6.3 Mains connection
ATTENTION
Exchanging mains and motor connection leads to immediate destruc-
tion of the unit.
6.3.1 Note about hard mains
The service life of drive converters with DC link depends on the DC voltage level, the
ambient temperature and the current load of the electrolytic capacitors in the DC link.
Theuseofmainschokescansignicantlyincreasetheservicelifeofthecapacitors,
especially under permanent drive load (continuous duty) or when connecting to „hard“
power systems.
The term "hard" power system means that the nodal point power (S
net) of the mains is
very high (>> 200) compared to the output rated power of the
drive converter
(Sout).
k =
Snet
>> 200
––––
S
out
6.3.2 Recommended type of mains cable
PE
PE
PE
L2L1
L3
Symmetrical shielded cables are recommended for
high motor power.
• Type of cable: 2XSLCYK-J.
• The protective earth conductor is tripartited and
uniformly placed between the phase lines.
• Compliance with the requirements according to
EN 12502-1...5.
Figure 19: Cross-section type of mains cable
67
ELECTRICAL INSTALLATION
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