Technical Data
32 BA8230
Application range of motor filters:
• With mains supply voltages U
N
≤ 460 V standard motors or motors with equivalent
insulation characteristics can be used on 8230 frequency inverter. Standard
motors of 400 V ... 460 V are designed for the voltage rates of rise and fall and
voltage peaks of up to 1300 V which occur during inverter operation. If other
makes of motors are used, please contact the motor supplier concerning suitability
for inverter operation. 8230 frequency inverter motor filters are to be used if the
insulation resistance of the motors and the maximum permitted voltage in the
motor terminal box does not match the required value of 1300 V and the permitted
voltage rate of rise in the winding insulation is <3 kV/µs.
If the motors do not satisfy these requirements, 8230 frequency inverter motor
filters or application-dependent output chokes are to be used.
• With long parallel runs of unscreened motor cables in industrial applications a
motor filter is recommended to reduce the effect of adjacent cable runs caused by
direct magnetic coupling.
• Radiated interference, particularly for high frequency components in the motor
current, is reduced by limiting the voltage rate of rise when using motor cables
which are not screened.
frequency inverter Motor filters Motor filters
type with medium overload with high overload
8231 ELM3-0040H260 ELM3-0050H220
8232 ELM3-0030H330 ELM3-0040H260
8233 ELM3-0025H400 ELM3-0030H330
8234 ELM3-0020H500 ELM3-0025H400
Table 16: motor filters
See section 2.8.8 and 2.8.9 for dimensions, weights and power losses.
Note:
See section 3.5 “Mains and motor connection” for further information and the
maximum permitted motor cable length when using filters.
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