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NERC RC Exam-times, percentages &values | Actual Questions and Answers
Latest Updated 202 5 /202 6 (Graded A+)
Common standard time period for station battery to handle outage of AC power to chargers - โโ 8 - 12 hours Time to restore data exchange redundancy when redundancy testing by RC/TOP/BA deemed unsuccessful - โโ2 hours Transition period to backup control facility (fully functioning) - โโ 2 hours Annual testing of backup control facility must prove to be functional for this long - โโ 2 hours Every 2 years TO/TOP/DSP must provide how many hours of system restoration training to field switching personnel - โโ2 hours Every 2 years GOP's with blackstart resources shall provide how many hours of training to operating personnel responsible for startup - โโ2 hours BAL- 002 default contingency reserve restoration period (following disturbance recovery period) - โโ 90 minutes How often should BA calculate and record inadvertent interchange - โโ 60 minutes/hourly How often should BA provide MW-hour meter readings to adjacent BA's - โโ 60 minutes/hourly TLR procedure (identifying TLR level and actions to be implemented) needs updating how often - โโ 60 minutes/hourly
Hourly ATC for next 48 hours calculated how often - โโ 60 minutes/hourly During EEA2/3 the energy deficient entity needs to update the RC how often until alert is terminated - โโ 60 minutes/hourly DOE- 417 (disturbance reporting) should be completed by when - โโ 60 minutes BA with loss of resources must submit RFI with start time no more than how far beyond the resource loss - โโ60 minutes Sink BA should ensure interchange modifications are submitted how soon after the modification - โโ 60 minutes If unable to calculate ACE for this long, BA must notify RC - โโ 30 minutes ACE cannot exceed BAAL for how long - โโ 30 minutes If AVR, PSS, or other voltage control device status changes from normal operation, GOP must notify TOP within how long of the change (if it does not last longer than this, no reporting necessary) - โโ 30 minutes GOP must notify TOP of change in reactive capability how quick - โโ 30 minutes TOP should return from unknown operating state how quick - โโ 30 minutes IROL Tv should be less than or equal to... (system should be returned to IROL within this time frame of exceeding) - โโ30 minutes RC completes RT assessments of SOL/IROL violations how often - โโ 30 minutes
Default ramp rate for for Eastern Interconnection interchange schedules - โโ 10 minutes Unscheduled flow transmission relief requested by the TOP should be approved by the RC how quickly - โโ 5 minutes Ramp for interchange schedules starts how soon before start of schedule - โโ 5 minutes Multiple contingencies within how many minutes of each other are reported as a single contingency - โโ 1 minute MW reportable threshold for sudden loss of gen - โโ2000mw Ace calculation occurs how often - โโ 6 seconds When EEA3 is terminated, the EDE should submit a report to the RC how soon after termination/downgrading - โโ2 business days How often is ATC for next 31 days calculated - โโ 24 hours/daily When a reportable threshold has been met, the responsible entity has how long to report - โโ 24 hours/next business day GOP with blackstart resource must notify TOP of any change to capabilities affecting ability to meet restoration plan within how long of the change - โโ24 hours RC/BA/TOP should test primary control center data exchange capabilities for redundant functionality at least how often - โโ90 calendar days
TOP should update and submit the restoration plan to the RC within how long after identifying unplanned permanent system modifications - โโ90 calendar days Changes to Operating plan with regards to backup facility should be updated/approved within how many days of the change - โโ60 calendar days TOP must provide copy of voltage schedule to RC or neighboring TOP's within how long of a request - โโ 30 calendar days TOP must provide criteria used to develop voltage schedule or reactive power schedule to an inquiring GOP within how long of the request - โโ30 calendar days GO should provide tap settings/ranges and impedance data to TOP & transmission planner within how long of a request - โโ30 calendar days When BA/TOP submits Emergency Operating plan to RC, the RC has how long to review and notify of results - โโ30 calendar days RC has how long to approve/dissapprove TOP restoration plan - โโ 30 calendar days GOP should provide blackstart test results to RC/TOP within how long of request - โโ 30 calendar days RC should distribute revised restoration plans to each TOP & neighboring RC within how many days of revision/creation - โโ30 calendar days Conflicts between neighboring RC restoration plans should be resolved how quickly - โโ 30 calendar days LSE, Transmission/Resource planners must share available amount of interruptible load & DCLM to TOP/BA/RC within how many days - โโ30 calendar days
System restoration plans/procedures for simulation should be tested and verified how often - โโAt least every 3 years How often are blackstart resources required to be tested - โโAt least every 3 years TOP should verify through analysis of actual events, steady state, and dynamic simulations/testing that the restoration plan accomplishes intended function how often - โโAt least every 5 years Zone 3 relays look at what percent of a line - โโ150% Zone 2 relays look at what percent of a line - โโ120% Zone 1 relays look at what percent of a line - โโ90% CPS- 1 compliance factor requirement - โโat least 100% DCS states that the BA should return ACE to 0 within the recovery period for what percent of reportable disturbances - โโ100% BA's frequency & ACE metering equipment should be available with a minimum accuracy of 0.001Hz for what percent of the year - โโ99.5% According to DCS, a contingency is considered a reportable disturbance if it is what percent of the MSSC
- โโ80% Voltage deviation of what percent nominal voltage for extended period of time is reportable - โโ10% To restore 1Hz frequency, how much load would need to be shed - โโ 6 - 10%
During restoration, BES should be operated no more than what percent above or below nominal voltage profile - โโ10% During restoration, loads should be added in blocks not to exceed what percent of synchronized generating capability - โโ5% Good rule of thumb - frequency will sag 0.5Hz for what percent increase in load - โโ5% System wide voltage reduction of what percent is reportable for TOP - โโ3% Firm load shedding of how many MW (regardless if manually shed or auto shed) is reportable by the initiating entity - โโ100mw What time should planned outage information be reported by the TOP to the affected TOP/BA/RC? - โโ 1200 UFLS & UVLS threshold - โโ300mw When an entity makes a change to the documented CIP Senior Manager, it must be updated within how long - โโ30 days How soon is the selected unaffiliated third-party reviewing the TO/TOP security plan required to complete the review - โโ90 days If third-party reviewing TO/TOP security plan recommends changes, how long does the TO/TOP have to modify plan or provide reasons for no modifications - โโ60 days Alternative interpersonal communication capability testing should be completed how often by TOP/BA/RC - โโ30 days/monthly
