Methods and devices for selective insulation monitoring in ungrounded Isolé Terre (IT) power supply systems
US-11456589-B2 · Sep 27, 2022 · US
responsive to ratio of voltage and current
responsive to ratio of voltage and current · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02H3/40 |
| Official title | responsive to ratio of voltage and current |
| Display label | responsive to ratio of voltage and current |
| Total patents | 108 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 6 |
| 2017 | 6 |
| 2018 | 7 |
| 2019 | 10 |
| 2020 | 11 |
| 2021 | 14 |
| 2022 | 17 |
| 2023 | 12 |
| 2024 | 9 |
| 2025 | 14 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods for impedance-based broken conductor detection in electric distribution systems
US-2022299557-A1 · Sep 22, 2022 · US
Method and device for timing in time-varying distance protection based on multiple lines in tower
US-2022239093-A1 · Jul 28, 2022 · US
Photovoltaic power generation system and method
US-2022216690-A1 · Jul 7, 2022 · US
Distance protection using supervised sequence currents and voltages for electric power delivery systems
US-11271389-B2 · Mar 8, 2022 · US
Distance protection using supervised sequence currents and voltages for electric power delivery systems
US-2021408782-A1 · Dec 30, 2021 · US
Power Control System and Controller for Power Control System
US-2021391808-A1 · Dec 16, 2021 · US
Method for controlling a charging device of a vehicle and charging device of a vehicle for charging an electrical energy storage device of the vehicle
US-11190003-B2 · Nov 30, 2021 · US
Method and protection device for generating an error signal indicating an error type of an error in a multi-phase electrical energy supply network
US-11175329-B2 · Nov 16, 2021 · US
Transmission and distribution system with electric shock protection function and method of operating the same
US-2021351690-A1 · Nov 11, 2021 · US
Direct current distance protection controllers
US-11081879-B2 · Aug 3, 2021 · US
Power device protection
US-2021210951-A1 · Jul 8, 2021 · US
Method and system for locating a fault in a mixed power transmission line
US-11047892-B2 · Jun 29, 2021 · US
Circuit breaker failure protection relay and protection relay system
US-11050237-B2 · Jun 29, 2021 · US
Method and control system for fault direction detection
US-11016136-B2 · May 25, 2021 · US
Protection apparatus
US-10998715-B2 · May 4, 2021 · US
Method and device for generating a classification signal classifying an electrical impedance
US-2021123984-A1 · Apr 29, 2021 · US
Method and apparatus for suppressing impact of compensator on line distance protection
US-10965114-B2 · Mar 30, 2021 · US
Protection relay
US-2021006059-A1 · Jan 7, 2021 · US
Fault location system using voltage or current measurement from diverse locations on a distribution network
US-2020309841-A1 · Oct 1, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02H3/40?
- CPC H02H3/40 is the Cooperative Patent Classification code for “responsive to ratio of voltage and current.”
- How many patents are filed under CPC H02H3/40 (responsive to ratio of voltage and current)?
- Our database includes 108 publications tagged with this CPC code.
- Is patent activity under CPC H02H3/40 growing?
- Publication counts under this code: 9 in 2024 vs 14 in 2025 (latest complete years).