产品介绍
The Hi-Test Insulator Tester tests energized or de-energized insulators for non-visible internal failures at any AC line voltage.These non-visible failures are known causes of Radio Frequency/ Television Interference (RF/TVI),blinking lights,recloser operations and blown fuses. They are also a threat to line crew safety when performing energized maintenance.Detect non-visible insulator failures before they cause operations difficulties or safety threats to line crews.
The Insulator Tester can be used as a routine maintenance tool to test insulators quickly,safely and reliably.When testing insulators in service,it can be applied to any porcelain,glass or cap and pin transmission or distribution insulators at any voltage.However,there must be two or more insulators between the conductor and ground.It can also be used to test installed,de-energized insulators prior to energizing and single insulators prior to installation.
The Insulator Tester is a portable instrument that applies a current limited, 10kVDC potential across an insulator through two probes and displays the condition of the insulator on an LED scale and warning buzzer on itsfront panel.The unit is easy-to-use as each insulator is tested separately and its condition displayed immediately on an easily viewed LED scale.The tester instantly identifies defective insulators with an audible warning and LED scale indication.
BENEFITS
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Instantly identifies insulators which are defective due to non-visible internal cracks
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Use as a routine maintenance tool to improve system reliability and enhance line crew safety when energized maintenance work is performed
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Use as a troubleshooting tool in tracing the sources of ground fault trips and RF/TV interference,which can be caused by faulty insulators
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Stretch your materials purchasing dollar by testing insulators for recycling
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Use as a maintenance tool to verify insulator string integrity prior to shunting insulator bells when energized maintenance work is performed
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Will not promote flash over when used on energized insulators because it functions as an insulator as well as an insulator tester
FEATURES
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Universal spline for attachment to a hotstick
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Built-in power supply applies a current limited 10kVDC potential across an insulator
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Buzzer provides audible warning of bad insulators
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LED scale displays the condition of the insulator being tested,with a maximum leakage current of 50 micro amps on an expanded scale
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Powered by a lithium-ion battery,which can last for several days of testing (depending on usage)
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Rechargeable overnight from 120/240VAC
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Operating range of -25˚F (-32°C) to 125˚F (52°C)
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Lightweight – weighs only 3 lbs.(1.36kg)
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Operating frequency of 50/60Hz
This product can be hand held for convenient testing of de-energized insulators in store yards, reclaim areas and in the field just prior to installation of insulators on the line.The tester is equipped with a universal spline for use with a hotstick allowing for convenient energized testing of insulators immediately prior to live line work.It is capable of testing insulators in a string at all voltage levels.
OPERATION
The IT-4 Insulator Tester is a self-contained unit.There are two probes that attach to the instrument.They can be adjusted in three different positions for individual preference.Once the probes are in place,it is ready to test de-energized porcelain, glass,suspension or cap and pin insulators.Simply hold the unit by the universal spline and press the red power button. To test an insulator,place one probe on the cap of the insulator and the other on the pin.If the LED display is lit past the second yellow LED and/or the buzzer sounds,the insulator is conductive and should be tested for surface contamination.
Testing for surface contamination is just as easy.Placing the probes on the skirt of the insulator will determine if the surface is conductive.If the surface is found to be conductive,the insulator should be cleaned and retested.
Testing multi-piece insulators while they remain in service can also be done with the IT-4.Attach a hotstick to the universal spline on the front of the instrument,and by following the same testing procedures,defective insulators can be identified in the field while energized,with no disruption of service.
The IT-4 can help a utility increase system reliability, reduce customer complaints and stretch their materials budget by recycling good insulators.
HD Electric IT-4/220P绝缘子测试仪
Hi-Test 绝缘子测试仪在任何交流线路电压下测试通电或断电绝缘体的不可见内部故障。这些不可见故障是射频/电视干扰 (RF/TVI)、闪烁灯、重合器操作的已知原因和熔断的保险丝。在执行带电维护时，它们也会威胁到线路工作人员的安全。在不可见的绝缘子故障给线路工作人员造成操作困难或安全威胁之前检测它们。
绝缘子测试仪可作为日常维护工具，快速、安全、可靠地测试绝缘子。在测试使用中的绝缘子时，它可以应用于任何电压下的任何瓷、玻璃或帽针式输配电绝缘子。导体和地之间必须有两个或多个绝缘体。它也可用于测试已安装、通电前未通电的绝缘体和安装前的单个绝缘体。
绝缘体测试仪是一种便携式仪器，它通过两个探头在绝缘体上施加限流的 10kVDC 电位，并在 LED 刻度上显示绝缘体的状况，并在其前面板上显示警告蜂鸣器。该装置易于使用，因为每个绝缘体单独测试，其状态立即显示在易于查看的 LED 刻度上。测试仪通过声音警告和 LED 刻度指示立即识别有缺陷的绝缘子。
好处
即时识别因不可见内部裂纹而有缺陷的绝缘体
在执行通电维护工作时用作日常维护工具，以提高系统可靠性并增强线路工作人员的安全性
用作跟踪接地故障跳闸和 RF/TV 干扰源的故障排除工具，这可能是由绝缘体故障引起的
通过测试绝缘子的回收利用来延长您的材料采购成本
在进行带电维护工作时，在分流绝缘子钟罩之前用作验证绝缘子串完整性的维护工具
在通电绝缘体上使用时不会促进闪络，因为它既可用作绝缘体又可用作绝缘体测试仪
特征
用于连接到热棒的通用样条
内置电源在绝缘体上施加限流 10kVDC 电位
蜂鸣器提供绝缘体损坏的声音警告
LED刻度显示被测绝缘子的状态，最大漏电流50微安放大
由锂离子电池供电，可持续数天测试（视使用情况而定）
120/240VAC 通宵充电
-25°F (-32°C) 至 125°F (52°C) 的工作范围
轻巧 – 仅重 3 磅（1.36 公斤）
工作频率 50/60Hz
该产品可以手持，以便在将绝缘子安装到线路上之前，在仓库、回收区和现场对断电绝缘子进行方便的测试。该测试仪配备通用花键，可与热棒一起使用，方便使用在带电线路工作之前立即对绝缘子进行带电测试。它能够在所有电压水平下测试串中的绝缘子。
手术
IT-4 绝缘子测试仪是一个独立的单元。有两个探头连接到仪器上。它们可以根据个人喜好在三个不同的位置进行调整。一旦探头就位，就可以进行断电测试了瓷器、玻璃、悬架或帽和销绝缘子。只需通过通用花键固定装置并按下红色电源按钮。要测试绝缘体，请将一个探针放在绝缘体的帽上，另一个放在引脚上。如果 LED 显示屏亮起超过第二个黄色 LED 和/或蜂鸣器响起，则绝缘体是导电的，应测试表面污染.
测试表面污染同样容易。将探针放在绝缘体的裙边上将确定表面是否导电。如果发现表面导电，应清洁绝缘体并重新测试。
使用IT-4也可以在多件式绝缘子保持使用状态下进行测试。将热棒连接到仪器前面的通用花键上，按照相同的测试程序，可以在现场识别有缺陷的绝缘子通电时，不会中断服务。
IT-4 可以帮助公用事业公司提高系统可靠性、减少客户投诉并通过回收优质绝缘体来延长材料预算。
