gefran BUy-1020 Manuel D'utilisation page 53

This formula calculates an average power value which could be different
C !
aution
from the instant power in case of very low duty cycles.
The resistors can not usually bear a power peak which is 5 to 10 times higher
than their rated value. As a consequence, if the duty cycles are lower than
10%, this value can not be used as a resistor rated power. See also the
calculations in chapters 4.1 and 6.
Consult the resistor producer for further details about the overload capacity.
Being n2 = 0 (stop), the formula states that:
Braking unit features:
The peak current allowed by the BUy must be higher or equal to the real one. The average
current is stated through:
53-GB
1
E =
BR
2
I
PBU
E
PBR
I =
AVBR
t * V
BR BR
—————— Braking Unit ——————
P * t
PBR BR
³
I
BR
³
I I
AVBU AVBR