Message from the National Grid Corporation of the Philippines (NGCP):
Auto-tripping incident: September 30, 2020, 9:59:13AM. Earlier upon isolation of 7BS01PLA/138 KV Bus no. 1, Power transformer no. 1 auto-tripped due to opening of 7Z-02CB24PLA via M2 stage 2 actuation as per MTD-B info.
For your information.
(Source: Surigao del Norte Electric Cooperative, Inc. Facebook page)