Topic:"Regulatory Approval Processes" in M03232

During the past three years a minimal number of relays tested required replacement or repair due to functional failure (34, 2%). Should any of these relays have failed, backup relays would have responded to prevent customer outages. The to...

AI summary NSPI reports that only 2% of tested relays required replacement or repair over the past three years, suggesting a ten-year testing cycle may be more appropriate. They request UARB approval for this change, excluding Bulk Power System Elements which must be tested every four years.

Relay Testing Report 2009 (NSUARB P-401.32) NSPI Responses to UARB Information Requests

AI summary The 2009 Relay Testing Report (NSUARB P-401.32) details NSPI's responses to UARB information requests regarding relay testing procedures and grid reliability measures. The document focuses on technical compliance and operational protocols for power system protection.

NSPI's Relay Testing Report 2009 - P-401.32 - Matter 03232 With reference to NSPl's 2009 Relay Testing Report, please respond to the following Information Requests. - IR-1 Nova Scotia Power's 2006-2007 Relay Testing Report (letter dated Ju...

AI summary The document requests clarification on relay testing reports from 2006-2007 to 2009, including changes in relay counts, cost reductions over three years, and rationale for extending testing cycles to ten years. It also outlines filing requirements and contact details for responses.

NSPI's Relay Testing Report 2009 - P-401.32/ Matter No.: M03232 The Board has reviewed Nova Scotia Power Inc.'s ("NSPI") Relay Testing Report for 2009 received by the Board on June 3, 2010. Board staff requested additional information with...

AI summary The Board reviewed NSPI's 2009 relay testing report, noting a 2% failure rate and approving a 6-year testing cycle for 69 kV/138 kV systems instead of NSPI's requested 10-year cycle. NSPI argued that extended cycles were cost-effective due to low failure rates, but the Board emphasized continued monitoring.