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          您现在的位置:国产精品视频二区不卡,中文字幕无线在线视频观看,亚洲av久播在线观看,手机看片av永久免费 > 材料和元器件测试 > LCR电阻电感电容阻抗测试 > 日本ECG DWX-05Impulse Winding Tester层间短路测试机
           

          日本ECG DWX-10Impulse Winding Tester层间短路测试机,现货照片


           

          本测试机系瞬间施加Impulse 至测试线圈,利用其能量损失,经类比/数位转换计算(10ns),自动判定OK/NG结果;与一般传统电流式(破坏式)之测试方式不同,不会对产品造成潜在性的破坏。
          产品特点:
          ■ 8.4英寸超大彩色TFT液晶萤幕;
          ■ 创新的低感线圈(5uH以上)测试.(SMD Pcwer Inductors、Choke、微型马达,变压器……等)
          ■ 最高5000V Impulse输入电压;
          ■ Q值、L值、CORONA VALUE可同 时侦测,准确度高;
          ■ 利用不同颜色区隔标准波和测试波,可清楚目视其差异性;
          ■ 简易的旋转盘式操作
          ■ 内建196组波形记忆和700组Flash记忆卡;
          ■ 10ns取样速率;(频率为100MHZ)
          ■ 可与PLC控制器或电脑连线,供自动化测试;(具RS-232C、Printer Port、I/O Parallel、Ethernet Adaptor等界面)
          ■ 外型轻巧,攜帶方便 (附把手)

          检测项目:
          层间短路(Layer Short)、电暈放电(Corona Discharge)、繞线绝缘不良、跨槽、碎线夹繞、漆包线Pin Hole、 Coating层偏心/不均龟裂、伸张绝缘差、断线、圈数不对、线径不同、铁心碰撞。

          • Innovative tester that offers new solution for low inductance coil test
          • Advanced technology allows a complete waveform and partial discharge observation by the resistive voltage divider
          • High sampling rate of 100MHz delivers highly sensitive and precise test
          • Partial discharge amount calculated by the Laplacian method is displayed clearly in separate sub-window
          • The 8.4-inch color TFT LCD screen clearly displays the waveform and is easy to view
          • Combination of proven Area, Dif. Area and Flutter comparison methods can be selected to perform the layer short test
          • Compact flash memory device offers unlimited memory of the master data
          • Printing of the screen hard copy can be made easily through the Centronics printer port
          • Various operations become much easier with the rotary dial and the menu display through the icon button
          • Optional Ethernet adaptor enables the DWX's remote control operation through LAN connection
          • DWX unit is compact, durable and weighs only 10 Kg

          With the advanced requirement of miniaturization and high frequency technology of coil production, the DWX tester is designed to test other coils and low inductance coils used in high-end electronic components. Through the use of impulse power source with high-speed switch, highly efficient input circuit, and high-speed A/D sampling circuit, the DWX tester can offer a new solution to the low inductance coil tests.

          DWX Series Features

          This innovative tester offers a news solution for low inductance coil test.

          With the advanced requirement of miniaturization and high frequency technology of coil production, the DWX tester is designed to test other coils and low inductance coils used in high-end electronic components. Through the use of impulse power source with high-speed switch, highly efficient input circuit, and high-speed A/D sampling circuit, the DWX tester can offer a new solution to the low inductance coil tests.

          Its advanced technology allows a complete waveform and partial discharge observation by the resistive voltage divider.

          The high performance voltage divider allows the DWX input circuit of impulse waveform to generate a complete wave pattern without any distortion. At the same time, it also helps improve the partial discharge sensitivity and detection capability 
          (The DWX's detection sensitivity is improved compared with that of our DW & DWS series, except for the DW-9505F).

          Its high sampling rate of 100 MHz delivers highly sensitive and precise test.

          Its high-speed A/D sampling helps to verify the extremely short impulse response of the low inductance coil. At the same time, the 8 kByte sampling, with highly refined data analysis, can precisely capture the subtle difference in the wave patterns.

          The partial discharge amount calculated by the Laplacian method is displayed clearly in a separate sub-window.

          The employed Laplacian method calculates the partial discharge (PD) generated by high voltage impulse. This PD, abstracted from the voltage wave, visually displays a bar graph in a separate sub-window, offering an easy and comfortable viewing.

          The 8.4-inch color TFT LCD screen clearly displays the waveform and is easy to view.
          A combination of our proven Area, Dif-Area and Flutter comparison methods can be selected to perform the layer short test.

          All types of coils can ve evaluated by choosing a combination of various test mehods: Area Size Comparison, Differential Area Size Comparison, Flutter Value (Corona Discharge) Detection, and Laplacian Value and Laplacian Value (Corona Discharge) Detection. (* The Flutter Value Detection and the Laplacian Value Detection can only be selected alternatively.)

          The equipped compact flash memory device offers an unlimited memory of the master data.

          HOW DOES THE IMPULSE WINDIGN TESTER WORK?

