Ac Connection; Ac Supply 400V / 3-Phase; Figure 13: Connection Of The Mains Supply - KEB COMBIVERT S6 Instructions For Use Manual

cONNecTION Of THe POWer UNIT

4.2.3 Ac connection

4.2.3.1 AC supply 400V / 3-phase

L1
L2
L3
PE
No. Type
Mains voltage
①
Mains form
Personal protection
②
Mains fuses
③
Mains contactor
④
Mains choke
⑤
HF filter
⑥
KEB COMBIVERT
Figure 13: Connection of the mains supply
The service life of drive converters with voltage DC link depends on the DC voltage, sur-
rounding 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 capacitors to a considerable extent,
especially when connecting to „hard" power systems or when under permanent drive load
(continuous duty). The term "hard" power system means that the nodal point power (S
of the mains is very high (>> 200) compared to the rated apparent output power of the drive
converter (S
S
net
k = –––– >> 200
S
out
44
PE
The rated voltage between one phase conductor and earth potential (or arti-
ficial neutral point in the IT mains) must not exceed 300V (effective value).
RCMA with separator or RCD type B
=> "Cable-fed disturbances depending on the motor line length at AC supply"
Optional to observance the limit values according
).
out
2 MVA (supply transformer)
e.g. k = –––––––––––––––––––––
4 kVA (10S6)
L1
L2
L3
PE
Description
3-phase 400 V AC
TN, TT
Type gG or MCCB
out internal filter
S6
= 500
U
V
W
IT
Earth leakage monitor
EN 61800-3 for units with-
––> Choke required
)
net