Siemens SIRIUS 3RF Series

SIRIUS 3RT2 contactors/contactor assemblies
2.4 Configuration
SIRIUS Innovations
142 System Manual, 01/2011, A8E56203870002-03
Table 2- 16 Calculation of the cable length
For AC voltage For DC voltage
,
LQP

]XO
 ຘ8ຘ  X

6
6/
5  ຘ3
HLQ

6/
,
LQP

]XO
 ຘ8  ຘ  X

6
6/
5ຘ3
HLQ

6/
U
S
Rated control voltage in V
R
SL
Ohmic resistance per conductor and km of the control cable in Ω/km
U
SL
Voltage drop on the control cable in %
S
ein
, P
ein
Switch-on power of the contactor in VA/W
cos ϕ
ein
Power factor of the contactor coil on switch-on
Note
A maximum cable voltage drop of u
SL
= 5% is permitted for SIRIUS contactors.