Schaffner Group
User and Installation Manual
Ecosine evo
October 2018
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ii. Performance Guarantee
Selecting and installing the appropriate ecosine evo passive harmonic filter in a variable frequency AC drive
application,variable speed drive application within our published technical specifications we guarantee that
the input current distortion will be less than or equal to 5% THID for standard ecosine evo series filters at
rated power. Ecosine evo filters can also provide similar performance in other drive applications such as
constant torque, DC drives or other phase controlled rectifiers, e.g. SCR drives, but actual THID levels can
vary by load and/or speed and/or firing angle of thyristors and therefore cannot be guaranteed. Consult your
local Schaffner representative for assistance when applying ecosine filters on these types of equipment.
Minimum system Requirements
The guaranteed performance levels of this filter will be achieved when the following system conditions are
met:
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Type of load: Any 3-phase equipment with front-end six-pulse diode rectifier, with
(FN 3441/43/51/53) or without DC-link choke (FN 3440/42/50/52).
|
Type of source: 3-phase power line without neutral
|
Line impedance: <3% (calculated for the rated filter power)
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Line frequency: 50 Hz ±1 Hz (FN 3440/41, FN 3450/51), 60 Hz ±1 Hz (FN 3442/43, FN 3452/53)
|
Line voltage: Nominal line voltage ±10%
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Line voltage unbalance: <1%
|
Line voltage distortion: THVD <2%
If a properly sized and installed filter fails to meet the 5% THID level, Schaffner will provide thenecessary
application engineering support or filter replacement at no charge.
iii. Important user notice
Schaffner ecosine evo harmonic filters are designed for the operation on the input (grid) side of power
electronic equipment with six-pulse rectifier front-ends in balanced three-phase power systems, like typically
used in AC or DC motor drives and high power DC supplies. Filter suitability for a given application must be
determined by the user on a case by case basis. Schaffner will not assume liability for any consequential
downtimes or damages resulting from use or application of ecosine filters outside of their specifications.
Ecosine filters are not designed for single-phase or split-phase applications.