The Generator Owner shall provide tap settings, available fixed tap ranges, and impedance data of generator step-up and auxiliary transformers to its associated Transmission Operator and Transmission Planner within how many calendar days of a request?

• A. 30 calendar days
• B. 30 days
• C. 60 calendar days
• D. 90 days

Answer: (A)

The key idea is that essential data about generator-tied transformers must be provided to the neighboring operator and planner within a strict, uniform time frame so operations and planning can rely on accurate models. The required window is 30 calendar days from the request. Using calendar days means every day counts, including weekends and holidays, which removes ambiguity and helps ensure timely access to critical information. Tap settings, available fixed tap ranges, and impedance data are fundamental for voltage control, network modeling, and protection coordination, so having them promptly allows the Transmission Operator and Transmission Planner to perform reliable steady-state analyses, assess the impact of generation changes, and coordinate operating decisions. Longer deadlines would slow down this coordination, while a shorter or non-specified timeframe would undermine reliability.