日置公司即将推出一款新型的模拟兆欧表，适用于测量住宅和工业设施中的绝缘性和连续性。模拟兆欧表3490将为三种最常见的绝缘测试范围提供坚实可靠的测试，并提供连续性测量功能，一体式的滑动盖设计可以在测试仪连接在端口的情况下保存测试结果，从而显著提高工作效率。适用于国际标准IEC61557-1/-2/-4使得3490非常适合在施工和检修中检查电气设备安装情况。

模拟兆欧表/指针式兆欧表HIOKI 3490的特点

• 一体式单元由滑盖和测试夹组成
  带有多个格层的滑盖，便于收藏测试夹，而无需中断测试，这样使您一打开滑盖就能开始测试，并且清理起来非常简单。
• 发光的刻度盘
  在指针屏幕的右下角巧妙的装入了超亮的LED，照亮整个刻度盘，即使在黑暗的地方测量也能如同在白天测量一样清楚。
• 通过一个LED上嵌入式的触摸开关简单的进行测试
  将3490连接上选件9788远程控制开关，可通过直接使用模拟绝缘测试仪的探头进行测量，从而简化测试程序并节省了时间。测试段的红色LED准确的显示已经按下测量键，由3490供电的在探头前端的白色LED，让操作人员确定准确的测量位置，适用于在电力和照明都有限的情况下的测量。
• 加长的测试针
  标准测试探头设计了35毫米长的针尖，使您在测量所有的端口时无需打开继电器的盖板。除了针端16毫米长的导电面积之外，其他地区都覆盖了可以防止短路的ABS树脂。短直径也让您顺利并方便的插入和拔出电源插座。
• 3档绝缘电阻量程
  有250V/500V/1000V量程供选择，适用于各种应用范围，包括检测低压配电系统测试的电机、变压器和电缆。此外，它能够在1000V的范围内测量高达4000MΩ，您可以验证要求高绝缘特性的DUTS的绝缘性。
• 清晰的刻度盘
  用同一刻度表示250V和500V绝缘电阻范围，使用最少的刻度行数以保持表盘的清晰，容易读取数值。此外，在窗口上方定位的这两个最常见的测试范围可以方便地识别绝缘程度，他们的实际值会显示在屏幕上，所以，当然也没有必要计算耗时。此外，对于绝缘电阻和低电阻测量的0Ω位置设置在同一侧的窗口，避免发生读数的错误。
• 按国际标准的连续性测量
  3Ω量程完全符合规定的IEC60364 - 6 - 61标准，在国际标准电气测量仪器IEC61557之下检查完整的电气设备，使技术员能使用3490检测电阻接地装置和等电位连接。
• 检查一般电源插座在30Ω范围内的理想线路
  使用了线性数值刻度，根据在大洋洲地区所要求的AS/NZ3017标准测试连接线GPO的一致是简单而有效的。
• 持续监视电池电量
  可通过板上的LED确认4节AA（LR6）电池有足够的电平，同时这个也可以再测量时确认电池的电量是否用完。绿色灯亮表示高电量，红色灯亮表示低电量，无灯光的LED则警告电池电量不足以进行下一个测量。因此就不需要在测量之前或测量进行之中做一个单独的电池检查，使工作效率显著提高。
• 温度操作范围广
  在0到50°C的范围或更高的温度中，3490的设计可以在极其炎热的天气条件下依旧确保测量的准确性和可靠性。
• 日本原装生产，质量保证
  经过日本工程师几年的精密测试，证明了3490即使从1米高率下来也不会损坏。

初级应用和使用者

• 安装和维护电气工程和电线
• 电力设备和工厂的检修工、电气设备员和技术员可以使用

模拟兆欧表/指针式兆欧表HIOKI 3490的英文介绍：

Product Overview

HIOKI E.E. CORPORATION will be releasing a new analog insulation tester for general testing of both the insulation and continuity of residential and industrial installations. Model 3490 ANALOG MΩ HiTESTER will offer solid and reliable testing of the three most common insulation testing ranges plus the continuity measurement function, all in one convenient unit that features our popular sliding cover design that lets you store the test leads in the case while they are still connected to the terminals, dramatically increase work efficiency. Compatibility to the IEC61557-1/-2/-4 International Standard makes the 3490 ideal for official inspections of the electrical integrity of installations during construction and maintenance.

