Technical Data
BA8230 21
2.4.1.2 Mains chokes Mains choke is required in the supply cable to reduce the harmonics and
(3-phase chokes) limit commutation failures. The mains chokes for the relevant 8230 frequency inverter
types are listed in the table below.
Mains chokes are not included in the 8230 frequency inverter.
The mains choke must be allocated individually to each 8230 frequency inverter to
guarantee decoupling when several units are operated at the same mains supply
point. A mains choke of high rating is not suitable for several low power 8230
frequency inverter units.
Mains chokes improve the overvoltage protection. The impedance of the choke forms
a voltage divider with the impedance on the mains side. When the choke is not
saturated magnetically it limits the current rise when the voltage rises. This prevents
excessive overvoltages at the 8230 frequency inverter mains input.
frequency inverter Mains choke Mains choke
type with medium overload with high overload
8231 ELN3-0011H270 ELN3-0014H200
8232 ELN3-0011H270 ELN3-0011H270
8233 ELN3-0009H370 ELN3-0009H300
8234 ELN3-0006H450 ELN3-0009H370
Table 9: Mains chokes
Characteristics
Relative short circuit voltage u
K
= 3.8 %
(400 V supply voltage, rated output current)
Operating voltage 380 V ... 460 V +10/-15 %, 50/60 Hz ±5 %
Protection class IP 00
Mode DB
Environment class DIN EN 60721 Part 3-3 3K3 / 3M2 / 3C2 / 2K2
See section 2.8.2 for dimensions, weights and installation instructions
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