Continuous braking power

The minimum required continuous braking power (braking power at 100% cdf) of the braking resistor for load cycles can be calculated using the relative cyclic duration factor cdf and the overload factor k.

If the cyclic duration factor cdf is unknown, it can be calculated from the cycle duration t_tot and the braking time t_B using the following formula:

ED	Cyclic duration factor
tB	Braking time
ttot	Cycle duration

INFORMATION

The cycle duration must not exceed 120 s.

The overload factor k can be determined using the diagrams in chapter Overload factor k and the cyclic duration factor cdf.

The value of the average braking power P_B is taken from the project planning data of the application.

PB	Average braking power
Pi	Braking power section i
ti	Braking time section i
n	Number of braking sections

The minimum required braking power at 100% cdf is calculated using the following formula:

P100%cdf	Braking power at 100% cdf
PB	Average braking power
k	Overload factor

The braking power required by the application at 100% cdf must be smaller than or equal to the typical braking power at 100% cdf (continuous braking power) of the braking resistor.