          The impluse coil-winding tests the electrical characteristics of coil winding without damaging the sample. The prerequisite conditions for quality of a coil can be detected at just a glance. The detection is carried out when the same electric impulse by capacitor discharge is applied to the master and the test coils. The voltage dacay waveform is generated in response to the impluse, related to the Q-factor and inductance (impedance) of the coil. In this sense, the tester can detect turn & layer short, the differences in the number of turns and the matericak of the core. If high impluse voltage is applied, the poor insulation will appear as a corona of layer discharge.

          1.AREA SIZE COMPARISON

          This compares each area size of the master coil and the sample coil waveform in the intentionally determined zone. In Fig. 1, the area size is calculated between 'a' and 'b', and OK/NG(Pass/Fail) is determined by comparing the area size(i.e. what percent (%) the sample waveform's area size differs from that of the master waveform). The detecting criterion is set by %. When the result is within the set value in %, the test coil is considered to be "OK". The area size of the wave is nearly proportional to the energy loss in the coil; therefor, the test coil is considered to be OK/NG by the amount of its energy loss. For example, when a sample coil layer has a short circuit, the short circuit area is reflected as an increase of energy loss.

          2.DIFFERENTIAL AREA COMPARISON

          This calculates the area size of differential portion between the master coil and the sample coil waveforms in the intentionally determined zone. In Fig. 2, the differential area size is calculated between 'a' and 'b', and OK/NG is judged by detecting how large the differential area size is. The detecting criterion is set by %. When the result is within the set value in %, it is considered to be "OK". The differential area size represents the L value and total energy loss. This method is especially effective, for example, when the change of the L value causes major problems.

          3.CORONA DISCHARGE (FLUTTER VALUE) DETECTION

           Regardless of the difference in waveforms, this method only detects the high frequency energy of corona discharge as shown in Fig. 3. I detects the corona value in the intentionally determined zone of the waveform, and judges OK/NG by the corona evaluation value. The detecting criterion is set by an integer. The result that appears within the range is considered to be "OK". The wave is converted by derivative calculation and its area size is calculated. In an e quivalent analog circuit, the energy value of the wave that passes through high pass filter is measured.

          4.CORONA DISCHARGE (LAPLACIAN VALUE) DETECTION

          The Laplacian is a method in digital filter processing used for detecting the edge intensity of an image. In the application to the Flutter Value, it measures the 2nd derivative of the image to find and extract the partial discharge. The discontinuity of the value hidden in the wave data (noise) can be digitized, offering an easier detection of the partial discharge (Fig. 4).

          5.VISUAL COMPARISON

          The superimposed master and sample waves are displayed on the screen. This allows an easy observation of the differences in characteristics of the two coils.

           

          DWX Series Specifications

            DWX-01A DWX-05A DWX-10
          Applied Voltage, Step, and Energy
          * At 1 kOhm Resistive Load
          50V~1000V
          (10V Step)
          Max 5 milli-Joules
          500V~5000V
          (100V Step)
          Max 0.12 Joules
          1000V~10000V
          (200V Step)
          Max 0.5 Joules
          Inductance Test Range More than 10μH More than 10μH More than 50μH
          Sampling Speed 8bit/10nano-sec.(100MHz)
          Sampling Memory 8192- Byte
          Sampling Range 10 Ranges: -4、-3、-2、-1、0、1、2、3、4、5
          (Width 0 to 5 is the Compatible Range with the DW Series)
          Input Test Circuit (Impedance) Resistive Voltage Divider(5MOhm)
          Screen Display Resolution Waveform Display Range 640 x 480 Dots (VGA), 8.4" TFT Color LCD, 4 Color Display
          512 x 256 Dots
          Detection Mode Master Waveform Comparison 
          Detection by Area Size Comparison, Differential Area Comparison
          and Corona Discharge 
          Master Waveform Memory Internal Memory: 196 Types (14 Types per Page, 14 Pages)
          700-Types by Compact Flash Memory (14 Types/50 Pages)
          External Interface Parallel I/O (Start, Reset, OK, NG, Busy, Master Numbers, etc.)
          RS-232C (Test Control, Test Data, etc.)
          Printer Port (Screen Hard Copy)
          Ethernet Adapter (Option)
          Accessories A Tester Cable (1.5m), A Power Cable (With 3P Adaptor)
          A Compact Flash Memory, A Parallel I/O Connector
          An Instruction Manual and Inspection Record
          Environmental Conditions 0℃-40℃, AC Voltage Upon Your Request:100V/115v/220v/240V±5%
          Dimension (Excluding the Handle)/ Weight 345(W)×185(H)×370(D) Approx10Kg 345(W)×325(H)×370(D)
          MODELS Applied Voltage Step Energy (At 1kOhm Resistive Load)
          DWX-01 50V - 1000V 10V Step Max 5 mill-Joule
          DWX-05 500V - 5000V 100V Step Max 0.12 Joules
          DWX-10 1000V - 10000V 200V Step Max 0.5 Joules
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