Train delays along NSL and CCL on Sunday morning due to power faults

Train service was disrupted on Sunday morning (26 May), twice along the North South Line (NSL), and once along the Circle Line (CCL).
According to the transport operator, SMRT, the disruptions were caused by power faults.
The first train delay occurred for about an hour from 6:39am to 7:23am along the NSL due to a power failure:
https://twitter.com/SMRT_Singapore/status/1132416019522248704
https://twitter.com/SMRT_Singapore/status/1132417922675093505
https://twitter.com/SMRT_Singapore/status/1132418656565047296
https://twitter.com/SMRT_Singapore/status/1132426979804819456
Then the Circle Line experienced delay for about half an hour from 7:50am to 8:22am, also caused by power failure:
https://twitter.com/SMRT_Singapore/status/1132433880290435072
https://twitter.com/SMRT_Singapore/status/1132437656585924608
https://twitter.com/SMRT_Singapore/status/1132441896964374529
Four minutes later SMRT posted another tweet informing there was no train services along the NSL, again caused by a power fault:
https://twitter.com/SMRT_Singapore/status/1132442754401751040
https://twitter.com/SMRT_Singapore/status/1132444258542030850
Finally, at 8:57am, SMRT informed that the train fault along the NSL was cleared; but free buses were still available:
https://twitter.com/SMRT_Singapore/status/1132450681657257984
Because these incidents happened on Sunday there were not many posts from passengers on social media platforms, but some unfortunate commuters have to go to work and they commented on Twitter:
https://twitter.com/sweetbliss_jy/status/1132416417033142272
https://twitter.com/kwihyoni_/status/1132431015006298112
Other passengers also commented on Twitter:
https://twitter.com/Tx_2171F/status/1132429205986131968
(Translation: According to the SMRT, there is a delay of about 30 minutes between the Metro North-North Line Newton and Marina South Pier Station due to power system failure.)
https://twitter.com/QiBambiMin/status/1132437393443655680
https://twitter.com/QiBambiMin/status/1132444978443984896
https://twitter.com/richardjang/status/1132445215099277314
Other commuters tweeted complains:
https://twitter.com/s0resouls/status/1132445522831134720
https://twitter.com/changjiahong/status/1132447094969470976
https://twitter.com/DzulfiqarHaron/status/1132452612178006018







