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日本日置公司推出新款钳形表HIOKI 3291 and 3293

世界第一的手机折叠式钳型表! HIOKI 3291/HIOKI 3293便于现场操作！回转钳式电流测试仪

HIOKI（日置电机株式会社：日本国长野县上田市；社长：吉池达悦）开发出融入“便于现场操作”之概念的钳式电流测试仪“CLAMP ON HiTESTER 3291”和“CLAMP ON LEAK HiTESTER 3293”。

保养和点检电气设备不可欠缺的测量工具
对于工厂、仪表间等的维护方面来说，鉴于使用钳式电流测试仪无需切断电线即可安全地进行电流测量操作,所以是从事电气设备保养及点检事务相关人员的必需品，该测量工具所追求的正是工作现场所要求的可操作性和便携带性。CLAMP ON HiTESTER 3291和CLAMP ON LEAK HiTESTER 3293正是符合便于现场操作的电流测试仪。

对于工厂、仪表间等的维护，以及新设电气设备等方面来说，钳式电流测试仪无需切断电线即可方便、安全地进行电流测量操作，所以是从事电气设备保养及点检事务相关人员的必需品。 在日常生产活动中，用于各类现场的钳式电流测试仪经常会发生故障或钳式传感器的破损等事故，根据市场调查，原因多半为诸如“强行放入狭窄的地方发生仪器破损，测量期间看不见显示部强行搬弄”等。而CLAMP ON HiTESTER 3291和CLAMP ON LEAK HiTESTER 3293通过新开发的小型薄形传感器以及可动式显示部，在重视测量现场所要求的可操作性的同时充实了便于携带性和测量功能，追求现场的操作便利性。

日本日置 HIOKI 3293/ HIOKI 3291钳型表的便利性

• 小型薄形传感器 -
  • 3291实施了薄形设计，其可测量导体直径为φ30mm，传感器核心部的厚度仅为8mm。在测量断路器等时，如果电线间距离有12.5mm的话就可进行夹持。
  • 3293也实施了薄形设计，其可测量导体直径为φ24mm，传感器核心部的厚度仅为11mm。其同心圆形形状在测量漏电电流时可降低附近电线的磁场影响并进行测量。
• 显示部的可动回转式构造
  • 电气配线从高处到低处各种都有，可将180°转动的显示部设在测量值最看得清的位置上。而且测量显示会自动反转，操作性非常好。
• 真实效值显示
  • 随着变换装置设备等的迅速普及，电路电流波形的失真波形也越来越多。为了进行正确的电流测量,需要采用真实效值显示
• 利用过滤功能去除高频成分
  • 随着带过滤功能的漏电断路器的不断普及，去除高频成分对漏电电流的测量机会正在增加。通过近似于漏电断路器过滤特性的过滤功能，可进行去除高频成分的测量。
• 对应CE标准的安全设计
  • 3291对应CAT IV 300V（CAT III 600V）标准。
  • 3293对应CAT III 300V标准，2种机型皆可用于日本国内的三相4线440V电路。
• 根据用途进行量程选择的大范围动态量程
  • 3291针对一般电路的负载电流测量，量程从AC60A～1000A，由3个量程构成。
  • 3293可对应从微弱漏电电流测量到一般电路负载电流测量，量程从AC30mA～1000A，由6个量程构成，可根据测量用途进行选择。
• 追求使用便利性
  • 利用单个动作开始测量。松开夹具，电源“ON”，通过自动量程即可进行测量。而且自动关闭电源功能可防止不必要的电池消耗
  • 带背光灯功能，即使在光线很差的现场也可读取测量值。
  • 带最大值显示功能，可轻易测量变动负载电流和漏电电流的变动。

The convenience of being able to safely measure currents without the need to disconnect power lines has made clamp on current meters the required equipment for the technicians who are responsible for maintaining and inspecting new and existing electrical equipment at locations such as factories and offices. Market research indicates that most of the clamp sensor damage and other problems that these instruments frequently experience is caused by excessive twisting in confined spaces, particularly when technicians must forcefully rotate the tool in an effort to see the display during measurement. The CLAMP ON HiTESTER 3291 and CLAMP ON LEAK HiTESTER 3293 address these issues with newly developed low-profile sensors and a movable display, ensuring unmatched ease of use in the field. The new models meet technicians' demands for easy operability in on-site measuring applications with exceptional portability and full-featured measurement functionality.

• Compact, low-profile sensors - The 3291 measures conductors up to 30 mm in diameter with a low-profile sensor core that's just 8 mm thick. It can be clamped in place to measure circuit breakers and other conductors as long as there is at least 12.5 mm of space available between wires. The 3293 measures conductors up to 24 mm in diameter with a low-profile sensor core that's just 11 mm thick. The core's concentric design acts to reduce the influence of magnetic fields from nearby power lines, even when measuring leak currents.
• Flip-down display - The ability to rotate the display through 180° keeps readings visible regardless of the configuration of the wiring being measured and its location above or below the user. The display also reverses automatically for additional operability.
• True RMS - The rapid adoption of equipment such as inverters has caused many circuit current waveforms to be distorted. The 3291 and 3293 use a True RMS rectification method to ensure accurate current measurement.
• Built-in filter for rejecting the high-frequency component - The widespread use of filtered earth leakage circuit breakers (ELCBs) has increased the need to reject the high-frequency component when measuring leak currents. A filter approximating the characteristics of an ELCB enables the 3291 and 3293 to take measurements after rejecting the high-speed component.
• Safe, CE Marking compliant design - The 3291 is CAT IV 300 V (CAT II 600 V) compliant, while the 3293 is CAT III 300 V compliant. Both models can be used with 3-phase 4-wire 440 V lines.
• Wide dynamic range and application-specific measurement ranges - With 3 measurement ranges extending from 60 A to 1000 A (AC), the 3291 is designed to measure load currents in typical circuits. The 3293 features 6 measurement ranges extending from 30 mA to 1000 A (AC) that can be selected according to the measurement application, enabling it to measure everything from minute leak currents to load currents in typical circuits.
• Unmatched ease of use -
  • Start measuring with a single action. Opening the jaws powers on the instrument and activates the auto range feature so you can start taking measurements immediately. Auto power off helps prevent battery wastage.
  • A backlight lets you read measurements in dim locations.
  • A peak value display makes it easy to measure fluctuating load currents and leak current fluctuations.

发布日期：2008-5-16　【返回】【下载】