58
CONNECTION OF THE POWER UNIT
4.2.4.2 AC supply 230 V 1-phase
L1
N
PE
L1
N
U
V
W
TA1 TA2
PE
PE
No. Type Description
1
Mains voltage 1-phase 230 V AC
Mains form
TN, TT IT
The rated voltage between one phase conductor and earth potential (or arti-
cialneutralpointintheITmains)mustnotexceed300V(eectivevalue).
Personal protection RCMA with separator or RCD type B Earth leakage monitor
2 Mains fuses Type gG
3 Mains contactor
4 Mains choke
=> „4.2.6.2 Cable-fed disturbances depending on the motor cable length at
AC supply“
5 HFlter
Optional to observance the limit values according EN 61800-3 for devices
withoutinternallter
6 KEB COMBIVERT S6
Figure 17: Connection of the mains supply 1-phase devices
The service life of drive controllers with voltage DC link depends on the DC voltage,
surrounding temperature and the current load of the electrolytic capacitors in the DC
link. The use of mains chokes can increase the service life of the condensators to a
considerable extent, especially when connecting to „hard“ power systems or under
permanent drive load (continuous duty). The term "hard" power system means that
the nodal point power (S
net) of the mains is very high (>> 200) compared to the rated
apparent output power of the drive controller (Sout).
k =
S
net
>> 200 e.g. k =
2 MVA (supply transformer)
= 714 ––> Choke required–––– –––––––––––––––––––––
S
out 2.8 kVA (09S6)
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