Transformer : Neutral and ground is grouped to earth.
Active voltage : 220 sin (90+30)
1.73 x 220 = 380 x 0.865 Vrms
Gas turbine: middle voltage transmission.
Heat measurement : infrared sensor.
Heat : circuit breakers. Deviation at 60 degrees celcius. Colour changing is indication ? Temperature limit 70 to 90 degrees celcius.
Active voltage : 220 sin (90+30)
1.73 x 220 = 380 x 0.865 Vrms
Gas turbine: middle voltage transmission.
Heat measurement : infrared sensor.
Fig.1. MV electrical panel
Fig.2. Distribution pole
Force : BIL sin (180 - x) at cross section. Conductor : dF/dl = BI sin x and Lenz Law indicates flux angle 0. Current density = integral surface E dS.
Fig.3. Power transformer
When damping, magnetic flux in transformer is changing. At its secondary side of its percentage increases. Actual force equals W.
Fig.4. Power disconnector
The disconnector such a surge protector can be installed at primary side of transformer to protect current increasing.
Those components are used in electrical networks. At power distribution, meter kwh will detect how much energy consumed. The supply and demand are in "watthour".