Special Features

1. Functional All-in-one Unit Complete with Sliding Cover and Test Leads Storage
   The sliding cover system with wide compartment for storing the test leads without needing to disconnect them lets you start the testing as soon as you open the cover, and makes cleaning up a snap.
2. Luminous Scale
   A super-bright white LED strategically positioned at the bottom-right corner of the window lights up the entire scale for a clear and easy view in dark locations, comparative to viewing the scale in broad daylight.
3. Test with a Simple Touch of the Switch on the LED-embedded Test Lead
   By pairing the 3490 with the optional 9788 TEST LEAD WITH REMOTE CONTROL SWITCH, you can streamline testing procedures and save time by operating the analog insulation tester straight from the probe. A bright red LED on the test lead safely signals that the measure key is being pressed, and a bright white LED at the tip of the probe, powered by the 3490, allows the technician to pinpoint the exact measurement location, ideal for situations where electricity and lighting are limited.
4. Extended Test Pins
   The standard test probes are designed with a long 35mm tip allowing you to test almost all terminals without needing to remove the breaker covers. Except for the 16mm long conductive area from the pin tip, the length of the tip is covered with an ABS resin to protect from short-circuits. The thin diameter also allows you to get in and out of power outlets smoothly and effortlessly.
5. 3 Insulation Resistance Ranges
   With 250V/500V/1000V ranges to choose from, a wide assortment of applications ranging from inspection of low voltage distribution systems to testing of motors, transformers and cables can be answered. Furthermore, the ability to measure up to 4000MΩ at the 1000V range lets you verify the insulation integrity of DUTs that require high insulation characteristics.
6. Crystal Clear Analog Scale
   Using one scale for both the 250V and 500V insulation resistance ranges minimizes the number of lines on the entire scale and contributes to an uncluttered look. In addition, positioning these two most common test ranges at the top of the window makes for easy identification of the insulation level, represented on the scale by their actual values, of course, so there is no need to do time-consuming calculations. Moreover, the 0Ω positions of both the insulation resistance and low resistance testing ranges have been placed on the same side of the window, helping to avoid reading mistakes.
7. Continuity Testing According to International Standards
   The 3Ω range fully complies with the requirements stipulated in the IEC60364-6-61 standard for verifying the integrity of electrical installations under the umbrella of the IEC61557 International Standard for electrical measuring instruments, enabling the technician to use the 3490 for inspecting the resistance of earth connections and equipotential bonding.
8. 30Ω Range Ideal for Wiring Inspection of General Power Outlets
   Engineered with a linear scale, testing for the correct wiring of GPO's in accordance with the AS/NZ3017 guidelines required by the Oceania region is simple and effective.
9. Battery Power Constantly Monitored
   Sufficient voltage level of the four AA (LR6) batteries can be identified by the on-board LED, which also signals when the battery power has been fully consumed during testing. Green means GO for high battery voltage, red refers to low battery levels, and an unlit LED warns of insufficient battery power to conduct further tests. Without the need to do a separate battery check before and even during testing, work efficiency dramatically improves.
10. Wide Operational Temperature Range
    With a 0 to 50°C range, a notch above competitors, the 3490 has been designed to retain accuracy and reliability even in extremely warm weather conditions.
11. Quality Meter Made in Japan
    The taut band meter movement fine-tuned by years of Japanese precision engineering makes it tough to damage the 3490 even from a drop of 1 meter to the ground.

• Electrical construction, wiring installation and maintenance
• Maintenance and electrical contractors and technicians for power utilities and factories