公开(公告)号：WO1995018385A1

公开(公告)日：1995-07-06

申请号：PCT/US1994014904

申请日：1994-12-23

Applicant: THE UNIVERSITY OF CONNECTICUT

Inventor： THE UNIVERSITY OF CONNECTICUT ,  MASHIKIAN, Matthew, S. ,  NORTHROP, Robert, B. ,  SUI, Dong

IPC: G01R31/08

CPC classification number: G01R31/024

Abstract: Test apparatus for a high voltage cable installation includes a high AC voltage source (10) having the frequency range intended to be carried by the cable installation and a high DC voltage source (16). A switch (18) alternately passes positive and negative polarities of the DC voltage, and the AC voltage source and the alternating polarity DC voltage output from the switch are coupled while isolating the voltage sources from each other. The resulting alternating polarity DC-biased AC voltage (26) is injected into the cable installation to produce indications of incipient faults.

Abstract translation: 用于高压电缆安装的测试装置包括具有意图由电缆装置承载的频率范围的高交流电压源（10）和高直流电压源（16）。 开关（18）交替地通过直流电压的正极性和负极性，并且将交流电压源和从开关输出的交流极性直流电压耦合，同时将电压源彼此隔离。 所产生的交流极性DC偏置AC电压（26）被注入到电缆装置中以产生初始故障的指示。

公开(公告)号：EP0737318A1

公开(公告)日：1996-10-16

申请号：EP95906714.0

申请日：1994-12-23

Applicant: THE UNIVERSITY OF CONNECTICUT

Inventor： MASHIKIAN, Matthew, S. ,  NORTHROP, Robert, B. ,  SUI, Dong

IPC: G01R31

CPC classification number: G01R31/024

Abstract: Test apparatus for a high voltage cable installation includes a high AC voltage source (10) having the frequency range intended to be carried by the cable installation and a high DC voltage source (16). A switch (18) alternately passes positive and negative polarities of the DC voltage, and the AC voltage source and the alternating polarity DC voltage output from the switch are coupled while isolating the voltage sources from each other. The resulting alternating polarity DC-biased AC voltage (26) is injected into the cable installation to produce indications of incipient faults.