... 6. 10, 12, 20, 40, 60, 8, 100A 3) Constant: 2,400, 1,400, 1,200, 720, 360, 240, 180, 120r ... /kW/h 4) Rotor speed at ib: 13.2 r/min 5) Rotor torque at ib: 4.5 x ... 4W/VA 7) Overload capacity: 400% ib 8) Accuracy: class 2.0 9) Service life: 10 years 10) Rated voltage (Un ... voltage 50Hz, 1 min: a) Between line and earth: 2.5kV b) Between line: 600V 17) Impulse voltage 1.2/50us: > 6kV 18) Rotor mass ...