Insulation monitoring device
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United States of America Patent
Stats
-
Jan 2, 2018
Issued Date -
N/A
app pub date -
Jul 6, 2015
filing date -
Jun 26, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An insulation monitoring device that carries out insulation monitoring of a power system or load apparatus using, for example, an Igr method includes a table in which a monitoring setting value Irref greater than a resistance component error current flowing in accordance with the sum of the electrical capacitance of a capacitor configuring a noise filter on the input side of the load apparatus and the ground insulation capacitance of the power system is set in advance in accordance with an operating schedule of the load apparatus, a monitoring setting value computing unit that outputs the monitoring setting value Irref read from the table in accordance with a current time according to a clock, and an insulation evaluation unit that detects an insulation failure caused by a decrease in ground insulation resistance when a resistance component current extracted by an Igr extraction unit exceeds the monitoring setting value Irref.
First Claim
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Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- G01R Class
- 23.34 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jul 2, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 2, 2029 |
