I see the same from the 13.5TH/s s9 using HP HSTNS-PR16 2450 Watt PSU and room temp is 64F
Measured voltage 242v
My S9's at 13.5 TH/s consume on average 1417W with an APW3++ PSU on 230V. The room temp has been 35F-40F during the period I watched consumption.