{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9727054","patent":{"patent_number":"US-9727054","title":"Impedance measurement behind subsea transformer","assignee":null,"inventors":[],"filing_date":"2015-02-25T00:00:00.000Z","publication_date":"2017-08-08T00:00:00.000Z","cpc_codes":["G05B"],"num_claims":18,"abstract":"To enable any measurement through the galvanic isolation of a subsea transformer, a topside system is used apply an AC voltage thereby generating a flux is the transformer core. The test is preferably done prior to any rotation in a subsea motor installed “behind” the transformer. Therefore, the voltage and frequency combination is be selected such that the torque produced is insufficient to rotate the motor. Impedance amplitude and phase are measured and then comparing the results of modeled fault scenarios. Faults such as, open circuits, short circuits, and loss of phase(s) can be detected prior to startup."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Impedance measurement behind subsea transformer","description":"To enable any measurement through the galvanic isolation of a subsea transformer, a topside system is used apply an AC voltage thereby generating a flux is the transformer core. The test is preferably","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9727054","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9727054","citation_suggestion":"Patentable. \"Impedance measurement behind subsea transformer\" (US-9727054). https://patentable.app/patents/US-9727054","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9727054","json":"https://patentable.app/api/llm-context/US-9727054","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:09:12.835Z"}