ThdECOTM three-phase harmonic filters

ThdECOTM three-phase harmonic filters

Purpose and design

ThdECOTM type harmonic filters are devices designed to operate in the supply circuit of typical inverters with a six-pulse input rectifier. These filters enable limiting the harmonic content of the current drawn from the mains to less than 5% THDi, allowing compliance with IEEE 519-1992 and PN-EN 61000-3-12 standards. In facilities where harmonic filters are applied to large drives and non-linear loads, it is not necessary to oversize the mains transformer. Harmonic filters protect the power transformer windings from overload by current harmonics.

Upon agreement, we can manufacture a non- standard device with the required technical parameters.
The manufacturer reserves the right to make changes to the parameters due to technical product developments.

Technical Standards 61558-2-20 EN/IEC 60076-6, EN/IEC
Mains voltage 400V (according to the enquiry)
Voltage drop across filter dU ≤ 12%
Voltage harmonic content factor THDi
THDi < 5%
Frequency 50 Hz or 60 Hz
Overload capacity 110%In / 160%In / 60s
Voltage test 3kV / 50Hz / 60s
Insulation class F(1550C) or H(1800C)
Ambient temperature from -250C to +400C
Environment/climate class C1/E0 – land based, C2/E1 – mining and offshore

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