Electrical installation35 04/2019 - V01 DS 400.2Ballast – dimensioning 4.12 Ballast – dimensioningExternal ballast resistanceDimensioningMaximum value of the braking powerP max [W] = Jg x n x n91 x tBBallast resistance powerP Ballast [W] = ___Pmax___K1 x K2JgnntB====Motor torque and reduced loadmax. SpeedSpeed differenceBraking timekgm²][min -1][min -1][s]Warning:The ballast resistor may be up to 200 ° C hot. Resistance shockproof mount. Do not placeany heat-sensitive parts directly to the resistance or heat air flow. Note enclosuretemperature rise, resistance mounted outside as possible.Braking timeCooling time