WASHINGTON, Feb 24 (Reuters) - It may take more than three years to reach the Federal Reserve’s inflation goals, Fed Chair Jerome Powell told lawmakers on Wednesday, a further signal the U.S. central bank plans to look beyond any post-pandemic spike in prices and leave interest rates unchanged for a long time to come. “We are just being honest about the challenge,” Powell told the House of Representatives Financial Services Committee when asked about Fed projections that inflation will remain at or below the central bank’s 2% target through 2023. The Fed has said it will not raise interest rates until inflation has exceeded 2% and “we believe we can do it, we believe we will do it. It may take more than three years.” (Reporting by Howard Schneider Editing by Paul Simao)