HVA28和HVA28TD是真正紧凑和便携式VLF测试集,确定中压电缆的条件。与HVA28设备相比,HVA28TD设备集成了Tan Delta诊断功能,可以扩展TD诊断单元。它们都进行VLF和直流测试,以及使用护套故障定位模式进行护套测试。性能:在尺寸、重量(14公斤)和性能(最大。10μF)。占空比:工作时间不受热限制;它们可以连续运转。安全:试验装置有两个独立的接地装置(电子和机械放电)和一个集成的12kv瞬态保护系统(50hz),以保护操作人员和设备。现场使用:防水且坚固的外壳,防护等级为IP67(带封闭盖子),不需要额外的运输解决方案。连通性:现场不需要外部PC。 All results can be later downloaded via USB or Bluetooth for further investigation and easy reporting via software tool. Service and maintenance: With no oil or arcing contacts the dry-type transformer makes these gadgets almost maintenance-free. MWT: In addition, HVA28TD offers a Monitored Withstand Test, a combination of withstand testing and Tan Delta diagnostics in compliance with the guide IEEE 400.2-2013. Output voltage - 29 kV, 21 kVrms Output load - 0.5 μF @ 0.1 Hz @ 20 kVrms Weight - 14 kg / 31 lbs