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ECOsine
ECOsine – getting a grip on harmonics
Cost and energy savings.
Schaffner ECOsine filters reduce harmonics and ensure
that a clean sinusoidal current is drawn from the grid. Both true RMS and peak
current are reduced in the process, thus lowering the burden on the electric
installation.
Transformers, conductors, fuses, breakers etc. experience less electric and ther-
mal stress, and can therefore be downsized already in the planning phase. In an
existing installation, the capacity of the distribution transformer can be utilized
more efficiently, and more electric consumers (e.g. motor drives) can be operated
without investments in electric system upgrades.
Current
Voltage (phase-neutral)
Current
Without Schaffner ECOsine
With Schaffner ECOsine
Current:
I
in = 11Arms (for power = 5.5kW)
I
in = 7.5Arms (for power = 5.5kW)
THID = 92 % (for R
sce = 150)
THID = 4.0 %
PWHD = 37 %
PWHD = 5.2 %
Individual harmonics: 5th – 74 %
Individual harmonics: 5th – 2.0 %
7th – 51 %
7th – 2.2 %
11th – 13 %
11th – 2.0 %
13th – 5 %
13th – 1.4 %
Voltage:
U
in = 480Vrms (phase-phase)
U
in = 480Vrms (phase-phase)
THVD = 4.4 % (for I
sc/IL = 150)
THVD = 0.12 % (for I
sc/IL = 150)
Example with 5.5kW drive
linke Seite
Conductor size
With ECOsineTM
Without ECOsineTM
Amp rating of
breakers, fuses, etc.
No. of drives on
given transformer
65%
100%
65%
100%
150%
100%
linke Seite
Conductor size
With ECOsineTM
Without ECOsineTM
Amp rating of
breakers, fuses, etc.
No. of drives on
given transformer
65%
100%
65%
100%
150%
100%
linke Seite
Conductor size
With ECOsineTM
Without ECOsineTM
Amp rating of
breakers, fuses, etc.
No. of drives on
given transformer
65%
100%
65%
100%
150%
100%
ECOsine
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