Schaffner Group
User and Installation Manual
Ecosine evo
October 2018
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3.9 Filter performance
Ecosine evo passive harmonic filters achieve 5% THID with 6-pulse diode rectifiers under the following
condition.
Filter is applied to rated voltage and power
THVD <2%, line voltage unbalance <1%
RC damper module is required to be included in the filter if there is EMI filter present in the drive. Typical
expected EMI filter capacitance (phase to star point) are shown in
Table
18
and
Table
19
.
Table 18 Typical expected EMI filter capacitance (phase to star point) for series FN 3440/FN 3441 and FN
3450/FN 3451
1.1 kW
1.5 µF
2.2 kW
2.2 µF
4-11kW
3.3 µF
15 to 45 kW
4.7 µF
55 to 200(250) kW 10 µF
Table 19 Typical expected EMI filter capacitance (phase to star point) for FN 3442/FN 3443 and FN 3452/FN
3453
1.5 HP
1.5 µF
3 HP
2.2 µF
5-20HP
3.3 µF
25 to 60 HP
4.7 µF
75 to 300 HP
10 µF
|
Note: 132…200 kW of FN 3440/FN 3441 series, 160…250 kW of FN 3450/FN 3451 series
200…240HP of FN 3442/FN 3443 series, and 250…300HP of FN 3452/FN 3453 series do not need
RC damper module when the equivalent phase to star point capacitance of the EMI filter is not bigger
than 10 µF.
|
5% THID is not guaranteed for thyristor rectifier application. The performance of the filter is
dependent on the firing angle of the thyristors.
|
Ecosine evo filter performance (THID, power factor and U
dc
) under different load conditions with are
shown in the following charts.
