FIELD: electric measurement technology. SUBSTANCE: method involves superposition of AC voltage with periodically varying frequency onto line under test, correction of capacitive component of current by inductive current, and determination of lower extremum of maximum potential envelope. EFFECT: improved measurement accuracy during in-service tests of line parameters. 2 dwg
Title | Year | Author | Number |
---|---|---|---|
OVERVOLTAGE PROTECTION DEVICE FOR DC SYSTEMS | 1991 |
|
RU2022437C1 |
METHOD FOR MEASURING RESISTANCE OF CONNECTIONS ISOLATION IN BRANCHED NETWORKS OF DIRECT AND ALTERNATING CURRENT, AND DEVICE FOR ITS REALIZATION | 2004 |
|
RU2275645C2 |
METHOD OF MEASURING INSULANCE IN MULTI-PATH DC CIRCUITS | 2008 |
|
RU2363960C1 |
METHOD TO CONTROL RESISTANCE OF INSULATION OF RAMIFIED DC CIRCUITS AND DEVICE FOR ITS REALISATION | 2008 |
|
RU2411526C2 |
METHOD TO MONITOR RESISTANCE OF INSULATION OF BRANCHED DC NETWORKS AND DEVICE FOR ITS REALISATION | 2011 |
|
RU2480776C1 |
METHOD OF DETERMINING PHASE VOLTAGE, SURFACE RESISTANCE AND LEAK CURRENT FOR LINEAR SUSPENDED INSULATOR OF OVERHEAD TRANSMISSION LINE AND DEVICE THEREFOR | 2014 |
|
RU2578726C1 |
METHOD AND DEVICE FOR CONTROL OF ISOLATION OF ELECTRICAL SUPPLY SYSTEM WITH ISOLATED NEUTRAL | 2017 |
|
RU2644626C1 |
NEUTRAL GROUNDING METHOD | 2019 |
|
RU2726344C1 |
DEVICE FOR MEASURING INSULATION RESISTANCE IN NETWORKS WITH COMPLETELY GROUNDED NEUTRAL | 0 |
|
SU890269A1 |
METHOD OF PROTECTION OF AC MAIN AGAINST PARTIAL GROUND | 0 |
|
SU1480002A2 |
Authors
Dates
1995-02-09—Published
1991-06-13—Filed