Definitions Of The Power Ratings - Siemens SIMOVERT MASTERDRIVES 6SE70 C.87-2DA0 Series Operating Instructions Manual

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
4-2
90
Fig. 4-1 Load characteristics of the braking units
Unità di frenatura / Braking Unit
Braking unit with internal resistor
P20 = Rated Power
= Peak Power = 1.5 × P20
P3
PDB = 0.03 × P20 = Steady State Power Rating
P
P3 1.5
P20 1
PDB 0.03
0
t[s]
0
1.7 2.5
6SE7087-2CX87-2DA0
03.2004
72.5
Siemens AG
SIMOVERT MASTERDRIVES
t[s]