)機(jī)，熔體流動(dòng)速率儀，無轉(zhuǎn)子硫化儀等。
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