I had a PQUBE3 installed at my home’s incoming supply for about six months now and this was the first voltage dip (or sag) that it captured.
Apparently there was a transmission level cable fault in the Utility’s network. This would mean everyone in Singapore would have ‘seen’ it one way or another (in varying degrees, depending on locations).
My home (western part of Singapore) is taking in 230V single-phase supply (on Phase L3).
The PQUBE3 recorded a voltage dip of 18.44%, for a duration of 60ms (Lowest voltage was 187.6V).
