Definitions Of The Power Ratings - Siemens SIMOVERT MASTERDRIVES Betriebsanleitung

Braking Resistors
4.1

Definitions of the power ratings

Braking unit with external resistor
P20 = Rated Power
= Peak Power = 1.5 × P20
P3
PDB = 0.25 × P20 = Steady State Power Rating
P
P3 1.5
P20 1
PDB 0.25
0
0 3 20 23
Fig. 4-1 Load characteristics of the braking units
4-2
The following applies with respect to
paralleled braking units:
P20 total
P3 total
PDB total
t[s]
90
= 0.9 x collective P20
of individual units
= collective P3 of
individual units
= collective PDB of
individual units
6SE7087-6CX87-2DA1
Braking Unit SIMOVERT MASTERDRIVES
10.2004
Siemens AG