Earth leakage detection device and vehicle power supply system
US-2022404432-A1 · Dec 22, 2022 · US
by means of an auxiliary voltage injected into the installation to be protected {(using summation current transformers H02H3/33)}
by means of an auxiliary voltage injected into the installation to be protected {(using summation current transformers H02H3/33)} · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02H3/17 |
| Official title | by means of an auxiliary voltage injected into the installation to be protected {(using summation current transformers H02H3/33)} |
| Display label | by means of an auxiliary voltage injected into the installation to be protected {(using summation current transformers H02H3/33)} |
| Total patents | 94 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 3 |
| 2017 | 12 |
| 2018 | 10 |
| 2019 | 9 |
| 2020 | 5 |
| 2021 | 11 |
| 2022 | 16 |
| 2023 | 10 |
| 2024 | 10 |
| 2025 | 1 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ground fault circuit interrupter with integrated controller
US-2022337049-A1 · Oct 20, 2022 · US
Functional safety mechanism for detection of a fault in a leadframe
US-2022329060-A1 · Oct 13, 2022 · US
Ground fault detection methods on variable frequency drive systems
US-11329589-B2 · May 10, 2022 · US
Compensation device for compensating for leakage currents
US-11320494-B2 · May 3, 2022 · US
Intelligent leakage current detection and interruption device for power cord
US-11258245-B2 · Feb 22, 2022 · US
Electric circuit arrangement and method for coupling an insulation monitoring device to an ungrounded power supply system
US-11175330-B2 · Nov 16, 2021 · US
Systems and methods for ground fault detection
US-2021341547-A1 · Nov 4, 2021 · US
Combined monitoring device for insulation-resistance monitoring and protective-conductor-resistance monitoring of a power supply system
US-11156653-B2 · Oct 26, 2021 · US
Fault clearing circuitry
US-2021175703-A1 · Jun 10, 2021 · US
Combined monitoring device for insulation-resistance monitoring and protective-conductor-resistance monitoring of a power supply system
US-2021096167-A1 · Apr 1, 2021 · US
Arrangement for injection-based ground fault protection handling
US-10962604-B2 · Mar 30, 2021 · US
Electrical link comprising an electrical protection device—voltage bias
US-10951019-B2 · Mar 16, 2021 · US
Electrical link comprising an electrical protection device—current bias
US-10938201-B2 · Mar 2, 2021 · US
Compensation device for compensating for leakage currents
US-2021048484-A1 · Feb 18, 2021 · US
Electrical link comprising an electrical protection system
US-10903645-B2 · Jan 26, 2021 · US
Intelligent leakage current detection and interruption device for power cord
US-2021006060-A1 · Jan 7, 2021 · US
Method and detection device for detecting a high-impedance ground fault in an electrical energy supply network with a grounded neutral point
US-10768243-B2 · Sep 8, 2020 · US
Systems and methods for testing electrical connectors
US-10704827-B2 · Jul 7, 2020 · US
Electric circuit arrangement and method for coupling an insulation monitoring device to an ungrounded power supply system
US-2020116778-A1 · Apr 16, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02H3/17?
- CPC H02H3/17 is the Cooperative Patent Classification code for “by means of an auxiliary voltage injected into the installation to be protected {(using summation current transformers H02H3/33)}.”
- How many patents are filed under CPC H02H3/17 (by means of an auxiliary voltage injected into the installation to be protected {(using summation current transformers H02H3/33)})?
- Our database includes 94 publications tagged with this CPC code.
- Is patent activity under CPC H02H3/17 growing?
- Publication counts under this code: 10 in 2024 vs 1 in 2025 (latest complete years).